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Commit c881136b authored by Po Yen Chen's avatar Po Yen Chen
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Merge branch 'develop' into ck_tile/support-vllm-kcache-layout

parents c5e8e14f 4e076909
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Showing with 1255 additions and 284 deletions
include/ck_tile/core/tensor/static_distributed_tensor.hpp
View file @ c881136b
......@@ -29,6 +29,7 @@ struct static_distributed_tensor
remove_cvref_t<decltype(StaticTileDistribution{}.get_ys_to_d_descriptor())>;
static constexpr index_t kThreadElementSpaceSize = ThreadTensorDesc{}.get_element_space_size();
static_assert(0 < kThreadElementSpaceSize, "Make sure tile distribution is valid");
CK_TILE_HOST_DEVICE static constexpr auto get_num_of_dimension()
{
......
include/ck_tile/host.hpp
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
......
include/ck_tile/host/arg_parser.hpp
View file @ c881136b
......@@ -15,11 +15,14 @@
namespace ck_tile {
/*
* a host side utility, arg parser for
* -[key0]=[value0] -[key1]=[value1] ...
* a host side utility, arg parser for, either
* -[key0] = [value0, value1, value2]
* or
* -[key0]=[value0] -[key1]=[value1] ...
*/
class ArgParser
{
public:
class Arg
{
......@@ -187,6 +190,45 @@ class ArgParser
return value;
}
std::vector<std::string> get_string_vec(const std::string& name,
const std::string& delimiter = ",") const
{
if(get_str(name).empty())
{
return {};
}
std::string s = get_str(name);
std::vector<std::string> tokens;
size_t pos = 0;
std::string token;
while((pos = s.find(delimiter)) != std::string::npos)
{
token = s.substr(0, pos);
tokens.push_back(token);
s.erase(0, pos + delimiter.length());
}
tokens.push_back(s);
return tokens;
}
std::vector<int> get_int_vec(const std::string& name, const std::string& delimiter = ",") const
{
if(get_str(name).empty())
{
return {};
}
const std::vector<std::string> args = get_string_vec(name, delimiter);
std::vector<int> tokens;
tokens.reserve(static_cast<int>(args.size()));
for(const std::string& token : args)
{
int value = atoi(token.c_str());
tokens.push_back(value);
}
return tokens;
}
private:
std::unordered_map<std::string, Arg> input_map;
std::vector<std::string> keys;
......
include/ck_tile/ops/add_rmsnorm2d_rdquant.hpp
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
......
include/ck_tile/ops/common.hpp
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
......
include/ck_tile/ops/elementwise.hpp
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
......
include/ck_tile/ops/epilogue.hpp
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
......
include/ck_tile/ops/epilogue/cshuffle_epilogue.hpp
View file @ c881136b
// 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
......@@ -56,6 +56,13 @@ struct CShuffleEpilogue
// No additional shared memory needed
CK_TILE_HOST_DEVICE static constexpr index_t GetSmemSize() { return 0; }
CK_TILE_HOST_DEVICE static constexpr bool IsOutputTransposed()
{
// TODO: At now CShuffle doesn't allow to vector store after permute.
// It should be fixed and this function should return true.
return false;
}
template <typename OAccTile>
CK_TILE_DEVICE void permute_tile_data(OAccTile& o_acc_tile)
{
......@@ -111,7 +118,9 @@ struct CShuffleEpilogue
}
}
template <typename ODramWindowTmp, typename OAccTile>
template <typename ODramWindowTmp,
typename OAccTile,
memory_operation_enum out_memory_data_op = memory_operation_enum::set>
CK_TILE_DEVICE auto operator()(ODramWindowTmp& o_dram_window_tmp, OAccTile& o_acc_tile)
{
const auto& current_window_origin = o_dram_window_tmp.get_window_origin();
......@@ -158,12 +167,26 @@ struct CShuffleEpilogue
// Store the tile data to the permuted location
if constexpr(kPadM || kPadN)
{
store_tile_raw(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
if constexpr(out_memory_data_op == memory_operation_enum::set)
{
store_tile_raw(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
else
{
update_tile_raw(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
buffer_store_fence();
}
else
{
store_tile(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
if constexpr(out_memory_data_op == memory_operation_enum::set)
{
store_tile(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
else
{
update_tile(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
}
}
};
......
include/ck_tile/ops/epilogue/default_2d_epilogue.hpp
View file @ c881136b
// 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
......@@ -35,21 +35,39 @@ struct Default2DEpilogue
CK_TILE_HOST_DEVICE static constexpr index_t GetSmemSize() { return 0; }
CK_TILE_HOST_DEVICE static constexpr bool IsOutputTransposed() { return false; }
// TODO: this function assume store out vector size is the same as OAccTile last dimension size
// how do we fix this ?
template <typename ODramWindowTmp, typename OAccTile>
template <typename ODramWindowTmp,
typename OAccTile,
memory_operation_enum out_memory_data_op = memory_operation_enum::set>
CK_TILE_DEVICE auto operator()(ODramWindowTmp& o_dram_window_tmp, const OAccTile& o_acc_tile)
{
// TODO: this is ugly
if constexpr(UseRawStore && (kPadM || kPadN))
{
store_tile_raw(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
if constexpr(out_memory_data_op == memory_operation_enum::set)
{
store_tile_raw(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
else
{
update_tile_raw(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
buffer_store_fence();
}
else
{
store_tile(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
if constexpr(out_memory_data_op == memory_operation_enum::set)
{
store_tile(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
else
{
update_tile(o_dram_window_tmp, cast_tile<ODataType>(o_acc_tile));
}
}
}
};
......
include/ck_tile/ops/flatmm.hpp
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
......
include/ck_tile/ops/fmha.hpp
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
// Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
......@@ -14,9 +14,7 @@
#include "ck_tile/ops/fmha/kernel/fmha_fwd_appendkv_tile_partitioner.hpp"
#include "ck_tile/ops/fmha/kernel/fmha_fwd_kernel.hpp"
#include "ck_tile/ops/fmha/kernel/fmha_fwd_splitkv_combine_kernel.hpp"
#include "ck_tile/ops/fmha/kernel/fmha_fwd_splitkv_combine_tile_partitioner.hpp"
#include "ck_tile/ops/fmha/kernel/fmha_fwd_splitkv_kernel.hpp"
#include "ck_tile/ops/fmha/kernel/fmha_fwd_tile_partitioner.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_bwd_convert_dq.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_bwd_dot_do_o.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr.hpp"
......@@ -28,6 +26,8 @@
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_appendkv_pipeline_default_policy.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_combine_pipeline.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_combine_pipeline_default_policy.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_nwarp_sshuffle_qr_ks_vs.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_nwarp_sshuffle_qr_ks_vs_default_policy.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_qr_ks_vs.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_qr_ks_vs_async.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_qr_ks_vs_async_default_policy.hpp"
......
include/ck_tile/ops/fmha/kernel/fmha_fwd_appendkv_kernel.hpp
View file @ c881136b
......@@ -10,10 +10,9 @@
namespace ck_tile {
template <typename TilePartitioner_, typename FmhaPipeline_>
template <typename FmhaPipeline_>
struct FmhaFwdAppendKVKernel
{
using TilePartitioner = ck_tile::remove_cvref_t<TilePartitioner_>;
using FmhaPipeline = ck_tile::remove_cvref_t<FmhaPipeline_>;
static constexpr ck_tile::index_t kBlockSize = FmhaPipeline::kBlockSize;
static constexpr ck_tile::index_t kBlockPerCu = FmhaPipeline::kBlockPerCu;
......@@ -234,12 +233,25 @@ struct FmhaFwdAppendKVKernel
return kargs;
}
__host__ static constexpr auto GridSize(ck_tile::index_t batch_size,
ck_tile::index_t nhead,
ck_tile::index_t seqlen_q,
ck_tile::index_t seqlen_knew)
CK_TILE_HOST static constexpr auto GridSize(ck_tile::index_t batch_size,
ck_tile::index_t nhead,
ck_tile::index_t seqlen_q,
ck_tile::index_t seqlen_knew)
{
return TilePartitioner::GridSize(batch_size, nhead, seqlen_q, seqlen_knew);
// TODO: this may need tuning
return dim3(std::max(ck_tile::integer_divide_ceil(seqlen_q, FmhaPipeline::kM0),
ck_tile::integer_divide_ceil(seqlen_knew, FmhaPipeline::kN0)),
nhead,
batch_size);
}
CK_TILE_DEVICE static constexpr auto GetTileIndex(const Kargs& /* kargs */)
{
const index_t i_tile = blockIdx.x;
const index_t i_nhead = blockIdx.y;
const index_t i_batch = blockIdx.z;
return ck_tile::make_tuple(i_tile, i_nhead, i_batch);
}
__host__ static constexpr auto BlockSize() { return dim3(kBlockSize); }
......@@ -247,7 +259,7 @@ struct FmhaFwdAppendKVKernel
CK_TILE_DEVICE void operator()(Kargs kargs) const
{
// divide problem
const auto [i_tile, i_nhead, i_batch] = TilePartitioner{}();
const auto [i_tile, i_nhead, i_batch] = GetTileIndex(kargs);
const index_t i_m0 = __builtin_amdgcn_readfirstlane(i_tile * FmhaPipeline::kM0);
const index_t i_n0 = __builtin_amdgcn_readfirstlane(i_tile * FmhaPipeline::kN0);
......
