adding implicit gemm v4r4

composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r3_nchw_kcyx_nkhw_lds_double_buffer.hpp

@@ -332,7 +332,7 @@ struct GridwiseConvolutionImplicitGemm_v4r3_nchw_kcyx_nkhw_lds_double_buffer
                 blockwise_wei_copy.RunLoadRegisterClipboard(p_wei_block_on_global,
                                                             p_wei_register_clipboard);
 
-#if 1
+#if 0
                 if(get_block_1d_id() == 0)
                 {
                     printf("tid (%d %d), %f %f %f %f\n",

composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw.hpp

+#ifndef CK_GRIDWISE_CONVOLUTION_IMPLICIT_GEMM_V4R4_NCHW_KCYX_NKHW_HPP
+#define CK_GRIDWISE_CONVOLUTION_IMPLICIT_GEMM_V4R4_NCHW_KCYX_NKHW_HPP
+
+#include "common_header.hpp"
+#include "ConstantTensorDescriptor.hpp"
+#include "ConstantMergedTensorDescriptor.hpp"
+#include "ConstantMatrixDescriptor.hpp"
+#include "blockwise_generic_tensor_slice_copy.hpp"
+#include "blockwise_gemm.hpp"
+#include "threadwise_generic_tensor_slice_copy.hpp"
+
+namespace ck {
+
+// B = merge(N, H, W)
+template <index_t GridSize,
+          index_t BlockSize,
+          class Float,
+          class InGlobalDesc,
+          class WeiGlobalDesc,
+          class OutGlobalDesc,
+          class ConvStrides,
+          class ConvDilations,
+          index_t BPerBlock,
+          index_t KPerBlock,
+          index_t EPerBlock,
+          index_t GemmMPerThreadSubC,
+          index_t GemmNPerThreadSubC,
+          index_t GemmMLevel0Cluster,
+          index_t GemmNLevel0Cluster,
+          index_t GemmMLevel1Cluster,
+          index_t GemmNLevel1Cluster,
+          index_t GemmKPerThreadLoop,
+          index_t GemmDataPerReadA,
+          index_t GemmDataPerReadB,
+          class InBlockCopySubLengths_E_B,
+          class InBlockCopyClusterLengths_E_B,
+          class InBlockCopyThreadClusterArrangeOrder,
+          class InBlockCopySrcAccessOrder,
+          class InBlockCopyDstAccessOrder,
+          index_t InBlockCopyDataPerAccess_B,
+          class WeiBlockCopySubLengths_E_K,
+          class WeiBlockCopyClusterLengths_E_K,
+          class WeiBlockCopyThreadClusterArrangeOrder,
+          class WeiBlockCopySrcAccessOrder,
+          class WeiBlockCopyDstAccessOrder,
+          index_t WeiBlockCopySrcDataPerRead_E,
+          index_t WeiBlockCopyDstDataPerWrite_K>
+struct GridwiseConvolutionImplicitGemm_v4r4_nchw_kcyx_nkhw
+{
+    __device__ void Run(const Float* const __restrict__ p_in_global,
+                        const Float* const __restrict__ p_wei_global,
+                        Float* const __restrict__ p_out_global) const
+    {
+        constexpr auto I0 = Number<0>{};
+        constexpr auto I1 = Number<1>{};
+        constexpr auto I2 = Number<2>{};
+        constexpr auto I3 = Number<3>{};
+        constexpr auto I5 = Number<5>{};
+
+        constexpr auto True = integral_constant<bool, true>{};
+
+        constexpr auto in_n_c_h_w_global_desc  = InGlobalDesc{};
+        constexpr auto wei_k_c_y_x_global_desc = WeiGlobalDesc{};
+        constexpr auto out_n_k_h_w_global_desc = OutGlobalDesc{};
+
+        constexpr index_t N = in_n_c_h_w_global_desc.GetLengths()[0];
+        constexpr index_t C = in_n_c_h_w_global_desc.GetLengths()[1];
+
+        constexpr index_t K  = out_n_k_h_w_global_desc.GetLengths()[1];
+        constexpr index_t Ho = out_n_k_h_w_global_desc.GetLengths()[2];
+        constexpr index_t Wo = out_n_k_h_w_global_desc.GetLengths()[3];
+
+        constexpr index_t Y = wei_k_c_y_x_global_desc.GetLengths()[2];
+        constexpr index_t X = wei_k_c_y_x_global_desc.GetLengths()[3];
+
+        constexpr index_t ConvStrideH = ConvStrides{}[0];
+        constexpr index_t ConvStrideW = ConvStrides{}[1];
+
+        constexpr index_t ConvDilationH = ConvDilations{}[0];
+        constexpr index_t ConvDilationW = ConvDilations{}[1];
+
+        constexpr index_t E = C * Y * X;
+        constexpr index_t B = N * Ho * Wo;
+
+        static_assert((X == 1 || ConvDilationW % InBlockCopyDataPerAccess_B == 0),
+                      "wrong! aligment requirement for vectorized global load of input tensor will "
+                      "be violated");
+
+        // divide block work by [K, B]
+        static_assert(K % KPerBlock == 0 && B % BPerBlock == 0 && E % EPerBlock == 0,
+                      "wrong! cannot divide work evenly among block");
+
+        constexpr index_t KBlockWork = K / KPerBlock;
+        constexpr index_t BBlockWork = B / BPerBlock;
+
+        constexpr auto block_work_desc =
+            make_ConstantTensorDescriptor_packed(Sequence<KBlockWork, BBlockWork>{});
+
+        const auto block_work_multi_id =
+            block_work_desc.GetMultiIndexFrom1dIndex(get_block_1d_id());
+
+        const index_t k_block_data_on_global = block_work_multi_id[0] * KPerBlock;
+        const index_t b_block_data_on_global = block_work_multi_id[1] * BPerBlock;
+
+        // input tensor
+        //     tensor descriptor in device memory [N, Ho, Wo]
+        constexpr auto in_n_ho_wo_global_desc =
+            in_n_c_h_w_global_desc.Extract(I0, I2, I3)
+                .StridedSlice(I1, Number<Ho>{}, Number<ConvStrideH>{})
+                .StridedSlice(I2, Number<Wo>{}, Number<ConvStrideW>{});
+
+        //     batch descritpor for device memory
+        constexpr auto in_c_y_x_global_desc =
+            in_n_c_h_w_global_desc.StridedSlice(I2, Number<Y>{}, Number<ConvDilationH>{})
+                .StridedSlice(I3, Number<X>{}, Number<ConvDilationW>{})
+                .Extract(Sequence<1, 2, 3>{});
+
+        //     merged tensor descriptor in device memory [E, B], src of blockwise copy
