Merge branch 'develop' into amd-develop

example/01_gemm/CMakeLists.txt

@@ -22,6 +22,8 @@ add_example_dependencies(example_gemm_xdl example_gemm_xdl_fp16)
 add_example_executable(example_gemm_xdl_fp16_v2 gemm_xdl_fp16_v2.cpp)
 add_example_dependencies(example_gemm_xdl example_gemm_xdl_fp16_v2)
 
+add_example_executable(example_gemm_xdl_fp16_streamk_v3 gemm_xdl_fp16_streamk_v3.cpp)
+add_example_dependencies(example_gemm_xdl example_gemm_xdl_fp16_streamk_v3)
 add_example_executable(example_gemm_xdl_fp16_v3 gemm_xdl_fp16_v3.cpp)
 add_example_dependencies(example_gemm_xdl example_gemm_xdl_fp16_v3)
 add_example_executable(example_gemm_xdl_fp8_v3 gemm_xdl_fp8_v3.cpp)

example/01_gemm/README.md

@@ -7,3 +7,21 @@
 #arg3: run kernel # of times (>1)
 ./bin/example_gemm_xdl 0 1 5
 ```
+
+# Instructions for ```example_gemm_xdl_fp16_streamk_v3```
+
+## Run ```example_gemm_xdl_fp16_streamk_v3```
+```bash
+arg1: verification (0=no, 1=yes)
+arg2: initialization (0=no init, 1=integer value, 2=decimal value)
+arg3: time kernel (0=no, 1=yes)
+arg4 to 9: M (256x), N(128x), K(32x), StrideA, StrideB, StrideC
+arg10: stream-k select (-1: default config, 0: all DP, 1: 1-tile SK, 2: 2-tile SK)
+arg11: Grid_size(-1 for max occupancy)
+bin/example_gemm_xdl_fp16_streamk_v3 1 2 1 3840 4096 4096 4096 4096 4096 1 -1
+a_m_k: dim 2, lengths {3840, 4096}, strides {4096, 1}
+b_k_n: dim 2, lengths {4096, 4096}, strides {4096, 1}
+c_m_n: dim 2, lengths {3840, 4096}, strides {4096, 1}
+problem {M:3840, N:4096, K:4096, SA:4096, SB:4096, SC:4096, MP:4032, NP:4096, KRead:4096, KP:4096, AK0:512, BK0:2048, MBlock: 18, NBlock: 16, Stream-K Selection:1, Grid size:-1}
+Perf: 0.292022 ms, 441.23 TFlops, 330.348 GB/s, DeviceGemmXdlUniversal<MNPadding, RRR> BlkSize: 256, BlkTile: 224x256x64, WaveTile: 16x16, WaveMap: 7x8, VmemReadVec: 8x8, BlkGemmPipelineScheduler: Intrawave, BlkGemmPipelineVersion: v3, BlkGemmPipelinePrefetchStages: 2
+```

example/01_gemm/common.hpp

 // SPDX-License-Identifier: MIT
-// Copyright (c) 2018-2023, Advanced Micro Devices, Inc. All rights reserved.
+// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
 
 #pragma once
 
@@ -45,6 +45,19 @@ struct ProblemSizeStreamK final
 
     ck::index_t NumSKBlocks = -1;
 };
+struct ProblemSizeStreamK_universal final
+{
+    ck::index_t M = 3840;
+    ck::index_t N = 4096;
+    ck::index_t K = 4096;
+
+    ck::index_t StrideA = 4096;
+    ck::index_t StrideB = 4096;
+    ck::index_t StrideC = 4096;
+
+    ck::index_t Grid_size   = -1; // defaults to max occupancy
+    ck::index_t Streamk_sel = 1;  // defaults to 1-tile SK
+};
 
 struct ProblemSizeSplitK final
 {
@@ -123,6 +136,57 @@ bool parse_cmd_args<ProblemSize>(int argc,
     return true;
 }
 
+template <>
+bool parse_cmd_args<ProblemSizeStreamK_universal>(int argc,
+                                                  char* argv[],
+                                                  ProblemSizeStreamK_universal& problem_size,
+                                                  ExecutionConfig& config)
+{
+    if(argc == 1)
+    {
+        // use default case
+    }
+    else if(argc == 4)
+    {
+        config.do_verification = std::stoi(argv[1]);
+        config.init_method     = std::stoi(argv[2]);
+        config.time_kernel     = std::stoi(argv[3]);
+    }
+    else if(argc >= 10)
+    {
+        config.do_verification = std::stoi(argv[1]);
+        config.init_method     = std::stoi(argv[2]);
+        config.time_kernel     = std::stoi(argv[3]);
+
+        problem_size.M = std::stoi(argv[4]);
+        problem_size.N = std::stoi(argv[5]);
+        problem_size.K = std::stoi(argv[6]);
+
+        problem_size.StrideA = std::stoi(argv[7]);
+        problem_size.StrideB = std::stoi(argv[8]);
+        problem_size.StrideC = std::stoi(argv[9]);
+
+        if(argc >= 11)
+        {
+            problem_size.Streamk_sel = std::stoi(argv[10]);
+            problem_size.Grid_size   = std::stoi(argv[11]);
+        }
+    }
+    else
+    {
+        std::cerr
+            << "arg1: verification (0=no, 1=yes)" << std::endl
+            << "arg2: initialization (0=no init, 1=integer value, 2=decimal value)" << std::endl
+            << "arg3: time kernel (0=no, 1=yes)" << std::endl
+            << "arg4 to 9: M (256x), N(128x), K(32x), StrideA, StrideB, StrideC" << std::endl
+            << "arg10: stream-k select (-1: default config, 0: all DP, 1: 1-tile SK, 2: 2-tile SK)"
+            << "\narg11: Grid_size(-1 for max occupancy)" << std::endl;
+        return false;
+    }
+
+    return true;
+}
+
 template <>
 bool parse_cmd_args<ProblemSizeStreamK>(int argc,
                                         char* argv[],
@@ -165,7 +229,8 @@ bool parse_cmd_args<ProblemSizeStreamK>(int argc,
                   << std::endl
                   << "arg3: time kernel (0=no, 1=yes)" << std::endl
                   << "arg4 to 9: M (256x), N(128x), K(32x), StrideA, StrideB, StrideC" << std::endl
-                  << "arg10: NumSKBlocks(optional)" << std::endl;
+                  << "arg10: stream-k select (0: all DP, 1: 1-tile SK, 2: 2-tile SK)"
+                  << "\narg11: Grid_size(-1 for max occupancy)" << std::endl;
         return false;
     }
 

example/01_gemm/gemm_xdl_fp16_streamk_v3.cpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2024, Advanced Micro Devices, Inc. All rights reserved.
+
+#include "common.hpp"
+
+#include "ck/tensor_operation/gpu/device/impl/device_gemm_xdl_cshuffle_streamk_v3.hpp"
+
+using ADataType        = ck::half_t;
+using BDataType        = ck::half_t;
+using AccDataType      = float;
+using CShuffleDataType = ck::half_t;
+using CDataType        = ck::half_t;
+
+using ALayout = Row;
+using BLayout = Row;
+using CLayout = Row;
+
+using AElementOp = PassThrough;
+using BElementOp = PassThrough;
+using CElementOp = PassThrough;
+
+static constexpr auto GemmDefault = ck::tensor_operation::device::GemmSpecialization::MNPadding;
+
+// clang-format off
+using DeviceGemmV2_Streamk_Instance = 
+    ck::tensor_operation::device::DeviceGemm_Xdl_CShuffle_Streamk_V3<
+        ALayout,   BLayout,  CLayout,   
+        ADataType,   BDataType,  CDataType,  AccDataType,  CShuffleDataType, 
+        PassThrough, PassThrough, PassThrough, GemmDefault, 
+        256,
+        224, 256, 
+        64, 8, 2,
+        16,   16,
+        7,    8,
+        S<8, 32, 1>,  S<1, 0, 2>,  S<1, 0, 2>, 
+        2, 8, 8, 0,
+        S<8, 32, 1>,  S<0, 2, 1>,  S<0, 2, 1>, 
+        1, 8, 2, 0,
+        1, 2, S<1, 32, 1, 8>, 8,
+        ck::BlockGemmPipelineScheduler::Intrawave,ck::BlockGemmPipelineVersion::v3>;
+// clang-format on
+
+using ReferenceGemmInstance = ck::tensor_operation::host::
+    ReferenceGemm<ADataType, BDataType, CDataType, AccDataType, AElementOp, BElementOp, CElementOp>;
+
+#include "run_gemm_example_streamk_v2.inc"
+
+int main(int argc, char* argv[]) { return !run_gemm_universal_streamk_example(argc, argv); }

example/01_gemm/run_gemm_example_streamk_v2.inc

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2024, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+template <typename DataType>
+inline __host__ __device__ constexpr double get_rtol()
+{
+    if constexpr(std::is_same_v<DataType, float>)
+    {
+        return 1e-3;
+    }
+    else if constexpr(std::is_same_v<DataType, double>)
+    {
+        return 1e-6;
+    }
+    else if constexpr(std::is_same_v<DataType, ck::half_t>)
+    {
+        return 1e-3;
+    }
+    else if constexpr(std::is_same_v<DataType, ck::bhalf_t>)
+    {
+        return 5e-2;
+    }
+    else if constexpr(std::is_same_v<DataType, int32_t>)
+    {
+        return 1e-1;
+    }
+    else if constexpr(std::is_same_v<DataType, int8_t>)
+    {
+        return 1e-1;
+    }
+    else if constexpr(std::is_same_v<DataType, ck::f8_t>)
+    {
+        return 1e-1; // 240 and 224 are acceptable
+    }
+    else if constexpr(std::is_same_v<DataType, ck::bf8_t>)
+    {
+        return 1.5e-1; // 57344 and 49152 are acceptable
+    }
+    else
+    {
+        return 1e-3;
+    }
+}
+
+template <typename DataType>
+inline __host__ __device__ constexpr double get_atol()
+{
+    if constexpr(std::is_same_v<DataType, float>)
+    {
+        return 1e-3;
+    }
+    else if constexpr(std::is_same_v<DataType, double>)
+    {
+        return 1e-6;
+    }
+    else if constexpr(std::is_same_v<DataType, ck::half_t>)
+    {
+        return 1e-3;
+    }
+    else if constexpr(std::is_same_v<DataType, ck::bhalf_t>)
+    {
+        return 5e-2;
+    }
+    else if constexpr(std::is_same_v<DataType, int32_t>)
+    {
+        return 1e-1;
+    }
+    else if constexpr(std::is_same_v<DataType, int8_t>)
+    {
+        return 1e-1;
+    }
+    else if constexpr(std::is_same_v<DataType, ck::f8_t>)
+    {
+        return 16.1; // 240 and 224 are acceptable
+    }
+    else if constexpr(std::is_same_v<DataType, ck::bf8_t>)
+    {
+        return 8192.1; // 57344 and 49152 are acceptable
+    }
+    else
+    {
+        return 1e-3;
+    }
+}
+
+template <typename ProblemType>
+bool run_gemm(const ProblemType& problem_size, const ExecutionConfig& config)
+{
+#if defined(BUILD_INT4_EXAMPLE) && defined(CK_EXPERIMENTAL_BIT_INT_EXTENSION_INT4)
+    static_assert(sizeof(ck::int4_t) == sizeof(int8_t));
+#endif
+
+    using namespace ck::literals;
+
+    auto M           = problem_size.M;
+    auto N           = problem_size.N;
+    auto K           = problem_size.K;
+    auto StrideA     = problem_size.StrideA;
+    auto StrideB     = problem_size.StrideB;
+    auto StrideC     = problem_size.StrideC;
+    auto Grid_size   = problem_size.Grid_size;
+    auto Streamk_sel = problem_size.Streamk_sel;
+
+    auto f_host_tensor_descriptor =
+        [](std::size_t row, std::size_t col, std::size_t stride, auto layout) {
+            if constexpr(std::is_same_v<decltype(layout), ck::tensor_layout::gemm::RowMajor>)
+            {
+                return HostTensorDescriptor({row, col}, {stride, 1_uz});
+            }
+            else
+            {
+                return HostTensorDescriptor({row, col}, {1_uz, stride});
+            }
+        };
+
+    auto f_get_default_stride =
+        [](std::size_t row, std::size_t col, ck::index_t stride, auto layout) {
+            if(stride == -1)
+            {
+                // give a chance if stride is -1, return a default packed stride
+                if constexpr(std::is_same_v<decltype(layout), ck::tensor_layout::gemm::RowMajor>)
+                {
+                    return static_cast<std::size_t>(col);
+                }
+                else
+                {
+                    return static_cast<std::size_t>(row);
+                }
+            }
+            else
+                return static_cast<std::size_t>(stride);
+        };
+
+    auto f_get_default_streamk_policy = [](ck::index_t streamk_sel) {
+        if(streamk_sel == -1)
+        {
+            return static_cast<std::size_t>(4);
+        }
+        else
+            return static_cast<std::size_t>(streamk_sel);
+    };
+
+    StrideA = f_get_default_stride(M, K, StrideA, ALayout{});
+    StrideB = f_get_default_stride(K, N, StrideB, BLayout{});
+    StrideC = f_get_default_stride(M, N, StrideC, CLayout{});
+
+    Streamk_sel = f_get_default_streamk_policy(Streamk_sel);
+
+    Tensor<ADataType> a_m_k(f_host_tensor_descriptor(M, K, StrideA, ALayout{}));
+    Tensor<BDataType> b_k_n(f_host_tensor_descriptor(K, N, StrideB, BLayout{}));
+
+    switch(config.init_method)
+    {
+    case 0:
+        a_m_k.GenerateTensorValue(GeneratorTensor_1<ADataType>{1});
+        b_k_n.GenerateTensorValue(GeneratorTensor_1<BDataType>{1});
+        break;
+    case 1:
+        a_m_k.GenerateTensorValue(GeneratorTensor_2<ADataType>{-2, 2});
+        b_k_n.GenerateTensorValue(GeneratorTensor_2<BDataType>{-2, 2});
+        break;
+    case 2:
+        a_m_k.GenerateTensorValue(GeneratorTensor_1<ADataType>{1});
+        b_k_n.GenerateTensorValue(GeneratorTensor_2<BDataType>{-2, 2});
+        break;
+    case 3:
+        a_m_k.GenerateTensorValue(GeneratorTensor_2<ADataType>{-2, 2});
+        b_k_n.GenerateTensorValue(GeneratorTensor_1<BDataType>{1});
+        break;
+    default:
+        a_m_k.GenerateTensorValue(GeneratorTensor_3<ADataType>{0.0, 1.0});
+        b_k_n.GenerateTensorValue(GeneratorTensor_3<BDataType>{-0.5, 0.5});
+    }
+
+    Tensor<CDataType> c_m_n_host_result(f_host_tensor_descriptor(M, N, StrideC, CLayout{}));
+    Tensor<CDataType> c_m_n_device_result(f_host_tensor_descriptor(M, N, StrideC, CLayout{}));
+
+    std::cout << "a_m_k: " << a_m_k.mDesc << std::endl;
+    std::cout << "b_k_n: " << b_k_n.mDesc << std::endl;
+    std::cout << "c_m_n: " << c_m_n_host_result.mDesc << std::endl;
+
+#ifdef BUILD_INT4_EXAMPLE
+    DeviceMem a_m_k_device_buf(sizeof(KernelADataType) * a_m_k.mDesc.GetElementSpaceSize());
+    DeviceMem b_k_n_device_buf(sizeof(KernelBDataType) * b_k_n.mDesc.GetElementSpaceSize());
+    DeviceMem c_m_n_device_buf(sizeof(KernelCDataType) *
+                               c_m_n_device_result.mDesc.GetElementSpaceSize());
+
+    const Tensor<KernelADataType> a_m_k_converted(a_m_k);
+    const Tensor<KernelBDataType> b_k_n_converted(b_k_n);
+
+    a_m_k_device_buf.ToDevice(a_m_k_converted.mData.data());
+    b_k_n_device_buf.ToDevice(b_k_n_converted.mData.data());
+#else
+    DeviceMem a_m_k_device_buf(sizeof(ADataType) * a_m_k.mDesc.GetElementSpaceSize());
+    DeviceMem b_k_n_device_buf(sizeof(BDataType) * b_k_n.mDesc.GetElementSpaceSize());
+    DeviceMem c_m_n_device_buf(sizeof(CDataType) * c_m_n_device_result.mDesc.GetElementSpaceSize());
+
+    a_m_k_device_buf.ToDevice(a_m_k.mData.data());
+    b_k_n_device_buf.ToDevice(b_k_n.mData.data());
+#endif
+    DeviceMem workspace;
+
+    auto a_element_op = AElementOp{};
+    auto b_element_op = BElementOp{};
+    auto c_element_op = CElementOp{};
+
+    // do GEMM
+    auto gemm      = DeviceGemmV2_Streamk_Instance{};
+    auto invoker   = gemm.MakeInvoker();
+    float ave_time = 0;
+
+    auto argument = gemm.MakeArgument(
+#ifdef BUILD_INT4_EXAMPLE
+        static_cast<KernelADataType*>(a_m_k_device_buf.GetDeviceBuffer()),
+        static_cast<KernelBDataType*>(b_k_n_device_buf.GetDeviceBuffer()),
+        static_cast<KernelCDataType*>(c_m_n_device_buf.GetDeviceBuffer()),
+#else
+        static_cast<ADataType*>(a_m_k_device_buf.GetDeviceBuffer()),
+        static_cast<BDataType*>(b_k_n_device_buf.GetDeviceBuffer()),
+        static_cast<CDataType*>(c_m_n_device_buf.GetDeviceBuffer()),
+#endif
+        M,
+        N,
+        K,
+        StrideA,
+        StrideB,
+        StrideC,
+        Streamk_sel,
+        Grid_size,
+        a_element_op,
+        b_element_op,
+        c_element_op);
+
+    if(!gemm.IsSupportedArgument(argument))
+    {
+        std::cerr << gemm.GetTypeString() << " does not support this problem" << std::endl;
+
+        return true;
+    }
+
+    bool pass = true;
+    if(config.do_verification)
+    {
+        auto ref_gemm    = ReferenceGemmInstance{};
+        auto ref_invoker = ref_gemm.MakeInvoker();
+
+        auto ref_argument = ref_gemm.MakeArgument(
+            a_m_k, b_k_n, c_m_n_host_result, PassThrough{}, PassThrough{}, PassThrough{});
+
+        ref_invoker.Run(ref_argument);
+
+        ave_time = invoker.Run(argument, StreamConfig{nullptr, false, 1});
+#ifdef BUILD_INT4_EXAMPLE
+        Tensor<CDataType> c_m_n_device_result_converted(c_m_n_host_result.mDesc);
+
+        c_m_n_device_buf.FromDevice(c_m_n_device_result_converted.mData.data());
+
+        c_m_n_device_result = c_m_n_device_result_converted.CopyAsType<CDataType>();
+
+        return ck::utils::check_err(c_m_n_device_result_converted, c_m_n_host_result);
+#else
+        c_m_n_device_buf.FromDevice(c_m_n_device_result.mData.data());
+
+        pass &= ck::utils::check_err(c_m_n_device_result,
+                                     c_m_n_host_result,
+                                     "Error: Incorrect results!",
+                                     get_rtol<CDataType>(),
+                                     get_atol<CDataType>());
+#endif
+    }
+
+    if(config.time_kernel)
+    {
+        ave_time = invoker.Run(argument, StreamConfig{nullptr, config.time_kernel});
+
+        std::size_t flop = 2_uz * M * N * K;
+        std::size_t num_btype =
+            sizeof(ADataType) * M * K + sizeof(BDataType) * K * N + sizeof(CDataType) * M * N;
+
+        float tflops = static_cast<float>(flop) / 1.E9 / ave_time;
+
+        float gb_per_sec = num_btype / 1.E6 / ave_time;
+
+        std::cout << "Perf: " << ave_time << " ms, " << tflops << " TFlops, " << gb_per_sec
+                  << " GB/s, " << gemm.GetTypeString() << std::endl;
+    }
+    return pass;
+}
+
+bool run_gemm_universal_streamk_example(int argc, char* argv[])
+{
+    ProblemSizeStreamK_universal problem_size;
+    ExecutionConfig config;
+
+    return !parse_cmd_args(argc, argv, problem_size, config) || run_gemm(problem_size, config);
+}

example/CMakeLists.txt

@@ -67,7 +67,7 @@ function(add_example_executable EXAMPLE_NAME FILE_NAME)
     endforeach()
     #Do not build any WMMA examples if gfx11 targets are not on the list
     foreach(source IN LISTS FILE_NAME)
-	if(NOT GPU_TARGETS MATCHES "gfx11" AND NOT GPU_TARGETS MATCHES "gfx12" AND source MATCHES "_wmma")
+	if(NOT EX_TARGETS MATCHES "gfx11" AND NOT EX_TARGETS MATCHES "gfx12" AND source MATCHES "_wmma")
             message("removing wmma example ${source} ")
             list(REMOVE_ITEM FILE_NAME "${source}")
         endif()
@@ -154,7 +154,7 @@ function(add_example_executable_no_testing EXAMPLE_NAME FILE_NAME)
     endforeach()
     #Do not build any WMMA examples if gfx11 targets are not on the list
     foreach(source IN LISTS FILE_NAME)
-	if(NOT GPU_TARGETS MATCHES "gfx11" AND NOT GPU_TARGETS MATCHES "gfx12" AND source MATCHES "_wmma")
+	if(NOT EX_TARGETS MATCHES "gfx11" AND NOT EX_TARGETS MATCHES "gfx12" AND source MATCHES "_wmma")
             message("removing wmma example ${source} ")
             list(REMOVE_ITEM FILE_NAME "${source}")
         endif()

example/ck_tile/01_fmha/codegen/ops/fmha_bwd.py

@@ -271,7 +271,9 @@ class FmhaBwdApiPool:
                 per_hdim_case = per_hdim_case + FMHA_BWD_API_PER_HDIM_CASE.format(F_if=if_j, F_hdim=hdim, F_inner_dispatch=inners)
             if_i = 'if' if i == 0 else 'else if'
             per_dtypes = per_dtypes + FMHA_BWD_API_PER_DTYPE.format(F_if=if_i, F_dtype=dtype, F_hdim_case=per_hdim_case)
-
+        if not per_dtypes:
+            # empty string we add some ignore to suppress warning in api
+            per_dtypes += '    (void)t ; (void)s ; (void)a;'
         return FMHA_BWD_KERNEL_HEADER + FMHA_BWD_API.format(F_dispatch = per_dtypes)
 
 # GEMM0: Q@K=S^T

example/ck_tile/01_fmha/codegen/ops/fmha_fwd.py

@@ -278,6 +278,9 @@ class FmhaFwdApiPool:
                 per_hdim_case = per_hdim_case + FMHA_FWD_API_PER_HDIM_CASE.format(F_if=if_j, F_hdim=hdim, F_inner_dispatch=inners)
             if_i = 'if' if i == 0 else 'else if'
             per_dtypes = per_dtypes + FMHA_FWD_API_PER_DTYPE.format(F_if=if_i, F_dtype=dtype, F_hdim_case=per_hdim_case)
+        if not per_dtypes:
+            # empty string we add some ignore to suppress warning in api
+            per_dtypes += '    (void)t ; (void)s ; (void)a;'
         return FMHA_FWD_KERNEL_HEADER + FMHA_FWD_API.format(F_dispatch = per_dtypes)
 
 @dataclass

example/ck_tile/01_fmha/codegen/ops/fmha_fwd_splitkv.py

@@ -331,6 +331,9 @@ class FmhaFwdSplitKVApiPool:
                 per_hdim_case = per_hdim_case + FMHA_FWD_API_PER_HDIM_CASE.format(F_if=if_j, F_hdim=hdim, F_inner_dispatch=inners)
             if_i = 'if' if i == 0 else 'else if'
             per_dtypes = per_dtypes + FMHA_FWD_API_PER_DTYPE.format(F_if=if_i, F_dtype=dtype, F_hdim_case=per_hdim_case)
+        if not per_dtypes:
+            # empty string we add some ignore to suppress warning in api
+            per_dtypes += '    (void)t ; (void)s ; (void)a;'
         return FMHA_FWD_KERNEL_HEADER + FMHA_FWD_SPLITKV_API.format(F_dispatch = per_dtypes)
 
 @dataclass

include/ck/tensor_operation/gpu/device/device_gemm_streamk_v2.hpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2024, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+#include "ck/tensor_operation/gpu/device/device_base.hpp"
+
+namespace ck {
+namespace tensor_operation {
+namespace device {
+
+template <typename ALayout,
+          typename BLayout,
+          typename CLayout,
+          typename ADataType,
+          typename BDataType,
+          typename CDataType,
+          typename AElementwiseOperation,
+          typename BElementwiseOperation,
+          typename CElementwiseOperation>
+struct DeviceGemm_Streamk_V2 : public BaseOperator
+{
+    virtual std::unique_ptr<BaseArgument>
+    MakeArgumentPointer(const void* p_a,
+                        const void* p_b,
+                        void* p_c,
+                        ck::index_t M,
+                        ck::index_t N,
+                        ck::index_t K,
+                        ck::index_t StrideA,
+                        ck::index_t StrideB,
+                        ck::index_t StrideC,
+                        ck::index_t Streamk_sel,
+                        ck::index_t Grid_size,
+                        AElementwiseOperation a_element_op,
+                        BElementwiseOperation b_element_op,
+                        CElementwiseOperation c_element_op) = 0;
+
+    virtual std::unique_ptr<BaseInvoker> MakeInvokerPointer() = 0;
+};
+
+} // namespace device
+} // namespace tensor_operation
+} // namespace ck

include/ck/tensor_operation/gpu/device/impl/device_gemm_xdl_cshuffle_streamk_v3.hpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2024, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+#include <iostream>
+#include <sstream>
+
+#include "ck/utility/common_header.hpp"
+#include "ck/tensor_description/tensor_descriptor.hpp"
+#include "ck/tensor_description/tensor_descriptor_helper.hpp"
+#include "ck/tensor_operation/gpu/device/tensor_layout.hpp"
+#include "ck/tensor_operation/gpu/device/device_gemm_streamk_v2.hpp"
+#include "ck/tensor_operation/gpu/device/gemm_specialization.hpp"
+#include "ck/tensor_operation/gpu/grid/gridwise_gemm_xdl_cshuffle_streamk_v3.hpp"
+#include "ck/host_utility/device_prop.hpp"
+#include "ck/host_utility/kernel_launch.hpp"
+#include "ck/host_utility/flush_cache.hpp"
+
+namespace ck {
+namespace tensor_operation {
+namespace device {
+
+template <typename ALayout,
+          typename BLayout,
+          typename CLayout,
+          typename ADataType,
+          typename BDataType,
+          typename CDataType,
+          typename GemmAccDataType,
+          typename CShuffleDataType,
+          typename AElementwiseOperation,
+          typename BElementwiseOperation,
+          typename CElementwiseOperation,
+          GemmSpecialization GemmSpec,
+          index_t BlockSize,
+          index_t MPerBlock,
+          index_t NPerBlock,
+          index_t KPerBlock,
+          index_t AK1,
+          index_t BK1,
+          index_t MPerXDL,
+          index_t NPerXDL,
+          index_t MXdlPerWave,
+          index_t NXdlPerWave,
+          typename ABlockTransferThreadClusterLengths_AK0_M_AK1,
+          typename ABlockTransferThreadClusterArrangeOrder,
+          typename ABlockTransferSrcAccessOrder,
+          index_t ABlockTransferSrcVectorDim,
+          index_t ABlockTransferSrcScalarPerVector,
+          index_t ABlockTransferDstScalarPerVector_AK1,
+          bool ABlockLdsExtraM,
+          typename BBlockTransferThreadClusterLengths_BK0_N_BK1,
+          typename BBlockTransferThreadClusterArrangeOrder,
+          typename BBlockTransferSrcAccessOrder,
+          index_t BBlockTransferSrcVectorDim,
+          index_t BBlockTransferSrcScalarPerVector,
+          index_t BBlockTransferDstScalarPerVector_BK1,
+          bool BBlockLdsExtraN,
+          index_t CShuffleMXdlPerWavePerShuffle,
+          index_t CShuffleNXdlPerWavePerShuffle,
+          typename CShuffleBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
+          index_t CShuffleBlockTransferScalarPerVector_NPerBlock,
+          BlockGemmPipelineScheduler BlkGemmPipeSched = BlockGemmPipelineScheduler::Intrawave,
+          BlockGemmPipelineVersion BlkGemmPipelineVer = BlockGemmPipelineVersion::v1,
+          typename ComputeTypeA                       = CDataType,
+          typename ComputeTypeB                       = ComputeTypeA>
+struct DeviceGemm_Xdl_CShuffle_Streamk_V3 : public DeviceGemm_Streamk_V2<ALayout,
+                                                                         BLayout,
+                                                                         CLayout,
+                                                                         ADataType,
+                                                                         BDataType,
+                                                                         CDataType,
+                                                                         AElementwiseOperation,