include/ck_tile/ops/fmha/kernel/fmha_fwd_kernel.hpp
View file @ c881136b
......@@ -20,10 +20,9 @@
namespace ck_tile {
template <typename TilePartitioner_, typename FmhaPipeline_, typename EpiloguePipeline_>
template <typename FmhaPipeline_, typename EpiloguePipeline_>
struct FmhaFwdKernel
{
using TilePartitioner = ck_tile::remove_cvref_t<TilePartitioner_>;
using FmhaPipeline = ck_tile::remove_cvref_t<FmhaPipeline_>;
using EpiloguePipeline = ck_tile::remove_cvref_t<EpiloguePipeline_>;
static constexpr ck_tile::index_t kBlockSize = FmhaPipeline::kBlockSize;
......@@ -71,7 +70,8 @@ struct FmhaFwdKernel
using bfs = typename FmhaPipeline::BlockFmhaShape;
using g0br = typename bfs::Gemm0BlockWarps;
using g1br = typename bfs::Gemm1BlockWarps;
using gwt = typename bfs::Gemm0WarpTile;
using g0wt = typename bfs::Gemm0WarpTile;
using g1wt = typename bfs::Gemm1WarpTile;
#define _SS_ std::string
#define _TS_ std::to_string
auto pn = [&] () {
......@@ -83,12 +83,13 @@ struct FmhaFwdKernel
return n.empty() ? n : std::string("p") + n; }();
return
_SS_("fmha_fwd_d") + _TS_(bfs::kQKHeaddim) + "_" + _SS_(t2s<QDataType>::name) +
"_" + (kIsGroupMode ? "group" : "batch") + "_" + _SS_(TilePartitioner::name) + "_"
"_" + (kIsGroupMode ? "group" : "batch") + "_"
"b" + _TS_(bfs::kM0) + "x" + _TS_(bfs::kN0) + "x" + _TS_(bfs::kK0) + "x" +
_TS_(bfs::kN1) + "x" + _TS_(bfs::kK1) + "x" + _TS_(bfs::kQKHeaddim) + "_" +
"r" + _TS_(g0br::at(ck_tile::number<0>{})) + "x" + _TS_(g0br::at(ck_tile::number<1>{})) + "x" + _TS_(g0br::at(ck_tile::number<2>{})) + "_" +
"r" + _TS_(g1br::at(ck_tile::number<0>{})) + "x" + _TS_(g1br::at(ck_tile::number<1>{})) + "x" + _TS_(g1br::at(ck_tile::number<2>{})) + "_" +
"w" + _TS_(gwt::at(ck_tile::number<0>{})) + "x" + _TS_(gwt::at(ck_tile::number<1>{})) + "x" + _TS_(gwt::at(ck_tile::number<2>{})) + "_" +
"w" + _TS_(g0wt::at(ck_tile::number<0>{})) + "x" + _TS_(g0wt::at(ck_tile::number<1>{})) + "x" + _TS_(g0wt::at(ck_tile::number<2>{})) + "_" +
"w" + _TS_(g1wt::at(ck_tile::number<0>{})) + "x" + _TS_(g1wt::at(ck_tile::number<1>{})) + "x" + _TS_(g1wt::at(ck_tile::number<2>{})) + "_" +
(kBlockPerCuInput == -1 ? "" : ("o" + _TS_(kBlockPerCu) + "_")) + _SS_(FmhaPipeline::name) + "_" +
"v" + (std::is_same_v<VLayout, ck_tile::tensor_layout::gemm::RowMajor> ? "r" : "c") + (pn.empty() ? "" : "_" + pn) +
(BiasEnum == BlockAttentionBiasEnum::NO_BIAS ? _SS_("") : (_SS_("_") + BlockAttentionBiasEnumToStr<BiasEnum>::name)) +
......@@ -865,9 +866,75 @@ struct FmhaFwdKernel
CK_TILE_HOST static constexpr auto GridSize(ck_tile::index_t batch_size_,
ck_tile::index_t nhead_,
ck_tile::index_t seqlen_q_,
ck_tile::index_t hdim_v_)
ck_tile::index_t hdim_v_,
bool has_padded_seqlen_k = false)
{
return TilePartitioner::GridSize(batch_size_, nhead_, seqlen_q_, hdim_v_);
// has_padded_seqlen_k is determined by checking (seqlen_k_ptr != nullptr)
if(has_padded_seqlen_k)
{
// TODO: this may need tuning
return dim3(nhead_,
batch_size_,
ck_tile::integer_divide_ceil(seqlen_q_, FmhaPipeline::kM0) *
ck_tile::integer_divide_ceil(hdim_v_, FmhaPipeline::kN1));
}
else
{
// TODO: this may need tuning
return dim3(ck_tile::integer_divide_ceil(seqlen_q_, FmhaPipeline::kM0) *
ck_tile::integer_divide_ceil(hdim_v_, FmhaPipeline::kN1),
nhead_,
batch_size_);
}
}
CK_TILE_DEVICE static constexpr auto GetTileIndex(const Kargs& kargs)
{
bool has_padded_seqlen_k = false;
if constexpr(kIsGroupMode)
has_padded_seqlen_k = (kargs.seqlen_k_ptr != nullptr);
if(has_padded_seqlen_k)
{
// const index_t num_tile_m0 = seqlen_q / kM0;
const index_t num_tile_n1 =
ck_tile::integer_divide_ceil(kargs.hdim_v, FmhaPipeline::kN1);
const index_t i_block = blockIdx.z;
const index_t i_nhead = blockIdx.x;
const index_t i_batch = blockIdx.y;
const auto f = [](index_t dividend, index_t divisor) {
index_t quotient = dividend / divisor;
index_t modulus = dividend - quotient * divisor;
return ck_tile::make_tuple(quotient, modulus);
};
const auto [i_tile_m, i_tile_n] = f(i_block, num_tile_n1);
return ck_tile::make_tuple(i_tile_m, i_tile_n, i_nhead, i_batch);
}
else
{
// const index_t num_tile_m0 = seqlen_q / kM0;
const index_t num_tile_n1 =
ck_tile::integer_divide_ceil(kargs.hdim_v, FmhaPipeline::kN1);
const index_t i_block = blockIdx.x;
const index_t i_nhead = blockIdx.y;
const index_t i_batch = blockIdx.z;
const auto f = [](index_t dividend, index_t divisor) {
index_t quotient = dividend / divisor;
index_t modulus = dividend - quotient * divisor;
return ck_tile::make_tuple(quotient, modulus);
};
const auto [i_tile_m, i_tile_n] = f(i_block, num_tile_n1);
return ck_tile::make_tuple(i_tile_m, i_tile_n, i_nhead, i_batch);
}
}
CK_TILE_HOST static constexpr auto BlockSize() { return dim3(kBlockSize); }
......@@ -883,8 +950,7 @@ struct FmhaFwdKernel
__shared__ char smem_ptr[GetSmemSize()];
// divide problem
const auto [i_tile_m, i_tile_n, i_nhead, i_batch] =
TilePartitioner{}(kargs.seqlen_q, kargs.hdim_v);
const auto [i_tile_m, i_tile_n, i_nhead, i_batch] = GetTileIndex(kargs);
const index_t i_m0 = __builtin_amdgcn_readfirstlane(i_tile_m * FmhaPipeline::kM0);
const index_t i_n1 = __builtin_amdgcn_readfirstlane(i_tile_n * FmhaPipeline::kN1);
......