+        constexpr auto in_e_b_global_desc =
+            make_ConstantMergedTensorDescriptor(in_c_y_x_global_desc.Embed(in_n_ho_wo_global_desc),
+                                                Sequence<0, 1, 2>{},
+                                                Sequence<3, 4, 5>{});
+
+        //     memory layout descriptor in LDS [E, B], dst of blockwise copy
+        //     be careful of LDS alignment
+        constexpr auto in_e_b_block_desc =
+            make_ConstantTensorDescriptor_packed(Sequence<EPerBlock, BPerBlock>{});
+
+        // input blockwise copy
+        //     slice a merged tensor, reorder and copy to a normal tensor
+        //     this copy operator already has blockwise offset built-in
+        auto blockwise_in_copy =
+            BlockwiseGenericTensorSliceCopy_v2<BlockSize,
+                                               Float,
+                                               decltype(in_e_b_global_desc),
+                                               decltype(in_e_b_block_desc),
+                                               MergedTensorCoordinate<decltype(in_e_b_global_desc)>,
+                                               NormalTensorCoordinate<decltype(in_e_b_block_desc)>,
+                                               decltype(in_e_b_block_desc.GetLengths()),
+                                               InBlockCopySubLengths_E_B,
+                                               InBlockCopyClusterLengths_E_B,
+                                               InBlockCopyThreadClusterArrangeOrder>(
+                {0, b_block_data_on_global}, {0, 0});
+
+        // weight tensor
+        //     tensor descriptor in device memory, src of blockwise copy
+        constexpr auto wei_e_k_global_desc =
+            wei_k_c_y_x_global_desc.Unfold(I1, I3).ReorderGivenNew2Old(Sequence<1, 0>{});
+
+        //     tensor descriptor in LDS, dst of blockwise copy
+        //     be careful of LDS alignment
+        constexpr auto wei_e_k_block_desc = make_ConstantTensorDescriptor_aligned(
+            Sequence<EPerBlock, KPerBlock>{},
+            Number<math::lcm(WeiBlockCopyDstDataPerWrite_K, GemmDataPerReadA)>{});
+
+        // operator for blockwise copy of weight into LDS
+        //     slice a tensor, and copy it into another tensor
+        //     this copy operator already have blockwise offset built-in
+        auto blockwise_wei_copy = BlockwiseGenericTensorSliceCopy_v2<
+            BlockSize,
+            Float,
+            decltype(wei_e_k_global_desc),
+            decltype(wei_e_k_block_desc),
+            MergedTensorCoordinate<decltype(wei_e_k_global_desc)>,
+            NormalTensorCoordinate<decltype(wei_e_k_block_desc)>,
+            decltype(wei_e_k_block_desc.GetLengths()),
+            WeiBlockCopySubLengths_E_K,
+            WeiBlockCopyClusterLengths_E_K,
+            WeiBlockCopyThreadClusterArrangeOrder>({0, k_block_data_on_global}, {0, 0});
+
+        // GEMM definition
+        // c_mtx += transpose(a_mtx) * b_mtx
+        //     a_mtx[EPerBlock, KPerBlock] is in LDS
+        //     b_mtx[EPerBlocl, BPerBlock] is in LDS
+        //     c_mtx[KPerBlock, BPerBlock] is distributed among threads, and saved in
+        //     register
+        constexpr auto a_e_k_block_mtx_desc =
+            make_ConstantMatrixDescriptor_from_ConstantTensorDescriptor(wei_e_k_block_desc);
+
+        constexpr auto b_e_b_block_mtx_desc =
+            make_ConstantMatrixDescriptor_from_ConstantTensorDescriptor(in_e_b_block_desc);
+
+        // sanity check
+        static_assert(
+            KPerBlock % (GemmMPerThreadSubC * GemmMLevel0Cluster * GemmMLevel1Cluster) == 0 &&
+                BPerBlock % (GemmNPerThreadSubC * GemmNLevel0Cluster * GemmNLevel1Cluster) == 0,
+            "wrong!");
+
+        constexpr index_t GemmMRepeat =
+            KPerBlock / (GemmMPerThreadSubC * GemmMLevel0Cluster * GemmMLevel1Cluster);
+
+        constexpr index_t GemmNRepeat =
+            BPerBlock / (GemmNPerThreadSubC * GemmNLevel0Cluster * GemmNLevel1Cluster);
+
+        // c_thread_mtx definition: this is a mess
+        // TODO:: more elegent way of defining c_thread_mtx
+        constexpr auto c_k0k1_b0b1_thread_mtx_desc = make_ConstantMatrixDescriptor_packed(
+            Number<GemmMRepeat * GemmMPerThreadSubC>{}, Number<GemmNRepeat * GemmNPerThreadSubC>{});
+
+        const auto blockwise_gemm = BlockwiseGemmBlockABlockBThreadCTransANormalBNormalC_v2<
+            BlockSize,
+            decltype(a_e_k_block_mtx_desc),
+            decltype(b_e_b_block_mtx_desc),
+            decltype(c_k0k1_b0b1_thread_mtx_desc),
+            GemmMPerThreadSubC,
+            GemmNPerThreadSubC,
+            GemmMLevel0Cluster,
+            GemmNLevel0Cluster,
+            GemmMLevel1Cluster,
+            GemmNLevel1Cluster,
+            GemmKPerThreadLoop,
+            GemmDataPerReadA,
+            GemmDataPerReadB>{};
+
+        // LDS allocation for input and weight: be careful of alignment
+        constexpr index_t max_align = math::lcm(InBlockCopyDataPerAccess_B,
+                                                WeiBlockCopyDstDataPerWrite_K,
+                                                GemmDataPerReadA,
+                                                GemmDataPerReadB);
+
+        constexpr index_t in_block_space =
+            math::integer_least_multiple(in_e_b_block_desc.GetElementSpace(), max_align);
+
+        constexpr index_t wei_block_space =
+            math::integer_least_multiple(wei_e_k_block_desc.GetElementSpace(), max_align);
+
+        __shared__ Float p_in_block[in_block_space];
+        __shared__ Float p_wei_block[wei_block_space];