+                                                                         BElementwiseOperation,
+                                                                         CElementwiseOperation>
+{
+    // GridwiseGemm
+    using GridwiseGemm = GridwiseGemm_xdl_cshuffle_streamk_v3<
+        ALayout,
+        BLayout,
+        CLayout,
+        ADataType,
+        BDataType,
+        GemmAccDataType,
+        CShuffleDataType,
+        CDataType,
+        AElementwiseOperation,
+        BElementwiseOperation,
+        CElementwiseOperation,
+        GemmSpec,
+        BlockSize,
+        MPerBlock,
+        NPerBlock,
+        KPerBlock,
+        AK1,
+        BK1,
+        MPerXDL,
+        NPerXDL,
+        MXdlPerWave,
+        NXdlPerWave,
+        ABlockTransferThreadClusterLengths_AK0_M_AK1,
+        ABlockTransferThreadClusterArrangeOrder,
+        ABlockTransferSrcAccessOrder,
+        ABlockTransferSrcVectorDim,
+        ABlockTransferSrcScalarPerVector,
+        ABlockTransferDstScalarPerVector_AK1,
+        false,
+        ABlockLdsExtraM,
+        BBlockTransferThreadClusterLengths_BK0_N_BK1,
+        BBlockTransferThreadClusterArrangeOrder,
+        BBlockTransferSrcAccessOrder,
+        BBlockTransferSrcVectorDim,
+        BBlockTransferSrcScalarPerVector,
+        BBlockTransferDstScalarPerVector_BK1,
+        false,
+        BBlockLdsExtraN,
+        CShuffleMXdlPerWavePerShuffle,
+        CShuffleNXdlPerWavePerShuffle,
+        CShuffleBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
+        CShuffleBlockTransferScalarPerVector_NPerBlock,
+        BlkGemmPipeSched,
+        BlkGemmPipelineVer,
+        ComputeTypeA,
+        ComputeTypeB>;
+
+    using Argument = typename GridwiseGemm::Argument;
+
+    // Invoker
+    struct Invoker : public BaseInvoker
+    {
+        float Run(const Argument& arg, const StreamConfig& stream_config = StreamConfig{})
+        {
+            if(stream_config.log_level_ > 0)
+            {
+                arg.Print();
+            }
+
+            if(!GridwiseGemm::CheckValidity(arg))
+            {
+                throw std::runtime_error("wrong! GridwiseGemm has invalid setting");
+            }
+
+            float ave_time = 0;
+
+            index_t k_grain = KPerBlock;
+            index_t K_split = (arg.K + k_grain - 1) / k_grain * KPerBlock;
+
+            const bool has_main_k_block_loop = GridwiseGemm::CalculateHasMainKBlockLoop(K_split);
+            hipGetErrorString(hipMemsetAsync(
+                arg.p_c_grid, 0, arg.M * arg.N * sizeof(CDataType), stream_config.stream_id_));
+            const auto Run = [&](const auto& kernel) {
+                dim3 grid_dim;
+                if(arg.Grid_size < 0)
+                {
+                    int occupancy, num_cu;
+                    hipError_t rtn;
+                    rtn = hipOccupancyMaxActiveBlocksPerMultiprocessor(
+                        &occupancy, kernel, BlockSize, 0);
+                    hip_check_error(rtn);
+
+                    hipDeviceProp_t dev_prop;
+                    hipDevice_t dev;
+                    rtn = hipGetDevice(&dev);
+                    hip_check_error(rtn);
+                    rtn = hipGetDeviceProperties(&dev_prop, dev);
+                    hip_check_error(rtn);
+                    num_cu = dev_prop.multiProcessorCount;
+
+                    arg.Grid_size = num_cu * occupancy;
+                    grid_dim      = arg.Grid_size;
+                }
+                else
+                    grid_dim = arg.Grid_size;
+
+                if(stream_config.flush_cache)
+                {
+                    Argument arg_ = arg;
+                    ck::utility::RotatingMemWrapper<Argument> rotating_mem(
+                        arg_,
+                        stream_config.rotating_count,
+                        arg_.M * arg_.K * sizeof(ADataType),
+                        arg_.K * arg_.N * sizeof(BDataType));
+                    rotating_mem.Print();
+
+                    auto run_flush_cache = [&]() {
+                        // flush icache
+                        ck::utility::flush_icache();
+                        // rotating mem
+                        rotating_mem.Next();
+                    };
+
+                    ave_time = ck::utility::launch_and_time_kernel_with_preprocess<false>(
+                        stream_config, run_flush_cache, kernel, grid_dim, dim3(BlockSize), 0, arg_);
+                }
+                else
+                {
+
+                    ave_time = launch_and_time_kernel(
+                        stream_config, kernel, grid_dim, dim3(BlockSize), 0, arg);
+                }
+            };
+
+            constexpr index_t minimum_occupancy =
+                BlkGemmPipeSched == BlockGemmPipelineScheduler::Intrawave ? 1 : 2;
+
+            if(has_main_k_block_loop)
+            {
+                // Tail number always full
+                if constexpr(BlkGemmPipelineVer == BlockGemmPipelineVersion::v1 ||
+                             BlkGemmPipelineVer == BlockGemmPipelineVersion::v3)
+                {
+
+                    {
+                        const auto kernel =
+                            kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                        true,
+                                                        InMemoryDataOperationEnum::Set,
+                                                        minimum_occupancy>;
+                        Run(kernel);
+                    }
+                }
+                // Tail number could be One to Seven
+                else if constexpr(BlkGemmPipelineVer == BlockGemmPipelineVersion::v2)
+                {
+
+                    {
+                        if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) == TailNumber::One)
+                        {
+                            const auto kernel =
+                                kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                            true,
+                                                            InMemoryDataOperationEnum::Set,
+                                                            minimum_occupancy,
+                                                            TailNumber::One>;
+                            Run(kernel);
+                        }
+                        else if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) ==
+                                TailNumber::Full)
+                        {
+                            const auto kernel =
+                                kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                            true,
+                                                            InMemoryDataOperationEnum::Set,
+                                                            minimum_occupancy,
+                                                            TailNumber::Full>;
+                            Run(kernel);
+                        }
+
+                        if constexpr(GridwiseGemm::BlockwiseGemmPipe::PrefetchStages > 2)
+                        {
+                            if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) == TailNumber::Two)
+                            {
+                                const auto kernel =
+                                    kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                                true,
+                                                                InMemoryDataOperationEnum::Set,
+                                                                minimum_occupancy,
+                                                                TailNumber::Two>;
+                                Run(kernel);
+                            }
+                        }
+
+                        if constexpr(GridwiseGemm::BlockwiseGemmPipe::PrefetchStages > 3)
+                        {
+                            if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) ==
+                               TailNumber::Three)
+                            {
+                                const auto kernel =
+                                    kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                                true,
+                                                                InMemoryDataOperationEnum::Set,
+                                                                minimum_occupancy,
+                                                                TailNumber::Three>;
+                                Run(kernel);
+                            }
+                        }
+
+                        if constexpr(GridwiseGemm::BlockwiseGemmPipe::PrefetchStages > 4)
+                        {
+                            if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) ==
+                               TailNumber::Four)
+                            {
+                                const auto kernel =
+                                    kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                                true,
+                                                                InMemoryDataOperationEnum::Set,
+                                                                minimum_occupancy,
+                                                                TailNumber::Four>;
+                                Run(kernel);
+                            }
+                        }
+
+                        if constexpr(GridwiseGemm::BlockwiseGemmPipe::PrefetchStages > 5)
+                        {
+                            if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) ==
+                               TailNumber::Five)
+                            {
+                                const auto kernel =
+                                    kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                                true,
+                                                                InMemoryDataOperationEnum::Set,
+                                                                minimum_occupancy,
+                                                                TailNumber::Five>;
+                                Run(kernel);
+                            }
+                        }
+
+                        if constexpr(GridwiseGemm::BlockwiseGemmPipe::PrefetchStages > 6)
+                        {
+                            if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) == TailNumber::Six)
+                            {
+                                const auto kernel =
+                                    kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                                true,
+                                                                InMemoryDataOperationEnum::Set,
+                                                                minimum_occupancy,
+                                                                TailNumber::Six>;
+                                Run(kernel);
+                            }
+                        }
+
+                        if constexpr(GridwiseGemm::BlockwiseGemmPipe::PrefetchStages > 7)
+                        {
+                            if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) ==
+                               TailNumber::Seven)
+                            {
+                                const auto kernel =
+                                    kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                                true,
+                                                                InMemoryDataOperationEnum::Set,
+                                                                minimum_occupancy,
+                                                                TailNumber::Seven>;
+                                Run(kernel);
+                            }
+                        }
+                    }
+                }
+                // Tail number could be Odd or Even
+                else if constexpr(BlkGemmPipelineVer == BlockGemmPipelineVersion::v4)
+                {
+
+                    {
+                        if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) == TailNumber::Odd)
+                        {
+                            const auto kernel =
+                                kernel_gemm_xdl_cshuffle_v3_2lds<GridwiseGemm,
+                                                                 true,
+                                                                 InMemoryDataOperationEnum::Set,
+                                                                 minimum_occupancy,
+                                                                 TailNumber::Odd>;
+                            Run(kernel);
+                        }
+                        else
+                        {
+                            const auto kernel =
+                                kernel_gemm_xdl_cshuffle_v3_2lds<GridwiseGemm,
+                                                                 true,
+                                                                 InMemoryDataOperationEnum::Set,
+                                                                 minimum_occupancy,
+                                                                 TailNumber::Even>;
+                            Run(kernel);
+                        }
+                    }
+                }
+                else
+                {
+
+                    {
+                        if(GridwiseGemm::CalculateKBlockLoopTailNum(K_split) == TailNumber::Odd)
+                        {
+                            const auto kernel =
+                                kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                            true,
+                                                            InMemoryDataOperationEnum::Set,
+                                                            minimum_occupancy,
+                                                            TailNumber::Odd>;
+                            Run(kernel);
+                        }
+                        else
+                        {
+                            const auto kernel =
+                                kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                            true,
+                                                            InMemoryDataOperationEnum::Set,
+                                                            minimum_occupancy,
+                                                            TailNumber::Even>;
+                            Run(kernel);
+                        }
+                    }
+                }
+            }
+            else
+            {
+                // Tail number always 1
+                if constexpr(BlkGemmPipelineVer == BlockGemmPipelineVersion::v1)
+                {
+
+                    {
+                        const auto kernel =
+                            kernel_gemm_xdl_cshuffle_v3<GridwiseGemm,
+                                                        false,
+                                                        InMemoryDataOperationEnum::Set,
+                                                        minimum_occupancy>;
+                        Run(kernel);
+                    }
+                }
+            }
+
+            return ave_time;
+        }
+
+        // polymorphic
+        float Run(const BaseArgument* p_arg,
+                  const StreamConfig& stream_config = StreamConfig{}) override
+        {
+            return Run(*dynamic_cast<const Argument*>(p_arg), stream_config);
+        }
+    };
+
+    static constexpr bool IsValidCompilationParameter()
+    {
+        // TODO: properly implement this check
+        return true;
+    }
+
+    static bool IsSupportedArgument(const Argument& arg)
+    {
+        if(!ck::is_xdl_supported())
+        {
+            return false;
+        }
+
+        if((arg.K % AK1 != 0 || arg.K % BK1 != 0) && !(GemmSpec == GemmSpecialization::MKPadding ||
+                                                       GemmSpec == GemmSpecialization::NKPadding ||
+                                                       GemmSpec == GemmSpecialization::MNKPadding ||
+                                                       GemmSpec == GemmSpecialization::KPadding))
+        {
+            return false;
+        }
+
+        return GridwiseGemm::CheckValidity(arg);
+    }
+
+    // polymorphic
+    bool IsSupportedArgument(const BaseArgument* p_arg) override
+    {
+        return IsSupportedArgument(*dynamic_cast<const Argument*>(p_arg));
+    }
+
+    static auto MakeArgument(const ADataType* p_a,
+                             const BDataType* p_b,
+                             CDataType* p_c,
+                             index_t M,
+                             index_t N,
+                             index_t K,
+                             index_t StrideA,
+                             index_t StrideB,
+                             index_t StrideC,
+                             index_t streamk_sel,
+                             index_t Grid_size,
+                             AElementwiseOperation,
+                             BElementwiseOperation,
+                             CElementwiseOperation)
+    {
+
+        return Argument{
+            p_a, p_b, p_c, M, N, K, StrideA, StrideB, StrideC, streamk_sel, Grid_size}; // HS
+    }
+
+    static auto MakeInvoker() { return Invoker{}; }
+
+    // polymorphic
+    std::unique_ptr<BaseArgument> MakeArgumentPointer(const void* p_a,
+                                                      const void* p_b,
+                                                      void* p_c,
+                                                      index_t M,
+                                                      index_t N,
+                                                      index_t K,
+                                                      index_t StrideA,
+                                                      index_t StrideB,
+                                                      index_t StrideC,
+                                                      index_t streamk_sel,
+                                                      index_t Grid_size,
+                                                      AElementwiseOperation,
+                                                      BElementwiseOperation,
+                                                      CElementwiseOperation) override
+    {
+        return std::make_unique<Argument>(static_cast<const ADataType*>(p_a),
+                                          static_cast<const BDataType*>(p_b),
+                                          static_cast<CDataType*>(p_c),
+                                          M,
+                                          N,
+                                          K,
+                                          StrideA,
+                                          StrideB,
+                                          StrideC,
+                                          streamk_sel,
+                                          Grid_size);
+    }
+
+    // polymorphic
+    std::unique_ptr<BaseInvoker> MakeInvokerPointer() override
+    {
+        return std::make_unique<Invoker>(Invoker{});
+    }
+
+    // polymorphic
+    std::string GetTypeString() const override
+    {
+        auto str = std::stringstream();
+
+        std::map<BlockGemmPipelineScheduler, std::string> BlkGemmPipelineSchedulerToString{
+            {BlockGemmPipelineScheduler::Intrawave, "Intrawave"},
+            {BlockGemmPipelineScheduler::Interwave, "Interwave"}};
+
+        std::map<BlockGemmPipelineVersion, std::string> BlkGemmPipelineVersionToString{
+            {BlockGemmPipelineVersion::v1, "v1"},
+            {BlockGemmPipelineVersion::v2, "v2"},
+            {BlockGemmPipelineVersion::v3, "v3"},
+            {BlockGemmPipelineVersion::v4, "v4"},
+            {BlockGemmPipelineVersion::v5, "v5"}};
+
+        // clang-format off
+        str << "DeviceGemmXdlUniversal"
+            << "<"
+            << getGemmSpecializationString(GemmSpec) << ", "
+            << std::string(ALayout::name)[0]
+            << std::string(BLayout::name)[0]
+            << std::string(CLayout::name)[0]
+            << ">"
+            << " BlkSize: "
+            << BlockSize << ", "
+            << "BlkTile: "
+            << MPerBlock<<"x"<<NPerBlock<<"x"<<KPerBlock << ", "
+            << "WaveTile: "
+            << MPerXDL<<"x"<<NPerXDL << ", "
+            << "WaveMap: "
+            << MXdlPerWave<<"x" << NXdlPerWave<<", "
+            << "VmemReadVec: "
+            << ABlockTransferSrcScalarPerVector<<"x"<<BBlockTransferSrcScalarPerVector<<", "
+            << "BlkGemmPipelineScheduler: "
+            << BlkGemmPipelineSchedulerToString[BlkGemmPipeSched] << ", "
+            << "BlkGemmPipelineVersion: "
+            << BlkGemmPipelineVersionToString[BlkGemmPipelineVer] << ", "
+            << "BlkGemmPipelinePrefetchStages: "
+            << GridwiseGemm::BlockwiseGemmPipe::PrefetchStages;
+        // clang-format on
+
+        return str.str();
+    }
+};
+
+} // namespace device
+} // namespace tensor_operation
+} // namespace ck

include/ck/tensor_operation/gpu/grid/block_to_ctile_map.hpp

@@ -1404,4 +1404,326 @@ struct BlockToCTileMap_GemmStreamK
     }
 };
 
+template <uint32_t MPerBlock_,
+          uint32_t NPerBlock_,
+          uint32_t KPerBlock_,
+          StreamKReductionStrategy ReductionStrategy_ = StreamKReductionStrategy::Atomic,
+          uint32_t TileSwizzleSubM_                   = 8,
+          index_t GroupNum                            = 8,
+          index_t M01_                                = 4>
+struct BlockToCTileMap_GemmStreamK_v2
+{
+    static constexpr uint32_t min_k_iters_per_sk_block          = 2;
+    static constexpr uint32_t MPerBlock                         = MPerBlock_;
+    static constexpr uint32_t NPerBlock                         = NPerBlock_;
+    static constexpr uint32_t KPerBlock                         = KPerBlock_;
+    static constexpr StreamKReductionStrategy ReductionStrategy = ReductionStrategy_;
+    static constexpr uint32_t tile_swizzle_sub_m                = TileSwizzleSubM_;
+
+    //--------------------------------------
+    // pass to device
+    mutable uint32_t sk_num_blocks;
+    uint32_t sk_num_big_blocks;
+    uint32_t dp_start_block_idx;
+    uint32_t reduction_start_block_idx;
+    uint32_t k_iters_per_big_block;
+    MDiv2 n_tiles;
+    MDiv k_iters_per_tile;
+    MDiv equiv_tiles_big;    // for reduction
+    MDiv equiv_tiles_little; // for reduction
+
+    // prefer construct on host
+    __host__ __device__ BlockToCTileMap_GemmStreamK_v2(
+        uint32_t m, uint32_t n, uint32_t k, uint32_t grid_size = 1, uint32_t streamk_sel = 1)
+    {
+        // total output tiles
+        uint32_t num_tiles =
+            math::integer_divide_ceil(m, MPerBlock) * math::integer_divide_ceil(n, NPerBlock);
+        k_iters_per_tile = MDiv(math::integer_divide_ceil(k, KPerBlock));
+
+        uint32_t dp_tiles, dp_num_blocks, sk_total_iters;
+
+        // default to regular DP GEMM if sk blocks == 0
+        if(streamk_sel == 0)
+        {
+            sk_num_blocks         = 0;
+            dp_tiles              = num_tiles;
+            sk_num_big_blocks     = 0;
+            k_iters_per_big_block = 0;
+
+            dp_num_blocks      = num_tiles; // all tile to be dp block
+            dp_start_block_idx = 0;
+            sk_total_iters     = 0; // clear this tiles
+        }
+        // 2-tile sk + DP GEMM
+        else
+        {
+
+            // check if there's enough work for DP+ stream-k
+            bool bigEnough = num_tiles > grid_size;
+            // select between stream-k strategies
+            uint32_t sk_tiles = 0;
+            if(streamk_sel == 1) // 1 tile stream-k
+            {
+                sk_tiles = bigEnough ? (num_tiles % grid_size) : num_tiles;
+            }
+            else if(streamk_sel == 2) // 2-tile stream-k
+            {
+                sk_tiles = bigEnough ? (grid_size + num_tiles % grid_size) : num_tiles;
+            }
+            else if(streamk_sel == 3) // 3-tile stream-k
+            {
+                sk_tiles = (num_tiles > (2 * grid_size)) ? (2 * grid_size + num_tiles % grid_size)
+                                                         : num_tiles;
+            }
+            else if(streamk_sel == 4) // 4-tile stream-k
+            {
+                sk_tiles = (num_tiles > (3 * grid_size)) ? (3 * grid_size + num_tiles % grid_size)
+                                                         : num_tiles;
+            }
+            sk_num_blocks = sk_tiles;
+            // remaining tiles are DP tiles
+            dp_tiles = bigEnough ? (num_tiles - sk_tiles) : 0;
+
+            sk_total_iters = k_iters_per_tile.get() * sk_tiles;
+
+            // k_iters_per_sk_block is the floor of avg each ck block loop over tiles.