include/ck_tile/ops/fmha/kernel/fmha_fwd_splitkv_combine_kernel.hpp
View file @ c881136b
......@@ -5,12 +5,13 @@
namespace ck_tile {
template <typename TilePartitioner_, typename FmhaPipeline_, typename EpiloguePipeline_>
template <typename FmhaPipeline_, typename EpiloguePipeline_>
struct FmhaFwdSplitKVCombineKernel
{
using TilePartitioner = remove_cvref_t<TilePartitioner_>;
using FmhaPipeline = remove_cvref_t<FmhaPipeline_>;
using EpiloguePipeline = remove_cvref_t<EpiloguePipeline_>;
using FmhaPipeline = remove_cvref_t<FmhaPipeline_>;
using EpiloguePipeline = remove_cvref_t<EpiloguePipeline_>;
static constexpr index_t kNumWarps = FmhaPipeline::kNumWarps;
static constexpr index_t kBlockSize = FmhaPipeline::kBlockSize;
static constexpr index_t kBlockPerCu = FmhaPipeline::kBlockPerCu;
static_assert(kBlockPerCu > 0);
......@@ -50,8 +51,7 @@ struct FmhaFwdSplitKVCombineKernel
return
_SS_("fmha_fwd_splitkv_combine_d") + _TS_(FmhaPipeline::kHeadDimV) + "_" + _SS_(t2s<ODataType>::name) +
"_" + (kIsGroupMode ? "group" : "batch") + "_"
"b" + _TS_(FmhaPipeline::kM0) + "x" +
_TS_(FmhaPipeline::kN1) + "_" +
"b" + _TS_(FmhaPipeline::kN1) + "_" +
(kBlockPerCuInput == -1 ? "" : ("o" + _TS_(kBlockPerCu) + "_")) +
_SS_(FmhaPipeline::name) +
(pn.empty() ? "" : "_" + pn) +
......@@ -234,12 +234,35 @@ struct FmhaFwdSplitKVCombineKernel
return kargs;
}
__host__ static constexpr auto GridSize(ck_tile::index_t batch_size,
ck_tile::index_t nhead,
ck_tile::index_t max_seqlen_q,
ck_tile::index_t hdim_v)
CK_TILE_HOST static constexpr auto GridSize(ck_tile::index_t batch_size,
ck_tile::index_t nhead,
ck_tile::index_t max_seqlen_q,
ck_tile::index_t hdim_v)
{
// TODO: this may need tuning
return dim3(ck_tile::integer_divide_ceil(max_seqlen_q, FmhaPipeline::kM0) *
ck_tile::integer_divide_ceil(hdim_v, FmhaPipeline::kN1),
nhead,
batch_size);
}
CK_TILE_DEVICE static constexpr auto GetTileIndex(const Kargs& kargs)
{
return TilePartitioner::GridSize(batch_size, nhead, max_seqlen_q, hdim_v);
const index_t num_tile_n1 = ck_tile::integer_divide_ceil(kargs.hdim_v, FmhaPipeline::kN1);
const index_t i_block = blockIdx.x;
const index_t i_nhead = blockIdx.y;
const index_t i_batch = blockIdx.z;
const auto f = [](index_t dividend, index_t divisor) {
index_t quotient = dividend / divisor;
index_t modulus = dividend - quotient * divisor;
return ck_tile::make_tuple(quotient, modulus);
};
const auto [i_tile_m, i_tile_n] = f(i_block, num_tile_n1);
return ck_tile::make_tuple(i_tile_m, i_tile_n, i_nhead, i_batch);
}
__host__ static constexpr auto BlockSize() { return dim3(kBlockSize); }
......@@ -255,8 +278,7 @@ struct FmhaFwdSplitKVCombineKernel
__shared__ char smem_ptr[GetSmemSize()];
// divide problem
const auto [i_tile_m, i_tile_n, i_nhead, i_batch] =
TilePartitioner{}(kargs.seqlen_q, kargs.hdim_v);
const auto [i_tile_m, i_tile_n, i_nhead, i_batch] = GetTileIndex(kargs);
const index_t i_m0 = __builtin_amdgcn_readfirstlane(i_tile_m * FmhaPipeline::kM0);
const index_t i_n1 = __builtin_amdgcn_readfirstlane(i_tile_n * FmhaPipeline::kN1);
......@@ -339,37 +361,56 @@ struct FmhaFwdSplitKVCombineKernel
number<FmhaPipeline::kAlignmentOacc>{},
number<1>{});
// read 4 * (kM0, kN1) o_acc tiles simultaneously by 4 warps
const auto o_acc_dram_view = pad_tensor_view(
o_acc_dram_naive,
make_tuple(number<1>{}, number<FmhaPipeline::kM0>{}, number<FmhaPipeline::kN1>{}),
sequence<false, kPadSeqLenQ, kPadHeadDimV>{});
make_tuple(
number<kNumWarps>{}, number<FmhaPipeline::kM0>{}, number<FmhaPipeline::kN1>{}),
sequence<true, kPadSeqLenQ, kPadHeadDimV>{});
const index_t padded_num_splits =
o_acc_dram_view.get_tensor_descriptor().get_lengths()[number<0>{}];
const index_t padded_seqlen_q =
o_acc_dram_view.get_tensor_descriptor().get_lengths()[number<1>{}];
const index_t padded_hdim_v =
o_acc_dram_view.get_tensor_descriptor().get_lengths()[number<2>{}];
return transform_tensor_view(
const index_t num_m_tiles = integer_divide_floor(padded_seqlen_q, FmhaPipeline::kM0);
// transform tensor view by following steps, given shape: (padded_num_splits,
// padded_seqlen_q, padded_hdim_v)
// 1. unmerge to (padded_num_splits, num_m_tiles, kM0, padded_hdim_v)
// 2. transpose to (num_m_tiles, padded_num_splits, kM0, padded_hdim_v)
// 3. merge to (num_m_tiles * padded_num_splits * kM0, padded_hdim_v)
auto transposed = transform_tensor_view(
o_acc_dram_view,
make_tuple(make_merge_transform(make_tuple(kargs.num_splits, padded_seqlen_q)),
make_tuple(make_pass_through_transform(padded_num_splits),
make_unmerge_transform(make_tuple(num_m_tiles, FmhaPipeline::kM0)),
make_pass_through_transform(padded_hdim_v)),
make_tuple(sequence<0, 1>{}, sequence<2>{}),
make_tuple(sequence<0>{}, sequence<1>{}, sequence<2>{}),
make_tuple(sequence<1>{}, sequence<0, 2>{}, sequence<3>{}));
return transform_tensor_view(
transposed,
make_tuple(make_merge_transform(
make_tuple(num_m_tiles, padded_num_splits, FmhaPipeline::kM0)),
make_pass_through_transform(padded_hdim_v)),
make_tuple(sequence<0, 1, 2>{}, sequence<3>{}),
make_tuple(sequence<0>{}, sequence<1>{}));
}();
auto lse_acc_dram_window = make_tile_window(
lse_acc_dram,
[&]() {
return make_tuple(number<FmhaPipeline::kMaxSplits>{}, number<FmhaPipeline::kM0>{});
}(),
make_tuple(number<FmhaPipeline::kMaxSplits>{}, number<FmhaPipeline::kM0>{}),
{0, i_m0});
const index_t padded_num_splits =
integer_divide_ceil(kargs.num_splits, kNumWarps) * kNumWarps;
auto o_acc_dram_window = make_tile_window(
o_acc_dram,
[&]() {
return make_tuple(number<FmhaPipeline::kM0>{}, number<FmhaPipeline::kN1>{});
}(),
{i_m0, i_n1});
make_tuple(number<kNumWarps * FmhaPipeline::kM0>{}, number<FmhaPipeline::kN1>{}),
{i_tile_m * padded_num_splits * FmhaPipeline::kM0, i_n1});
// LSE DRAM window
auto lse_dram_window = [&, i_nhead_ = i_nhead]() {
......@@ -410,7 +451,6 @@ struct FmhaFwdSplitKVCombineKernel
identity{}, // lse_element_func
composes(saturates<fp8_t>{}, scales{kargs.scale_o}), // o_acc_element_func
kargs.num_splits,
kargs.seqlen_q,
smem_ptr);
}
else
......@@ -419,7 +459,6 @@ struct FmhaFwdSplitKVCombineKernel
o_acc_dram_window,
lse_dram_window,
kargs.num_splits,
kargs.seqlen_q,
smem_ptr);
}
}();
......