+
+        // register allocation for output
+        Float p_out_thread[c_k0k1_b0b1_thread_mtx_desc.GetElementSpace()];
+
+        // zero out threadwise output
+        threadwise_matrix_set_zero(c_k0k1_b0b1_thread_mtx_desc, p_out_thread);
+
+        const Float* p_wei_block_on_global = p_wei_global;
+
+        for(index_t e_block_data_begin = 0; e_block_data_begin < E; e_block_data_begin += EPerBlock)
+        {
+            blockwise_in_copy.Run(p_in_global, p_in_block);
+            blockwise_wei_copy.Run(p_wei_global, p_wei_block);
+
+            __syncthreads();
+
+            blockwise_gemm.Run(p_wei_block, p_in_block, p_out_thread);
+
+            __syncthreads();
+
+            blockwise_in_copy.MoveSrcSlicingWindow({EPerBlock, 0}, true);
+            blockwise_wei_copy.MoveSrcSlicingWindow({EPerBlock, 0}, true);
+        }
+
+        // copy output: register to global memory
+        {
+            constexpr index_t K1 = GemmMPerThreadSubC * GemmMLevel0Cluster * GemmMLevel1Cluster;
+            constexpr index_t B1 = GemmNPerThreadSubC * GemmNLevel0Cluster * GemmNLevel1Cluster;
+
+            // define tensor descriptor for threadwise copy
+            //     output global descriptor, for calculating origin of thread tensor
+            //     in global memory
+            constexpr auto out_k_b_global_desc = make_ConstantMergedTensorDescriptor(
+                out_n_k_h_w_global_desc, Sequence<1>{}, Sequence<0, 2, 3>{});
+
+            // calculate origin of thread output tensor on global memory
+            //     blockwise GEMM c matrix starting index
+            const auto c_thread_mtx_on_block =
+                blockwise_gemm.GetBeginOfThreadMatrixC(get_thread_local_1d_id());
+
+            const index_t k_thread_data_on_global =
+                k_block_data_on_global + c_thread_mtx_on_block.row;
+
+            const index_t b_thread_data_on_global =
+                b_block_data_on_global + c_thread_mtx_on_block.col;
+
+#if 0
+            //     origin of dst in device memory
+            Float* p_out_thread_on_global = p_out_global +
+                                            out_k_b_global_desc.GetOffsetFromMultiIndex(
+                                                k_thread_data_on_global, b_thread_data_on_global);
+
+            //     dst descriptor
+            constexpr auto out_k0_k1_b0_b1_global_desc =
+                out_k_b_global_desc.Fold(I1, Number<B1>{}).Fold(I0, Number<K1>{});
+
+            //     src descriptor
+            constexpr auto out_k0_k1_b0_b1_thread_desc = make_ConstantTensorDescriptor_packed(
+                Sequence<GemmMRepeat, GemmMPerThreadSubC, GemmNRepeat, GemmNPerThreadSubC>{});
+
+            const auto threadwise_out_copy =
+                ThreadwiseGenericTensorSliceCopy_v2<Float,
+                                                    decltype(out_k0_k1_b0_b1_thread_desc),
+                                                    decltype(out_k0_k1_b0_b1_global_desc),
+                                                    decltype(
+                                                        out_k0_k1_b0_b1_thread_desc.GetLengths()),
+                                                    arithmetic_sequence_gen<0, 4, 1>::type,
+                                                    1,
+                                                    1>({0, 0, 0, 0},
+                                                       {k_thread_data_on_global / K1,
+                                                        k_thread_data_on_global % K1,
+                                                        b_thread_data_on_global / B1,
+                                                        b_thread_data_on_global % B1});
+
+            threadwise_out_copy.Run(p_out_thread, p_out_thread_on_global);
+#else
+            // This is a hack, because slicing a merged dimension is not supported yet.
+            // This should be replaced with logic above, once slicing a merged dimension support
+            // become available
+            //     dst descriptor
+            constexpr auto out_k0_k1_b_global_desc =
+                make_ConstantMergedTensorDescriptor(out_n_k_h_w_global_desc.Fold(I1, Number<K1>{}),
+                                                    Sequence<1>{},
+                                                    Sequence<2>{},
+                                                    Sequence<0, 3, 4>{});
+
+            //     src descriptor
+            constexpr auto out_k0_k1_b_thread_desc = make_ConstantTensorDescriptor_packed(
+                Sequence<GemmMRepeat, GemmMPerThreadSubC, GemmNRepeat * GemmNPerThreadSubC>{});
+
+            auto threadwise_out_copy = ThreadwiseGenericTensorSliceCopy_v2<
+                Float,
+                decltype(out_k0_k1_b_thread_desc),
+                decltype(out_k0_k1_b_global_desc),
+                NormalTensorCoordinate<decltype(out_k0_k1_b_thread_desc)>,
+                MergedTensorCoordinate<decltype(out_k0_k1_b_global_desc)>,
+                Sequence<GemmMRepeat, GemmMPerThreadSubC, GemmNPerThreadSubC>>(
+                {0, 0, 0},
+                {k_thread_data_on_global / K1,
+                 k_thread_data_on_global % K1,
+                 b_thread_data_on_global});
+
+            for(index_t nrepeat = 0; nrepeat < GemmNRepeat; ++nrepeat)
+            {
+                threadwise_out_copy.Run(p_out_thread, p_out_global);
+
+                threadwise_out_copy.MoveSrcSlicingWindow({0, 0, GemmNPerThreadSubC}, true);
+                threadwise_out_copy.MoveDstSlicingWindow({0, 0, B1}, true);
+            }
+#endif
+        }
+    }
+};
+
+} // namespace ck
+#endif