+            // we need to decide how many iters for each sk block
+            // let m = k_iters_per_sk_block
+            // some of the sk block (little) will cover m iters, some (big) will cover m+1
+            // we have
+            // 1) l + b = sk_blocks
+            // 2) l * m + b * (m + 1) = sk_total_iters
+            //      => (l + b) * m + b = sk_total_iters
+            //      => sk_blocks * m + b = sk_total_iters
+            //      => b = sk_total_iters - m * sk_blocks
+            //      NOTE: big could be zero
+            uint32_t k_iters_per_sk_block = sk_total_iters / sk_num_blocks;
+            sk_num_big_blocks             = sk_total_iters - k_iters_per_sk_block * sk_num_blocks;
+            k_iters_per_big_block         = k_iters_per_sk_block + 1;
+
+            dp_num_blocks      = dp_tiles;
+            dp_start_block_idx = sk_num_blocks;
+        }
+
+        n_tiles = MDiv2(math::integer_divide_ceil(n, NPerBlock));
+        // using multiple blocks for parallel reduction
+        reduction_start_block_idx = dp_start_block_idx + dp_num_blocks;
+
+        if constexpr(ReductionStrategy == StreamKReductionStrategy::Reduction)
+        {
+            uint32_t upper_big    = math::lcm(k_iters_per_big_block, k_iters_per_tile.get());
+            uint32_t upper_little = math::lcm(k_iters_per_big_block - 1, k_iters_per_tile.get());
+            equiv_tiles_big       = MDiv(upper_big / k_iters_per_tile.get());
+            equiv_tiles_little    = MDiv(upper_little / k_iters_per_tile.get());
+        }
+    }
+
+    __host__ __device__ static constexpr index_t CalculateGridSize(index_t M, index_t N)
+    {
+        const auto M0 = math::integer_divide_ceil(M, MPerBlock);
+        const auto N0 = math::integer_divide_ceil(N, NPerBlock);
+
+        return M0 * N0;
+    }
+    __host__ __device__ uint32_t get_sk_total_iters() const
+    {
+        uint32_t sk_total_iters = sk_num_big_blocks * k_iters_per_big_block +
+                                  (sk_num_blocks - sk_num_big_blocks) * (k_iters_per_big_block - 1);
+        return sk_total_iters;
+    }
+
+    __host__ __device__ uint32_t get_sk_tiles() const
+    {
+        // tiles for sk
+        uint32_t sk_total_iters = get_sk_total_iters();
+        return k_iters_per_tile.div(sk_total_iters);
+    }
+
+    __host__ __device__ index_t get_grid_dims() const
+    {
+        if constexpr(ReductionStrategy == StreamKReductionStrategy::Reduction)
+        {
+            // return dim3(reduction_start_block_idx + get_sk_tiles(), 1, 1);
+            return reduction_start_block_idx + get_sk_tiles();
+        }
+        else
+            return reduction_start_block_idx;
+    }
+
+    __device__ uint32_t get_block_idx() const
+    {
+        // TODO: swizzle block index for better locality
+        return __builtin_amdgcn_readfirstlane(blockIdx.x);
+    }
+
+    __device__ void
+    get_block_itr(uint32_t block_idx, uint32_t& iter_start, uint32_t& iter_end) const
+    {
+        if(block_idx < sk_num_big_blocks)
+        {
+            iter_start = block_idx * k_iters_per_big_block;
+            iter_end   = iter_start + k_iters_per_big_block;
+        }
+        else if(block_idx < sk_num_blocks)
+        {
+            iter_start = (sk_num_big_blocks * k_iters_per_big_block) +
+                         (block_idx - sk_num_big_blocks) * (k_iters_per_big_block - 1);
+            iter_end = iter_start + (k_iters_per_big_block - 1);
+        }
+        else if(block_idx >= dp_start_block_idx)
+        {
+            uint32_t sk_total_iters     = get_sk_total_iters();
+            uint32_t dp_iters_per_block = k_iters_per_tile.get();
+            iter_start = sk_total_iters + (block_idx - dp_start_block_idx) * dp_iters_per_block;
+            iter_end   = iter_start + dp_iters_per_block;
+        }
+    }
+
+    __device__ uint32_t get_current_iter_length(uint32_t iter_start,
+                                                uint32_t iter_end,
+                                                uint32_t total_iter_length) const
+    {
+        uint32_t iter_length_mod, iter_length_quo /*unused*/;
+        k_iters_per_tile.divmod(iter_end, iter_length_quo, iter_length_mod);
+        uint32_t current_iter_length = math::min(
+            iter_length_mod == 0 ? (iter_end - iter_start) : iter_length_mod, total_iter_length);
+        return current_iter_length;
+    }
+
+    __device__ uint32_t get_tile_idx(uint32_t iter) const { return k_iters_per_tile.div(iter); }
+
+    __device__ void
+    get_tile_idx_with_offset(uint32_t iter, uint32_t& tile_idx, uint32_t& iter_offset) const
+    {
+        k_iters_per_tile.divmod(iter, tile_idx, iter_offset);
+    }
+
+    __device__ auto tile_to_spatial(uint32_t tile_idx, uint32_t m, uint32_t n) const
+    {
+        uint32_t m_tile_idx, n_tile_idx;
+        uint32_t n_tiles_value = math::integer_divide_ceil(n, NPerBlock);
+        n_tiles.divmod(tile_idx, n_tiles_value, m_tile_idx, n_tile_idx);
+
+        // // swizzle tile
+        uint32_t m_tiles = math::integer_divide_ceil(m, MPerBlock);
+
+        uint32_t tile_swizzle_sub_m_rem = m_tiles % tile_swizzle_sub_m;
+
+        const auto sub_m_adapt = (m_tile_idx < (m_tiles - tile_swizzle_sub_m_rem))
+                                     ? tile_swizzle_sub_m
+                                     : tile_swizzle_sub_m_rem;
+
+        uint32_t m_tile_idx_sub0, m_tile_idx_sub1;
+        m_tile_idx_sub0 = m_tile_idx / tile_swizzle_sub_m;
+        m_tile_idx_sub1 = m_tile_idx % tile_swizzle_sub_m;
+
+        uint32_t tile_idx_local = n_tile_idx + m_tile_idx_sub1 * n_tiles_value;
+
+        uint32_t m_tile_idx_with_adapt, n_tile_idx_with_adapt;
+
+        n_tile_idx_with_adapt = tile_idx_local / sub_m_adapt;
+        m_tile_idx_with_adapt = tile_idx_local % sub_m_adapt;
+        return make_tuple(m_tile_idx_with_adapt + m_tile_idx_sub0 * tile_swizzle_sub_m,
+                          n_tile_idx_with_adapt);
+    }
+
+    __host__ __device__ uint32_t get_workspace_size_for_acc(uint32_t acc_element_bytes) const
+    {
+        static constexpr uint32_t alignment = 128;
+        uint32_t acc_buffer_bytes =
+            MPerBlock * NPerBlock * get_total_acc_buffers() * acc_element_bytes;
+        return (acc_buffer_bytes + alignment - 1) / alignment * alignment;
+    }
+
+    __host__ __device__ uint32_t get_workspace_size_for_semaphore() const
+    {
+        return get_sk_tiles() * sizeof(uint32_t);
+    }
+
+    __host__ __device__ uint32_t get_workspace_size(uint32_t acc_element_bytes) const
+    {
+        return get_workspace_size_for_acc(acc_element_bytes) + get_workspace_size_for_semaphore();
+    }
+
+    __host__ __device__ uint32_t get_tile_intersections(uint32_t tiles_,
+                                                        const MDiv& equiv_tiles_) const
+    {
+        uint32_t tile_idx_        = tiles_ == 0 ? 0 : (tiles_ - 1);
+        uint32_t max_equiv_tiles_ = equiv_tiles_.get() - 1;
+        uint32_t quo_, rem_;
+        equiv_tiles_.divmod(tile_idx_, quo_, rem_);
+        return quo_ * max_equiv_tiles_ + rem_;
+    }
+
+    __host__ __device__ uint32_t get_tiles_cover_sk_block(uint32_t num_sk_blocks_,
+                                                          uint32_t iters_per_sk_block_) const
+    {
+        return k_iters_per_tile.div(num_sk_blocks_ * iters_per_sk_block_ + k_iters_per_tile.get() -
+                                    1);
+    }
+
+    __host__ __device__ uint32_t get_total_acc_buffers() const
+    {
+        uint32_t tiles_cover_big_blocks =
+            get_tiles_cover_sk_block(sk_num_big_blocks, k_iters_per_big_block);
+        uint32_t tiles_cover_little_blocks =
+            get_tiles_cover_sk_block(sk_num_blocks - sk_num_big_blocks, k_iters_per_big_block - 1);
+
+        uint32_t total_intersec_big =
+            get_tile_intersections(tiles_cover_big_blocks, equiv_tiles_big);
+        uint32_t total_intersec_little =
+            get_tile_intersections(tiles_cover_little_blocks, equiv_tiles_little);
+
+        return sk_num_blocks + total_intersec_big + total_intersec_little;
+    }
+
+    __device__ uint32_t get_acc_buffer_offset_from_tile(uint32_t tile_idx_) const
+    {
+        // TODO: from big to little
+        uint32_t tiles_cover_big_blocks =
+            get_tiles_cover_sk_block(sk_num_big_blocks, k_iters_per_big_block);
+        if(tile_idx_ < tiles_cover_big_blocks)
+        {
+            uint32_t touched_sk_blocks =
+                (tile_idx_ * k_iters_per_tile.get() + k_iters_per_big_block - 1) /
+                k_iters_per_big_block;
+            uint32_t current_intersec = get_tile_intersections(tile_idx_, equiv_tiles_big);
+            return touched_sk_blocks + current_intersec;
+        }
+        else
+        {
+            uint32_t iters_per_little_sk_block = k_iters_per_big_block - 1;
+            uint32_t tile_idx_little_reverse   = get_sk_tiles() - tile_idx_;
+            uint32_t touched_sk_blocks =
+                (tile_idx_little_reverse * k_iters_per_tile.get() + iters_per_little_sk_block - 1) /
+                iters_per_little_sk_block;
+            uint32_t current_intersec =
+                get_tile_intersections(tile_idx_little_reverse, equiv_tiles_little);
+            return get_total_acc_buffers() - (touched_sk_blocks + current_intersec);
+        }
+    }
+
+    __device__ uint32_t get_acc_buffer_offset_from_block(uint32_t block_idx_) const
+    {
+        uint32_t iters_per_big_sk_block    = k_iters_per_big_block;
+        uint32_t iters_per_little_sk_block = k_iters_per_big_block - 1;
+        if(block_idx_ < sk_num_big_blocks)
+        {
+            uint32_t touched_tiles    = k_iters_per_tile.div(block_idx_ * iters_per_big_sk_block +
+                                                          k_iters_per_tile.get() - 1);
+            uint32_t current_intersec = get_tile_intersections(touched_tiles, equiv_tiles_big);
+            return block_idx_ + current_intersec;
+        }
+        else
+        {
+            uint32_t block_idx_little_reverse = sk_num_blocks - block_idx_;
+            uint32_t touched_tiles            = k_iters_per_tile.div(
+                block_idx_little_reverse * iters_per_little_sk_block + k_iters_per_tile.get() - 1);
+            uint32_t current_intersec = get_tile_intersections(touched_tiles, equiv_tiles_little);
+            return get_total_acc_buffers() - (block_idx_little_reverse + current_intersec);
+        }
+    }
+};
+
 } // namespace ck

include/ck/tensor_operation/gpu/grid/gridwise_gemm_xdl_cshuffle_streamk_v3.hpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+#include "ck/utility/common_header.hpp"
+#include "ck/tensor_description/multi_index_transform_helper.hpp"
+#include "ck/tensor_description/tensor_descriptor.hpp"
+#include "ck/tensor_description/tensor_descriptor_helper.hpp"
+#include "ck/tensor_operation/gpu/grid/block_to_ctile_map.hpp"
+#include "ck/tensor_operation/gpu/block/blockwise_gemm_pipeline_xdlops_selector.hpp"
+#include "ck/tensor_operation/gpu/block/thread_group_tensor_slice_transfer_v4r1.hpp"
+#include "ck/tensor_operation/gpu/block/thread_group_tensor_slice_transfer_v6r1.hpp"
+#include "ck/tensor_operation/gpu/block/thread_group_tensor_slice_transfer_v6r1r2.hpp"
+#include "ck/tensor_operation/gpu/thread/threadwise_tensor_slice_transfer.hpp"
+#include "ck/tensor_operation/gpu/element/element_wise_operation.hpp"
+
+namespace ck {
+
+// Currently we do not have a elegant way to put single lds buffer & double lds buffer pipe in same
+// kernel function Blockers:
+// 1. Two separted declaration of __shared__ pointer is the key to make sure data access operate on
+// two lds chunks.
+// 2. Occupied __shared__ won't release until whole shader end, a.k.a AB and C may not use same lds
+// buffer when we declare __shared__ inside blkgemmpipe
+template <typename GridwiseGemm,
+          bool HasMainKBlockLoop,
+          InMemoryDataOperationEnum CGlobalMemoryDataOperation,
+          index_t MinimumOccupancy = 1,
+          TailNumber TailNum       = TailNumber::Full>
+__global__ void
+#if CK_USE_LAUNCH_BOUNDS
+    __launch_bounds__(CK_MAX_THREAD_PER_BLOCK, MinimumOccupancy)
+#endif
+        kernel_gemm_xdl_cshuffle_v3(typename GridwiseGemm::Argument karg)
+{
+#if(!defined(__HIP_DEVICE_COMPILE__) || defined(__gfx9__))
+    __shared__ char p_shared[GridwiseGemm::GetSharedMemoryNumberOfByte()];
+
+    GridwiseGemm::template Run<HasMainKBlockLoop, CGlobalMemoryDataOperation, TailNum>(
+        karg.p_a_grid, karg.p_b_grid, karg.p_c_grid, p_shared, karg);
+#else
+    ignore = karg;
+#endif // end of if (defined(__gfx9__))
+}
+
+template <typename GridwiseGemm,
+          bool HasMainKBlockLoop,
+          InMemoryDataOperationEnum CGlobalMemoryDataOperation,
+          index_t MinimumOccupancy = 1,
+          TailNumber TailNum       = TailNumber::Full>
+__global__ void
+#if CK_USE_LAUNCH_BOUNDS
+    __launch_bounds__(CK_MAX_THREAD_PER_BLOCK, MinimumOccupancy)
+#endif
+        kernel_gemm_xdl_cshuffle_v3_2lds(typename GridwiseGemm::Argument karg)
+{
+#if(!defined(__HIP_DEVICE_COMPILE__) || defined(__gfx9__))
+    // Pass two lds pointer is the key to tell compiler that ds_read/write
+    // operate on different lds chunk at same time without order dependecy
+    __shared__ char p_shared_0[GridwiseGemm::GetSharedMemoryNumberOfByte()];
+    __shared__ char p_shared_1[GridwiseGemm::GetSharedMemoryNumberOfByte()];
+
+    GridwiseGemm::template Run_2Lds<HasMainKBlockLoop, CGlobalMemoryDataOperation, TailNum>(
+        karg.p_a_grid, karg.p_b_grid, karg.p_c_grid, p_shared_0, p_shared_1, karg);
+#else
+    ignore = karg;
+#endif // end of if (defined(__gfx9__))
+}
+
+template <typename ALayout,
+          typename BLayout,
+          typename CLayout,
+          typename ADataType,
+          typename BDataType,
+          typename AccDataType,
+          typename CShuffleDataType,
+          typename CDataType,
+          typename AElementwiseOperation,
+          typename BElementwiseOperation,
+          typename CElementwiseOperation,
+          tensor_operation::device::GemmSpecialization GemmSpec,
+          index_t BlockSize,
+          index_t MPerBlock,
+          index_t NPerBlock,
+          index_t KPerBlock,
+          index_t AK1Value,
+          index_t BK1Value,
+          index_t MPerXdl,
+          index_t NPerXdl,
+          index_t MXdlPerWave,
+          index_t NXdlPerWave,
+          typename ABlockTransferThreadClusterLengths_AK0_M_AK1,
+          typename ABlockTransferThreadClusterArrangeOrder,
+          typename ABlockTransferSrcAccessOrder,
+          index_t ABlockTransferSrcVectorDim,
+          index_t ABlockTransferSrcScalarPerVector,
+          index_t ABlockTransferDstScalarPerVector_AK1,
+          bool AThreadTransferSrcResetCoordinateAfterRun,
+          index_t ABlockLdsExtraM,
+          typename BBlockTransferThreadClusterLengths_BK0_N_BK1,
+          typename BBlockTransferThreadClusterArrangeOrder,
+          typename BBlockTransferSrcAccessOrder,
+          index_t BBlockTransferSrcVectorDim,
+          index_t BBlockTransferSrcScalarPerVector,
+          index_t BBlockTransferDstScalarPerVector_BK1,
+          bool BThreadTransferSrcResetCoordinateAfterRun,
+          index_t BBlockLdsExtraN,
+          index_t CShuffleMXdlPerWavePerShuffle,
+          index_t CShuffleNXdlPerWavePerShuffle,
+          typename CShuffleBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
+          index_t CShuffleBlockTransferScalarPerVector_NPerBlock,
+          BlockGemmPipelineScheduler BlkGemmPipeSched = BlockGemmPipelineScheduler::Intrawave,
+          BlockGemmPipelineVersion BlkGemmPipelineVer = BlockGemmPipelineVersion::v4,
+          typename ComputeTypeA                       = CDataType,
+          typename ComputeTypeB                       = ComputeTypeA>
+struct GridwiseGemm_xdl_cshuffle_streamk_v3
+{
+    static constexpr auto I0 = Number<0>{};
+    static constexpr auto I1 = Number<1>{};
+    static constexpr auto I2 = Number<2>{};
+    static constexpr auto I3 = Number<3>{};
+    static constexpr auto I4 = Number<4>{};
+    static constexpr auto I5 = Number<5>{};
+    static constexpr auto I6 = Number<6>{};
+    static constexpr auto I7 = Number<7>{};
+
+    // K1 should be Number<...>
+    static constexpr auto AK0Number = Number<KPerBlock / AK1Value>{};
+    static constexpr auto BK0Number = Number<KPerBlock / BK1Value>{};
+    static constexpr auto AK1Number = Number<AK1Value>{};
+    static constexpr auto BK1Number = Number<BK1Value>{};
+
+    static constexpr index_t KPack =
+        math::max(math::lcm(AK1Number, BK1Number),
+                  MfmaSelector<ComputeTypeA, MPerXdl, NPerXdl>::selected_mfma.k_per_blk);
+
+    using ThisThreadBlock = ThisThreadBlock<BlockSize>;
+    __host__ static auto CalculateMPadded(index_t M)
+    {
+        return math::integer_least_multiple(M, MPerBlock);
+    }
+
+    __host__ static auto CalculateNPadded(index_t N)
+    {
+        return math::integer_least_multiple(N, NPerBlock);
+    }
+
+    __host__ static auto CalculateKPadded(index_t K)
+    {
+        return math::integer_divide_ceil(K, KPerBlock) * KPerBlock;
+    }
+
+    __host__ static auto CalculateAK0Padded(index_t K, index_t K_Batch = 1)
+    {
+        auto K_t = K_Batch * KPerBlock;
+        return (K + K_t - 1) / K_t * (KPerBlock / AK1Value);
+    }
+
+    __host__ static auto CalculateBK0Padded(index_t K, index_t K_Batch = 1)
+    {
+        auto K_t = K_Batch * KPerBlock;
+        return (K + K_t - 1) / K_t * (KPerBlock / BK1Value);
+    }
+
+    __host__ static auto CalculateKPadded(index_t K, index_t K_Batch = 1)
+    {
+        auto K_t = K_Batch * KPerBlock;
+        return (K + K_t - 1) / K_t * KPerBlock;
+    }
+
+    __host__ static auto CalculateKRead(index_t K, index_t K_Batch = 1)
+    {
+        constexpr auto KReadVec = math::lcm(AK1Number, BK1Number);
+        auto K_t                = K_Batch * KReadVec;
+        return (K + K_t - 1) / K_t * KReadVec;
+    }
+
+    __host__ static auto CalculateMBlock(index_t M)
+    {
+        return math::integer_divide_ceil(M, MPerBlock);
+    }
+
+    __host__ static auto CalculateNBlock(index_t N)
+    {
+        return math::integer_divide_ceil(N, NPerBlock);
+    }
+
+    template <index_t MNXdlPerWave, index_t MNWaves, index_t MNPerXdl, typename TileDesc_K0_MN_K1>
+    __host__ __device__ static constexpr auto MakeGemmMmaTileDescriptor(const TileDesc_K0_MN_K1&)
+    {
+        constexpr index_t K0 = TileDesc_K0_MN_K1{}.GetLength(Number<0>{});
+        constexpr index_t K1 = TileDesc_K0_MN_K1{}.GetLength(Number<2>{});
+
+        return transform_tensor_descriptor(
+            TileDesc_K0_MN_K1{},
+            make_tuple(make_merge_transform_v3_division_mod(make_tuple(Number<K0>{}, Number<K1>{})),
+                       make_unmerge_transform(make_tuple(
+                           Number<MNXdlPerWave>{}, Number<MNWaves>{}, Number<MNPerXdl>{}))),
+            make_tuple(Sequence<0, 2>{}, Sequence<1>{}),
+            make_tuple(Sequence<3>{}, Sequence<0, 1, 2>{}));
+    }
+
+    __device__ static auto MakeAGridDescriptor_AK0_M_AK1(
+        index_t M, index_t MPad, index_t K, index_t KPad, index_t StrideA, index_t AK0)
+    {
+        const auto a_grid_desc_mraw_kraw = [&]() {
+            if constexpr(is_same_v<tensor_layout::gemm::RowMajor, ALayout>)
+            {
+                return make_naive_tensor_descriptor(make_tuple(M, K), make_tuple(StrideA, I1));
+            }
+            else if constexpr(is_same_v<tensor_layout::gemm::ColumnMajor, ALayout>)
+            {
+                return make_naive_tensor_descriptor(make_tuple(M, K), make_tuple(I1, StrideA));
+            }
+        }();
+
+        using GemmSpecialization = tensor_operation::device::GemmSpecialization;
+
+        if constexpr(GemmSpec == GemmSpecialization::MKPadding ||
+                     GemmSpec == GemmSpecialization::MNKPadding)
+        {
+            // pad both M and K
+            const auto a_grid_desc_m_k =
+                transform_tensor_descriptor(a_grid_desc_mraw_kraw,
+                                            make_tuple(make_right_pad_transform(M, MPad - M),
+                                                       make_right_pad_transform(K, KPad - K)),
+                                            make_tuple(Sequence<0>{}, Sequence<1>{}),
+                                            make_tuple(Sequence<0>{}, Sequence<1>{}));
+
+            const auto a_grid_desc_ak0_m_ak1 = transform_tensor_descriptor(
+                a_grid_desc_m_k,
+                make_tuple(make_unmerge_transform(make_tuple(AK0, AK1Value)),
+                           make_pass_through_transform(MPad)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return a_grid_desc_ak0_m_ak1;
+        }
+        else if constexpr(GemmSpec == GemmSpecialization::MPadding ||
+                          GemmSpec == GemmSpecialization::MNPadding)
+        {
+            // pad M, but not K
+            const auto a_grid_desc_ak0_m_ak1 = transform_tensor_descriptor(
+                a_grid_desc_mraw_kraw,
+                make_tuple(make_unmerge_transform(make_tuple(AK0, AK1Value)),
+                           make_right_pad_transform(M, MPad - M)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return a_grid_desc_ak0_m_ak1;
+        }
+        else if constexpr(GemmSpec == GemmSpecialization::KPadding ||
+                          GemmSpec == GemmSpecialization::NKPadding)
+        {
+            // pad K, but not M
+            const auto a_grid_desc_m_k = transform_tensor_descriptor(
+                a_grid_desc_mraw_kraw,
+                make_tuple(make_pass_through_transform(M), make_right_pad_transform(K, KPad - K)),
+                make_tuple(Sequence<0>{}, Sequence<1>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}));
+
+            const auto a_grid_desc_ak0_m_ak1 = transform_tensor_descriptor(
+                a_grid_desc_m_k,
+                make_tuple(make_unmerge_transform(make_tuple(AK0, AK1Value)),
+                           make_pass_through_transform(M)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return a_grid_desc_ak0_m_ak1;
+        }
+        else
+        {
+            // not pad M or K
+            const auto a_grid_desc_ak0_m_ak1 = transform_tensor_descriptor(
+                a_grid_desc_mraw_kraw,
+                make_tuple(make_unmerge_transform(make_tuple(AK0, AK1Value)),
+                           make_pass_through_transform(M)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return a_grid_desc_ak0_m_ak1;
+        }
+    }
+
+    __device__ static auto MakeBGridDescriptor_BK0_N_BK1(
+        index_t K, index_t KPad, index_t N, index_t NPad, index_t StrideB, index_t BK0)
+    {
+        const auto b_grid_desc_nraw_kraw = [&]() {
+            if constexpr(is_same<tensor_layout::gemm::RowMajor, BLayout>::value)
+            {
+                return make_naive_tensor_descriptor(make_tuple(N, K), make_tuple(I1, StrideB));
+            }
+            else if constexpr(is_same<tensor_layout::gemm::ColumnMajor, BLayout>::value)
+            {
+                return make_naive_tensor_descriptor(make_tuple(N, K), make_tuple(StrideB, I1));
+            }
+        }();
+
+        using GemmSpecialization = tensor_operation::device::GemmSpecialization;
+
+        if constexpr(GemmSpec == GemmSpecialization::NKPadding ||
+                     GemmSpec == GemmSpecialization::MNKPadding)
+        {
+            // pad both N and K
+            const auto b_grid_desc_n_k =
+                transform_tensor_descriptor(b_grid_desc_nraw_kraw,
+                                            make_tuple(make_right_pad_transform(N, NPad - N),
+                                                       make_right_pad_transform(K, KPad - K)),
+                                            make_tuple(Sequence<0>{}, Sequence<1>{}),
+                                            make_tuple(Sequence<0>{}, Sequence<1>{}));
+
+            const auto b_grid_desc_bk0_n_bk1 = transform_tensor_descriptor(
+                b_grid_desc_n_k,
+                make_tuple(make_unmerge_transform(make_tuple(BK0, BK1Value)),
+                           make_pass_through_transform(NPad)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return b_grid_desc_bk0_n_bk1;