include/ck_tile/ops/fmha/kernel/fmha_fwd_splitkv_combine_tile_partitioner.hpp deleted 100644 → 0
View file @ c5e8e14f
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include "ck_tile/core.hpp"
namespace ck_tile {
template <index_t kM0_, index_t kN1_>
struct FmhaFwdSplitKVCombineTilePartitioner
{
static constexpr ck_tile::index_t kM0 = kM0_;
static constexpr ck_tile::index_t kN1 = kN1_;
CK_TILE_HOST static constexpr auto GridSize(ck_tile::index_t batch_size,
ck_tile::index_t nhead,
ck_tile::index_t max_seqlen_q,
ck_tile::index_t hdim_v)
{
// TODO: this may need tuning
return dim3(ck_tile::integer_divide_ceil(max_seqlen_q, kM0) *
ck_tile::integer_divide_ceil(hdim_v, kN1),
nhead,
batch_size);
}
CK_TILE_DEVICE auto operator()(ck_tile::index_t /*seqlen_q*/, ck_tile::index_t hdim_v)
{
const index_t num_tile_n1 = ck_tile::integer_divide_ceil(hdim_v, kN1);
const index_t i_block = blockIdx.x;
const index_t i_nhead = blockIdx.y;
const index_t i_batch = blockIdx.z;
const auto f = [](index_t dividend, index_t divisor) {
index_t quotient = dividend / divisor;
index_t modulus = dividend - quotient * divisor;
return ck_tile::make_tuple(quotient, modulus);
};
const auto [i_tile_m, i_tile_n] = f(i_block, num_tile_n1);
return ck_tile::make_tuple(i_tile_m, i_tile_n, i_nhead, i_batch);
}
};
} // namespace ck_tile
include/ck_tile/ops/fmha/kernel/fmha_fwd_splitkv_kernel.hpp
View file @ c881136b
......@@ -44,6 +44,7 @@ struct FmhaFwdSplitKVKernel
static constexpr bool kPadHeadDimQ = FmhaPipeline::kPadHeadDimQ;
static constexpr bool kPadHeadDimV = FmhaPipeline::kPadHeadDimV;
static constexpr auto BiasEnum = FmhaPipeline::BiasEnum;
static constexpr bool kStoreLSE = FmhaPipeline::kStoreLSE;
static constexpr bool kDoFp8StaticQuant = FmhaPipeline::Problem::kDoFp8StaticQuant;
static constexpr bool kIsPagedKV = FmhaPipeline::Problem::kIsPagedKV;
......@@ -66,7 +67,8 @@ struct FmhaFwdSplitKVKernel
using bfs = typename FmhaPipeline::BlockFmhaShape;
using g0br = typename bfs::Gemm0BlockWarps;
using g1br = typename bfs::Gemm1BlockWarps;
using gwt = typename bfs::Gemm0WarpTile;
using g0wt = typename bfs::Gemm0WarpTile;
using g1wt = typename bfs::Gemm1WarpTile;
#define _SS_ std::string
#define _TS_ std::to_string
auto pn = [&] () {
......@@ -83,11 +85,12 @@ struct FmhaFwdSplitKVKernel
_TS_(bfs::kN1) + "x" + _TS_(bfs::kK1) + "x" + _TS_(bfs::kQKHeaddim) + "_" +
"r" + _TS_(g0br::at(ck_tile::number<0>{})) + "x" + _TS_(g0br::at(ck_tile::number<1>{})) + "x" + _TS_(g0br::at(ck_tile::number<2>{})) + "_" +
"r" + _TS_(g1br::at(ck_tile::number<0>{})) + "x" + _TS_(g1br::at(ck_tile::number<1>{})) + "x" + _TS_(g1br::at(ck_tile::number<2>{})) + "_" +
"w" + _TS_(gwt::at(ck_tile::number<0>{})) + "x" + _TS_(gwt::at(ck_tile::number<1>{})) + "x" + _TS_(gwt::at(ck_tile::number<2>{})) + "_" +
"w" + _TS_(g0wt::at(ck_tile::number<0>{})) + "x" + _TS_(g0wt::at(ck_tile::number<1>{})) + "x" + _TS_(g0wt::at(ck_tile::number<2>{})) + "_" +
"w" + _TS_(g1wt::at(ck_tile::number<0>{})) + "x" + _TS_(g1wt::at(ck_tile::number<1>{})) + "x" + _TS_(g1wt::at(ck_tile::number<2>{})) + "_" +
(kBlockPerCuInput == -1 ? "" : ("o" + _TS_(kBlockPerCu) + "_")) + _SS_(FmhaPipeline::name) + "_" +
"v" + (std::is_same_v<VLayout, ck_tile::tensor_layout::gemm::RowMajor> ? "r" : "c") + (pn.empty() ? "" : "_" + pn) +
(BiasEnum == BlockAttentionBiasEnum::NO_BIAS ? _SS_("") : (_SS_("_") + BlockAttentionBiasEnumToStr<BiasEnum>::name)) +
(kHasMask ? "_" + _SS_(FmhaMask::name) : "") + (kDoFp8StaticQuant ? "_squant" : "") + (kIsPagedKV ? "_pagedkv" : "" );
(kHasMask ? "_" + _SS_(FmhaMask::name) : "") + (kStoreLSE ? "_lse" : "" ) + (kDoFp8StaticQuant ? "_squant" : "") + (kIsPagedKV ? "_pagedkv" : "" );
#undef _SS_
#undef _TS_
// clang-format on
......
include/ck_tile/ops/fmha/kernel/fmha_fwd_tile_partitioner.hpp deleted 100644 → 0
View file @ c5e8e14f
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include "ck_tile/core.hpp"
namespace ck_tile {
template <typename BlockFmhaShape_>
struct FmhaFwdTilePartitioner
{
using BlockFmhaShape = ck_tile::remove_cvref_t<BlockFmhaShape_>;
static constexpr ck_tile::index_t kM0 = BlockFmhaShape::kM0;
static constexpr ck_tile::index_t kN0 = BlockFmhaShape::kN0;
static constexpr ck_tile::index_t kK0 = BlockFmhaShape::kK0;
static constexpr ck_tile::index_t kN1 = BlockFmhaShape::kN1;
static constexpr ck_tile::index_t kK1 = BlockFmhaShape::kK1;
static constexpr const char* name = "shb";
CK_TILE_HOST static constexpr auto GridSize(ck_tile::index_t batch_size_,
ck_tile::index_t nhead_,
ck_tile::index_t seqlen_q_,
ck_tile::index_t hdim_v_)
{
// TODO: this may need tuning
return dim3(ck_tile::integer_divide_ceil(seqlen_q_, kM0) *
ck_tile::integer_divide_ceil(hdim_v_, kN1),
nhead_,
batch_size_);
}
CK_TILE_DEVICE auto operator()(ck_tile::index_t /*seqlen_q*/, ck_tile::index_t hdim_v)
{
// const index_t num_tile_m0 = seqlen_q / kM0;
const index_t num_tile_n1 = ck_tile::integer_divide_ceil(hdim_v, kN1);
const index_t i_block = blockIdx.x;
const index_t i_nhead = blockIdx.y;
const index_t i_batch = blockIdx.z;
const auto f = [](index_t dividend, index_t divisor) {
index_t quotient = dividend / divisor;
index_t modulus = dividend - quotient * divisor;
return ck_tile::make_tuple(quotient, modulus);
};
const auto [i_tile_m, i_tile_n] = f(i_block, num_tile_n1);
return ck_tile::make_tuple(i_tile_m, i_tile_n, i_nhead, i_batch);
}
};
template <typename BlockFmhaShape_>
using FmhaFwdTilePartitioner_SHB = FmhaFwdTilePartitioner<BlockFmhaShape_>;
template <typename BlockFmhaShape_>
struct FmhaFwdTilePartitioner_HBS
{
using BlockFmhaShape = ck_tile::remove_cvref_t<BlockFmhaShape_>;
static constexpr ck_tile::index_t kM0 = BlockFmhaShape::kM0;
static constexpr ck_tile::index_t kN0 = BlockFmhaShape::kN0;
static constexpr ck_tile::index_t kK0 = BlockFmhaShape::kK0;
static constexpr ck_tile::index_t kN1 = BlockFmhaShape::kN1;
static constexpr ck_tile::index_t kK1 = BlockFmhaShape::kK1;
static constexpr const char* name = "hbs";
CK_TILE_HOST static constexpr auto GridSize(ck_tile::index_t batch_size_,
ck_tile::index_t nhead_,
ck_tile::index_t seqlen_q_,
ck_tile::index_t hdim_v_)
{
// TODO: this may need tuning
return dim3(nhead_,
batch_size_,
ck_tile::integer_divide_ceil(seqlen_q_, kM0) *
ck_tile::integer_divide_ceil(hdim_v_, kN1));
}
CK_TILE_DEVICE auto operator()(ck_tile::index_t /*seqlen_q*/, ck_tile::index_t hdim_v)
{
// const index_t num_tile_m0 = seqlen_q / kM0;
const index_t num_tile_n1 = ck_tile::integer_divide_ceil(hdim_v, kN1);
const index_t i_block = blockIdx.z;
const index_t i_nhead = blockIdx.x;
const index_t i_batch = blockIdx.y;
const auto f = [](index_t dividend, index_t divisor) {
index_t quotient = dividend / divisor;
index_t modulus = dividend - quotient * divisor;
return ck_tile::make_tuple(quotient, modulus);
};
const auto [i_tile_m, i_tile_n] = f(i_block, num_tile_n1);
return ck_tile::make_tuple(i_tile_m, i_tile_n, i_nhead, i_batch);
}
};
} // namespace ck_tile
include/ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_combine_pipeline.hpp
View file @ c881136b
......@@ -53,6 +53,7 @@ struct BlockFmhaFwdSplitKVCombinePipeline
using OaccDataType = remove_cvref_t<typename Problem::OaccDataType>;
using ODataType = remove_cvref_t<typename Problem::ODataType>;
static constexpr index_t kNumWarps = Problem::kNumWarps;
static constexpr index_t kBlockSize = Problem::kBlockSize;
static constexpr index_t kHeadDimV = Problem::kHeadDimV;
......@@ -117,7 +118,6 @@ struct BlockFmhaFwdSplitKVCombinePipeline
const LSEElementFunction& lse_element_func,
const OaccElementFunction& o_acc_element_func,
index_t num_splits,
index_t seqlen_q,
void* smem_ptr) const
{
// lse_acc tile in LDS
......@@ -143,11 +143,12 @@ struct BlockFmhaFwdSplitKVCombinePipeline
// copy lse_acc tile (shape=[kMaxSplits, kM0]) to LDS (shape=[kMaxSplits, kM0]).