composable_kernel/include/tensor_description/ConstantTensorDescriptor.hpp

@@ -49,17 +49,9 @@ struct ConstantTensorDescriptor
 
     __host__ __device__ static constexpr auto GetStrides() { return Strides{}; }
 
-    template <class IDim>
-    __host__ __device__ static constexpr auto GetLength(IDim)
-    {
-        return Lengths::Get(IDim{});
-    }
+    __host__ __device__ static constexpr auto GetLength(index_t IDim) { return Lengths{}[IDim]; }
 
-    template <class IDim>
-    __host__ __device__ static constexpr auto GetStride(IDim)
-    {
-        return Strides::Get(IDim{});
-    }
+    __host__ __device__ static constexpr auto GetStride(index_t IDim) { return Strides{}[IDim]; }
 
     struct lambda_AreDimensionsContinuous
     {

composable_kernel/include/tensor_description/tensor_coordinate.hpp

+#ifndef CK_TENSOR_COORDINATE_HPP
+#define CK_TENSOR_COORDINATE_HPP
+
+#include "common_header.hpp"
+#include "ConstantTensorDescriptor.hpp"
+#include "ConstantMergedTensorDescriptor.hpp"
+
+namespace ck {
+
+template <class TensorDesc>
+struct NormalTensorCoordinate
+{
+    using type             = NormalTensorCoordinate;
+    using tensor_desc_type = TensorDesc;
+
+    static constexpr index_t nDim = tensor_desc_type::GetNumOfDimension();
+
+    __host__ __device__ constexpr NormalTensorCoordinate(Array<index_t, nDim> tensor_index)
+        : mIndex{tensor_index}, mOffset{tensor_desc_type::GetOffsetFromMultiIndex(tensor_index)}
+    {
+    }
+
+    template <class... Xs>
+    __host__ __device__ constexpr NormalTensorCoordinate(Xs... xs)
+        : NormalTensorCoordinate(Array<index_t, nDim>{xs...})
+    {
+    }
+
+    __host__ __device__ constexpr Array<unsigned, nDim> GetIndex() const { return mIndex; }
+
+    __host__ __device__ constexpr index_t GetOffset() const { return mOffset; }
+
+    template <class IDim, bool PositiveDirection>
+    __host__ __device__ void
+    MoveOnDimension(IDim idim, index_t step_size, integral_constant<bool, PositiveDirection>)
+    {
+        if(PositiveDirection)
+        {
+            mIndex(idim) += step_size;
+            mOffset += step_size * tensor_desc_type::GetStride(idim);
+        }
+        else
+        {
+            mIndex(idim) -= step_size;
+            mOffset -= step_size * tensor_desc_type::GetStride(idim);
+        }
+    }
+
+    // T is Array or Sequence
+    template <class T>
+    __host__ __device__ type operator+=(T step_sizes)
+    {
+#if 0
+        static_assert(is_same<typename T::data_type, index_t>, "wrong!");
+#endif
+        static_assert(T::GetSize() == nDim, "wrong!");
+
+        static_for<0, nDim, 1>{}([&](auto idim) {
+            this->MoveOnDimension(idim, step_sizes[idim], integral_constant<bool, true>{});
+        });
+
+        return *this;
+    }
+
+    template <class T>
+    __host__ __device__ type operator-=(T step_sizes)
+    {
+#if 0
+        static_assert(is_same<typename T::data_type, index_t>, "wrong!");
+#endif
+        static_assert(T::GetSize() == nDim, "wrong!");
+
+        static_for<0, nDim, 1>{}([&](auto idim) {
+            this->MoveOnDimension(idim, step_sizes[idim], integral_constant<bool, false>{});
+        });
+
+        return *this;
+    }
+
+    template <class T>
+    __host__ __device__ constexpr type operator+(T step_sizes) const
+    {
+        type coord = *this;
+        coord += step_sizes;
+        return coord;
+    }
+
+    template <class T>
+    __host__ __device__ constexpr type operator-(T step_sizes) const
+    {
+        type coord = *this;
+        coord -= step_sizes;
+        return coord;
+    }
+
+    // private:
+    Array<index_t, nDim> mIndex;
+    index_t mOffset;
+};
+
+template <class TensorDesc>
+struct MergedTensorCoordinate
+{
+    using type             = MergedTensorCoordinate;
+    using tensor_desc_type = TensorDesc;
+
+    static constexpr index_t nDim = tensor_desc_type::GetNumOfDimension();
+    static constexpr index_t nOriginalDim =
+        tensor_desc_type::GetOriginalTensorDescriptor().GetNumOfDimension();
+
+    __host__ __device__ constexpr MergedTensorCoordinate(Array<index_t, nDim> tensor_index)
+        : mIndex{tensor_index},
+          mOriginalIndex{tensor_desc_type::GetOriginalMultiIndexFromMultiIndex(tensor_index)}
+    {
+        // partial offset on each dimension
+        static_for<0, nDim, 1>{}([&](auto idim) {
+            constexpr auto partial_original_dims =
+                tensor_desc_type::GetContainedOriginalDimensions(idim);
+
+            constexpr auto partial_original_desc =
+                tensor_desc_type::GetOriginalTensorDescriptor().Extract(partial_original_dims);
+
+            mPartialOffsets(idim) = partial_original_desc.GetOffsetFromMultiIndex(
+                extract_array(mOriginalIndex, partial_original_dims));
+        });
+
+        // complete offset
+        mOffset =
+            accumulate_on_array(mPartialOffsets, math::plus<index_t>{}, static_cast<index_t>(0));
+    }
+
+    template <class... Xs>
+    __host__ __device__ constexpr MergedTensorCoordinate(Xs... xs)
+        : MergedTensorCoordinate(Array<index_t, nDim>{xs...})
+    {
+    }
+
+    __host__ __device__ constexpr Array<index_t, nDim> GetIndex() const { return mIndex; }
+
+    __host__ __device__ constexpr index_t GetOffset() const { return mOffset; }
+
+    // step_size should be known at compile time
+    template <class IDim, bool PositiveDirection>
+    __host__ __device__ void
+    MoveOnDimension(IDim, index_t step_size, integral_constant<bool, PositiveDirection>)
+    {
+        constexpr auto idim = IDim{};
+
+        // update multi-index
+        if(PositiveDirection)
+        {
+            mIndex(idim) += step_size;
+        }
+        else
+        {
+            mIndex(idim) -= step_size;
+        }
+
+        // update rest
+        static_if<tensor_desc_type::ContainMultipleOriginalDimensions(idim)>{}([&](auto) {
+            constexpr auto partial_original_dims =
+                tensor_desc_type::GetContainedOriginalDimensions(idim);
+
+            constexpr index_t ndim_partial_original = partial_original_dims.GetSize();