+        }
+        else if constexpr(GemmSpec == GemmSpecialization::NPadding ||
+                          GemmSpec == GemmSpecialization::MNPadding)
+        {
+            // pad N, but not K
+            const auto b_grid_desc_bk0_n_bk1 = transform_tensor_descriptor(
+                b_grid_desc_nraw_kraw,
+                make_tuple(make_unmerge_transform(make_tuple(BK0, BK1Value)),
+                           make_right_pad_transform(N, NPad - N)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return b_grid_desc_bk0_n_bk1;
+        }
+        else if constexpr(GemmSpec == GemmSpecialization::KPadding ||
+                          GemmSpec == GemmSpecialization::MKPadding)
+        {
+            // pad K, but not N
+            const auto b_grid_desc_n_k = transform_tensor_descriptor(
+                b_grid_desc_nraw_kraw,
+                make_tuple(make_pass_through_transform(N), make_right_pad_transform(K, KPad - K)),
+                make_tuple(Sequence<0>{}, Sequence<1>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}));
+
+            const auto b_grid_desc_bk0_n_bk1 = transform_tensor_descriptor(
+                b_grid_desc_n_k,
+                make_tuple(make_unmerge_transform(make_tuple(BK0, BK1Value)),
+                           make_pass_through_transform(N)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return b_grid_desc_bk0_n_bk1;
+        }
+        else
+        {
+            // not pad N or K
+            const auto b_grid_desc_bk0_n_bk1 = transform_tensor_descriptor(
+                b_grid_desc_nraw_kraw,
+                make_tuple(make_unmerge_transform(make_tuple(BK0, BK1Value)),
+                           make_pass_through_transform(N)),
+                make_tuple(Sequence<1>{}, Sequence<0>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
+
+            return b_grid_desc_bk0_n_bk1;
+        }
+    }
+
+    template <typename ABlockDesc_AK0_M_AK1>
+    __host__ __device__ static constexpr auto
+    MakeAMmaTileDescriptor_M0_M1_M2_K(const ABlockDesc_AK0_M_AK1&)
+    {
+        constexpr index_t MWaves = MPerBlock / (MXdlPerWave * MPerXdl);
+
+        return MakeGemmMmaTileDescriptor<MXdlPerWave, MWaves, MPerXdl>(ABlockDesc_AK0_M_AK1{});
+    }
+
+    template <typename BBlockDesc_BK0_N_BK1>
+    __host__ __device__ static constexpr auto
+    MakeBMmaTileDescriptor_N0_N1_N2_K(const BBlockDesc_BK0_N_BK1&)
+    {
+        constexpr index_t NWaves = NPerBlock / (NXdlPerWave * NPerXdl);
+
+        return MakeGemmMmaTileDescriptor<NXdlPerWave, NWaves, NPerXdl>(BBlockDesc_BK0_N_BK1{});
+    }
+
+    __host__ __device__ static auto
+    MakeCGridDescriptor_M_N(index_t M, index_t MPad, index_t N, index_t NPad, index_t StrideC)
+    {
+        const auto c_grid_desc_mraw_nraw = [&]() {
+            if constexpr(is_same<tensor_layout::gemm::RowMajor, CLayout>::value)
+            {
+                return make_naive_tensor_descriptor(make_tuple(M, N), make_tuple(StrideC, I1));
+            }
+            else if constexpr(is_same<tensor_layout::gemm::ColumnMajor, CLayout>::value)
+            {
+                return make_naive_tensor_descriptor(make_tuple(M, N), make_tuple(I1, StrideC));
+            }
+        }();
+
+        using GemmSpecialization = tensor_operation::device::GemmSpecialization;
+
+        if constexpr(GemmSpec == GemmSpecialization::MNPadding ||
+                     GemmSpec == GemmSpecialization::MNKPadding)
+        {
+            // pad M and N
+            return transform_tensor_descriptor(c_grid_desc_mraw_nraw,
+                                               make_tuple(make_right_pad_transform(M, MPad - M),
+                                                          make_right_pad_transform(N, NPad - N)),
+                                               make_tuple(Sequence<0>{}, Sequence<1>{}),
+                                               make_tuple(Sequence<0>{}, Sequence<1>{}));
+        }
+        else if constexpr(GemmSpec == GemmSpecialization::MPadding ||
+                          GemmSpec == GemmSpecialization::MKPadding)
+        {
+            // pad M, but not N
+            return transform_tensor_descriptor(
+                c_grid_desc_mraw_nraw,
+                make_tuple(make_right_pad_transform(M, MPad - M), make_pass_through_transform(N)),
+                make_tuple(Sequence<0>{}, Sequence<1>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}));
+        }
+        else if constexpr(GemmSpec == GemmSpecialization::NPadding ||
+                          GemmSpec == GemmSpecialization::NKPadding)
+        {
+            // pad N, but not M
+            return transform_tensor_descriptor(
+                c_grid_desc_mraw_nraw,
+                make_tuple(make_pass_through_transform(M), make_right_pad_transform(N, NPad - N)),
+                make_tuple(Sequence<0>{}, Sequence<1>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}));
+        }
+        else
+        {
+            // not pad M or N
+            return c_grid_desc_mraw_nraw;
+        }
+    }
+
+    struct Problem
+    {
+        __host__ Problem(index_t M_,
+                         index_t N_,
+                         index_t K_,
+                         index_t StrideA_,
+                         index_t StrideB_,
+                         index_t StrideC_,
+                         index_t Streamk_sel_,
+                         index_t Grid_size_)
+            : M{M_},
+              N{N_},
+              K{K_},
+              StrideA{StrideA_},
+              StrideB{StrideB_},
+              StrideC{StrideC_},
+              Streamk_sel{Streamk_sel_},
+              Grid_size{Grid_size_},
+              MPadded{CalculateMPadded(M_)},
+              NPadded{CalculateNPadded(N_)},
+              KRead{CalculateKRead(K_, 1)},
+              KPadded{CalculateKPadded(K_, 1)},
+              AK0{CalculateAK0Padded(K_, 1)},
+              BK0{CalculateBK0Padded(K_, 1)},
+              MBlock{CalculateMBlock(M_)},
+              NBlock{CalculateNBlock(N_)}
+
+        {
+        }
+
+        __host__ void Print() const
+        {
+            std::cout << "problem {"
+                      << "M:" << M << ", "
+                      << "N:" << N << ", "
+                      << "K:" << K << ", "
+                      << "SA:" << StrideA << ", "
+                      << "SB:" << StrideB << ", "
+                      << "SC:" << StrideC << ", "
+                      << "MP:" << MPadded << ", "
+                      << "NP:" << NPadded << ", "
+                      << "KRead:" << KRead << ", "
+                      << "KP:" << KPadded << ", "
+                      << "AK0:" << AK0 << ", "
+                      << "BK0:" << BK0 << ", "
+                      << "MBlock: " << MBlock << ", "
+                      << "NBlock: " << NBlock << ", Stream-K Selection:" << Streamk_sel
+                      << ", Grid size:" << Grid_size << "}" << std::endl;
+        }
+
+        index_t M;
+        index_t N;
+        index_t K;
+        index_t StrideA;
+        index_t StrideB;
+        index_t StrideC;
+        index_t Streamk_sel;
+        mutable index_t Grid_size;
+        index_t MPadded;
+        index_t NPadded;
+        index_t KRead;
+        index_t KPadded;
+        index_t AK0;
+        index_t BK0;
+        index_t MBlock;
+        index_t NBlock;
+    };
+
+    // Argument
+    struct Argument : public tensor_operation::device::BaseArgument, public Problem
+    {
+        __host__ Argument(const ADataType* p_a_grid_,
+                          const BDataType* p_b_grid_,
+                          CDataType* p_c_grid_,
+                          index_t M_,
+                          index_t N_,
+                          index_t K_,
+                          index_t StrideA_,
+                          index_t StrideB_,
+                          index_t StrideC_,
+                          index_t Streamk_sel_,
+                          index_t Grid_size_)
+            : Problem{M_, N_, K_, StrideA_, StrideB_, StrideC_, Streamk_sel_, Grid_size_},
+              p_a_grid{p_a_grid_},
+              p_b_grid{p_b_grid_},
+              p_c_grid{p_c_grid_}
+
+        {
+        }
+
+        const ADataType* p_a_grid;
+        const BDataType* p_b_grid;
+        CDataType* p_c_grid;
+    };
+
+    struct SplitKBatchOffset
+    {
+        __device__ SplitKBatchOffset(Problem& problem, unsigned int kbatch_id, unsigned int orig_K)
+        {
+            if constexpr(is_same_v<tensor_layout::gemm::RowMajor, ALayout>)
+            {
+                a_k_split_offset = kbatch_id * problem.KRead;
+            }
+            else if constexpr(is_same_v<tensor_layout::gemm::ColumnMajor, ALayout>)
+            {
+                a_k_split_offset = kbatch_id * problem.KRead * problem.M;
+            }
+
+            if constexpr(is_same_v<tensor_layout::gemm::RowMajor, BLayout>)
+            {
+                b_k_split_offset = kbatch_id * problem.KRead * problem.N;
+            }
+            else if constexpr(is_same_v<tensor_layout::gemm::ColumnMajor, BLayout>)
+            {
+                b_k_split_offset = kbatch_id * problem.KRead;
+            }
+
+            if(kbatch_id < static_cast<uint32_t>(problem.KBatch - 1))
+            {
+                problem.K = problem.KRead;
+            }
+            else
+            {
+                problem.K = orig_K - problem.KRead * (problem.KBatch - 1);
+            }
+        }
+
+        index_t a_k_split_offset;
+        index_t b_k_split_offset;
+    };
+
+    __device__ static constexpr auto GetABlockDescriptor_AK0PerBlock_MPerBlock_AK1()
+    {
+        // A matrix in LDS memory, dst of blockwise copy
+        if constexpr(ABlockLdsExtraM)
+        {
+            return make_naive_tensor_descriptor(
+                make_tuple(AK0Number, Number<MPerBlock>{}, AK1Number),
+                make_tuple(AK1Number, Number<KPerBlock + ABlockLdsExtraM>{}, I1));
+        }
+        // xor tensor transformation request more unnecessary vgpr usage, would cause register spill
+        // in some cases.
+        else if constexpr(is_same<tensor_layout::gemm::RowMajor, ALayout>::value)
+        {
+            constexpr auto MLdsLayer        = 32 * 4 / KPerBlock / sizeof(ADataType) < 1
+                                                  ? 1
+                                                  : 32 * 4 / KPerBlock / sizeof(ADataType);
+            constexpr auto a_lds_block_desc = make_naive_tensor_descriptor(
+                make_tuple(
+                    AK0Number * Number<MLdsLayer>{}, Number<MPerBlock / MLdsLayer>{}, AK1Number),
+                make_tuple(AK1Number, Number<KPerBlock * MLdsLayer>{}, I1));
+
+            constexpr auto a_lds_block_desc_permuted = transform_tensor_descriptor(
+                a_lds_block_desc,
+                make_tuple(make_xor_with_modulo_transform(make_tuple(
+                               Number<MPerBlock / MLdsLayer>{}, Number<AK0Number * MLdsLayer>{})),
+                           make_pass_through_transform(AK1Number)),
+                make_tuple(Sequence<1, 0>{}, Sequence<2>{}),
+                make_tuple(Sequence<1, 0>{}, Sequence<2>{}));
+
+            constexpr auto a_lds_block_desc_ak0_mldslayer_m_ak1 = transform_tensor_descriptor(
+                a_lds_block_desc_permuted,
+                make_tuple(make_unmerge_transform(make_tuple(AK0Number, Number<MLdsLayer>{})),
+                           make_pass_through_transform(Number<MPerBlock / MLdsLayer>{}),
+                           make_pass_through_transform(AK1Number)),
+                make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}, Sequence<3>{}));
+
+            constexpr auto a_lds_block_desc_ak0_m_ak1 = transform_tensor_descriptor(
+                a_lds_block_desc_ak0_mldslayer_m_ak1,
+                make_tuple(make_pass_through_transform(AK0Number),
+                           make_merge_transform_v3_division_mod(
+                               make_tuple(Number<MPerBlock / MLdsLayer>{}, Number<MLdsLayer>{})),
+                           make_pass_through_transform(AK1Number)),
+                make_tuple(Sequence<0>{}, Sequence<1, 2>{}, Sequence<3>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}));
+
+            return a_lds_block_desc_ak0_m_ak1;
+        }
+        else // ColumnMajor A
+        {
+            // kfold and mpair dimension is not always required.
+            // more dimension in merge_transform increase the difficulty of generating immarg offset
+            // for compiler.
+            constexpr auto M0 = ABlockTransferThreadClusterLengths_AK0_M_AK1{}.At(I1);
+            constexpr auto M1 = MPerBlock / M0;
+
+            constexpr auto KThreadWrite     = ABlockTransferThreadClusterLengths_AK0_M_AK1{}.At(I0);
+            constexpr auto K0PerThreadWrite = AK0Number / KThreadWrite;
+            constexpr auto KThreadRead      = 64 / MPerXdl;
+            constexpr auto K0PerThreadRead  = AK0Number / KThreadRead;
+
+            constexpr auto kfold = (AK1Number * M0 * sizeof(ADataType) > 128)
+                                       ? 1
+                                       : 128 / (AK1Number * M0 * sizeof(ADataType));
+            constexpr auto KThreadReadPerm =
+                (kfold * K0PerThreadWrite / K0PerThreadRead) > 1
+                    ? KThreadRead / (kfold * K0PerThreadWrite / K0PerThreadRead)
+                    : KThreadRead;
+
+            // 1<=mpair<=n0
+            constexpr auto mpair = (AK1Number * MPerXdl * sizeof(ADataType) > 128)
+                                       ? 1
+                                       : ((128 / (AK1Number * MPerXdl * sizeof(ADataType))) > M0
+                                              ? M0
+                                              : 128 / (AK1Number * MPerXdl * sizeof(ADataType)));
+
+            constexpr auto a_lds_block_desc = make_naive_tensor_descriptor_packed(
+                make_tuple(Number<KThreadWrite / kfold / KThreadReadPerm>{},
+                           Number<K0PerThreadWrite>{},
+                           Number<KThreadReadPerm * M1>{},
+                           Number<kfold * M0 / mpair>{},
+                           Number<mpair>{},
+                           AK1Number));
+
+            constexpr auto a_lds_block_desc_permuted = transform_tensor_descriptor(
+                a_lds_block_desc,
+                make_tuple(
+                    make_pass_through_transform(Number<KThreadWrite / kfold / KThreadReadPerm>{}),
+                    make_pass_through_transform(Number<K0PerThreadWrite>{}),
+                    make_xor_with_modulo_transform(
+                        make_tuple(Number<KThreadReadPerm * M1>{}, Number<kfold * M0 / mpair>{})),
+                    make_pass_through_transform(Number<mpair>{}),
+                    make_pass_through_transform(AK1Number)),
+                make_tuple(
+                    Sequence<0>{}, Sequence<1>{}, Sequence<2, 3>{}, Sequence<4>{}, Sequence<5>{}),
+                make_tuple(
+                    Sequence<0>{}, Sequence<1>{}, Sequence<2, 3>{}, Sequence<4>{}, Sequence<5>{}));
+
+            constexpr auto a_lds_block_desc_unmerged = transform_tensor_descriptor(
+                a_lds_block_desc_permuted,
+                make_tuple(
+                    make_pass_through_transform(Number<KThreadWrite / kfold / KThreadReadPerm>{}),
+                    make_pass_through_transform(Number<K0PerThreadWrite>{}),
+                    make_unmerge_transform(make_tuple(Number<KThreadReadPerm>{}, Number<M1>{})),
+                    make_unmerge_transform(make_tuple(Number<kfold>{}, Number<M0 / mpair>{})),
+                    make_pass_through_transform(Number<mpair>{}),
+                    make_pass_through_transform(AK1Number)),
+                make_tuple(Sequence<0>{},
+                           Sequence<1>{},
+                           Sequence<2>{},
+                           Sequence<3>{},
+                           Sequence<4>{},
+                           Sequence<5>{}),
+                make_tuple(Sequence<1>{},
+                           Sequence<2>{},
+                           Sequence<0, 3>{},
+                           Sequence<4, 5>{},
+                           Sequence<6>{},
+                           Sequence<7>{}));
+
+            constexpr auto a_lds_block_desc_ak0_m_ak1 = transform_tensor_descriptor(
+                a_lds_block_desc_unmerged,
+                make_tuple(make_merge_transform_v3_division_mod(
+                               make_tuple(Number<KThreadReadPerm>{},
+                                          Number<KThreadWrite / kfold / KThreadReadPerm>{},
+                                          Number<kfold>{},
+                                          Number<K0PerThreadWrite>{})),
+                           make_merge_transform_v3_division_mod(
+                               make_tuple(Number<M0 / mpair>{}, Number<mpair>{}, Number<M1>{})),
+                           make_pass_through_transform(AK1Number)),
+                make_tuple(Sequence<0, 1, 4, 2>{}, Sequence<5, 6, 3>{}, Sequence<7>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}));
+
+            return a_lds_block_desc_ak0_m_ak1;
+        }
+    }
+
+    __device__ static constexpr auto GetBBlockDescriptor_BK0PerBlock_NPerBlock_BK1()
+    {
+        // B matrix in LDS memory, dst of blockwise copy
+        if constexpr(BBlockLdsExtraN)
+        {
+            return make_naive_tensor_descriptor(
+                make_tuple(BK0Number, Number<NPerBlock>{}, BK1Number),
+                make_tuple(BK1Number, Number<KPerBlock + BBlockLdsExtraN>{}, I1));
+        }
+        else if constexpr(is_same<tensor_layout::gemm::ColumnMajor, BLayout>::value)
+        {
+            // NLdsLayer * K0 as logical Bank
+            constexpr auto NLdsLayer = 32 * 4 / KPerBlock / sizeof(BDataType) < 1
+                                           ? 1
+                                           : 32 * 4 / KPerBlock / sizeof(BDataType);
+            ;
+            constexpr auto b_lds_block_desc = make_naive_tensor_descriptor(
+                make_tuple(
+                    BK0Number * Number<NLdsLayer>{}, Number<NPerBlock / NLdsLayer>{}, BK1Number),
+                make_tuple(BK1Number, Number<KPerBlock * NLdsLayer>{}, I1));
+
+            constexpr auto b_lds_block_desc_permuted = transform_tensor_descriptor(
+                b_lds_block_desc,
+                make_tuple(make_xor_with_modulo_transform(make_tuple(
+                               Number<NPerBlock / NLdsLayer>{}, Number<BK0Number * NLdsLayer>{})),
+                           make_pass_through_transform(BK1Number)),
+                make_tuple(Sequence<1, 0>{}, Sequence<2>{}),
+                make_tuple(Sequence<1, 0>{}, Sequence<2>{}));
+
+            constexpr auto b_lds_block_desc_bk0_nldslayer_n_bk1 = transform_tensor_descriptor(
+                b_lds_block_desc_permuted,
+                make_tuple(make_unmerge_transform(make_tuple(BK0Number, Number<NLdsLayer>{})),
+                           make_pass_through_transform(Number<NPerBlock / NLdsLayer>{}),
+                           make_pass_through_transform(BK1Number)),
+                make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}),
+                make_tuple(Sequence<0, 2>{}, Sequence<1>{}, Sequence<3>{}));
+
+            constexpr auto b_lds_block_desc_bk0_n_bk1 = transform_tensor_descriptor(
+                b_lds_block_desc_bk0_nldslayer_n_bk1,
+                make_tuple(make_pass_through_transform(BK0Number),
+                           make_merge_transform_v3_division_mod(
+                               make_tuple(Number<NPerBlock / NLdsLayer>{}, Number<NLdsLayer>{})),
+                           make_pass_through_transform(BK1Number)),
+                make_tuple(Sequence<0>{}, Sequence<1, 2>{}, Sequence<3>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}));
+
+            return b_lds_block_desc_bk0_n_bk1;
+        }
+        else // RowMajor B
+        {
+            constexpr auto N0 = BBlockTransferThreadClusterLengths_BK0_N_BK1{}.At(I1);
+            constexpr auto N1 = NPerBlock / N0;
+
+            constexpr auto KThreadWrite     = BBlockTransferThreadClusterLengths_BK0_N_BK1{}.At(I0);
+            constexpr auto K0PerThreadWrite = BK0Number / KThreadWrite;
+            constexpr auto KThreadRead      = 64 / NPerXdl;
+            constexpr auto K0PerThreadRead  = BK0Number / KThreadRead;
+
+            constexpr auto kfold = (BK1Number * N0 * sizeof(BDataType) > 128)
+                                       ? 1
+                                       : 128 / (BK1Number * N0 * sizeof(BDataType));
+            constexpr auto KThreadReadPerm =
+                (kfold * K0PerThreadWrite / K0PerThreadRead) > 1
+                    ? KThreadRead / (kfold * K0PerThreadWrite / K0PerThreadRead)
+                    : KThreadRead;
+
+            // 1<=npair<=n0
+            constexpr auto npair = (BK1Number * NPerXdl * sizeof(BDataType) > 128)
+                                       ? 1
+                                       : ((128 / (BK1Number * NPerXdl * sizeof(BDataType))) > N0
+                                              ? N0
+                                              : 128 / (BK1Number * NPerXdl * sizeof(BDataType)));
+
+            constexpr auto b_lds_block_desc = make_naive_tensor_descriptor_packed(
+                make_tuple(Number<KThreadWrite / kfold / KThreadReadPerm>{},
+                           Number<K0PerThreadWrite>{},
+                           Number<KThreadReadPerm * N1>{},
+                           Number<kfold * N0 / npair>{},
+                           Number<npair>{},
+                           BK1Number));
+
+            constexpr auto b_lds_block_desc_permuted = transform_tensor_descriptor(
+                b_lds_block_desc,
+                make_tuple(
+                    make_pass_through_transform(Number<KThreadWrite / kfold / KThreadReadPerm>{}),
+                    make_pass_through_transform(Number<K0PerThreadWrite>{}),
+                    make_xor_with_modulo_transform(
+                        make_tuple(Number<KThreadReadPerm * N1>{}, Number<kfold * N0 / npair>{})),
+                    make_pass_through_transform(Number<npair>{}),
+                    make_pass_through_transform(BK1Number)),
+                make_tuple(
+                    Sequence<0>{}, Sequence<1>{}, Sequence<2, 3>{}, Sequence<4>{}, Sequence<5>{}),
+                make_tuple(
+                    Sequence<0>{}, Sequence<1>{}, Sequence<2, 3>{}, Sequence<4>{}, Sequence<5>{}));
+
+            constexpr auto b_lds_block_desc_unmerged = transform_tensor_descriptor(
+                b_lds_block_desc_permuted,
+                make_tuple(
+                    make_pass_through_transform(Number<KThreadWrite / kfold / KThreadReadPerm>{}),
+                    make_pass_through_transform(Number<K0PerThreadWrite>{}),
+                    make_unmerge_transform(make_tuple(Number<KThreadReadPerm>{}, Number<N1>{})),
+                    make_unmerge_transform(make_tuple(Number<kfold>{}, Number<N0 / npair>{})),
+                    make_pass_through_transform(Number<npair>{}),
+                    make_pass_through_transform(BK1Number)),
+                make_tuple(Sequence<0>{},
+                           Sequence<1>{},
+                           Sequence<2>{},
+                           Sequence<3>{},
+                           Sequence<4>{},
+                           Sequence<5>{}),
+                make_tuple(Sequence<1>{},
+                           Sequence<2>{},
+                           Sequence<0, 3>{},
+                           Sequence<4, 5>{},
+                           Sequence<6>{},
+                           Sequence<7>{}));
+
+            constexpr auto b_lds_block_desc_bk0_n_bk1 = transform_tensor_descriptor(
+                b_lds_block_desc_unmerged,
+                make_tuple(make_merge_transform_v3_division_mod(
+                               make_tuple(Number<KThreadReadPerm>{},
+                                          Number<KThreadWrite / kfold / KThreadReadPerm>{},
+                                          Number<kfold>{},