auto lse_acc_tile = load_tile(lse_acc_dram_window);
store_tile(lse_acc_lds_write_window, lse_acc_tile);
block_sync_lds();
auto lse_accum = make_static_distributed_tensor<LSEDataType>(
Policy::template MakeLSEaccRegTileDistribution<Problem>());
__builtin_amdgcn_sched_barrier(0);
block_sync_lds();
// copy LDS (shape=[kM0, kMaxSplits]) to lse_accum (shape=[kM0, kMaxSplits])
// and fill up -INF values outside the [kM0, num_splits] region.
{
......@@ -264,46 +265,94 @@ struct BlockFmhaFwdSplitKVCombinePipeline
}
});
}
block_sync_lds();
if constexpr(kStoreLSE)
{
store_tile(lse_dram_window_tmp, tile_elementwise_in(lse_element_func, lse_logsum));
}
auto o_acc_dist = Policy::template MakeOaccDramTileDistribution<Problem>();
auto o_acc_dram_window =
auto o_acc_4_dist = Policy::template MakeOacc4DramTileDistribution<Problem>();
auto o_acc_4_dram_window =
make_tile_window(o_acc_dram_block_window_tmp.get_bottom_tensor_view(),
o_acc_dram_block_window_tmp.get_window_lengths(),
o_acc_dram_block_window_tmp.get_window_origin(),
o_acc_dist);
auto o_acc = make_static_distributed_tensor<OaccDataType>(o_acc_dist);
clear_tile(o_acc);
o_acc_4_dist);
const index_t padded_seqlen_q = integer_divide_ceil(seqlen_q, kM0) * kM0;
// shape=[4 * KM0, kN1]
auto o_acc_4 = make_static_distributed_tensor<OaccDataType>(o_acc_4_dist);
clear_tile(o_acc_4);
for(index_t i_split = 0; i_split < num_splits; ++i_split)
const index_t padded_num_splits = integer_divide_ceil(num_splits, kNumWarps) * kNumWarps;
__builtin_amdgcn_sched_barrier(0);
block_sync_lds();
// each warp handles a [KM0, kN1] tile
for(index_t split_start = 0; split_start < padded_num_splits; split_start += kNumWarps)
{
auto o_tile = load_tile(o_acc_dram_window);
auto o_tile = load_tile(o_acc_4_dram_window);
const index_t i_split = split_start + get_warp_id();
const index_t row_start = kM0 * get_warp_id();
{
constexpr auto spans = decltype(o_acc)::get_distributed_spans();
constexpr auto spans = decltype(o_acc_4)::get_distributed_spans();
sweep_tile_span(spans[number<0>{}], [&](auto idx0) {
sweep_tile_span(spans[number<1>{}], [&](auto idx1) {
constexpr auto i_j_idx = make_tuple(idx0, idx1);
const auto x_indices = get_x_indices_from_distributed_indices(
o_acc.get_tile_distribution(), i_j_idx);
o_acc_4.get_tile_distribution(), i_j_idx);
const auto row = x_indices.at(number<0>{});
const LSEDataType lse_scale = lse_acc_lds(row, i_split);
o_acc(i_j_idx) += lse_scale * o_tile(i_j_idx);
const LSEDataType lse_scale = lse_acc_lds(row - row_start, i_split);
o_acc_4(i_j_idx) += lse_scale * o_tile(i_j_idx);
});
});
}
move_tile_window(o_acc_dram_window, {padded_seqlen_q, 0});
move_tile_window(o_acc_4_dram_window, {kNumWarps * kM0, 0});
}
// 4 o_acc tiles in LDS. shape=[4 * kM0, kN1]
OaccDataType* o_acc_4_lds_ptr = static_cast<OaccDataType*>(static_cast<void*>(
static_cast<char*>(smem_ptr) + Policy::template GetSmemSizeLSEacc<Problem>()));
{
auto o_acc_4_lds_window = [&]() {
auto desc = Policy::template MakeOacc4LdsBlockDescriptor<Problem>();
auto view = make_tensor_view<address_space_enum::lds>(o_acc_4_lds_ptr, desc);
return make_tile_window(view, desc.get_lengths(), {0, 0});
}();
store_tile(o_acc_4_lds_window, o_acc_4);
}
auto o_acc_dist = Policy::template MakeOaccDramTileDistribution<Problem>();
auto o_acc_4_lds_window = [&]() {
auto desc = Policy::template MakeOacc4LdsBlockDescriptor<Problem>();
auto view = make_tensor_view<address_space_enum::lds>(o_acc_4_lds_ptr, desc);
return make_tile_window(view, desc.get_lengths(), {0, 0}, o_acc_dist);
}();
auto o_acc = make_static_distributed_tensor<OaccDataType>(o_acc_dist);
clear_tile(o_acc);
__builtin_amdgcn_sched_barrier(0);
block_sync_lds();
static_for<0, kNumWarps, 1>{}([&](auto) {
auto o_acc_in = load_tile(o_acc_4_lds_window);
{
constexpr auto spans = decltype(o_acc)::get_distributed_spans();
sweep_tile_span(spans[number<0>{}], [&](auto idx0) {
sweep_tile_span(spans[number<1>{}], [&](auto idx1) {
constexpr auto i_j_idx = make_tuple(idx0, idx1);
o_acc(i_j_idx) += o_acc_in(i_j_idx);
});
});
}
move_tile_window(o_acc_4_lds_window, {kM0, 0});
});
o_acc = tile_elementwise_in(o_acc_element_func, o_acc);
return o_acc;
......@@ -316,7 +365,6 @@ struct BlockFmhaFwdSplitKVCombinePipeline
const OaccDramBlockWindow& o_acc_dram_block_window,
LSEDramBlockWindow& lse_dram_block_window,
index_t num_splits,
index_t seqlen_q,
void* smem_ptr) const
{
return operator()(lse_acc_dram_block_window,
......@@ -325,7 +373,6 @@ struct BlockFmhaFwdSplitKVCombinePipeline
identity{},
identity{},
num_splits,
seqlen_q,
smem_ptr);
}
};
......