+
+            constexpr auto partial_original_desc =
+                tensor_desc_type::GetOriginalTensorDescriptor().Extract(partial_original_dims);
+
+            const auto partial_original_step_sizes =
+                partial_original_desc.GetMultiIndexFrom1dIndex(step_size);
+
+            // update partial original multi-id
+            auto partial_original_id = extract_array(mOriginalIndex, partial_original_dims);
+
+            static_if<PositiveDirection>{}([&](auto) {
+                partial_original_id += partial_original_step_sizes;
+
+                bool carry = false;
+
+                // do carry check in reversed order, starting from lowest dimension
+                // don't check the highest dimension
+                static_for<0, ndim_partial_original, 1>{}([&](auto IReverse) {
+                    constexpr index_t i = ndim_partial_original - 1 - IReverse;
+
+                    if(carry)
+                    {
+                        ++partial_original_id(i);
+                    }
+
+                    carry = false;
+
+                    if(partial_original_id[i] >= partial_original_desc.GetLength(i))
+                    {
+                        partial_original_id(i) -= partial_original_desc.GetLength(i);
+                        carry = true;
+                    }
+                });
+            }).Else([&](auto) {
+                // shift up multi-id to avoid unsigned integer underflow during intermediate
+                // calculations. After the shift, should have new_multi_id[...] >= 1
+                partial_original_id +=
+                    partial_original_desc.GetLengths() - partial_original_step_sizes;
+
+                bool borrow = false;
+
+                // do borrow check in reversed order, starting from lowest dimension
+                // don't check the highest dimension
+                static_for<0, ndim_partial_original, 1>{}([&](auto IReverse) {
+                    constexpr index_t i = ndim_partial_original - 1 - IReverse;
+
+                    if(borrow)
+                    {
+                        --partial_original_id(i);
+                    }
+
+                    borrow = false;
+
+                    if(partial_original_id[i] < partial_original_desc.GetLength(i))
+                    {
+                        partial_original_id(i) += partial_original_desc.GetLength(i);
+                        borrow = true;
+                    }
+                });
+
+                // shift back down multi-id
+                // here, should have new_multi_id[...] >= GetLengths()
+                partial_original_id = partial_original_id - partial_original_desc.GetLengths();
+            });
+
+            // update "mOriginalIndex"
+            static_for<0, ndim_partial_original, 1>{}([&](auto I) {
+                constexpr auto idim_original = partial_original_dims[I];
+
+                mOriginalIndex(idim_original) = partial_original_id[I];
+            });
+
+            // calculate new partial offset on this merged dimension
+            const index_t old_partial_offset = mPartialOffsets[idim];
+
+            mPartialOffsets(idim) =
+                partial_original_desc.GetOffsetFromMultiIndex(partial_original_id);
+
+            // update "mThreadSrcOffset", do "+" before "-" to avoid underflow
+            mOffset = (mOffset + mPartialOffsets[idim]) - old_partial_offset;
+        }).Else([&](auto) {
+            constexpr auto idim_original =
+                tensor_desc_type::GetContainedOriginalDimensions(idim).Front();
+
+            static_if<PositiveDirection>{}([&](auto fwd) {
+                mOriginalIndex(idim_original) += step_size;
+                mPartialOffsets(idim) += step_size * fwd(tensor_desc_type{}).GetStride(idim);
+                mOffset += step_size * fwd(tensor_desc_type{}).GetStride(idim);
+            }).Else([&](auto fwd) {
+                mOriginalIndex(idim_original) -= step_size;
+                mPartialOffsets(idim) -= step_size * fwd(tensor_desc_type{}).GetStride(idim);
+                mOffset -= step_size * fwd(tensor_desc_type{}).GetStride(idim);
+            });
+        });
+    }
+
+    // T is Array or Sequence
+    template <class T>
+    __host__ __device__ type operator+=(T step_sizes)
+    {
+#if 0
+        static_assert(is_same<typename T::data_type, index_t>, "wrong!");
+#endif
+        static_assert(T::GetSize() == nDim, "wrong!");
+
+        static_for<0, nDim, 1>{}([&](auto idim) {
+            this->MoveOnDimension(idim, step_sizes[idim], integral_constant<bool, true>{});
+        });
+
+        return *this;
+    }
+
+    template <class T>
+    __host__ __device__ type operator-=(T step_sizes)
+    {
+#if 0
+        static_assert(is_same<typename T::data_type, index_t>, "wrong!");
+#endif
+        static_assert(T::GetSize() == nDim, "wrong!");
+
+        static_for<0, nDim, 1>{}([&](auto idim) {
+            this->MoveOnDimension(idim, step_sizes[idim], integral_constant<bool, false>{});
+        });
+
+        return *this;
+    }
+
+    template <class T>
+    __host__ __device__ constexpr type operator+(T step_sizes) const
+    {
+        type coord = *this;
+        coord += step_sizes;
+        return coord;
+    }
+
+    template <class T>
+    __host__ __device__ constexpr type operator-(T step_sizes) const
+    {
+        type coord = *this;
+        coord -= step_sizes;
+        return coord;
+    }
+
+    // private:
+    Array<index_t, nDim> mIndex;
+    Array<index_t, nOriginalDim> mOriginalIndex;
+    Array<index_t, nDim> mPartialOffsets; // mPartialOffsets is needed for for unsigned index type
+    index_t mOffset;
+};
+
+#if 0
+// implementation of MergedTensorCoordinate, when index_t is signed integer
+// mPartialOffsets is not needed, if index_t is signed integer type
+template<>
+struct TensorCoordinate<signed_t>
+{
+    private:
+    Array<_t, nDim> mIndex;
+    Array<_t, nOriginalDim> mOriginalIndex;
+    index_t mOffset;
+};
+#endif
+
+} // namespace ck
+#endif