+                                          Number<K0PerThreadWrite>{})),
+                           make_merge_transform_v3_division_mod(
+                               make_tuple(Number<N0 / npair>{}, Number<npair>{}, Number<N1>{})),
+                           make_pass_through_transform(BK1Number)),
+                make_tuple(Sequence<0, 1, 4, 2>{}, Sequence<5, 6, 3>{}, Sequence<7>{}),
+                make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}));
+
+            return b_lds_block_desc_bk0_n_bk1;
+        }
+    }
+
+    __device__ static constexpr auto GetCShuffleBlockDescriptor_MBlock_MPerBlock_NBlock_NPerBlock()
+    {
+        constexpr index_t MWave = MPerBlock / (MXdlPerWave * MPerXdl);
+        constexpr index_t NWave = NPerBlock / (NXdlPerWave * NPerXdl);
+
+        constexpr auto c_shuffle_block_desc_mblock_mperblock_nblock_nperblock =
+            make_naive_tensor_descriptor_packed(
+                make_tuple(I1,
+                           Number<CShuffleMXdlPerWavePerShuffle * MWave * MPerXdl>{},
+                           I1,
+                           Number<CShuffleNXdlPerWavePerShuffle * NWave * NPerXdl>{}));
+
+        return c_shuffle_block_desc_mblock_mperblock_nblock_nperblock;
+    }
+
+    using BlockwiseGemmPipe =
+        remove_cvref_t<decltype(BlockGemmPipeline_Selector<
+                                BlkGemmPipelineVer,
+                                BlkGemmPipeSched,
+                                BlockSize,
+                                ADataType,
+                                BDataType,
+                                ComputeTypeA,
+                                AccDataType,
+                                decltype(GetABlockDescriptor_AK0PerBlock_MPerBlock_AK1()),
+                                decltype(GetBBlockDescriptor_BK0PerBlock_NPerBlock_BK1()),
+                                decltype(MakeAMmaTileDescriptor_M0_M1_M2_K(
+                                    GetABlockDescriptor_AK0PerBlock_MPerBlock_AK1())),
+                                decltype(MakeBMmaTileDescriptor_N0_N1_N2_K(
+                                    GetBBlockDescriptor_BK0PerBlock_NPerBlock_BK1())),
+                                ABlockTransferSrcScalarPerVector,
+                                BBlockTransferSrcScalarPerVector,
+                                MPerBlock,
+                                NPerBlock,
+                                KPerBlock,
+                                MPerXdl,
+                                NPerXdl,
+                                MXdlPerWave,
+                                NXdlPerWave,
+                                KPack>())>;
+
+    __device__ static constexpr index_t GetSharedMemoryNumberOfByte()
+    {
+        // LDS allocation for A and B: be careful of alignment
+        constexpr auto a_block_desc_ak0_m_ak1 = GetABlockDescriptor_AK0PerBlock_MPerBlock_AK1();
+        constexpr auto b_block_desc_bk0_n_bk1 = GetBBlockDescriptor_BK0PerBlock_NPerBlock_BK1();
+
+        // lds max alignment
+        constexpr auto max_lds_align = math::lcm(AK1Number, BK1Number);
+
+        constexpr auto a_block_space_size_aligned = math::integer_least_multiple(
+            a_block_desc_ak0_m_ak1.GetElementSpaceSize(), max_lds_align);
+
+        constexpr auto b_block_space_size_aligned = math::integer_least_multiple(
+            b_block_desc_bk0_n_bk1.GetElementSpaceSize(), max_lds_align);
+
+        // LDS allocation for C shuffle in LDS
+        constexpr auto c_shuffle_block_desc_mblock_mperblock_nblock_nperblock =
+            GetCShuffleBlockDescriptor_MBlock_MPerBlock_NBlock_NPerBlock();
+
+        constexpr auto c_block_size =
+            c_shuffle_block_desc_mblock_mperblock_nblock_nperblock.GetElementSpaceSize();
+
+        return math::max((a_block_space_size_aligned * sizeof(ADataType) +
+                          b_block_space_size_aligned * sizeof(BDataType)),
+                         c_block_size * sizeof(CShuffleDataType));
+    }
+
+    // block_id to matrix tile idx (m0, n0) mapping are controlled by {M01, N01}
+    __host__ static constexpr bool CheckValidity(const Argument& karg)
+    {
+        static_assert((MPerBlock % (MPerXdl * MXdlPerWave) == 0) &&
+                          (NPerBlock % (NXdlPerWave * NPerXdl)) == 0,
+                      "Invalid tuning param!");
+
+        if constexpr(!(GemmSpec == tensor_operation::device::GemmSpecialization::MPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::MNPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::MKPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::MNKPadding))
+        {
+            if(!(karg.M % MPerBlock == 0))
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg M value is not a multiple of MPerBlock! M: " << karg.M << " "
+                              << __FILE__ << ":" << __LINE__ << ", in function: " << __func__
+                              << std::endl;
+                }
+                return false;
+            }
+        }
+
+        if constexpr(!(GemmSpec == tensor_operation::device::GemmSpecialization::NPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::MNPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::NKPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::MNKPadding))
+        {
+            if(!(karg.N % NPerBlock == 0))
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg N value is not a multiple of NPerBlock! N: " << karg.N << " "
+                              << __FILE__ << ":" << __LINE__ << ", in function: " << __func__
+                              << std::endl;
+                }
+                return false;
+            }
+        }
+
+        if constexpr(!(GemmSpec == tensor_operation::device::GemmSpecialization::KPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::MKPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::NKPadding ||
+                       GemmSpec == tensor_operation::device::GemmSpecialization::MNKPadding))
+        {
+
+            auto K_t = KPerBlock;
+            if(!(karg.K % K_t == 0))
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg K value is not a multiple of K_Batch * K0PerBlock * K1! K: "
+                              << karg.K << " " << __FILE__ << ":" << __LINE__
+                              << ", in function: " << __func__ << std::endl;
+                }
+                return false;
+            }
+        }
+        else
+        {
+
+            if(karg.K <= 0)
+            {
+                return false;
+            }
+        }
+
+        if constexpr(is_same<tensor_layout::gemm::RowMajor, ALayout>::value)
+        {
+            if(karg.K % ABlockTransferSrcScalarPerVector != 0)
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg K (" << karg.K
+                              << ") value is not a multiple of ABlockTransferSrcScalarPerVector ("
+                              << ABlockTransferSrcScalarPerVector << " )! " << __FILE__ << ":"
+                              << __LINE__ << ", in function: " << __func__ << std::endl;
+                }
+                return false;
+            }
+        }
+        else
+        {
+            if(karg.M % ABlockTransferSrcScalarPerVector != 0)
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg M (" << karg.M
+                              << ") value is not a multiple of ABlockTransferSrcScalarPerVector ("
+                              << ABlockTransferSrcScalarPerVector << " )! " << __FILE__ << ":"
+                              << __LINE__ << ", in function: " << __func__ << std::endl;
+                }
+                return false;
+            }
+        }
+
+        if constexpr(is_same<tensor_layout::gemm::RowMajor, BLayout>::value)
+        {
+            if(karg.N % BBlockTransferSrcScalarPerVector != 0)
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg N (" << karg.N
+                              << ") value is not a multiple of BBlockTransferSrcScalarPerVector ("
+                              << BBlockTransferSrcScalarPerVector << " )! " << __FILE__ << ":"
+                              << __LINE__ << ", in function: " << __func__ << std::endl;
+                }
+                return false;
+            }
+        }
+        else
+        {
+            if(karg.K % BBlockTransferSrcScalarPerVector != 0)
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg K (" << karg.K
+                              << ") value is not a multiple of BBlockTransferSrcScalarPerVector ("
+                              << BBlockTransferSrcScalarPerVector << " )! " << __FILE__ << ":"
+                              << __LINE__ << ", in function: " << __func__ << std::endl;
+                }
+                return false;
+            }
+        }
+
+        if constexpr(is_same<tensor_layout::gemm::RowMajor, CLayout>::value)
+        {
+            if(karg.N % CShuffleBlockTransferScalarPerVector_NPerBlock != 0)
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg N (" << karg.N
+                              << ") value is not a multiple of "
+                                 "CShuffleBlockTransferScalarPerVector_NPerBlock ("
+                              << CShuffleBlockTransferScalarPerVector_NPerBlock << " )! "
+                              << __FILE__ << ":" << __LINE__ << ", in function: " << __func__
+                              << std::endl;
+                }
+                return false;
+            }
+        }
+        else
+        {
+            if(karg.M % CShuffleBlockTransferScalarPerVector_NPerBlock != 0)
+            {
+                if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+                {
+                    std::cout << "Arg M (" << karg.M
+                              << ") value is not a multiple of "
+                                 "CShuffleBlockTransferScalarPerVector_NPerBlock ("
+                              << CShuffleBlockTransferScalarPerVector_NPerBlock << " )! "
+                              << __FILE__ << ":" << __LINE__ << ", in function: " << __func__
+                              << std::endl;
+                }
+                return false;
+            }
+        }
+
+        if constexpr(is_same<remove_cvref_t<CDataType>, bhalf_t>::value)
+        {
+            if(ck::EnvIsEnabled(CK_ENV(CK_LOGGING)))
+            {
+                std::cout << " Grid size: " << karg.Grid_size << " > 1 is not support yet"
+                          << __FILE__ << ":" << __LINE__ << ", in function: " << __func__
+                          << std::endl;
+            }
+        }
+
+        // check gridwise gemm pipeline
+        const auto num_k_loop = karg.AK0 / (KPerBlock / AK1Value);
+
+        if constexpr(BlkGemmPipelineVer != BlockGemmPipelineVersion::v1)
+        {
+            if(num_k_loop <= BlockwiseGemmPipe::PrefetchStages)
+            {
+                return false;
+            }
+        }
+
+        // TODO: also check validity of all components (blockwise-copy, threadwise-copy, etc)
+        return true;
+    }
+
+    __host__ static constexpr bool CalculateHasMainKBlockLoop(index_t K)
+    {
+        const index_t num_loop = K / KPerBlock;
+
+        return BlockwiseGemmPipe::BlockHasHotloop(num_loop);
+    }
+
+    __host__ static constexpr TailNumber CalculateKBlockLoopTailNum(index_t K)
+    {
+        const index_t num_loop = K / KPerBlock;
+
+        return BlockwiseGemmPipe::BlockLoopTailNum(num_loop);
+    }
+
+    template <typename CGridDesc>
+    __device__ static constexpr auto MakeCGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
+        const CGridDesc& c_grid_desc_m_n, index_t MBlock, index_t NBlock)
+    {
+        const auto c_grid_desc_mblock_mperblock_nblock_nperblock = transform_tensor_descriptor(
+            c_grid_desc_m_n,
+            make_tuple(make_unmerge_transform(make_tuple(MBlock, Number<MPerBlock>{})),
+                       make_unmerge_transform(make_tuple(NBlock, Number<NPerBlock>{}))),
+            make_tuple(Sequence<0>{}, Sequence<1>{}),
+            make_tuple(Sequence<0, 1>{}, Sequence<2, 3>{}));
+
+        return c_grid_desc_mblock_mperblock_nblock_nperblock;
+    }
+
+    using Block2CTileMap_streamk = BlockToCTileMap_GemmStreamK_v2<MPerBlock,
+                                                                  NPerBlock,
+                                                                  KPerBlock,
+                                                                  StreamKReductionStrategy::Atomic,
+                                                                  8,
+                                                                  4>;
+
+    template <bool HasMainKBlockLoop,
+              InMemoryDataOperationEnum CGlobalMemoryDataOperation,
+              TailNumber TailNum = TailNumber::Odd>
+    __device__ static void Run(const ADataType* p_a_grid,
+                               const BDataType* p_b_grid,
+                               CDataType* p_c_grid,
+                               void* p_shared,
+                               Problem& problem)
+    {
+
+        const AElementwiseOperation a_element_op{};
+        const BElementwiseOperation b_element_op{};
+        const CElementwiseOperation c_element_op{};
+
+        Block2CTileMap_streamk block_2_ctile_map_streamk(problem.M,
+                                                         problem.N,
+                                                         AK0Number * problem.KPadded,
+                                                         problem.Grid_size,
+                                                         problem.Streamk_sel);
+        uint32_t iter_start, iter_end;
+        bool is_sk_block, is_dp_block;
+        index_t num_k_block_main_loop;
+
+        for(auto block_idx = get_block_1d_id();
+            block_idx < block_2_ctile_map_streamk.get_grid_dims();
+            block_idx += gridDim.x)
+        {
+
+            is_sk_block =
+                static_cast<uint32_t>(block_idx) < block_2_ctile_map_streamk.sk_num_blocks;
+            is_dp_block =
+                static_cast<uint32_t>(block_idx) >= block_2_ctile_map_streamk.dp_start_block_idx &&
+                static_cast<uint32_t>(block_idx) <
+                    block_2_ctile_map_streamk.reduction_start_block_idx;
+
+            block_2_ctile_map_streamk.get_block_itr(block_idx, iter_start, iter_end);
+            num_k_block_main_loop = iter_end - iter_start;
+
+            while(true)
+            {
+                uint32_t current_iter_length = __builtin_amdgcn_readfirstlane(
+                    block_2_ctile_map_streamk.get_current_iter_length(
+                        iter_start, iter_end, num_k_block_main_loop));
+                uint32_t tile_idx, iter_offset;
+                block_2_ctile_map_streamk.get_tile_idx_with_offset(
+                    iter_end - 1, tile_idx, iter_offset);
+                iter_offset = __builtin_amdgcn_readfirstlane(iter_offset - current_iter_length + 1);
+
+                const auto a_grid_desc_ak0_m_ak1 = MakeAGridDescriptor_AK0_M_AK1(problem.M,
+                                                                                 problem.MPadded,
+                                                                                 problem.K,
+                                                                                 problem.KPadded,
+                                                                                 problem.StrideA,
+                                                                                 problem.AK0);
+                const auto b_grid_desc_bk0_n_bk1 = MakeBGridDescriptor_BK0_N_BK1(problem.K,
+                                                                                 problem.KPadded,
+                                                                                 problem.N,
+                                                                                 problem.NPadded,
+                                                                                 problem.StrideB,
+                                                                                 problem.BK0);
+                const auto c_grid_desc_m_n       = MakeCGridDescriptor_M_N(
+                    problem.M, problem.MPadded, problem.N, problem.NPadded, problem.StrideC);
+
+                const auto c_grid_desc_mblock_mperblock_nblock_nperblock =
+                    MakeCGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
+                        c_grid_desc_m_n, problem.MBlock, problem.NBlock);
+                auto c_grid_buf = make_dynamic_buffer<AddressSpaceEnum::Global>(
+                    p_c_grid, c_grid_desc_mblock_mperblock_nblock_nperblock.GetElementSpaceSize());
+
+                const auto a_grid_buf = make_dynamic_buffer<AddressSpaceEnum::Global>(
+                    p_a_grid, a_grid_desc_ak0_m_ak1.GetElementSpaceSize());
+
+                const auto b_grid_buf = make_dynamic_buffer<AddressSpaceEnum::Global>(
+                    p_b_grid, b_grid_desc_bk0_n_bk1.GetElementSpaceSize());
+
+                auto block_work_idx =
+                    block_2_ctile_map_streamk.tile_to_spatial(tile_idx, problem.M, problem.N);
+
+                const index_t block_m_id = __builtin_amdgcn_readfirstlane(block_work_idx[I0]);
+                const index_t block_n_id = __builtin_amdgcn_readfirstlane(block_work_idx[I1]);
+
+                // HACK: this force m/n_block_data_idx_on_grid into SGPR
+                const index_t m_block_data_idx_on_grid =
+                    __builtin_amdgcn_readfirstlane(block_m_id * MPerBlock);
+
+                const index_t n_block_data_idx_on_grid =
+                    __builtin_amdgcn_readfirstlane(block_n_id * NPerBlock);
+
+                const index_t k0_block_data_idx_on_grid =
+                    __builtin_amdgcn_readfirstlane(iter_offset * AK0Number);
+
+                // lds max alignment
+                constexpr auto max_lds_align = math::lcm(AK1Number, BK1Number);
+
+                // A matrix in LDS memory, dst of blockwise copy
+                constexpr auto a_block_desc_ak0_m_ak1 =
+                    GetABlockDescriptor_AK0PerBlock_MPerBlock_AK1();
+
+                // B matrix in LDS memory, dst of blockwise copy
+                constexpr auto b_block_desc_bk0_n_bk1 =
+                    GetBBlockDescriptor_BK0PerBlock_NPerBlock_BK1();
+
+                // A matrix blockwise copy
+                auto a_blockwise_copy = ThreadGroupTensorSliceTransfer_v4r1<
+                    ThisThreadBlock,
+                    AElementwiseOperation,
+                    ck::tensor_operation::element_wise::PassThrough,
+                    InMemoryDataOperationEnum::Set,
+                    Sequence<AK0Number, MPerBlock, AK1Number>,
+                    ABlockTransferThreadClusterLengths_AK0_M_AK1,
+                    ABlockTransferThreadClusterArrangeOrder,
+                    ADataType,
+                    ADataType,
+                    decltype(a_grid_desc_ak0_m_ak1),
+                    decltype(a_block_desc_ak0_m_ak1),
+                    ABlockTransferSrcAccessOrder,
+                    Sequence<0, 1, 2>,
+                    ABlockTransferSrcVectorDim,
+                    2,
+                    ABlockTransferSrcScalarPerVector,
+                    ABlockTransferDstScalarPerVector_AK1,
+                    1,
+                    1,
+                    AThreadTransferSrcResetCoordinateAfterRun,
+                    true,
+                    BlockwiseGemmPipe::GlobalBufferNum>(
+                    a_grid_desc_ak0_m_ak1,
+                    make_multi_index(k0_block_data_idx_on_grid, m_block_data_idx_on_grid, 0),
+                    a_element_op,
+                    a_block_desc_ak0_m_ak1,
+                    make_multi_index(0, 0, 0),
+                    ck::tensor_operation::element_wise::PassThrough{});
+
+                // B matrix blockwise copy
+                auto b_blockwise_copy = ThreadGroupTensorSliceTransfer_v4r1<
+                    ThisThreadBlock,
+                    BElementwiseOperation,
+                    ck::tensor_operation::element_wise::PassThrough,
+                    InMemoryDataOperationEnum::Set,
+                    Sequence<BK0Number, NPerBlock, BK1Number>,
+                    BBlockTransferThreadClusterLengths_BK0_N_BK1,
+                    BBlockTransferThreadClusterArrangeOrder,
+                    BDataType,
+                    BDataType,
+                    decltype(b_grid_desc_bk0_n_bk1),
+                    decltype(b_block_desc_bk0_n_bk1),
+                    BBlockTransferSrcAccessOrder,
+                    Sequence<0, 1, 2>,
+                    BBlockTransferSrcVectorDim,
+                    2,
+                    BBlockTransferSrcScalarPerVector,
+                    BBlockTransferDstScalarPerVector_BK1,
+                    1,
+                    1,
+                    BThreadTransferSrcResetCoordinateAfterRun,
+                    true,
+                    BlockwiseGemmPipe::GlobalBufferNum>(
+                    b_grid_desc_bk0_n_bk1,
+                    make_multi_index(k0_block_data_idx_on_grid, n_block_data_idx_on_grid, 0),
+                    b_element_op,
+                    b_block_desc_bk0_n_bk1,
+                    make_multi_index(0, 0, 0),
+                    ck::tensor_operation::element_wise::PassThrough{});
+
+                // LDS allocation for A and B: be careful of alignment
+                constexpr auto a_block_space_size_aligned = math::integer_least_multiple(
+                    a_block_desc_ak0_m_ak1.GetElementSpaceSize(), max_lds_align);
+
+                // Cast after lds
+                auto a_block_buf = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                    static_cast<ADataType*>(p_shared),
+                    a_block_desc_ak0_m_ak1.GetElementSpaceSize());
+
+                auto b_block_buf = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                    static_cast<BDataType*>(p_shared) +
+                        a_block_space_size_aligned * sizeof(ADataType) / sizeof(BDataType),
+                    b_block_desc_bk0_n_bk1.GetElementSpaceSize());
+
+                constexpr auto a_block_slice_copy_step =
+                    make_multi_index(KPerBlock / AK1Number, 0, 0);
+                constexpr auto b_block_slice_copy_step =
+                    make_multi_index(KPerBlock / BK1Number, 0, 0);
+
+                // Blockwise GEMM pipeline
+                static_assert(std::is_default_constructible_v<BlockwiseGemmPipe>);
+                auto blockwise_gemm_pipeline = BlockwiseGemmPipe{};
+                auto c_thread_buf            = blockwise_gemm_pipeline.GetCThreadBuffer();
+
+                num_k_block_main_loop = __builtin_amdgcn_readfirstlane(
+                    (a_grid_desc_ak0_m_ak1.GetLength(I0) * a_grid_desc_ak0_m_ak1.GetLength(I2)) /
+                    KPerBlock);
+
+                blockwise_gemm_pipeline.template Run<HasMainKBlockLoop, TailNum>(
+                    a_grid_desc_ak0_m_ak1,
+                    a_block_desc_ak0_m_ak1,
+                    a_blockwise_copy,
+                    a_grid_buf,
+                    a_block_buf,
+                    a_block_slice_copy_step,
+                    b_grid_desc_bk0_n_bk1,
+                    b_block_desc_bk0_n_bk1,
+                    b_blockwise_copy,
+                    b_grid_buf,
+                    b_block_buf,
+                    b_block_slice_copy_step,
+                    c_thread_buf,
+                    num_k_block_main_loop);
+
+                // shuffle C and write out
+                {
+                    static_assert(MXdlPerWave % CShuffleMXdlPerWavePerShuffle == 0 &&
+                                      NXdlPerWave % CShuffleNXdlPerWavePerShuffle == 0,
+                                  "wrong!");
+
+                    constexpr index_t MWave = MPerBlock / (MXdlPerWave * MPerXdl);
+                    constexpr index_t NWave = NPerBlock / (NXdlPerWave * NPerXdl);
+
+                    // TODO: hacky, fix it!
+                    constexpr auto c_thread_desc_m0_n0_m1_n1_m2_m3_m4_n2 =
+                        blockwise_gemm_pipeline.GetCThreadDescriptor_M0_N0_M1_N1_M2_M3_M4_N2();
+
+                    // TODO: hacky, fix it!