include/ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_combine_pipeline_default_policy.hpp
View file @ c881136b
......@@ -10,23 +10,38 @@ namespace ck_tile {
struct BlockFmhaFwdSplitKVCombinePipelineDefaultPolicy
{
template <index_t BlockSize, index_t M, index_t N, typename DataType>
template <index_t NumWarps, index_t M, index_t N, typename DataType>
CK_TILE_HOST_DEVICE static constexpr auto GetMaxNumWarpsForTile()
{
static_assert(NumWarps == 1 || NumWarps == 2 || NumWarps == 4);
constexpr index_t ElemPerThread = (M * N) / (NumWarps * get_warp_size());
if constexpr(0 < ElemPerThread)
{
return NumWarps;
}
else
{ // try dividing tile by smaller # of warps
return GetMaxNumWarpsForTile<NumWarps / 2, M, N, DataType>();
}
}
template <index_t NumWarps, index_t M, index_t N, typename DataType>
CK_TILE_HOST_DEVICE static constexpr auto GetVectorSizeForTile()
{
constexpr index_t PixelsPerThread = (M * N) / BlockSize;
static_assert(0 < PixelsPerThread);
constexpr index_t MaxNumWarps = GetMaxNumWarpsForTile<NumWarps, M, N, DataType>();
constexpr index_t MaxNPerThread = 16 / sizeof(DataType);
constexpr index_t NPerThread = min(MaxNPerThread, PixelsPerThread);
constexpr index_t ElemPerThread = (M * N) / (MaxNumWarps * get_warp_size());
return NPerThread;
constexpr index_t MaxNPerThread = 16 / sizeof(DataType);
return min(MaxNPerThread, ElemPerThread);
}
// alignment for dram lse tile (shape=[kMaxSplits, kM0])
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr auto GetAlignmentLSE()
{
return GetVectorSizeForTile<Problem::kBlockSize,
return GetVectorSizeForTile<Problem::kNumWarps,
Problem::kMaxSplits,
Problem::kM0,
typename Problem::LSEDataType>();
......@@ -56,40 +71,54 @@ struct BlockFmhaFwdSplitKVCombinePipelineDefaultPolicy
}
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr ck_tile::index_t GetSmemSize()
CK_TILE_HOST_DEVICE static constexpr ck_tile::index_t GetSmemSizeLSEacc()
{
return sizeof(typename Problem::LSEDataType) *
MakeLSEaccLdsBlockDescriptor<Problem>().get_element_space_size();
}
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr ck_tile::index_t GetSmemSizeOacc4()
{
return sizeof(typename Problem::OaccDataType) *
MakeOacc4LdsBlockDescriptor<Problem>().get_element_space_size();
}
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr ck_tile::index_t GetSmemSize()
{
return GetSmemSizeLSEacc<Problem>() + GetSmemSizeOacc4<Problem>();
}
// shape=[kMaxSplits, kM0]
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr auto MakeLSEaccDramTileDistribution()
{
using LSEDataType = remove_cvref_t<typename Problem::LSEDataType>;
constexpr index_t kBlockSize = Problem::kBlockSize;
constexpr index_t kNumWarps = Problem::kNumWarps;
constexpr index_t kNPerBlock = Problem::kM0;
constexpr index_t kMPerBlock = Problem::kMaxSplits;
constexpr index_t kNPerBlock = Problem::kM0;
constexpr index_t MaxNumWarps =
GetMaxNumWarpsForTile<Problem::kNumWarps, kNPerBlock, kMPerBlock, LSEDataType>();
constexpr index_t Replicate = Problem::kNumWarps / MaxNumWarps;
constexpr index_t NPerThread =
GetVectorSizeForTile<kBlockSize, kMPerBlock, kNPerBlock, LSEDataType>();
GetVectorSizeForTile<MaxNumWarps, kMPerBlock, kNPerBlock, LSEDataType>();
constexpr index_t NThreads = kNPerBlock / NPerThread;
constexpr index_t MThreadsPerWarp = get_warp_size() / NThreads;
constexpr index_t MPerThread = kMPerBlock / (kNumWarps * MThreadsPerWarp);
constexpr index_t MPerThread = kMPerBlock / (MaxNumWarps * MThreadsPerWarp);
static_assert(MPerThread * MaxNumWarps * MThreadsPerWarp == kMPerBlock);
static_assert(NThreads * NPerThread == kNPerBlock);
static_assert(MPerThread * kNumWarps * MThreadsPerWarp == kMPerBlock);
return make_static_tile_distribution(
tile_distribution_encoding<sequence<1>,
tuple<sequence<MPerThread, kNumWarps, MThreadsPerWarp>,
tile_distribution_encoding<sequence<Replicate>,
tuple<sequence<MPerThread, MaxNumWarps, MThreadsPerWarp>,
sequence<NThreads, NPerThread>>,
tuple<sequence<1>, sequence<1, 2>>,
tuple<sequence<1>, sequence<2, 0>>,
tuple<sequence<0, 1>, sequence<1, 2>>,
tuple<sequence<0, 1>, sequence<2, 0>>,
sequence<1, 2>,
sequence<0, 1>>{});
}
......@@ -100,17 +129,15 @@ struct BlockFmhaFwdSplitKVCombinePipelineDefaultPolicy
{
using LSEDataType = remove_cvref_t<typename Problem::LSEDataType>;
constexpr index_t kBlockSize = Problem::kBlockSize;
constexpr index_t kMPerBlock = Problem::kMaxSplits;
constexpr index_t kNPerBlock = Problem::kM0;
constexpr index_t kMPerBlock = Problem::kM0;
constexpr index_t kNPerBlock = Problem::kMaxSplits;
constexpr index_t NPack =
GetVectorSizeForTile<kBlockSize, kMPerBlock, kNPerBlock, LSEDataType>();
GetVectorSizeForTile<Problem::kNumWarps, kMPerBlock, kNPerBlock, LSEDataType>();
constexpr auto lse_acc_lds_block_desc_0 = make_naive_tensor_descriptor(
make_tuple(number<kNPerBlock / NPack>{}, number<kMPerBlock>{}, number<NPack>{}),
make_tuple(number<(kMPerBlock + 1) * NPack>{}, number<NPack>{}, number<1>{}),
number<8>{},
number<NPack>{},
number<1>{});
constexpr auto lse_acc_lds_block_desc = transform_tensor_descriptor(
......@@ -129,17 +156,15 @@ struct BlockFmhaFwdSplitKVCombinePipelineDefaultPolicy
{
using LSEDataType = remove_cvref_t<typename Problem::LSEDataType>;
constexpr index_t kBlockSize = Problem::kBlockSize;
constexpr index_t kMPerBlock = Problem::kMaxSplits;
constexpr index_t kNPerBlock = Problem::kM0;
constexpr index_t kMPerBlock = Problem::kM0;
constexpr index_t kNPerBlock = Problem::kMaxSplits;
constexpr index_t NPack =
GetVectorSizeForTile<kBlockSize, kMPerBlock, kNPerBlock, LSEDataType>();
GetVectorSizeForTile<Problem::kNumWarps, kMPerBlock, kNPerBlock, LSEDataType>();
constexpr auto lse_acc_lds_block_desc_0 = make_naive_tensor_descriptor(
make_tuple(number<kNPerBlock / NPack>{}, number<kMPerBlock>{}, number<NPack>{}),
make_tuple(number<(kMPerBlock + 1) * NPack>{}, number<NPack>{}, number<1>{}),
number<8>{},
number<NPack>{},
number<1>{});
constexpr auto lse_acc_t_lds_block_desc = transform_tensor_descriptor(
......@@ -152,33 +177,86 @@ struct BlockFmhaFwdSplitKVCombinePipelineDefaultPolicy
return lse_acc_t_lds_block_desc;
}
// 3d + padding, shape=[4 * kM0, kN1]
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr auto MakeLSEaccRegTileDistribution()
CK_TILE_HOST_DEVICE static constexpr auto MakeOacc4LdsBlockDescriptor()
{
constexpr index_t kBlockSize = Problem::kBlockSize;
using LSEDataType = remove_cvref_t<typename Problem::LSEDataType>;
constexpr index_t kNPerBlock = Problem::kMaxSplits;
constexpr index_t kMPerBlock = 4 * Problem::kM0;
constexpr index_t kNPerBlock = Problem::kN1;
constexpr index_t NPack =
GetVectorSizeForTile<Problem::kNumWarps, kMPerBlock, kNPerBlock, LSEDataType>();
constexpr auto o_acc_lds_block_desc_0 = make_naive_tensor_descriptor(
make_tuple(number<kNPerBlock / NPack>{}, number<kMPerBlock>{}, number<NPack>{}),
make_tuple(number<(kMPerBlock + 1) * NPack>{}, number<NPack>{}, number<1>{}),
number<8>{},
number<1>{});