composable_kernel/include/tensor_operation/blockwise_generic_tensor_slice_copy.hpp

@@ -4,6 +4,7 @@
 #include "common_header.hpp"
 #include "ConstantTensorDescriptor.hpp"
 #include "ConstantMergedTensorDescriptor.hpp"
+#include "tensor_coordinate.hpp"
 #include "threadwise_generic_tensor_slice_copy.hpp"
 
 #ifndef CK_EXPERIMENTAL_USE_MORE_COMPILE_STATIC_BLOCKWISE_GENERIC_SLICE_COPY_V1
@@ -373,6 +374,64 @@ struct BlockwiseGenericTensorSliceCopy_v1
     }
 };
 
+template <index_t BlockSize,
+          class TData,
+          class SrcDesc,
+          class DstDesc,
+          class SrcCoordinate,
+          class DstCoordinate,
+          class SliceLengths,
+          class SubLengths,
+          class DataClusterLengths,
+          class ThreadClusterArrangeOrder>
+struct BlockwiseGenericTensorSliceCopy_v2
+{
+    using ThreadwiseCopy = ThreadwiseGenericTensorSliceCopy_v2<TData,
+                                                               SrcDesc,
+                                                               DstDesc,
+                                                               SrcCoordinate,
+                                                               DstCoordinate,
+                                                               SubLengths>;
+
+    static constexpr index_t nDim = SrcDesc::GetNumOfDimension();
+
+    __device__ constexpr BlockwiseGenericTensorSliceCopy_v2(SrcCoordinate src_block_slice_origin,
+                                                            DstCoordinate dst_block_slice_origin)
+    {
+        constexpr auto thread_cluster_desc = make_ConstantTensorDescriptor_packed(
+            DataClusterLengths::ReorderGivenNew2Old(ThreadClusterArrangeOrder{}));
+
+        const auto thread_cluster_multi_id =
+            thread_cluster_desc.GetMultiIndexFrom1dIndex(get_thread_local_1d_id());
+
+        const auto data_cluster_multi_id =
+            reorder_array_given_old2new(thread_cluster_multi_id, ThreadClusterArrangeOrder{});
+
+        const auto thread_data_multi_id_begin = data_cluster_multi_id * SubLengths{};
+
+        mThreadwiseCopy.SetSrcSliceOrigin(src_block_slice_origin + thread_data_multi_id_begin);
+        mThreadwiseCopy.SetDstSliceOrigin(dst_block_slice_origin + thread_data_multi_id_begin);
+    }
+
+    __device__ void Run(const TData* p_src, TData* p_dst) const
+    {
+        mThreadwiseCopy.Run(p_src, p_dst);
+    }
+
+    __device__ void MoveSrcSlicingWindow(Array<index_t, nDim> step_sizes, bool positive_direction)
+    {
+        mThreadwiseCopy.MoveSrcSlicingWindow(step_sizes, positive_direction);
+    }
+
+    __device__ void MoveDstSlicingWindow(Array<index_t, nDim> step_sizes, bool positive_direction)
+    {
+        mThreadwiseCopy.MoveDstSlicingWindow(step_sizes, positive_direction);
+    }
+
+    // private:
+    ThreadwiseCopy mThreadwiseCopy;
+};
+
 } // namespace ck
 
 #endif

composable_kernel/include/tensor_operation/threadwise_generic_tensor_slice_copy.hpp

@@ -4,6 +4,7 @@
 #include "common_header.hpp"
 #include "ConstantTensorDescriptor.hpp"
 #include "ConstantMergedTensorDescriptor.hpp"
+#include "tensor_coordinate.hpp"
 
 #ifndef CK_EXPERIMENTAL_USE_MORE_COMPILE_STATIC_THREADWISE_GENERIC_TENSOR_SLICE_COPY_V1
 #define CK_EXPERIMENTAL_USE_MORE_COMPILE_STATIC_THREADWISE_GENERIC_TENSOR_SLICE_COPY_V1 0
@@ -105,5 +106,75 @@ __device__ void threadwise_generic_tensor_slice_copy_v1(
 #endif
 }
 
+template <class TData,
+          class SrcDesc,
+          class DstDesc,
+          class SrcCoordinate,
+          class DstCoordinate,
+          class SliceLengths>
+struct ThreadwiseGenericTensorSliceCopy_v2
+{
+    static constexpr index_t nDim = SrcDesc::GetNumOfDimension();
+
+    __device__ constexpr ThreadwiseGenericTensorSliceCopy_v2()
+        : mSrcSliceOrigin(make_zero_array<index_t, nDim>()),
+          mDstSliceOrigin(make_zero_array<index_t, nDim>())
+    {
+    }
+
+    __device__ constexpr ThreadwiseGenericTensorSliceCopy_v2(SrcCoordinate src_slice_origin,
+                                                             DstCoordinate dst_slice_origin)
+        : mSrcSliceOrigin(src_slice_origin), mDstSliceOrigin(dst_slice_origin)
+    {
+    }
+
+    __device__ void SetSrcSliceOrigin(SrcCoordinate src_slice_origin)
+    {
+        mSrcSliceOrigin = src_slice_origin;
+    }
+
+    __device__ void SetDstSliceOrigin(DstCoordinate dst_slice_origin)
+    {
+        mDstSliceOrigin = dst_slice_origin;
+    }
+
+    __device__ void Run(const TData* p_src, TData* p_dst) const
+    {
+        static_ford<SliceLengths>{}([&](auto data_id) {
+            p_dst[(mDstSliceOrigin + data_id).GetOffset()] =
+                p_src[(mSrcSliceOrigin + data_id).GetOffset()];
+
+        });
+    }
+
+    __device__ void MoveSrcSlicingWindow(Array<index_t, nDim> step_sizes, bool positive_direction)
+    {
+        if(positive_direction)
+        {
+            mSrcSliceOrigin += step_sizes;
+        }
+        else
+        {
+            mSrcSliceOrigin -= step_sizes;
+        }
+    }
+
+    __device__ void MoveDstSlicingWindow(Array<index_t, nDim> step_sizes, bool positive_direction)
+    {
+        if(positive_direction)
+        {
+            mDstSliceOrigin += step_sizes;
+        }
+        else
+        {
+            mDstSliceOrigin -= step_sizes;
+        }
+    }
+
+    // private:
+    SrcCoordinate mSrcSliceOrigin;
+    DstCoordinate mDstSliceOrigin;
+};
+
 } // namespace ck
 #endif

composable_kernel/include/utility/Array.hpp

@@ -10,6 +10,7 @@ template <class TData, index_t NSize>
 struct Array
 {
     using Type      = Array<TData, NSize>;
+    using data_type = TData;
 
     static constexpr index_t nSize = NSize;
 
@@ -20,7 +21,7 @@ struct Array
     {
     }
 
-    __host__ __device__ constexpr index_t GetSize() const { return NSize; }
+    __host__ __device__ static constexpr index_t GetSize() { return NSize; }
 
     template <index_t I>
     __host__ __device__ constexpr TData operator[](Number<I>) const
@@ -208,6 +209,21 @@ __host__ __device__ constexpr auto operator-(Array<TData, NSize> a, Array<TData,
     return result;
 }
 