+                    // c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp is only used to get lengths
+                    constexpr auto c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp =
+                        blockwise_gemm_pipeline.GetCBlockDescriptor_M0_N0_M1_N1_M2_M3_M4_N2();
+
+                    constexpr auto M0 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I0);
+                    constexpr auto N0 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I1);
+                    constexpr auto M1 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I2);
+                    constexpr auto N1 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I3);
+                    constexpr auto M2 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I4);
+                    constexpr auto M3 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I5);
+                    constexpr auto M4 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I6);
+                    constexpr auto N2 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I7);
+
+                    constexpr auto c_shuffle_block_desc_mblock_mperblock_nblock_nperblock =
+                        GetCShuffleBlockDescriptor_MBlock_MPerBlock_NBlock_NPerBlock();
+
+                    auto c_shuffle_block_buf = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                        static_cast<CShuffleDataType*>(p_shared),
+                        c_shuffle_block_desc_mblock_mperblock_nblock_nperblock
+                            .GetElementSpaceSize());
+
+                    constexpr auto c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2 =
+                        transform_tensor_descriptor(
+                            c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                            make_tuple(
+                                make_freeze_transform(I0),
+                                make_unmerge_transform(make_tuple(
+                                    Number<CShuffleMXdlPerWavePerShuffle>{}, // M0 (MXdlPerWave) per
+                                                                             // shuffle
+                                    M1,                                      // M1 = MWave
+                                    M2, // M2 * M3 * M4 = MPerXdl
+                                    M3,
+                                    M4)),
+                                make_freeze_transform(I0),
+                                make_unmerge_transform(make_tuple(
+                                    Number<CShuffleNXdlPerWavePerShuffle>{}, // N0 (NXdlPerWave) per
+                                                                             // shuffle
+                                    N1,                                      // N1 = NWave
+                                    N2))),                                   // N2 = NPerXdl
+                            make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}, Sequence<3>{}),
+                            make_tuple(Sequence<>{},
+                                       Sequence<0, 2, 4, 5, 6>{},
+                                       Sequence<>{},
+                                       Sequence<1, 3, 7>{}));
+
+                    // calculate origin of thread output tensor on global memory
+                    //     blockwise GEMM c matrix starting index
+                    const auto c_thread_mtx_on_block =
+                        blockwise_gemm_pipeline.CalculateCThreadOriginDataIndex(I0, I0, I0, I0);
+
+                    const index_t m_thread_data_on_block = c_thread_mtx_on_block[I0];
+                    const index_t n_thread_data_on_block = c_thread_mtx_on_block[I1];
+
+                    const auto m_thread_data_on_block_to_m0_m1_m2_m3_m4_adaptor =
+                        make_single_stage_tensor_adaptor(
+                            make_tuple(make_merge_transform(make_tuple(M0, M1, M2, M3, M4))),
+                            make_tuple(Sequence<0, 1, 2, 3, 4>{}),
+                            make_tuple(Sequence<0>{}));
+
+                    const auto m_thread_data_on_block_idx =
+                        m_thread_data_on_block_to_m0_m1_m2_m3_m4_adaptor.CalculateBottomIndex(
+                            make_multi_index(m_thread_data_on_block));
+
+                    const auto n_thread_data_on_block_to_n0_n1_n2_adaptor =
+                        make_single_stage_tensor_adaptor(
+                            make_tuple(make_merge_transform(make_tuple(N0, N1, N2))),
+                            make_tuple(Sequence<0, 1, 2>{}),
+                            make_tuple(Sequence<0>{}));
+
+                    const auto n_thread_data_on_block_idx =
+                        n_thread_data_on_block_to_n0_n1_n2_adaptor.CalculateBottomIndex(
+                            make_multi_index(n_thread_data_on_block));
+
+                    // shuffle: threadwise copy C from VGPR to LDS
+                    auto c_thread_copy_vgpr_to_lds = ThreadwiseTensorSliceTransfer_v1r3<
+                        AccDataType,
+                        CShuffleDataType,
+                        decltype(c_thread_desc_m0_n0_m1_n1_m2_m3_m4_n2),
+                        decltype(c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2),
+                        ck::tensor_operation::element_wise::PassThrough,
+                        Sequence<CShuffleMXdlPerWavePerShuffle,
+                                 CShuffleNXdlPerWavePerShuffle,
+                                 I1,
+                                 I1,
+                                 M2,
+                                 I1,
+                                 M4,
+                                 I1>,
+                        Sequence<0, 1, 2, 3, 4, 5, 6, 7>,
+                        7,
+                        1,
+                        InMemoryDataOperationEnum::Set,
+                        1,
+                        true>{c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2,
+                              make_multi_index(0,
+                                               0,
+                                               m_thread_data_on_block_idx[I1],
+                                               n_thread_data_on_block_idx[I1],
+                                               m_thread_data_on_block_idx[I2],
+                                               m_thread_data_on_block_idx[I3],
+                                               m_thread_data_on_block_idx[I4],
+                                               n_thread_data_on_block_idx[I2]),
+                              ck::tensor_operation::element_wise::PassThrough{}};
+
+                    // shuffle: blockwise copy C from LDS to global
+                    auto c_shuffle_block_copy_lds_to_global = ThreadGroupTensorSliceTransfer_v6r1r2<
+                        ThisThreadBlock,       // ThreadGroup
+                        CElementwiseOperation, // ElementwiseOperation,
+                        // CGlobalMemoryDataOperation, // DstInMemOp,
+                        Sequence<1,
+                                 CShuffleMXdlPerWavePerShuffle * MWave * MPerXdl,
+                                 1,
+                                 CShuffleNXdlPerWavePerShuffle * NWave *
+                                     NPerXdl>, // BlockSliceLengths,
+                        CShuffleBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
+                        Sequence<0, 1, 2, 3>, // typename ThreadClusterArrangeOrder,
+                        CShuffleDataType,     // typename SrcData,
+                        CDataType,            // typename DstData,
+                        decltype(c_shuffle_block_desc_mblock_mperblock_nblock_nperblock),
+                        decltype(c_grid_desc_mblock_mperblock_nblock_nperblock),
+                        Sequence<0, 1, 2, 3>,                           // typename DimAccessOrder,
+                        3,                                              // index_t VectorDim,
+                        CShuffleBlockTransferScalarPerVector_NPerBlock, // index_t ScalarPerVector,
+                        false, // bool ThreadTransferSrcResetCoordinateAfterRun,
+                        false> // bool ThreadTransferDstResetCoordinateAfterRun>
+                        {c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                         make_multi_index(0, 0, 0, 0),
+                         c_grid_desc_mblock_mperblock_nblock_nperblock,
+                         make_multi_index(block_m_id, 0, block_n_id, 0),
+                         c_element_op};
+
+                    // space filling curve for threadwise C in VGPR
+                    constexpr auto sfc_c_vgpr =
+                        SpaceFillingCurve<Sequence<MXdlPerWave, NXdlPerWave, 1, 1, M2, 1, M4, 1>,
+                                          Sequence<0, 1, 2, 3, 4, 5, 6, 7>,
+                                          Sequence<CShuffleMXdlPerWavePerShuffle,
+                                                   CShuffleNXdlPerWavePerShuffle,
+                                                   1,
+                                                   1,
+                                                   M2,
+                                                   1,
+                                                   M4,
+                                                   1>>{};
+
+                    // space filling curve for shuffled blockwise C in global mem
+                    constexpr auto sfc_c_global = SpaceFillingCurve<
+                        Sequence<1, MPerBlock, 1, NPerBlock>,
+                        Sequence<0, 2, 1, 3>,
+                        Sequence<1,
+                                 CShuffleMXdlPerWavePerShuffle * MWave * MPerXdl,
+                                 1,
+                                 CShuffleNXdlPerWavePerShuffle * NWave * NPerXdl>>{};
+
+                    constexpr index_t num_access = sfc_c_vgpr.GetNumOfAccess();
+
+                    static_assert(num_access == sfc_c_global.GetNumOfAccess(), "wrong!");
+
+                    static_for<0, num_access, 1>{}([&](auto access_id) {
+                        // make sure it's safe to write to LDS
+                        block_sync_lds();
+
+                        // each thread write its data from VGPR to LDS
+                        c_thread_copy_vgpr_to_lds.Run(c_thread_desc_m0_n0_m1_n1_m2_m3_m4_n2,
+                                                      sfc_c_vgpr.GetIndexTupleOfNumber(access_id),
+                                                      c_thread_buf,
+                                                      c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2,
+                                                      c_shuffle_block_buf);
+
+                        // make sure it's safe to read from LDS
+                        block_sync_lds();
+                        c_shuffle_block_copy_lds_to_global.SetSrcSliceOrigin(
+                            c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                            make_tuple(0, 0, 0, 0));
+
+                        if(is_dp_block)
+                        {
+                            // each block copy its data from LDS to global
+                            c_shuffle_block_copy_lds_to_global
+                                .template Run<decltype(c_shuffle_block_buf),
+                                              decltype(c_grid_buf),
+                                              InMemoryDataOperationEnum::Set>(
+                                    c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                                    c_shuffle_block_buf,
+                                    c_grid_desc_mblock_mperblock_nblock_nperblock,
+                                    c_grid_buf);
+                        }
+                        else if(is_sk_block)
+                        {
+                            // each block copy its data from LDS to global
+                            c_shuffle_block_copy_lds_to_global
+                                .template Run<decltype(c_shuffle_block_buf),
+                                              decltype(c_grid_buf),
+                                              InMemoryDataOperationEnum::AtomicAdd>(
+                                    c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                                    c_shuffle_block_buf,
+                                    c_grid_desc_mblock_mperblock_nblock_nperblock,
+                                    c_grid_buf);
+                        }
+
+                        if constexpr(access_id < num_access - 1)
+                        {
+                            constexpr auto c_global_step = sfc_c_global.GetForwardStep(access_id);
+
+                            // move on C
+                            c_shuffle_block_copy_lds_to_global.MoveDstSliceWindow(
+                                c_grid_desc_mblock_mperblock_nblock_nperblock, c_global_step);
+                        }
+                    });
+                }
+                // exit condition
+                iter_end -= current_iter_length;
+                if(iter_end <= iter_start)
+                    break;
+                // make sure next loop LDS is ready for use
+                block_sync_lds();
+            }
+        }
+    }
+
+    template <bool HasMainKBlockLoop,
+              InMemoryDataOperationEnum CGlobalMemoryDataOperation,
+              TailNumber TailNum = TailNumber::Odd>
+    __device__ static void Run_2Lds(const ADataType* p_a_grid,
+                                    const BDataType* p_b_grid,
+                                    CDataType* p_c_grid,
+                                    void* p_shared_0,
+                                    void* p_shared_1,
+                                    Problem& problem)
+    {
+
+        const AElementwiseOperation a_element_op{};
+        const BElementwiseOperation b_element_op{};
+        const CElementwiseOperation c_element_op{};
+
+        Block2CTileMap_streamk block_2_ctile_map_streamk(
+            problem.M, problem.N, AK0Number * problem.KPadded, problem.Grid_size);
+        uint32_t iter_start, iter_end;
+        bool is_sk_block, is_dp_block; //, is_padding_block; //, is_reduction_block;
+        index_t num_k_block_main_loop;
+
+        for(auto block_idx = get_block_1d_id();
+            block_idx < block_2_ctile_map_streamk.get_grid_dims();
+            block_idx += gridDim.x)
+        {
+            is_sk_block =
+                static_cast<uint32_t>(block_idx) < block_2_ctile_map_streamk.sk_num_blocks;
+            is_dp_block =
+                static_cast<uint32_t>(block_idx) >= block_2_ctile_map_streamk.dp_start_block_idx &&
+                static_cast<uint32_t>(block_idx) <
+                    block_2_ctile_map_streamk.reduction_start_block_idx;
+
+            block_2_ctile_map_streamk.get_block_itr(block_idx, iter_start, iter_end);
+            num_k_block_main_loop = iter_end - iter_start;
+
+            {
+
+                uint32_t current_iter_length = __builtin_amdgcn_readfirstlane(
+                    block_2_ctile_map_streamk.get_current_iter_length(
+                        iter_start, iter_end, num_k_block_main_loop));
+                uint32_t tile_idx, iter_offset;
+                block_2_ctile_map_streamk.get_tile_idx_with_offset(
+                    iter_end - 1, tile_idx, iter_offset);
+                iter_offset = __builtin_amdgcn_readfirstlane(iter_offset - current_iter_length + 1);
+
+                const auto a_grid_desc_ak0_m_ak1 = MakeAGridDescriptor_AK0_M_AK1(problem.M,
+                                                                                 problem.MPadded,
+                                                                                 problem.K,
+                                                                                 problem.KPadded,
+                                                                                 problem.StrideA,
+                                                                                 problem.AK0);
+                const auto b_grid_desc_bk0_n_bk1 = MakeBGridDescriptor_BK0_N_BK1(problem.K,
+                                                                                 problem.KPadded,
+                                                                                 problem.N,
+                                                                                 problem.NPadded,
+                                                                                 problem.StrideB,
+                                                                                 problem.BK0);
+                const auto c_grid_desc_m_n       = MakeCGridDescriptor_M_N(
+                    problem.M, problem.MPadded, problem.N, problem.NPadded, problem.StrideC);
+
+                const auto c_grid_desc_mblock_mperblock_nblock_nperblock =
+                    MakeCGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
+                        c_grid_desc_m_n, problem.MBlock, problem.NBlock);
+
+                auto c_grid_buf = make_dynamic_buffer<AddressSpaceEnum::Global>(
+                    p_c_grid, c_grid_desc_mblock_mperblock_nblock_nperblock.GetElementSpaceSize());
+
+                const auto a_grid_buf = make_dynamic_buffer<AddressSpaceEnum::Global>(
+                    p_a_grid, a_grid_desc_ak0_m_ak1.GetElementSpaceSize());
+                const auto b_grid_buf = make_dynamic_buffer<AddressSpaceEnum::Global>(
+                    p_b_grid, b_grid_desc_bk0_n_bk1.GetElementSpaceSize());
+
+                auto block_work_idx =
+                    block_2_ctile_map_streamk.tile_to_spatial(tile_idx, problem.M, problem.N);
+
+                const index_t block_m_id = __builtin_amdgcn_readfirstlane(block_work_idx[I0]);
+                const index_t block_n_id = __builtin_amdgcn_readfirstlane(block_work_idx[I1]);
+
+                // HACK: this force m/n_block_data_idx_on_grid into SGPR
+                const index_t m_block_data_idx_on_grid =
+                    __builtin_amdgcn_readfirstlane(block_m_id * MPerBlock);
+
+                const index_t n_block_data_idx_on_grid =
+                    __builtin_amdgcn_readfirstlane(block_n_id * NPerBlock);
+                const index_t k0_block_data_idx_on_grid =
+                    __builtin_amdgcn_readfirstlane(iter_offset * AK0Number);
+
+                // lds max alignment
+                constexpr auto max_lds_align = math::lcm(AK1Number, BK1Number);
+
+                // A matrix in LDS memory, dst of blockwise copy
+                constexpr auto a_block_desc_ak0_m_ak1 =
+                    GetABlockDescriptor_AK0PerBlock_MPerBlock_AK1();
+
+                // B matrix in LDS memory, dst of blockwise copy
+                constexpr auto b_block_desc_bk0_n_bk1 =
+                    GetBBlockDescriptor_BK0PerBlock_NPerBlock_BK1();
+
+                // A matrix blockwise copy
+                auto a_blockwise_copy = ThreadGroupTensorSliceTransfer_v4r1<
+                    ThisThreadBlock,
+                    AElementwiseOperation,
+                    ck::tensor_operation::element_wise::PassThrough,
+                    InMemoryDataOperationEnum::Set,
+                    Sequence<AK0Number, MPerBlock, AK1Number>,
+                    ABlockTransferThreadClusterLengths_AK0_M_AK1,
+                    ABlockTransferThreadClusterArrangeOrder,
+                    ADataType,
+                    ADataType,
+                    decltype(a_grid_desc_ak0_m_ak1),
+                    decltype(a_block_desc_ak0_m_ak1),
+                    ABlockTransferSrcAccessOrder,
+                    Sequence<0, 1, 2>,
+                    ABlockTransferSrcVectorDim,
+                    2,
+                    ABlockTransferSrcScalarPerVector,
+                    ABlockTransferDstScalarPerVector_AK1,
+                    1,
+                    1,
+                    AThreadTransferSrcResetCoordinateAfterRun,
+                    true,
+                    BlockwiseGemmPipe::GlobalBufferNum>(
+                    a_grid_desc_ak0_m_ak1,
+                    make_multi_index(k0_block_data_idx_on_grid, m_block_data_idx_on_grid, 0),
+                    a_element_op,
+                    a_block_desc_ak0_m_ak1,
+                    make_multi_index(0, 0, 0),
+                    ck::tensor_operation::element_wise::PassThrough{});
+
+                // B matrix blockwise copy
+                auto b_blockwise_copy = ThreadGroupTensorSliceTransfer_v4r1<
+                    ThisThreadBlock,
+                    BElementwiseOperation,
+                    ck::tensor_operation::element_wise::PassThrough,
+                    InMemoryDataOperationEnum::Set,
+                    Sequence<BK0Number, NPerBlock, BK1Number>,
+                    BBlockTransferThreadClusterLengths_BK0_N_BK1,
+                    BBlockTransferThreadClusterArrangeOrder,
+                    BDataType,
+                    BDataType,
+                    decltype(b_grid_desc_bk0_n_bk1),
+                    decltype(b_block_desc_bk0_n_bk1),
+                    BBlockTransferSrcAccessOrder,
+                    Sequence<0, 1, 2>,
+                    BBlockTransferSrcVectorDim,
+                    2,
+                    BBlockTransferSrcScalarPerVector,
+                    BBlockTransferDstScalarPerVector_BK1,
+                    1,
+                    1,
+                    BThreadTransferSrcResetCoordinateAfterRun,
+                    true,
+                    BlockwiseGemmPipe::GlobalBufferNum>(
+                    b_grid_desc_bk0_n_bk1,
+                    make_multi_index(k0_block_data_idx_on_grid, n_block_data_idx_on_grid, 0),
+                    b_element_op,
+                    b_block_desc_bk0_n_bk1,
+                    make_multi_index(0, 0, 0),
+                    ck::tensor_operation::element_wise::PassThrough{});
+
+                // LDS allocation for A and B: be careful of alignment
+                constexpr auto a_block_space_size_aligned = math::integer_least_multiple(
+                    a_block_desc_ak0_m_ak1.GetElementSpaceSize(), max_lds_align);
+
+                auto a_block_buf_ping = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                    static_cast<ADataType*>(p_shared_0),
+                    a_block_desc_ak0_m_ak1.GetElementSpaceSize());
+
+                auto b_block_buf_ping = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                    static_cast<BDataType*>(p_shared_0) +
+                        a_block_space_size_aligned * sizeof(ADataType) / sizeof(BDataType),
+                    b_block_desc_bk0_n_bk1.GetElementSpaceSize());
+
+                auto a_block_buf_pong = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                    static_cast<ADataType*>(p_shared_1),
+                    a_block_desc_ak0_m_ak1.GetElementSpaceSize());
+
+                auto b_block_buf_pong = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                    static_cast<BDataType*>(p_shared_1) +
+                        a_block_space_size_aligned * sizeof(ADataType) / sizeof(BDataType),
+                    b_block_desc_bk0_n_bk1.GetElementSpaceSize());
+
+                auto a_block_bufs = make_tuple(a_block_buf_ping, a_block_buf_pong);
+                auto b_block_bufs = make_tuple(b_block_buf_ping, b_block_buf_pong);
+
+                constexpr auto a_block_slice_copy_step =
+                    make_multi_index(KPerBlock / AK1Number, 0, 0);
+                constexpr auto b_block_slice_copy_step =
+                    make_multi_index(KPerBlock / BK1Number, 0, 0);
+
+                // Blockwise GEMM pipeline
+                static_assert(std::is_default_constructible_v<BlockwiseGemmPipe>);
+                auto blockwise_gemm_pipeline = BlockwiseGemmPipe{};
+                auto c_thread_buf            = blockwise_gemm_pipeline.GetCThreadBuffer();
+
+                num_k_block_main_loop = __builtin_amdgcn_readfirstlane(
+                    (a_grid_desc_ak0_m_ak1.GetLength(I0) * a_grid_desc_ak0_m_ak1.GetLength(I2)) /
+                    KPerBlock);
+
+                blockwise_gemm_pipeline.template Run<HasMainKBlockLoop, TailNum>(
+                    a_grid_desc_ak0_m_ak1,
+                    a_block_desc_ak0_m_ak1,
+                    a_blockwise_copy,
+                    a_grid_buf,
+                    a_block_bufs,
+                    a_block_slice_copy_step,
+                    b_grid_desc_bk0_n_bk1,
+                    b_block_desc_bk0_n_bk1,
+                    b_blockwise_copy,
+                    b_grid_buf,
+                    b_block_bufs,
+                    b_block_slice_copy_step,
+                    c_thread_buf,
+                    num_k_block_main_loop);
+
+                // shuffle C and write out
+                {
+                    static_assert(MXdlPerWave % CShuffleMXdlPerWavePerShuffle == 0 &&
+                                      NXdlPerWave % CShuffleNXdlPerWavePerShuffle == 0,
+                                  "wrong!");
+
+                    constexpr index_t MWave = MPerBlock / (MXdlPerWave * MPerXdl);
+                    constexpr index_t NWave = NPerBlock / (NXdlPerWave * NPerXdl);
+
+                    // TODO: hacky, fix it!
+                    constexpr auto c_thread_desc_m0_n0_m1_n1_m2_m3_m4_n2 =
+                        blockwise_gemm_pipeline.GetCThreadDescriptor_M0_N0_M1_N1_M2_M3_M4_N2();
+
+                    // TODO: hacky, fix it!
+                    // c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp is only used to get lengths
+                    constexpr auto c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp =
+                        blockwise_gemm_pipeline.GetCBlockDescriptor_M0_N0_M1_N1_M2_M3_M4_N2();
+
+                    constexpr auto M0 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I0);
+                    constexpr auto N0 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I1);
+                    constexpr auto M1 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I2);
+                    constexpr auto N1 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I3);
+                    constexpr auto M2 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I4);
+                    constexpr auto M3 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I5);
+                    constexpr auto M4 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I6);
+                    constexpr auto N2 = c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2_tmp.GetLength(I7);
+
+                    constexpr auto c_shuffle_block_desc_mblock_mperblock_nblock_nperblock =
+                        GetCShuffleBlockDescriptor_MBlock_MPerBlock_NBlock_NPerBlock();
+
+                    auto c_shuffle_block_buf = make_dynamic_buffer<AddressSpaceEnum::Lds>(
+                        static_cast<CShuffleDataType*>(p_shared_0),
+                        c_shuffle_block_desc_mblock_mperblock_nblock_nperblock
+                            .GetElementSpaceSize());
+
+                    constexpr auto c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2 =
+                        transform_tensor_descriptor(
+                            c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                            make_tuple(
+                                make_freeze_transform(I0),
+                                make_unmerge_transform(make_tuple(
+                                    Number<CShuffleMXdlPerWavePerShuffle>{}, // M0 (MXdlPerWave) per
+                                                                             // shuffle
+                                    M1,                                      // M1 = MWave
+                                    M2, // M2 * M3 * M4 = MPerXdl
+                                    M3,
+                                    M4)),
+                                make_freeze_transform(I0),
+                                make_unmerge_transform(make_tuple(
+                                    Number<CShuffleNXdlPerWavePerShuffle>{}, // N0 (NXdlPerWave) per
+                                                                             // shuffle
+                                    N1,                                      // N1 = NWave
+                                    N2))),                                   // N2 = NPerXdl
+                            make_tuple(Sequence<0>{}, Sequence<1>{}, Sequence<2>{}, Sequence<3>{}),
+                            make_tuple(Sequence<>{},
+                                       Sequence<0, 2, 4, 5, 6>{},
+                                       Sequence<>{},
+                                       Sequence<1, 3, 7>{}));
+
+                    // calculate origin of thread output tensor on global memory
+                    //     blockwise GEMM c matrix starting index
+                    const auto c_thread_mtx_on_block =
+                        blockwise_gemm_pipeline.CalculateCThreadOriginDataIndex(I0, I0, I0, I0);
+
+                    const index_t m_thread_data_on_block = c_thread_mtx_on_block[I0];
+                    const index_t n_thread_data_on_block = c_thread_mtx_on_block[I1];
+
+                    const auto m_thread_data_on_block_to_m0_m1_m2_m3_m4_adaptor =
+                        make_single_stage_tensor_adaptor(
+                            make_tuple(make_merge_transform(make_tuple(M0, M1, M2, M3, M4))),
+                            make_tuple(Sequence<0, 1, 2, 3, 4>{}),
+                            make_tuple(Sequence<0>{}));
+
+                    const auto m_thread_data_on_block_idx =
+                        m_thread_data_on_block_to_m0_m1_m2_m3_m4_adaptor.CalculateBottomIndex(
+                            make_multi_index(m_thread_data_on_block));
+
+                    const auto n_thread_data_on_block_to_n0_n1_n2_adaptor =
+                        make_single_stage_tensor_adaptor(
+                            make_tuple(make_merge_transform(make_tuple(N0, N1, N2))),
+                            make_tuple(Sequence<0, 1, 2>{}),
+                            make_tuple(Sequence<0>{}));
+
+                    const auto n_thread_data_on_block_idx =
+                        n_thread_data_on_block_to_n0_n1_n2_adaptor.CalculateBottomIndex(
+                            make_multi_index(n_thread_data_on_block));
+
+                    // shuffle: threadwise copy C from VGPR to LDS
+                    auto c_thread_copy_vgpr_to_lds = ThreadwiseTensorSliceTransfer_v1r3<
+                        AccDataType,
+                        CShuffleDataType,
+                        decltype(c_thread_desc_m0_n0_m1_n1_m2_m3_m4_n2),
+                        decltype(c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2),
+                        ck::tensor_operation::element_wise::PassThrough,
+                        Sequence<CShuffleMXdlPerWavePerShuffle,
+                                 CShuffleNXdlPerWavePerShuffle,
+                                 I1,
+                                 I1,
+                                 M2,
+                                 I1,
+                                 M4,
+                                 I1>,
+                        Sequence<0, 1, 2, 3, 4, 5, 6, 7>,
+                        7,
+                        1,
+                        InMemoryDataOperationEnum::Set,
+                        1,
+                        true>{c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2,
+                              make_multi_index(0,
+                                               0,
+                                               m_thread_data_on_block_idx[I1],
+                                               n_thread_data_on_block_idx[I1],
+                                               m_thread_data_on_block_idx[I2],
+                                               m_thread_data_on_block_idx[I3],
+                                               m_thread_data_on_block_idx[I4],
+                                               n_thread_data_on_block_idx[I2]),
+                              ck::tensor_operation::element_wise::PassThrough{}};
+                    // shuffle: blockwise copy C from LDS to global
+                    auto c_shuffle_block_copy_lds_to_global = ThreadGroupTensorSliceTransfer_v6r1r2<
+                        ThisThreadBlock,       // ThreadGroup
+                        CElementwiseOperation, // ElementwiseOperation,
+                        // CGlobalMemoryDataOperation, // DstInMemOp,
+                        Sequence<1,
+                                 CShuffleMXdlPerWavePerShuffle * MWave * MPerXdl,
+                                 1,
+                                 CShuffleNXdlPerWavePerShuffle * NWave *
+                                     NPerXdl>, // BlockSliceLengths,
+                        CShuffleBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
+                        Sequence<0, 1, 2, 3>, // typename ThreadClusterArrangeOrder,
+                        CShuffleDataType,     // typename SrcData,
+                        CDataType,            // typename DstData,
+                        decltype(c_shuffle_block_desc_mblock_mperblock_nblock_nperblock),
+                        decltype(c_grid_desc_mblock_mperblock_nblock_nperblock),
+                        Sequence<0, 1, 2, 3>,                           // typename DimAccessOrder,
+                        3,                                              // index_t VectorDim,
+                        CShuffleBlockTransferScalarPerVector_NPerBlock, // index_t ScalarPerVector,
+                        false, // bool ThreadTransferSrcResetCoordinateAfterRun,
+                        false> // bool ThreadTransferDstResetCoordinateAfterRun>
+                        {c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                         make_multi_index(0, 0, 0, 0),
+                         c_grid_desc_mblock_mperblock_nblock_nperblock,
+                         make_multi_index(block_m_id, 0, block_n_id, 0),
+                         c_element_op};
+
+                    // space filling curve for threadwise C in VGPR
+                    constexpr auto sfc_c_vgpr =
+                        SpaceFillingCurve<Sequence<MXdlPerWave, NXdlPerWave, 1, 1, M2, 1, M4, 1>,
+                                          Sequence<0, 1, 2, 3, 4, 5, 6, 7>,
+                                          Sequence<CShuffleMXdlPerWavePerShuffle,
+                                                   CShuffleNXdlPerWavePerShuffle,
+                                                   1,
+                                                   1,
+                                                   M2,
+                                                   1,
+                                                   M4,
+                                                   1>>{};
+
+                    // space filling curve for shuffled blockwise C in global mem
+                    constexpr auto sfc_c_global = SpaceFillingCurve<
+                        Sequence<1, MPerBlock, 1, NPerBlock>,
+                        Sequence<0, 2, 1, 3>,
+                        Sequence<1,
+                                 CShuffleMXdlPerWavePerShuffle * MWave * MPerXdl,
+                                 1,
+                                 CShuffleNXdlPerWavePerShuffle * NWave * NPerXdl>>{};
+
+                    constexpr index_t num_access = sfc_c_vgpr.GetNumOfAccess();
+
+                    static_assert(num_access == sfc_c_global.GetNumOfAccess(), "wrong!");
+
+                    static_for<0, num_access, 1>{}([&](auto access_id) {
+                        // make sure it's safe to write to LDS
+                        block_sync_lds();
+
+                        // each thread write its data from VGPR to LDS
+                        c_thread_copy_vgpr_to_lds.Run(c_thread_desc_m0_n0_m1_n1_m2_m3_m4_n2,
+                                                      sfc_c_vgpr.GetIndexTupleOfNumber(access_id),
+                                                      c_thread_buf,
+                                                      c_block_desc_m0_n0_m1_n1_m2_m3_m4_n2,
+                                                      c_shuffle_block_buf);
+
+                        // make sure it's safe to read from LDS
+                        block_sync_lds();
+                        c_shuffle_block_copy_lds_to_global.SetSrcSliceOrigin(
+                            c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                            make_tuple(0, 0, 0, 0));
+
+                        if(is_dp_block)
+                        {
+                            // each block copy its data from LDS to global
+                            c_shuffle_block_copy_lds_to_global
+                                .template Run<decltype(c_shuffle_block_buf),
+                                              decltype(c_grid_buf),
+                                              InMemoryDataOperationEnum::Set>(
+                                    c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                                    c_shuffle_block_buf,
+                                    c_grid_desc_mblock_mperblock_nblock_nperblock,
+                                    c_grid_buf);
+                        }
+                        else if(is_sk_block)
+                        {
+                            // each block copy its data from LDS to global
+                            c_shuffle_block_copy_lds_to_global
+                                .template Run<decltype(c_shuffle_block_buf),
+                                              decltype(c_grid_buf),
+                                              InMemoryDataOperationEnum::AtomicAdd>(
+                                    c_shuffle_block_desc_mblock_mperblock_nblock_nperblock,
+                                    c_shuffle_block_buf,
+                                    c_grid_desc_mblock_mperblock_nblock_nperblock,
+                                    c_grid_buf);
+                        }
+                        if constexpr(access_id < num_access - 1)
+                        {
+                            constexpr auto c_global_step = sfc_c_global.GetForwardStep(access_id);
+
+                            // move on C
+                            c_shuffle_block_copy_lds_to_global.MoveDstSliceWindow(
+                                c_grid_desc_mblock_mperblock_nblock_nperblock, c_global_step);
+                        }
+                    });
+                }
+            }
+        }
+    }
+};
+
+} // namespace ck

include/ck/tensor_operation/gpu/warp/smfmac_xdlops_gemm.hpp

+// SPDX-License-Identifier: MIT
+// Copyright (c) 2024, Advanced Micro Devices, Inc. All rights reserved.