constexpr auto o_acc_t_lds_block_desc = transform_tensor_descriptor(
o_acc_lds_block_desc_0,
make_tuple(make_pass_through_transform(kMPerBlock),
make_merge_transform(make_tuple(kNPerBlock / NPack, NPack))),
make_tuple(sequence<1>{}, sequence<0, 2>{}),
make_tuple(sequence<1>{}, sequence<0>{}));
return o_acc_t_lds_block_desc;
}
// shape=[kM0, kMaxSplits]
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr auto MakeLSEaccRegTileDistribution()
{
constexpr index_t kMPerBlock = Problem::kM0;
constexpr index_t kNPerBlock = Problem::kMaxSplits;
constexpr index_t NThreads = 4;
constexpr index_t NPerThread = kNPerBlock / NThreads;
constexpr index_t MaxNThreads = 8;
constexpr index_t NThreads = min(kNPerBlock, MaxNThreads);
constexpr index_t NPerThread = kNPerBlock / NThreads;
constexpr index_t MThreads = kBlockSize / NThreads;
constexpr index_t MPerThread = kMPerBlock / MThreads;
constexpr index_t MWarps = kBlockSize / get_warp_size();
constexpr index_t MPerThread = 1;
constexpr index_t MThreads = kMPerBlock / MPerThread;
constexpr index_t MThreadPerWarp = get_warp_size() / NThreads;
constexpr index_t MaxNumWarps = (MThreads * NThreads) / get_warp_size();
constexpr index_t Replicate = Problem::kNumWarps / MaxNumWarps;
static_assert(MaxNumWarps * MThreadPerWarp * MPerThread == kMPerBlock);
static_assert(NThreads * NPerThread == kNPerBlock);
static_assert(MWarps * MThreadPerWarp * MPerThread == kMPerBlock);
return make_static_tile_distribution(
tile_distribution_encoding<
sequence<1>,
tuple<sequence<MWarps, MThreadPerWarp, MPerThread>, sequence<NThreads, NPerThread>>,
tuple<sequence<1>, sequence<2, 1>>,
tuple<sequence<0>, sequence<0, 1>>,
sequence<1, 2>,
sequence<2, 1>>{});
tile_distribution_encoding<sequence<Replicate>,
tuple<sequence<MaxNumWarps, MThreadPerWarp, MPerThread>,
sequence<NThreads, NPerThread>>,
tuple<sequence<0, 1>, sequence<2, 1>>,
tuple<sequence<0, 0>, sequence<0, 1>>,
sequence<1, 2>,
sequence<2, 1>>{});
}
// similar to MakeOaccDramTileDistribution(), but duplicate same 1-warp encoding 4 times on M
// direction
template <typename Problem>
CK_TILE_HOST_DEVICE static constexpr auto MakeOacc4DramTileDistribution()
{
constexpr index_t kMPerBlock = Problem::kM0; // real kMPerBlock we want is (4 * kM0)
constexpr index_t kNPerBlock = Problem::kN1;
static_assert(get_warp_size() <= kMPerBlock * kNPerBlock);
constexpr index_t M1 = 1; // compose encoding base on 1 warp
constexpr index_t M2 = min(kMPerBlock / M1, get_warp_size());
constexpr index_t N0 = get_warp_size() / M2;
constexpr index_t N1 = kNPerBlock / N0;
constexpr index_t M0 = kMPerBlock / (M2 * M1);
return make_static_tile_distribution(
tile_distribution_encoding<sequence<1>,
tuple<sequence<4, M0, M1, M2>, sequence<N0, N1>>,
tuple<sequence<1, 1>, sequence<1, 2>>,
tuple<sequence<0, 2>, sequence<3, 0>>,
sequence<1, 2>,
sequence<1, 1>>{});
}
template <typename Problem>
......@@ -187,6 +265,7 @@ struct BlockFmhaFwdSplitKVCombinePipelineDefaultPolicy
constexpr index_t kBlockSize = Problem::kBlockSize;
constexpr index_t kMPerBlock = Problem::kM0;
constexpr index_t kNPerBlock = Problem::kN1;
static_assert(kBlockSize <= kMPerBlock * kNPerBlock);
constexpr index_t M1 = kBlockSize / get_warp_size();
constexpr index_t M2 = min(kMPerBlock / M1, get_warp_size());
......
include/ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_nwarp_sshuffle_qr_ks_vs.hpp 0 → 100644
View file @ c881136b
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include "ck_tile/core.hpp"
#include "ck_tile/ops/fmha/block/block_attention_bias_enum.hpp"
#include "ck_tile/ops/fmha/pipeline/block_fmha_fwd_splitkv_pipeline_nwarp_sshuffle_qr_ks_vs_default_policy.hpp"
#include "ck_tile/ops/reduce/block/block_reduce.hpp"
namespace ck_tile {
// This pipeline is qkv all located in LDS
template <typename Problem_,
typename Policy_ = BlockFmhaFwdSplitKVPipelineNWarpSShuffleQRKSVSDefaultPolicy>
struct BlockFmhaFwdSplitKVPipelineNWarpSShuffleQRKSVS
{
using Problem = remove_cvref_t<Problem_>;
using Policy = remove_cvref_t<Policy_>;
using QDataType = remove_cvref_t<typename Problem::QDataType>;
using KDataType = remove_cvref_t<typename Problem::KDataType>;
using VDataType = remove_cvref_t<typename Problem::VDataType>;
using SaccDataType = remove_cvref_t<typename Problem::SaccDataType>;
using SMPLComputeDataType = remove_cvref_t<typename Problem::SMPLComputeDataType>;
using BiasDataType = remove_cvref_t<typename Problem::BiasDataType>;
using LSEDataType = remove_cvref_t<typename Problem::LSEDataType>;
using PDataType = remove_cvref_t<typename Problem::PDataType>;
using OaccDataType = remove_cvref_t<typename Problem::OaccDataType>;
using ODataType = remove_cvref_t<typename Problem::ODataType>;
using FmhaMask = remove_cvref_t<typename Problem::FmhaMask>;
using BlockFmhaShape = remove_cvref_t<typename Problem::BlockFmhaShape>;
using VLayout = remove_cvref_t<typename BlockFmhaShape::VLayout>;
static constexpr bool kQLoadOnce = true; // if q_tile load whole block length (hdim) at once
static_assert(kQLoadOnce == Policy::QLoadOnce);
static constexpr index_t kBlockSize = Problem::kBlockSize;
static constexpr index_t kM0 = BlockFmhaShape::kM0;
static constexpr index_t kN0 = BlockFmhaShape::kN0;
static constexpr index_t kK0 = BlockFmhaShape::kK0;
static constexpr index_t kN1 = BlockFmhaShape::kN1;
static constexpr index_t kK1 = BlockFmhaShape::kK1;
static constexpr index_t kQKHeaddim = BlockFmhaShape::kQKHeaddim;
static constexpr index_t kSubQKHeaddim = BlockFmhaShape::kSubQKHeaddim;
static constexpr bool kIsGroupMode = Problem::kIsGroupMode;
static constexpr bool kPadSeqLenQ = Problem::kPadSeqLenQ;
static constexpr bool kPadSeqLenK = Problem::kPadSeqLenK;
static constexpr bool kPadHeadDimQ = Problem::kPadHeadDimQ;
static constexpr bool kPadHeadDimV = Problem::kPadHeadDimV;
static constexpr auto BiasEnum = Problem::BiasEnum;
static constexpr bool kStoreLSE = Problem::kStoreLSE;
static constexpr bool kIsPagedKV = Problem::kIsPagedKV;
static constexpr bool kHasUnevenSplits = Problem::kHasUnevenSplits;
// last dimension vector length used to create tensor view(and decide buffer_load vector length)
// ... together with tensor distribution. tensor dist should able to overwrite this
static constexpr index_t kAlignmentQ =
kPadHeadDimQ ? 1 : Policy::template GetAlignmentQ<Problem>();
static constexpr index_t kAlignmentK =
kPadHeadDimQ ? 1 : Policy::template GetAlignmentK<Problem>();
static constexpr index_t kAlignmentV = []() {
if constexpr(std::is_same_v<VLayout, ck_tile::tensor_layout::gemm::RowMajor>)
return kPadHeadDimV ? 1 : Policy::template GetAlignmentV<Problem>();
else
return kPadSeqLenK ? 1 : Policy::template GetAlignmentV<Problem>();
}();
static constexpr index_t kAlignmentOacc =
kPadHeadDimV ? 1 : Policy::template GetAlignmentOacc<Problem>();
static constexpr index_t kAlignmentBias =
kPadSeqLenK ? 1 : Policy::template GetAlignmentBias<Problem>();
static constexpr index_t kBlockPerCu = []() {