+// Array += Array
+template <class TData, index_t NSize>
+__host__ __device__ constexpr auto operator+=(Array<TData, NSize>& a, Array<TData, NSize> b)
+{
+    a = a + b;
+    return a;
+}
+
+// Array -= Array
+template <class TData, index_t NSize>
+__host__ __device__ constexpr auto operator-=(Array<TData, NSize>& a, Array<TData, NSize> b)
+{
+    a = a - b;
+    return a;
+}
 // Array = Array + Sequence
 template <class TData, index_t NSize, index_t... Is>
 __host__ __device__ constexpr auto operator+(Array<TData, NSize> a, Sequence<Is...> b)

composable_kernel/include/utility/Sequence.hpp

@@ -13,6 +13,7 @@ template <index_t... Is>
 struct Sequence
 {
     using Type      = Sequence;
+    using data_type = index_t;
 
     static constexpr index_t mSize = sizeof...(Is);
 

driver/include/device_convolution_implicit_gemm_v4r3_nchw_kcyx_nkhw.hpp

@@ -90,14 +90,14 @@ void device_convolution_implicit_gemm_v4r3_nchw_kcyx_nkhw(InDesc,
 
     constexpr index_t InBlockCopyDataPerAccess_W2 = 4;
 
-    using WeiBlockCopySubLengths_E_K            = Sequence<2, 2>;
-    using WeiBlockCopyClusterLengths_E_K        = Sequence<4, 64>;
+    using WeiBlockCopySubLengths_E_K            = Sequence<4, 1>;
+    using WeiBlockCopyClusterLengths_E_K        = Sequence<2, 128>;
     using WeiBlockCopyThreadClusterArrangeOrder = Sequence<1, 0>; // [K, E]
     using WeiBlockCopySrcAccessOrder            = Sequence<1, 0>; // [K, E]
     using WeiBlockCopyDstAccessOrder            = Sequence<0, 1>; // [E, K]
 
-    constexpr index_t WeiBlockCopySrcDataPerRead_E  = 1;
-    constexpr index_t WeiBlockCopyDstDataPerWrite_K = 2;
+    constexpr index_t WeiBlockCopySrcDataPerRead_E  = 4;
+    constexpr index_t WeiBlockCopyDstDataPerWrite_K = 1;
 #endif
 
     constexpr index_t N0  = N / (N1 * N2);

driver/include/device_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw.hpp

+#pragma once
+#include <unistd.h>
+#include "device.hpp"
+#include "tensor.hpp"
+#include "gridwise_convolution_kernel_wrapper.hpp"
+#include "gridwise_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw.hpp"
+
+using namespace ck;
+
+template <class T,
+          class InDesc,
+          class WeiDesc,
+          class OutDesc,
+          class ConvStrides,
+          class ConvDilations>
+void device_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw(InDesc,
+                                                          const Tensor<T>& in_nchw,
+                                                          WeiDesc,
+                                                          const Tensor<T>& wei_kcyx,
+                                                          OutDesc,
+                                                          Tensor<T>& out_nkhw,
+                                                          ConvStrides,
+                                                          ConvDilations,
+                                                          index_t nrepeat)
+{
+    constexpr auto I0 = Number<0>{};
+    constexpr auto I1 = Number<1>{};
+    constexpr auto I2 = Number<2>{};
+    constexpr auto I3 = Number<3>{};
+
+    constexpr auto in_nchw_desc  = InDesc{};
+    constexpr auto wei_kcyx_desc = WeiDesc{};
+    constexpr auto out_nkhw_desc = OutDesc{};
+
+    constexpr index_t Hi = in_nchw_desc.GetLength(I2);
+    constexpr index_t Wi = in_nchw_desc.GetLength(I3);
+
+    constexpr index_t N  = out_nkhw_desc.GetLength(I0);
+    constexpr index_t Ho = out_nkhw_desc.GetLength(I2);
+    constexpr index_t Wo = out_nkhw_desc.GetLength(I3);
+
+    constexpr index_t K = wei_kcyx_desc.GetLength(I0);
+    constexpr index_t C = wei_kcyx_desc.GetLength(I1);
+    constexpr index_t Y = wei_kcyx_desc.GetLength(I2);
+    constexpr index_t X = wei_kcyx_desc.GetLength(I3);
+
+    std::size_t data_sz = sizeof(T);
+    DeviceMem in_nchw_device_buf(data_sz * in_nchw.mDesc.GetElementSpace());
+    DeviceMem wei_kcyx_device_buf(data_sz * wei_kcyx.mDesc.GetElementSpace());
+    DeviceMem out_nkhw_device_buf(data_sz * out_nkhw.mDesc.GetElementSpace());
+
+    in_nchw_device_buf.ToDevice(in_nchw.mData.data());
+    wei_kcyx_device_buf.ToDevice(wei_kcyx.mData.data());
+    out_nkhw_device_buf.ToDevice(out_nkhw.mData.data());
+
+#if 1
+    // 1x1 filter, 8x8 image
+    constexpr index_t BlockSize = 256;
+
+    constexpr index_t BPerBlock = 128;
+    constexpr index_t KPerBlock = 128;
+    constexpr index_t EPerBlock = 8;
+
+    constexpr index_t GemmMPerThreadSubC = 4;
+    constexpr index_t GemmNPerThreadSubC = 4;
+    constexpr index_t GemmMLevel0Cluster = 4;
+    constexpr index_t GemmNLevel0Cluster = 4;
+    constexpr index_t GemmMLevel1Cluster = 4;
+    constexpr index_t GemmNLevel1Cluster = 4;
+    constexpr index_t GemmKPerThreadLoop = 1;
+    constexpr index_t GemmDataPerReadA   = 4;
+    constexpr index_t GemmDataPerReadB   = 4;
+
+    using InBlockCopySubLengths_E_B            = Sequence<4, 1>;
+    using InBlockCopyClusterLengths_E_B        = Sequence<2, 128>;
+    using InBlockCopyThreadClusterArrangeOrder = Sequence<0, 1>; // [E, B]
+    using InBlockCopySrcAccessOrder            = Sequence<0, 1>; // [E, B]
+    using InBlockCopyDstAccessOrder            = Sequence<0, 1>; // [E, B]
+
+    constexpr index_t InBlockCopyDataPerAccess_B = 1;
+
+    using WeiBlockCopySubLengths_E_K            = Sequence<4, 1>;
+    using WeiBlockCopyClusterLengths_E_K        = Sequence<2, 128>;
+    using WeiBlockCopyThreadClusterArrangeOrder = Sequence<1, 0>; // [K, E]
+    using WeiBlockCopySrcAccessOrder            = Sequence<1, 0>; // [K, E]
+    using WeiBlockCopyDstAccessOrder            = Sequence<0, 1>; // [E, K]
+
+    constexpr index_t WeiBlockCopySrcDataPerRead_E  = 1;
+    constexpr index_t WeiBlockCopyDstDataPerWrite_K = 1;
+#endif
+
+    constexpr index_t B = N * Ho * Wo;
+
+    constexpr index_t GridSize =
+        ((B + BPerBlock - 1) / BPerBlock) * ((K + KPerBlock - 1) / KPerBlock);
+
+    printf("%s: BlockSize %u, GridSize %u \n", __func__, BlockSize, GridSize);
+
+    for(index_t i = 0; i < nrepeat; ++i)
+    {
+        constexpr auto gridwise_conv = GridwiseConvolutionImplicitGemm_v4r4_nchw_kcyx_nkhw<
+            GridSize,
+            BlockSize,
+            T,
+            decltype(in_nchw_desc),
+            decltype(wei_kcyx_desc),
+            decltype(out_nkhw_desc),
+            ConvStrides,
+            ConvDilations,
+            BPerBlock,
+            KPerBlock,
+            EPerBlock,
+            GemmMPerThreadSubC,
+            GemmNPerThreadSubC,
+            GemmMLevel0Cluster,
+            GemmNLevel0Cluster,
+            GemmMLevel1Cluster,
+            GemmNLevel1Cluster,
+            GemmKPerThreadLoop,
+            GemmDataPerReadA,
+            GemmDataPerReadB,
+            InBlockCopySubLengths_E_B,
+            InBlockCopyClusterLengths_E_B,
+            InBlockCopyThreadClusterArrangeOrder,
+            InBlockCopySrcAccessOrder,
+            InBlockCopyDstAccessOrder,
+            InBlockCopyDataPerAccess_B,
+            WeiBlockCopySubLengths_E_K,
+            WeiBlockCopyClusterLengths_E_K,
+            WeiBlockCopyThreadClusterArrangeOrder,
+            WeiBlockCopySrcAccessOrder,
+            WeiBlockCopyDstAccessOrder,
+            WeiBlockCopySrcDataPerRead_E,
+            WeiBlockCopyDstDataPerWrite_K>{};
+
+        float time = launch_kernel(run_gridwise_convolution_kernel<decltype(gridwise_conv), T>,
+                                   dim3(GridSize),
+                                   dim3(BlockSize),
+                                   0,
+                                   static_cast<T*>(in_nchw_device_buf.GetDeviceBuffer()),
+                                   static_cast<T*>(wei_kcyx_device_buf.GetDeviceBuffer()),
+                                   static_cast<T*>(out_nkhw_device_buf.GetDeviceBuffer()));
+
+        printf("Elapsed time : %f ms, %f TFlop/s\n",
+               time,
+               (float)calculate_convolution_flops(InDesc{}, WeiDesc{}, OutDesc{}) /
+                   (std::size_t(1000) * 1000 * 1000) / time);
+        usleep(std::min(time * 1000, float(10000)));
+    }
+
+    out_nkhw_device_buf.FromDevice(out_nkhw.mData.data());
+}