+
+#pragma once
+
+#include "ck/utility/common_header.hpp"
+#include "ck/utility/math.hpp"
+#include "ck/utility/amd_smfmac.hpp"
+
+namespace ck {
+
+enum struct SmfmacInstr
+{
+    smfmac_f32_16x16x32f16 = 0,
+    smfmac_f32_32x32x16f16,
+    smfmac_f32_16x16x32bf16,
+    smfmac_f32_32x32x16bf16,
+};
+
+template <SmfmacInstr instr>
+struct smfmac_type;
+
+template <>
+struct smfmac<SmfmacInstr::smfmac_f32_16x16x32f16>
+{
+    static constexpr index_t group_size          = 4;
+    static constexpr index_t num_groups_per_blk  = 1;
+    static constexpr index_t num_regs_per_blk    = 4;
+    static constexpr index_t num_threads_per_blk = 16;
+    static constexpr index_t wave_size           = 64;
+    static constexpr index_t num_input_blks      = 4;
+    static constexpr index_t num_output_blks     = 1;
+    static constexpr index_t m_per_blk           = 16;
+    static constexpr index_t n_per_blk           = 16;
+    static constexpr index_t k_per_blk           = 8;
+    static constexpr bool is_k_reduction         = true;
+
+    template <index_t MPerXdlops, index_t NPerXdlops, class FloatA, class FloatB, class FloatC>
+    __device__ void run(const FloatA& a, const FloatB& b, const int32_t& idx, FloatC& reg_c) const
+    {
+        intrin_smfmac_f32_16x16x32f16<MPerXdlops, NPerXdlops>::Run(a, b, idx, reg_c);
+    }
+};
+
+template <>
+struct smfmac<SmfmacInstr::smfmac_f32_32x32x16f16>
+{
+    static constexpr index_t group_size          = 4;
+    static constexpr index_t num_groups_per_blk  = 4;
+    static constexpr index_t num_regs_per_blk    = 16;
+    static constexpr index_t num_threads_per_blk = 32;
+    static constexpr index_t wave_size           = 64;
+    static constexpr index_t num_input_blks      = 2;
+    static constexpr index_t num_output_blks     = 1;
+    static constexpr index_t m_per_blk           = 32;
+    static constexpr index_t n_per_blk           = 32;
+    static constexpr index_t k_per_blk           = 16;
+    static constexpr bool is_k_reduction         = true;
+
+    template <index_t MPerXdlops, index_t NPerXdlops, class FloatA, class FloatB, class FloatC>
+    __device__ void run(const FloatA& a, const FloatB& b, const int32_t& idx, FloatC& reg_c) const
+    {
+        intrin_smfmac_f32_32x32x16f16<MPerXdlops, NPerXdlops>::Run(a, b, idx, reg_c);
+    }
+};
+
+template <>
+struct smfmac<SmfmacInstr::smfmac_f32_16x16x32bf16>
+{
+    static constexpr index_t group_size          = 4;
+    static constexpr index_t num_groups_per_blk  = 1;
+    static constexpr index_t num_regs_per_blk    = 4;
+    static constexpr index_t num_threads_per_blk = 16;
+    static constexpr index_t wave_size           = 64;
+    static constexpr index_t num_input_blks      = 4;
+    static constexpr index_t num_output_blks     = 1;
+    static constexpr index_t m_per_blk           = 16;
+    static constexpr index_t n_per_blk           = 16;
+    static constexpr index_t k_per_blk           = 8;
+    static constexpr bool is_k_reduction         = true;
+
+    template <index_t MPerXdlops, index_t NPerXdlops, class FloatA, class FloatB, class FloatC>
+    __device__ void run(const FloatA& a, const FloatB& b, const int32_t& idx, FloatC& reg_c) const
+    {
+        intrin_smfmac_f32_16x16x32bf16<MPerXdlops, NPerXdlops>::Run(a, b, idx, reg_c);
+    }
+};
+
+template <>
+struct smfmac<SmfmacInstr::smfmac_f32_32x32x16bf16>
+{
+    static constexpr index_t group_size          = 4;
+    static constexpr index_t num_groups_per_blk  = 4;
+    static constexpr index_t num_regs_per_blk    = 16;
+    static constexpr index_t num_threads_per_blk = 32;
+    static constexpr index_t wave_size           = 64;
+    static constexpr index_t num_input_blks      = 2;
+    static constexpr index_t num_output_blks     = 1;
+    static constexpr index_t m_per_blk           = 32;
+    static constexpr index_t n_per_blk           = 32;
+    static constexpr index_t k_per_blk           = 16;
+    static constexpr bool is_k_reduction         = true;
+
+    template <index_t MPerXdlops, index_t NPerXdlops, class FloatA, class FloatB, class FloatC>
+    __device__ void run(const FloatA& a, const FloatB& b, const int32_t& idx, FloatC& reg_c) const
+    {
+        intrin_smfmac_f32_32x32x16bf16<MPerXdlops, NPerXdlops>::Run(a, b, idx, reg_c);
+    }
+};
+
+template <typename base_type,
+          index_t MPerXdlops,
+          index_t NPerXdlops,
+          typename additional_type = base_type>
+struct SmfmacSelector
+{
+    template <typename base_type_,
+              index_t MPerXdlops_,
+              index_t NPerXdlops_,
+              typename additional_type_ = base_type_>
+    static constexpr auto GetSmfmac();
+
+    template <>
+    static constexpr auto GetSmfmac<half_t, 16, 16>()
+    {
+        return SmfmacInstr::smfmac_f32_16x16x32f16;
+    }
+
+    template <>
+    static constexpr auto GetSmfmac<half_t, 32, 32>()
+    {
+        return SmfmacInstr::smfmac_f32_32x32x16f16;
+    }
+
+    template <>
+    static constexpr auto GetSmfmac<bhalf_t, 16, 16>()
+    {
+        return SmfmacInstr::smfmac_f32_16x16x32bf16;
+    }
+
+    template <>
+    static constexpr auto GetSmfmac<bhalf_t, 32, 32>()
+    {
+        return SmfmacInstr::smfmac_f32_32x32x16bf16;
+    }
+
+    static constexpr auto selected_smfmac =
+        smfmac_type<GetSmfmac<base_type, MPerXdlops, NPerXdlops, additional_type>()>{};
+
+    __host__ __device__ constexpr SmfmacSelector()
+    {
+        static_assert(selected_smfmac.group_size * selected_smfmac.num_groups_per_blk ==
+                          selected_smfmac.num_regs_per_blk,
+                      "wrong! num_regs_per_blk");
+
+        static_assert(selected_smfmac.num_threads_per_blk == selected_smfmac.n_per_blk,
+                      "n_per_blk != num_threads_per_blk");
+
+        static_assert(selected_smfmac.num_regs_per_blk * selected_smfmac.num_input_blks ==
+                          selected_smfmac.m_per_blk,
+                      "m_per_blk != num_input_blks * num_regs_per_blk");
+
+        static_assert(selected_smfmac.num_output_blks == selected_smfmac.num_input_blks ||
+                          selected_smfmac.num_output_blks == 1,
+                      "incorrect num_output_blks");
+
+        static_assert(selected_smfmac.num_regs_per_blk * selected_smfmac.wave_size ==
+                          selected_smfmac.m_per_blk * selected_smfmac.n_per_blk,
+                      "num_regs_per_blk incorrect");
+
+        static_assert(selected_smfmac.is_k_reduction ||
+                          (selected_smfmac.num_input_blks == selected_smfmac.num_output_blks),
+                      "is_k_reduction wrong!");
+    }
+
+    static constexpr index_t GetKPerXdlops()
+    {
+        return (selected_smfmac.is_k_reduction ? selected_smfmac.num_input_blks : 1) *
+               selected_smfmac.k_per_blk;
+    }
+
+    static constexpr index_t GetK1PerXdlops() { return selected_smfmac.k_per_blk; }
+};
+
+template <typename base_type,
+          index_t MPerXdlops,
+          index_t NPerXdlops,
+          index_t KPack,
+          typename additional_type = base_type>
+struct SparseXdlopsGemm
+{
+    static constexpr auto I0 = Number<0>{};
+    static constexpr auto I1 = Number<1>{};
+    static constexpr auto I2 = Number<2>{};
+    static constexpr auto I3 = Number<3>{};
+    static constexpr auto I4 = Number<4>{};
+    static constexpr auto I5 = Number<5>{};
+
+    using CIndex   = MultiIndex<2>;
+    using CIndex4D = MultiIndex<4>;
+
+    __device__ static constexpr index_t GetNumBlks() { return smfmac_instr.num_output_blks; }
+
+    __device__ static constexpr index_t GetNumXdlops()
+    {
+        return MPerXdlops * NPerXdlops /
+               (smfmac_instr.m_per_blk * smfmac_instr.n_per_blk * smfmac_instr.num_output_blks);
+    }
+
+    __host__ __device__ constexpr SparseXdlopsGemm()
+    {
+        static_assert(NPerXdlops == 16 || NPerXdlops == 32,
+                      "Only support GemmNPerXdlops == 16 or 32 for smfmac xdlops");
+
+        static_assert(MPerXdlops == 16 || MPerXdlops == 32,
+                      "Only support GemmMPerXdlops == 16 or 32 for smfmac xdlops");
+
+        static_assert(KPack % smfmac_instr.k_per_blk == 0, "KPack cannot be divided by k_per_blk");
+    }
+
+    // XDL output supporting C = A * B
+    // M2_N2 -> M2_M3_M4_N2
+    template <typename CDesc_M0_N0_M1_N1_M2_N2>
+    __host__ __device__ static constexpr auto
+    MakeCDescriptor_M0_N0_M1_N1_M2_M3_M4_N2(const CDesc_M0_N0_M1_N1_M2_N2& c_desc_m0_n0_m1_n1_m2_n2)
+    {
+        const auto M0 = c_desc_m0_n0_m1_n1_m2_n2.GetLength(I0);
+        const auto N0 = c_desc_m0_n0_m1_n1_m2_n2.GetLength(I1);
+        const auto M1 = c_desc_m0_n0_m1_n1_m2_n2.GetLength(I2);
+        const auto N1 = c_desc_m0_n0_m1_n1_m2_n2.GetLength(I3);
+
+        return transform_tensor_descriptor(
+            c_desc_m0_n0_m1_n1_m2_n2,
+            make_tuple(make_pass_through_transform(M0),
+                       make_pass_through_transform(N0),
+                       make_pass_through_transform(M1),
+                       make_pass_through_transform(N1),
+                       make_unmerge_transform(make_tuple(Number<smfmac_instr.num_groups_per_blk>{},
+                                                         Number<smfmac_instr.num_input_blks>{},
+                                                         Number<smfmac_instr.group_size>{})),
+                       make_pass_through_transform(Number<smfmac_instr.num_threads_per_blk>{})),
+            make_tuple(Sequence<0>{},
+                       Sequence<1>{},
+                       Sequence<2>{},
+                       Sequence<3>{},
+                       Sequence<4>{},
+                       Sequence<5>{}),
+            make_tuple(Sequence<0>{},
+                       Sequence<1>{},
+                       Sequence<2>{},
+                       Sequence<3>{},
+                       Sequence<4, 5, 6>{},
+                       Sequence<7>{}));
+    }
+
+    template <typename CDesc_G_M0_N0_M1_N1_M2_N2>
+    __host__ __device__ static constexpr auto MakeCDescriptor_G_M0_N0_M1_N1_M2_M3_M4_N2(
+        const CDesc_G_M0_N0_M1_N1_M2_N2& c_desc_g_m0_n0_m1_n1_m2_n2)
+    {
+        const auto G  = c_desc_g_m0_n0_m1_n1_m2_n2.GetLength(I0);
+        const auto M0 = c_desc_g_m0_n0_m1_n1_m2_n2.GetLength(I1);
+        const auto N0 = c_desc_g_m0_n0_m1_n1_m2_n2.GetLength(I2);
+        const auto M1 = c_desc_g_m0_n0_m1_n1_m2_n2.GetLength(I3);
+        const auto N1 = c_desc_g_m0_n0_m1_n1_m2_n2.GetLength(I4);
+
+        return transform_tensor_descriptor(
+            c_desc_g_m0_n0_m1_n1_m2_n2,
+            make_tuple(make_pass_through_transform(G),
+                       make_pass_through_transform(M0),
+                       make_pass_through_transform(N0),
+                       make_pass_through_transform(M1),
+                       make_pass_through_transform(N1),
+                       make_unmerge_transform(make_tuple(smfmac_instr.num_groups_per_blk,
+                                                         smfmac_instr.num_input_blks,
+                                                         smfmac_instr.group_size)),
+                       make_pass_through_transform(smfmac_instr.num_threads_per_blk)),
+            make_tuple(Sequence<0>{},
+                       Sequence<1>{},
+                       Sequence<2>{},
+                       Sequence<3>{},
+                       Sequence<4>{},
+                       Sequence<5>{},
+                       Sequence<6>{}),
+            make_tuple(Sequence<0>{},
+                       Sequence<1>{},
+                       Sequence<2>{},
+                       Sequence<3>{},
+                       Sequence<4>{},
+                       Sequence<5, 6, 7>{},
+                       Sequence<8>{}));
+    }
+
+    __device__ static constexpr index_t GetRegSizePerXdlops()
+    {
+        return MPerXdlops * NPerXdlops / smfmac_instr.wave_size;
+    }
+
+    __device__ static constexpr index_t GetWaveSize() { return smfmac_instr.wave_size; }
+
+    template <class FloatA, class FloatB, class Idx, class FloatC>
+    __device__ void
+    Run(const FloatA& p_a_wave, const FloatB& p_b_wave, const Idx& idx, FloatC& p_c_thread) const
+    {
+        static_assert(is_same<base_type, half_t>::value || is_same<base_type, bhalf_t>::value,
+                      "base base_type must be half or bfloat16!");
+
+        static_for<0, KPack / smfmac_instr.k_per_blk, 1>{}([&](auto k) {
+            smfmac_instr.template run<MPerXdlops, NPerXdlops>(
+                p_a_wave[k], p_b_wave[k], idx[k], p_c_thread);
+        });
+    }
+
+    __device__ static auto GetLaneId() { return get_thread_local_1d_id() % smfmac_instr.wave_size; }
+
+    __device__ static auto GetBlkIdx()
+    {
+        const auto laneId = GetLaneId();
+
+        constexpr auto threadidx_to_blk_idx_adaptor = make_single_stage_tensor_adaptor(
+            make_tuple(make_merge_transform(
+                make_tuple(1, smfmac_instr.num_input_blks, smfmac_instr.num_threads_per_blk))),
+            make_tuple(Sequence<0, 1, 2>{}),
+            make_tuple(Sequence<0>{}));
+
+        const auto blk_idx =
+            threadidx_to_blk_idx_adaptor.CalculateBottomIndex(make_multi_index(laneId));
+
+        const auto blk_id = blk_idx[I1];
+        const auto blk_td = blk_idx[I2];
+
+        return make_tuple(blk_id, blk_td);
+    }
+
+    __host__ __device__ static auto CalculateAThreadOriginDataIndex()
+    {
+        const auto laneId  = GetLaneId();
+        const auto blk_idx = GetBlkIdx();
+
+        const auto blk_id = blk_idx[I0];
+        const auto blk_td = blk_idx[I1];
+
+        if constexpr(smfmac_instr.is_k_reduction)
+        {
+            return make_tuple(blk_id, blk_td);
+        }
+        else
+        {
+            return make_tuple(0, laneId);
+        }
+    }
+
+    __host__ __device__ static auto CalculateBThreadOriginDataIndex()
+    {
+        const auto laneId  = GetLaneId();
+        const auto blk_idx = GetBlkIdx();
+
+        const auto blk_id = blk_idx[I0];
+        const auto blk_td = blk_idx[I1];
+
+        if constexpr(smfmac_instr.is_k_reduction)
+        {
+            return make_tuple(blk_id, blk_td);
+        }
+        else
+        {
+            return make_tuple(0, laneId);
+        }
+    }
+
+    __device__ static CIndex GetBeginOfThreadBlk(index_t xdlops_i, index_t blk_i)
+    {
+        const auto blk_idx = GetBlkIdx();
+
+        const auto blk_id = blk_idx[I0];
+        const auto blk_td = blk_idx[I1];
+
+        index_t n_offset = blk_i * smfmac_instr.n_per_blk + blk_td;
+        index_t m_offset = xdlops_i * smfmac_instr.m_per_blk + blk_id * smfmac_instr.group_size;
+
+        return CIndex{m_offset, n_offset};
+    }
+
+    __device__ static CIndex4D GetBeginOfThreadBlk4D(index_t /* xdlops_i */, index_t /* blk_i */)
+    {
+        const auto blk_idx = GetBlkIdx();
+
+        const auto blk_id = blk_idx[I0];
+        const auto blk_td = blk_idx[I1];
+
+        return CIndex4D{I0, blk_id, I0, blk_td};
+    }
+
+    static constexpr auto smfmac =
+        SmfmacSelector<base_type, MPerXdlops, NPerXdlops, additional_type>{};
+
+    static constexpr auto smfmac_instr = smfmac.selected_smfmac;
+
+    static constexpr auto KPerXdlops  = smfmac.GetKPerXdlops();
+    static constexpr auto K1PerXdlops = smfmac.GetK1PerXdlops();
+    static constexpr auto K0PerXdlops = KPerXdlops / K1PerXdlops;
+
+    __host__ __device__ static constexpr auto GetCM0M1M2NThreadBlkLengths()
+    {
+        return make_tuple(
+            Number<smfmac_instr.num_groups_per_blk>{}, I1, Number<smfmac_instr.group_size>{}, I1);
+    }
+};
+
+} // namespace ck

include/ck_tile/core/arch/amd_buffer_addressing.hpp

@@ -54,233 +54,318 @@ template<> struct buffer_load_trait<4 , thread_buffer<bf16_t, 2>> { using payloa
 } // namespace impl
 
 // TODO: glc/slc/...
-template <index_t bytes>
+template <index_t bytes, bool pre_nop = false>
 struct buffer_load;
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wundefined-reinterpret-cast"
 // TODO: strict aliasing rule seems fail when reinterpret_cast between vector type
 // (exp_vector_type(xxx))
-template <>
-struct buffer_load<16>
+template <bool pre_nop>
+struct buffer_load<16, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t /*flag*/ = 0)
+                                   index_t /*flag*/       = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 16);
         using mbuf_t = typename impl::buffer_load_trait<16, T>::payload_t;
-        asm volatile("buffer_load_dwordx4 %0, %1, %2, %3 offen offset:%4"
-                     : "+v"(reinterpret_cast<mbuf_t&>(value))
-                     : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-                     : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "buffer_load_dwordx4 %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
+        else
+            asm volatile("buffer_load_dwordx4 %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load<8>
+template <bool pre_nop>
+struct buffer_load<8, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t /*flag*/ = 0)
+                                   index_t /*flag*/       = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 8);
         using mbuf_t = typename impl::buffer_load_trait<8, T>::payload_t;
-        asm volatile("buffer_load_dwordx2 %0, %1, %2, %3 offen offset:%4"
-                     : "+v"(reinterpret_cast<mbuf_t&>(value))
-                     : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-                     : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "buffer_load_dwordx2 %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
+        else
+            asm volatile("buffer_load_dwordx2 %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load<4>
+template <bool pre_nop>
+struct buffer_load<4, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t /*flag*/ = 0)
+                                   index_t /*flag*/       = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 4);
         using mbuf_t = typename impl::buffer_load_trait<4, T>::payload_t;
-        asm volatile("buffer_load_dword %0, %1, %2, %3 offen offset:%4"
-                     : "+v"(reinterpret_cast<mbuf_t&>(value))
-                     : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-                     : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "buffer_load_dword %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
+        else
+            asm volatile("buffer_load_dword %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load<2>
+template <bool pre_nop>
+struct buffer_load<2, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t /*flag*/ = 0)
+                                   index_t /*flag*/       = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 4); // subdword is buggy, use dword buf and convert manually
         using mbuf_t = typename impl::buffer_load_trait<2, T>::payload_t;
-        asm volatile("buffer_load_ushort %0, %1, %2, %3 offen offset:%4"
-                     : "+v"(reinterpret_cast<mbuf_t&>(value))
-                     : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-                     : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "buffer_load_ushort %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
+        else
+            asm volatile("buffer_load_ushort %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load<1>
+template <bool pre_nop>
+struct buffer_load<1, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t /*flag*/ = 0)
+                                   index_t /*flag*/       = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 4);
         using mbuf_t = typename impl::buffer_load_trait<1, T>::payload_t;
-        asm volatile("buffer_load_ubyte %0, %1, %2, %3 offen offset:%4"
-                     : "+v"(reinterpret_cast<mbuf_t&>(value))
-                     : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-                     : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "buffer_load_ubyte %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
+        else
+            asm volatile("buffer_load_ubyte %0, %1, %2, 0 offen offset:%3"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset)
+                         : "memory");
     }
 };
 
-template <index_t bytes>
+template <index_t bytes, bool pre_nop = false>
 struct buffer_load_if;
 
-template <>
-struct buffer_load_if<16>
+template <bool pre_nop>
+struct buffer_load_if<16, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t flag = 0)
+                                   index_t flag           = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 16);
         auto saved_exec = __builtin_amdgcn_read_exec();
         using mbuf_t    = typename impl::buffer_load_trait<16, T>::payload_t;
         static_assert(sizeof(mbuf_t) == sizeof(T));
-        asm volatile(
-            "v_cmpx_le_u32 exec, 1, %5\n"
-            "buffer_load_dwordx4 %0, %1, %2, %3 offen offset:%4\n"
-            "s_mov_b64 exec %6"
-            : "+v"(reinterpret_cast<mbuf_t&>(value))
-            : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset), "v"(flag), "s"(saved_exec)
-            : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_dwordx4 %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
+        else
+            asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_dwordx4 %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load_if<8>
+template <bool pre_nop>
+struct buffer_load_if<8, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t flag = 0)
+                                   index_t flag           = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 8);
         auto saved_exec = __builtin_amdgcn_read_exec();
         using mbuf_t    = typename impl::buffer_load_trait<8, T>::payload_t;
-        asm volatile(
-            "v_cmpx_le_u32 exec, 1, %5\n"
-            "buffer_load_dwordx2 %0, %1, %2, %3 offen offset:%4\n"
-            "s_mov_b64 exec %6"
-            : "+v"(reinterpret_cast<mbuf_t&>(value))
-            : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset), "v"(flag), "s"(saved_exec)
-            : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_dwordx2 %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
+        else
+            asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_dwordx2 %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load_if<4>
+template <bool pre_nop>
+struct buffer_load_if<4, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t flag = 0)
+                                   index_t flag           = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 4);
         auto saved_exec = __builtin_amdgcn_read_exec();
         using mbuf_t    = typename impl::buffer_load_trait<4, T>::payload_t;
-        asm volatile(
-            "v_cmpx_le_u32 exec, 1, %5\n"
-            "buffer_load_dword %0, %1, %2, %3 offen offset:%4\n"
-            "s_mov_b64 exec %6"
-            : "+v"(reinterpret_cast<mbuf_t&>(value))
-            : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset), "v"(flag), "s"(saved_exec)
-            : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_dword %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
+        else
+            asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_dword %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load_if<2>
+template <bool pre_nop>
+struct buffer_load_if<2, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t flag = 0)
+                                   index_t flag           = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 4);
         auto saved_exec = __builtin_amdgcn_read_exec();
         using mbuf_t    = typename impl::buffer_load_trait<2, T>::payload_t;
-        asm volatile(
-            "v_cmpx_le_u32 exec, 1, %5\n"
-            "buffer_load_ushort %0, %1, %2, %3 offen offset:%4\n"
-            "s_mov_b64 exec %6"
-            : "+v"(reinterpret_cast<mbuf_t&>(value))
-            : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset), "v"(flag), "s"(saved_exec)
-            : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_ushort %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
+        else
+            asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_ushort %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
     }
 };
 
-template <>
-struct buffer_load_if<1>
+template <bool pre_nop>
+struct buffer_load_if<1, pre_nop>
 {
     template <typename T>
     CK_TILE_DEVICE void operator()(T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
-                                   index_t flag = 0)
+                                   index_t flag           = 0,
+                                   bool_constant<pre_nop> = {})
     {
         static_assert(sizeof(T) == 4);
         auto saved_exec = __builtin_amdgcn_read_exec();
         using mbuf_t    = typename impl::buffer_load_trait<1, T>::payload_t;
-        asm volatile(
-            "v_cmpx_le_u32 exec, 1, %5\n"
-            "buffer_load_ubyte %0, %1, %2, %3 offen offset:%4\n"
-            "s_mov_b64 exec %6"
-            : "+v"(reinterpret_cast<mbuf_t&>(value))
-            : "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset), "v"(flag), "s"(saved_exec)
-            : "memory");
+        if constexpr(pre_nop)
+            asm volatile("s_nop 4\n"
+                         "v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_ubyte %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
+        else
+            asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                         "buffer_load_ubyte %0, %1, %2, 0 offen offset:%3\n"
+                         "s_mov_b64 exec %5"
+                         : "+v"(reinterpret_cast<mbuf_t&>(value))
+                         : "v"(v_offset), "s"(res), "n"(i_offset), "v"(flag), "s"(saved_exec)
+                         : "memory");
     }
 };
 #pragma clang diagnostic pop // "-Wundefined-reinterpret-cast"
@@ -294,17 +379,16 @@ struct buffer_store<16>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t /*flag*/ = 1)
     {
         static_assert(sizeof(T) == 16);
         using mbuf_t = fp32x4_t;
-        asm volatile(
-            "buffer_store_dwordx4 %0, %1, %2, %3 offen offset:%4"
-            :
-            : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-            : "memory");
+        asm volatile("buffer_store_dwordx4 %0, %1, %2, 0 offen offset:%3"
+                     :
+                     : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "n"(i_offset)
+                     : "memory");
     }
 };
 
@@ -315,17 +399,16 @@ struct buffer_store<8>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t /*flag*/ = 1)
     {
         static_assert(sizeof(T) == 8);
         using mbuf_t = fp32x2_t;
-        asm volatile(
-            "buffer_store_dwordx2 %0, %1, %2, %3 offen offset:%4"
-            :
-            : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-            : "memory");
+        asm volatile("buffer_store_dwordx2 %0, %1, %2, 0 offen offset:%3"
+                     :
+                     : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "n"(i_offset)
+                     : "memory");
     }
 };
 
@@ -336,17 +419,16 @@ struct buffer_store<4>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t /*flag*/ = 1)
     {
         static_assert(sizeof(T) == 4);
         using mbuf_t = float;
-        asm volatile(
-            "buffer_store_dword %0, %1, %2, %3 offen offset:%4"
-            :
-            : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-            : "memory");
+        asm volatile("buffer_store_dword %0, %1, %2, 0 offen offset:%3"
+                     :
+                     : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "n"(i_offset)
+                     : "memory");
     }
 };
 
@@ -357,17 +439,16 @@ struct buffer_store<2>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t /*flag*/ = 1)
     {
         static_assert(sizeof(T) == 2);
         using mbuf_t = short;
-        asm volatile(
-            "buffer_store_short %0, %1, %2, %3 offen offset:%4"
-            :
-            : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-            : "memory");
+        asm volatile("buffer_store_short %0, %1, %2, 0 offen offset:%3"
+                     :
+                     : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "n"(i_offset)
+                     : "memory");
     }
 };
 
@@ -378,17 +459,16 @@ struct buffer_store<1>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t /*flag*/ = 1)
     {
         static_assert(sizeof(T) == 4);
         using mbuf_t = float;
-        asm volatile(
-            "buffer_store_byte %0, %1, %2, %3 offen offset:%4"
-            :
-            : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "s"(s_offset), "n"(i_offset)
-            : "memory");
+        asm volatile("buffer_store_byte %0, %1, %2, 0 offen offset:%3"
+                     :
+                     : "v"(bit_cast<mbuf_t>(value)), "v"(v_offset), "s"(res), "n"(i_offset)
+                     : "memory");
     }
 };
 
@@ -402,21 +482,20 @@ struct buffer_store_if<16>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t flag = 1)
     {
         static_assert(sizeof(T) == 16);
         auto save_exec = __builtin_amdgcn_read_exec();
         using mbuf_t   = fp32x4_t;
-        asm volatile("v_cmpx_le_u32 exec, 1, %5\n"
-                     "buffer_store_dwordx4 %0, %1, %2, %3 offen offset:%4\n"
-                     "s_mov_b64 exec %6"
+        asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                     "buffer_store_dwordx4 %0, %1, %2, 0 offen offset:%3\n"
+                     "s_mov_b64 exec %5"
                      :
                      : "v"(bit_cast<mbuf_t>(value)),
                        "v"(v_offset),
                        "s"(res),
-                       "s"(s_offset),
                        "n"(i_offset),
                        "v"(flag),
                        "s"(save_exec)
@@ -431,7 +510,7 @@ struct buffer_store_if<8>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t flag = 1)
     {
@@ -439,14 +518,13 @@ struct buffer_store_if<8>
         auto save_exec = __builtin_amdgcn_read_exec();
         // TODO: ugly. rocm-6.0/6.1 seems neet bit_cast to same base type to avoid scratch
         using mbuf_t = ext_vector_t<typename T::value_type, T::size()>;
-        asm volatile("v_cmpx_le_u32 exec, 1, %5\n"
-                     "buffer_store_dwordx2 %0, %1, %2, %3 offen offset:%4\n"
-                     "s_mov_b64 exec %6"
+        asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                     "buffer_store_dwordx2 %0, %1, %2, 0 offen offset:%3\n"
+                     "s_mov_b64 exec %5"
                      :
                      : "v"(bit_cast<mbuf_t>(value)),
                        "v"(v_offset),
                        "s"(res),
-                       "s"(s_offset),
                        "n"(i_offset),
                        "v"(flag),
                        "s"(save_exec)
@@ -461,21 +539,20 @@ struct buffer_store_if<4>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t flag = 1)
     {
         static_assert(sizeof(T) == 4);
         auto save_exec = __builtin_amdgcn_read_exec();
         using mbuf_t   = float;
-        asm volatile("v_cmpx_le_u32 exec, 1, %5\n"
-                     "buffer_store_dword %0, %1, %2, %3 offen offset:%4\n"
-                     "s_mov_b64 exec %6"
+        asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                     "buffer_store_dword %0, %1, %2, 0 offen offset:%3\n"
+                     "s_mov_b64 exec %5"
                      :
                      : "v"(bit_cast<mbuf_t>(value)),
                        "v"(v_offset),
                        "s"(res),
-                       "s"(s_offset),
                        "n"(i_offset),
                        "v"(flag),
                        "s"(save_exec)
@@ -490,21 +567,20 @@ struct buffer_store_if<2>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t flag = 1)
     {
         static_assert(sizeof(T) == 2);
         auto save_exec = __builtin_amdgcn_read_exec();
         using mbuf_t   = short;
-        asm volatile("v_cmpx_le_u32 exec, 1, %5\n"
-                     "buffer_store_short %0, %1, %2, %3 offen offset:%4\n"
-                     "s_mov_b64 exec %6"
+        asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                     "buffer_store_short %0, %1, %2, 0 offen offset:%3\n"
+                     "s_mov_b64 exec %5"
                      :
                      : "v"(bit_cast<mbuf_t>(value)),
                        "v"(v_offset),
                        "s"(res),
-                       "s"(s_offset),
                        "n"(i_offset),
                        "v"(flag),
                        "s"(save_exec)
@@ -519,21 +595,20 @@ struct buffer_store_if<1>
     CK_TILE_DEVICE void operator()(const T& value,
                                    int32x4_t res /*buffer resource*/,
                                    index_t v_offset,
-                                   index_t s_offset,
+                                   index_t /*s_offset*/,
                                    index_t i_offset /*max 0xFFF*/,
                                    index_t flag = 1)
     {
         static_assert(sizeof(T) == 4);
         auto save_exec = __builtin_amdgcn_read_exec();
         using mbuf_t   = float;
-        asm volatile("v_cmpx_le_u32 exec, 1, %5\n"
-                     "buffer_store_byte %0, %1, %2, %3 offen offset:%4\n"
-                     "s_mov_b64 exec %6"
+        asm volatile("v_cmpx_le_u32 exec, 1, %4\n"
+                     "buffer_store_byte %0, %1, %2, 0 offen offset:%3\n"
+                     "s_mov_b64 exec %5"
                      :
                      : "v"(bit_cast<mbuf_t>(value)),
                        "v"(v_offset),
                        "s"(res),
-                       "s"(s_offset),
                        "n"(i_offset),
                        "v"(flag),
                        "s"(save_exec)
@@ -901,17 +976,26 @@ llvm_amdgcn_raw_buffer_atomic_max_fp64(double vdata,
                                        int soffset,    // dst_wave_addr_offset
                                        int glc_slc) __asm("llvm.amdgcn.raw.buffer.atomic.fmax.f64");
 
-CK_TILE_DEVICE void async_buffer_load_dword(void* smem,
-                                            int32x4_t rsrc,
-                                            index_t voffset,
-                                            index_t soffset,
-                                            index_t ioffset /*max 0xFFF*/,
-                                            index_t /*flag*/ = 0)
+template <bool pre_nop = false>
+CK_TILE_DEVICE void async_buffer_load_dword_v(void* smem,
+                                              int32x4_t rsrc,
+                                              index_t voffset,
+                                              index_t /*soffset*/,
+                                              index_t ioffset /*max 0xFFF*/,
+                                              index_t /*flag*/       = 0,
+                                              bool_constant<pre_nop> = {})
 {
-    asm volatile("buffer_load_dword %1, %2, %3 offen offset:%4 lds"
-                 : "=r"(smem) /*dummy dependency for smem*/
-                 : "v"(voffset), "s"(rsrc), "s"(soffset), "n"(ioffset)
-                 : "memory");
+    if constexpr(pre_nop)
+        asm volatile("s_nop 4\n"
+                     "buffer_load_dword %1, %2, 0 offen offset:%3 lds"
+                     : "=r"(smem) /*dummy dependency for smem*/
+                     : "v"(voffset), "s"(rsrc), "n"(ioffset)
+                     : "memory");
+    else
+        asm volatile("buffer_load_dword %1, %2, 0 offen offset:%3 lds"
+                     : "=r"(smem) /*dummy dependency for smem*/
+                     : "v"(voffset), "s"(rsrc), "n"(ioffset)
+                     : "memory");
 }
 
 CK_TILE_DEVICE void async_buffer_load_fence(index_t cnt = 0)
@@ -1223,12 +1307,14 @@ CK_TILE_DEVICE thread_buffer<T, N> amd_buffer_load_impl(int32x4_t src_wave_buffe
 template <typename T,
           index_t N,
           amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default,
-          bool oob_conditional_check          = true>
+          bool oob_conditional_check          = true,
+          bool pre_nop                        = false>
 CK_TILE_DEVICE void amd_buffer_load_raw_impl(thread_buffer<T, N>& dst,
                                              int32x4_t src_wave_buffer_resource,
                                              index_t src_thread_addr_offset,
                                              index_t src_wave_addr_offset,
-                                             index_t flag = 0)
+                                             index_t flag           = 0,
+                                             bool_constant<pre_nop> = {})
 {
     constexpr index_t bytes = sizeof(T) * N;
     static_assert(bytes == 1 || bytes == 2 || bytes == 4 || bytes == 8 || bytes == 16,
@@ -1237,32 +1323,46 @@ CK_TILE_DEVICE void amd_buffer_load_raw_impl(thread_buffer<T, N>& dst,
     using type = thread_buffer<T, N>;
     if constexpr(oob_conditional_check)
     {
-        buffer_load_if<sizeof(type)>{}(
-            dst, src_wave_buffer_resource, src_thread_addr_offset, src_wave_addr_offset, 0, flag);
+        buffer_load_if<sizeof(type), pre_nop>{}(dst,
+                                                src_wave_buffer_resource,
+                                                src_thread_addr_offset,
+                                                src_wave_addr_offset,
+                                                0,
+                                                flag,
+                                                bool_constant<pre_nop>{});
     }
     else
     {
-        buffer_load<sizeof(type)>{}(
-            dst, src_wave_buffer_resource, src_thread_addr_offset, src_wave_addr_offset, 0, flag);
+        buffer_load<sizeof(type), pre_nop>{}(dst,
+                                             src_wave_buffer_resource,
+                                             src_thread_addr_offset,
+                                             src_wave_addr_offset,
+                                             0,
+                                             flag,
+                                             bool_constant<pre_nop>{});
     }
 }
 
 template <typename T,
           index_t N,
-          amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default>
+          amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default,
+          bool pre_nop                        = false>
 CK_TILE_DEVICE void amd_async_buffer_load_impl(T* smem,
                                                int32x4_t src_wave_buffer_resource,
                                                index_t src_thread_addr_offset,
                                                index_t src_wave_addr_offset,
-                                               index_t src_immediate_addr_offset = 0)
+                                               index_t src_immediate_addr_offset = 0,
+                                               bool_constant<pre_nop>            = {})
 {
     static_assert(sizeof(T) * N == 4, "wrong! not implemented vector size");
 
-    async_buffer_load_dword(smem,
-                            src_wave_buffer_resource,
-                            src_thread_addr_offset,
-                            src_wave_addr_offset,
-                            src_immediate_addr_offset);
+    async_buffer_load_dword_v(smem,
+                              src_wave_buffer_resource,
+                              src_thread_addr_offset,
+                              src_wave_addr_offset,
+                              src_immediate_addr_offset,
+                              0,
+                              bool_constant<pre_nop>{});
 }
 
 template <index_t N,
@@ -1909,20 +2009,50 @@ amd_buffer_load_invalid_element_return_customized_value(const T* p_src_wave,
 template <typename T,
           index_t N,
           amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default,
-          bool oob_conditional_check          = true>
+          bool oob_conditional_check          = true,
+          bool pre_nop                        = false>
 CK_TILE_DEVICE void amd_buffer_load_raw(thread_buffer<T, N>& dst,
                                         const T* p_src_wave,
                                         index_t src_thread_element_offset,
                                         index_t src_element_space_size,
-                                        index_t is_valid_element = 0)
+                                        index_t is_valid_element = 0,
+                                        bool_constant<pre_nop>   = {})
 {
     const int32x4_t src_wave_buffer_resource =
         make_wave_buffer_resource(p_src_wave, src_element_space_size * sizeof(T));
 
     index_t src_thread_addr_offset = src_thread_element_offset * sizeof(T);
 
-    amd_buffer_load_raw_impl<T, N, coherence, oob_conditional_check>(
-        dst, src_wave_buffer_resource, src_thread_addr_offset, 0, is_valid_element);
+    amd_buffer_load_raw_impl<T, N, coherence, oob_conditional_check, pre_nop>(
+        dst,
+        src_wave_buffer_resource,
+        src_thread_addr_offset,
+        0,
+        is_valid_element,
+        bool_constant<pre_nop>{});
+}
+
+// This version support buffer resource as input arg
+template <typename T,
+          index_t N,
+          amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default,
+          bool oob_conditional_check          = true,
+          bool pre_nop                        = false>
+CK_TILE_DEVICE void amd_buffer_load_raw(thread_buffer<T, N>& dst,
+                                        const int32x4_t src_wave_buffer_resource,
+                                        index_t src_thread_element_offset,
+                                        index_t is_valid_element = 0,
+                                        bool_constant<pre_nop>   = {})
+{
+    index_t src_thread_addr_offset = src_thread_element_offset * sizeof(T);
+
+    amd_buffer_load_raw_impl<T, N, coherence, oob_conditional_check, pre_nop>(
+        dst,
+        src_wave_buffer_resource,
+        src_thread_addr_offset,
+        0,
+        is_valid_element,
+        bool_constant<pre_nop>{});
 }
 
 // unfortunately async copy can not make sure invalid data is zero inside LDS
@@ -1931,11 +2061,13 @@ CK_TILE_DEVICE void amd_buffer_load_raw(thread_buffer<T, N>& dst,
 // buffer_load OOB still working.
 template <typename T,
           index_t N,
-          amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default>
-CK_TILE_DEVICE void amd_async_buffer_load_with_oob(T* smem,
-                                                   const T* p_src_wave,
-                                                   index_t src_thread_element_offset,
-                                                   index_t src_element_space_size)
+          amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default,
+          bool pre_nop                        = false>
+CK_TILE_DEVICE void amd_async_buffer_load_with_oob_raw(T* smem,
+                                                       const T* p_src_wave,
+                                                       index_t src_thread_element_offset,
+                                                       index_t src_element_space_size,
+                                                       bool_constant<pre_nop> = {})
 {
     const int32x4_t src_wave_buffer_resource =
         make_wave_buffer_resource(p_src_wave, src_element_space_size * sizeof(T));
@@ -1943,7 +2075,23 @@ CK_TILE_DEVICE void amd_async_buffer_load_with_oob(T* smem,
     index_t src_thread_addr_offset = src_thread_element_offset * sizeof(T);
 
     amd_async_buffer_load_impl<T, N, coherence>(
-        smem, src_wave_buffer_resource, src_thread_addr_offset, 0, 0);
+        smem, src_wave_buffer_resource, src_thread_addr_offset, 0, 0, bool_constant<pre_nop>{});
+}
+
+// This version support buffer resource as input arg
+template <typename T,
+          index_t N,
+          amd_buffer_coherence_enum coherence = amd_buffer_coherence_enum::coherence_default,
+          bool pre_nop                        = false>
+CK_TILE_DEVICE void amd_async_buffer_load_with_oob_raw(T* smem,
+                                                       const int32x4_t src_wave_buffer_resource,
+                                                       index_t src_thread_element_offset,
+                                                       bool_constant<pre_nop> = {})
+{
+    index_t src_thread_addr_offset = src_thread_element_offset * sizeof(T);
+
+    amd_async_buffer_load_impl<T, N, coherence>(
+        smem, src_wave_buffer_resource, src_thread_addr_offset, 0, 0, bool_constant<pre_nop>{});
 }
 
 // buffer_store requires:

include/ck_tile/core/arch/arch.hpp

@@ -82,14 +82,12 @@ CK_TILE_DEVICE void block_sync_lds_direct_load()
     " ::);
 }
 
-CK_TILE_DEVICE void s_nop()
+CK_TILE_DEVICE void s_nop(index_t cnt = 0)
 {
 #if 1
-    asm volatile("\
-    s_nop 0 \n \
-    " ::);
+    asm volatile("s_nop %0" : : "n"(cnt) :);
 #else
-    __builtin_amdgcn_sched_barrier(0);
+    __builtin_amdgcn_sched_barrier(cnt);
 #endif
 }
 

include/ck_tile/core/config.hpp

@@ -21,6 +21,7 @@
 #define __gfx12__
 #endif
 
+#include "hip/hip_version.h"
 #ifndef CK_TILE_DONT_USE_HIP_RUNTIME_HEADERS
 #include "hip/hip_runtime.h"
 #include "hip/hip_fp16.h"
@@ -147,6 +148,14 @@
 #define CK_TILE_WORKAROUND_SWDEV_XXXXXX_INT8_DS_WRITE_ISSUE 1
 #endif
 
+#ifndef CK_TILE_WORKAROUND_ROCM_6_1_SCRATCH_MEMORY_ISSUE
+#if HIP_VERSION_MAJOR == 6 && HIP_VERSION_MINOR == 1 && HIP_VERSION_PATCH >= 40091
+#define CK_TILE_WORKAROUND_ROCM_6_1_SCRATCH_MEMORY_ISSUE 1
+#else
+#define CK_TILE_WORKAROUND_ROCM_6_1_SCRATCH_MEMORY_ISSUE 0
+#endif
+#endif
+
 #ifndef CK_TILE_DEBUG_LOG
 #define CK_TILE_DEBUG_LOG 0
 #endif

include/ck_tile/core/tensor/buffer_view.hpp

@@ -69,6 +69,8 @@ struct buffer_view<address_space_enum::generic,
     {
     }
 
+    CK_TILE_HOST_DEVICE void init_raw() {}
+
     CK_TILE_DEVICE static constexpr address_space_enum get_address_space()
     {
         return address_space_enum::generic;
@@ -224,25 +226,36 @@ struct buffer_view<address_space_enum::global,
 
     T* p_data_ = nullptr;
     BufferSizeType buffer_size_;
+    int32x4_t cached_buf_res_;
     remove_cvref_t<T> invalid_element_value_ = T{0};
 
     CK_TILE_HOST_DEVICE constexpr buffer_view()
-        : p_data_{}, buffer_size_{}, invalid_element_value_{}
+        : p_data_{}, buffer_size_{}, cached_buf_res_{0}, invalid_element_value_{}
     {
     }
 
     CK_TILE_HOST_DEVICE constexpr buffer_view(T* p_data, BufferSizeType buffer_size)
-        : p_data_{p_data}, buffer_size_{buffer_size}, invalid_element_value_{0}
+        : p_data_{p_data}, buffer_size_{buffer_size}, cached_buf_res_{0}, invalid_element_value_{0}
     {
     }
 
     CK_TILE_HOST_DEVICE constexpr buffer_view(T* p_data,
                                               BufferSizeType buffer_size,
                                               T invalid_element_value)
-        : p_data_{p_data}, buffer_size_{buffer_size}, invalid_element_value_{invalid_element_value}
+        : p_data_{p_data},
+          buffer_size_{buffer_size},
+          cached_buf_res_{0},
+          invalid_element_value_{invalid_element_value}
     {
     }
 
+    // this is non constexpr intentially (will call some intrinsic internally)
+    // Must call for buffers that need *_raw load/store
+    CK_TILE_HOST_DEVICE void init_raw()
+    {
+        cached_buf_res_ = make_wave_buffer_resource(p_data_, buffer_size_ * sizeof(type));
+    }
+
     CK_TILE_DEVICE static constexpr address_space_enum get_address_space()
     {
         return address_space_enum::global;
@@ -333,12 +346,15 @@ struct buffer_view<address_space_enum::global,
     // i is offset of T, not X. i should be aligned to X
     template <typename X,
               bool oob_conditional_check = true,
+              bool pre_nop               = false,
               typename std::enable_if<
                   std::is_same<typename vector_traits<remove_cvref_t<X>>::scalar_type,
                                typename vector_traits<remove_cvref_t<T>>::scalar_type>::value,
                   bool>::type = false>
-    CK_TILE_DEVICE constexpr auto
-    get_raw(remove_cvref_t<X>& dst, index_t i, bool is_valid_element) const
+    CK_TILE_DEVICE constexpr auto get_raw(remove_cvref_t<X>& dst,
+                                          index_t i,
+                                          bool is_valid_element,
+                                          bool_constant<pre_nop> = {}) const
     {
         constexpr index_t scalar_per_t_vector = vector_traits<remove_cvref_t<T>>::vector_size;
 
@@ -349,18 +365,21 @@ struct buffer_view<address_space_enum::global,
 
         constexpr index_t t_per_x = scalar_per_x_vector / scalar_per_t_vector;
 
-        amd_buffer_load_raw<remove_cvref_t<T>, t_per_x, Coherence, oob_conditional_check>(
-            dst, p_data_, i, buffer_size_, is_valid_element);
+        amd_buffer_load_raw<remove_cvref_t<T>, t_per_x, Coherence, oob_conditional_check, pre_nop>(
+            dst, cached_buf_res_, i, is_valid_element, bool_constant<pre_nop>{});
     }
 
     // i is offset of T, not X. i should be aligned to X
     template <typename X,
+              bool pre_nop = false,
               typename std::enable_if<
                   std::is_same<typename vector_traits<remove_cvref_t<X>>::scalar_type,
                                typename vector_traits<remove_cvref_t<T>>::scalar_type>::value,
                   bool>::type = false>
-    CK_TILE_DEVICE constexpr auto
-    async_get(remove_cvref_t<T>* smem, index_t i, bool /*is_valid_element*/) const
+    CK_TILE_DEVICE constexpr auto async_get_raw(remove_cvref_t<T>* smem,
+                                                index_t i,
+                                                bool /*is_valid_element*/,
+                                                bool_constant<pre_nop> = {}) const
     {
         // X is vector of T
         constexpr index_t scalar_per_t_vector = vector_traits<remove_cvref_t<T>>::vector_size;
@@ -371,8 +390,8 @@ struct buffer_view<address_space_enum::global,
 
         constexpr index_t t_per_x = scalar_per_x_vector / scalar_per_t_vector;
 
-        amd_async_buffer_load_with_oob<remove_cvref_t<T>, t_per_x, Coherence>(
-            smem, p_data_, i, buffer_size_);
+        amd_async_buffer_load_with_oob_raw<remove_cvref_t<T>, t_per_x, Coherence>(
+            smem, cached_buf_res_, i, bool_constant<pre_nop>{});
     }
 
     // i is offset of T, not X. i should be aligned to X
@@ -627,6 +646,8 @@ struct buffer_view<address_space_enum::lds,
     {
     }
 
+    CK_TILE_HOST_DEVICE void init_raw() {}
+
     CK_TILE_DEVICE static constexpr address_space_enum get_address_space()
     {
         return address_space_enum::lds;
@@ -909,6 +930,8 @@ struct buffer_view<address_space_enum::vgpr,
     {
     }
 
+    CK_TILE_HOST_DEVICE void init_raw() {}
+
     CK_TILE_DEVICE static constexpr address_space_enum get_address_space()
     {
         return address_space_enum::vgpr;

include/ck_tile/core/tensor/load_tile.hpp

@@ -36,30 +36,37 @@ template <typename T,
           typename WindowLengths_,
           typename TileDistribution_,
           index_t NumCoord,
-          bool oob_conditional_check = true>
+          bool oob_conditional_check = true,
+          bool pre_nop               = false>
 CK_TILE_DEVICE auto load_tile_raw(T& tile,
                                   const tile_window_with_static_distribution<BottomTensorView_,
                                                                              WindowLengths_,
                                                                              TileDistribution_,
                                                                              NumCoord>& tile_window,
-                                  bool_constant<oob_conditional_check> = {})
+                                  bool_constant<oob_conditional_check> = {},
+                                  bool_constant<pre_nop>               = {})
 {
-    tile_window.load_raw(tile, bool_constant<oob_conditional_check>{});
+    tile_window.load_raw(tile, bool_constant<oob_conditional_check>{}, bool_constant<pre_nop>{});
 }
 
 template <typename LdsTileWindow_,
           typename BottomTensorView_,
           typename WindowLengths_,
           typename TileDistribution_,
-          index_t NumCoord>
+          index_t NumCoord,
+          bool oob_conditional_check = true,
+          bool pre_nop               = false>
 CK_TILE_DEVICE auto
 async_load_tile_raw(LdsTileWindow_&& lds_tile,
                     const tile_window_with_static_distribution<BottomTensorView_,
                                                                WindowLengths_,
                                                                TileDistribution_,
-                                                               NumCoord>& tile_window)
+                                                               NumCoord>& tile_window,
+                    bool_constant<oob_conditional_check> = {},
+                    bool_constant<pre_nop>               = {})
 {
-    return tile_window.async_load(lds_tile);
+    return tile_window.async_load_raw(
+        lds_tile, bool_constant<oob_conditional_check>{}, bool_constant<pre_nop>{});
 }
 
 CK_TILE_DEVICE auto async_load_fence(index_t cnt = 0)