driver/src/driver.cpp

@@ -16,6 +16,7 @@
 #include "device_convolution_implicit_gemm_v4r1_nchw_kcyx_nkhw.hpp"
 #include "device_convolution_implicit_gemm_v4r2_nchw_kcyx_nkhw.hpp"
 #include "device_convolution_implicit_gemm_v4r3_nchw_kcyx_nkhw.hpp"
+#include "device_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw.hpp"
 
 struct GeneratorTensor_1
 {
@@ -71,13 +72,16 @@ int main(int argc, char* argv[])
     using namespace ck;
 
 #if 0
-    constexpr index_t N  = 8;
+    constexpr index_t N  = 2;
     constexpr index_t C  = 16;
-    constexpr index_t HI = 3;
-    constexpr index_t WI = 18;
+    constexpr index_t HI = 8;
+    constexpr index_t WI = 8;
     constexpr index_t K  = 128;
-    constexpr index_t Y  = 3;
-    constexpr index_t X  = 3;
+    constexpr index_t Y  = 1;
+    constexpr index_t X  = 1;
+
+    using ConvStrides   = Sequence<1, 1>;
+    using ConvDilations = Sequence<1, 1>;
 
     constexpr index_t HPad = 0;
     constexpr index_t WPad = 0;
@@ -249,7 +253,7 @@ int main(int argc, char* argv[])
 
     constexpr index_t HPad = 0;
     constexpr index_t WPad = 0;
-#elif 0
+#elif 1
     // 1x1 filter, 8x8 image
     // cudnn@V100 68%, ck@V100 72%, ck@P100 52%, ck@VII 42%
     constexpr index_t N  = 64;
@@ -265,7 +269,7 @@ int main(int argc, char* argv[])
 
     constexpr index_t HPad = 0;
     constexpr index_t WPad = 0;
-#elif 1
+#elif 0
     // 1x1 filter, 8x8 image
     // cudnn@V100 77%, ck@V100 76%, ck@P100 79%, ck@VII 51%
     constexpr index_t N  = 128;
@@ -491,7 +495,7 @@ int main(int argc, char* argv[])
 
     if(do_verification)
     {
-#if 1
+#if 0
         in_nchw.GenerateTensorValue(GeneratorTensor_1{}, num_thread);
         wei_kcyx.GenerateTensorValue(GeneratorTensor_1{}, num_thread);
 #elif 0
@@ -548,7 +552,7 @@ int main(int argc, char* argv[])
                                                          ConvStrides{},
                                                          ConvDilations{},
                                                          nrepeat);
-#elif 1
+#elif 0
     device_convolution_implicit_gemm_v4r3_nchw_kcyx_nkhw(in_nchw_desc,
                                                          in_nchw,
                                                          wei_kcyx_desc,
@@ -558,6 +562,16 @@ int main(int argc, char* argv[])
                                                          ConvStrides{},
                                                          ConvDilations{},
                                                          nrepeat);
+#elif 1
+    device_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw(in_nchw_desc,
+                                                         in_nchw,
+                                                         wei_kcyx_desc,
+                                                         wei_kcyx,
+                                                         out_nkhw_desc,
+                                                         out_nkhw_device,
+                                                         ConvStrides{},
+                                                         ConvDilations{},
+                                                         nrepeat);
 #elif 0
     device_implicit_gemm_convolution_1_chwn_cyxk_khwn_padded(in_nchw_desc,
                                                              in_nchw,