if constexpr(Problem::kBlockPerCu != -1)
return Problem::kBlockPerCu;
else
{
if constexpr(kQKHeaddim <= 32)
{
return 2;
}
else if constexpr(kQKHeaddim <= 64)
{
return 3;
}
else if constexpr(kQKHeaddim <= 128)
{
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS)
return 1;
else
return 2;
}
else if constexpr(kQKHeaddim <= 256)
{
return 1;
}
}
}();
static constexpr const char* name = "qr_nwarp_sshuffle";
CK_TILE_HOST_DEVICE static constexpr ck_tile::index_t GetSmemSize()
{
return Policy::template GetSmemSize<Problem>();
}
template <typename QDramBlockWindowTmp,
typename KDramBlockWindowLengths,
typename KPageBlockNavigator,
typename VDramBlockWindowLengths,
typename VPageBlockNavigator,
typename BiasDramBlockWindowTmp,
typename LSEaccDramBlockWindowTmp,
typename QElementFunction,
typename KElementFunction,
typename VElementFunction,
typename BiasElementFunction,
typename LSEaccElementFunction,
typename SAccElementFunction,
typename PComputeElementFunction,
typename OAccElementFunction,
typename PositionEncoding>
CK_TILE_HOST_DEVICE auto
operator()(const QDramBlockWindowTmp& q_dram_block_window_tmp, // M0*K0 tile
const QElementFunction& q_element_func,
const KDramBlockWindowLengths& k_dram_block_window_lengths, // N0*K0 tile
const KPageBlockNavigator& k_page_block_navigator,
const KElementFunction& k_element_func,
const VDramBlockWindowLengths& v_dram_block_window_lengths, // N1*K1 tile
const VPageBlockNavigator& v_page_block_navigator,
const VElementFunction& v_element_func,
const BiasDramBlockWindowTmp& bias_dram_block_window_tmp, // M0*N0 tile
const BiasElementFunction& bias_element_func,
LSEaccDramBlockWindowTmp& lse_acc_dram_window_tmp, // M0*1 tile
const LSEaccElementFunction& lse_acc_element_func,
const SAccElementFunction& s_acc_element_func,
const PComputeElementFunction& p_compute_element_func,
const OAccElementFunction& o_acc_element_func,
index_t num_splits,
index_t i_split,
FmhaMask mask,
PositionEncoding position_encoding,
float scale_s,
index_t kv_l2p_offset, // logical-to-physical offset of seqlen_k coordinate
void* smem_ptr) const
{
static_assert(
std::is_same_v<QDataType, remove_cvref_t<typename QDramBlockWindowTmp::DataType>> &&
std::is_same_v<KDataType, remove_cvref_t<typename KPageBlockNavigator::DataType>> &&
std::is_same_v<VDataType, remove_cvref_t<typename VPageBlockNavigator::DataType>>,
"wrong!");
static_assert(kM0 == QDramBlockWindowTmp{}.get_window_lengths()[number<0>{}] &&
kSubQKHeaddim ==
QDramBlockWindowTmp{}.get_window_lengths()[number<1>{}] &&
kN0 == KDramBlockWindowLengths{}[number<0>{}] &&
kK0 == KDramBlockWindowLengths{}[number<1>{}] &&
kN1 == VDramBlockWindowLengths{}[number<0>{}] &&
kK1 == VDramBlockWindowLengths{}[number<1>{}] &&
kM0 == BiasDramBlockWindowTmp{}.get_window_lengths()[number<0>{}] &&
kN0 == BiasDramBlockWindowTmp{}.get_window_lengths()[number<1>{}],
"wrong!");
// Q tile in LDS
QDataType* q_lds_ptr =
static_cast<QDataType*>(static_cast<void*>(static_cast<char*>(smem_ptr)));
auto q_lds = make_tensor_view<address_space_enum::lds>(
q_lds_ptr, Policy::template MakeQLdsBlockDescriptor<Problem>());
// K tile in LDS
KDataType* k_lds_ptr =
static_cast<KDataType*>(static_cast<void*>(static_cast<char*>(smem_ptr)));
auto k_lds = make_tensor_view<address_space_enum::lds>(
k_lds_ptr, Policy::template MakeKLdsBlockDescriptor<Problem>());
auto k_lds_window =
make_tile_window(k_lds, make_tuple(number<kN0>{}, number<kK0>{}), {0, 0});
// V tile in LDS
auto v_lds = make_tensor_view<address_space_enum::lds>(
reinterpret_cast<VDataType*>(static_cast<char*>(smem_ptr) +
max(Policy::template GetSmemSizeQ<Problem>(),
Policy::template GetSmemSizeK<Problem>())),
Policy::template MakeVLdsBlockDescriptor<Problem>());
auto v_lds_window = make_tile_window(
v_lds, Policy::template MakeVLdsBlockDescriptor<Problem>().get_lengths(), {0, 0});
// S tile in LDS
auto s_lds = make_tensor_view<address_space_enum::lds>(
reinterpret_cast<SaccDataType*>(reinterpret_cast<char*>(smem_ptr) +
max(Policy::template GetSmemSizeQ<Problem>(),
Policy::template GetSmemSizeK<Problem>())),
Policy::template MakeSLdsBlockDescriptor<Problem>());
auto s_write_lds_window = make_tile_window(
s_lds, Policy::template MakeSLdsBlockDescriptor<Problem>().get_lengths(), {0, 0});
auto s_read_lds_window =
make_tile_window(s_lds,
Policy::template MakeSLdsBlockDescriptor<Problem>().get_lengths(),
{0, 0},
Policy::template MakeSRegTileDistribution<Problem>());
// Block GEMM
constexpr auto gemm_0 = Policy::template GetQKBlockGemm<Problem>();
constexpr auto gemm_1 = Policy::template GetKVBlockGemm<Problem>();
auto q_dram_window =
make_tile_window(q_dram_block_window_tmp.get_bottom_tensor_view(),
q_dram_block_window_tmp.get_window_lengths(),
q_dram_block_window_tmp.get_window_origin(),
Policy::template MakeQDramTileDistribution<Problem>());
// load Q here, will store Q into LDS to maximize throughput
auto origin_q = load_tile(q_dram_window);
using SaccBlockTileType = decltype(gemm_0.MakeCBlockTile());
auto s_acc = SaccBlockTileType{};
// reduction function for softmax
const auto f_max = [](auto e0, auto e1) { return max(e0, e1); };
const auto f_sum = [](auto e0, auto e1) { return e0 + e1; };
using OaccBlockTileType = decltype(gemm_1.MakeCBlockTile());
auto o_acc = OaccBlockTileType{};
// infer Sacc, S, P, M, L, Oacc type
using SBlockTileType = decltype(cast_tile<SMPLComputeDataType>(o_acc));
using MLBlockTileType = decltype(block_tile_reduce<SMPLComputeDataType>(
SBlockTileType{}, sequence<1>{}, f_max, SMPLComputeDataType{0}));
// init M, L
auto m = MLBlockTileType{};
auto l = MLBlockTileType{};
clear_tile(o_acc);
set_tile(m, -numeric<SMPLComputeDataType>::infinity());
clear_tile(l);
const auto q_origin = q_dram_window.get_window_origin();
const auto [logical_seqlen_k_start, logical_seqlen_k_end] = mask.GetTileRangeAlongX(
q_origin.at(number<0>{}), number<kM0>{}, number<kN0>{}, num_splits, i_split);
// check early exit if no work to do
if constexpr(FmhaMask::IsMasking || kPadSeqLenK || kHasUnevenSplits)
{
const index_t logical_num_total_loop =
integer_divide_ceil(logical_seqlen_k_end - logical_seqlen_k_start, kN0);
if(logical_num_total_loop <= 0)
{
if constexpr(kStoreLSE)
{
auto lse_acc =
make_static_distributed_tensor<LSEDataType>(m.get_tile_distribution());
set_tile(lse_acc, -numeric<SMPLComputeDataType>::infinity());
if(get_thread_local_1d_id() < kM0)
{
store_tile(lse_acc_dram_window_tmp,
tile_elementwise_in(lse_acc_element_func, lse_acc));
}
}
// Note: here occ are all cleard, return it
// Note: q loaded but no fence, ignore it.
return o_acc;
}
}
const index_t physical_seqlen_k_start = logical_seqlen_k_start + kv_l2p_offset;
const index_t physical_seqlen_k_end = logical_seqlen_k_end + kv_l2p_offset;
// make sure the first tile is completely located in page-block (page-block size should be
// divisible by kN0)
// relationship between each *_start variables: aligned_physical_seqlen_k_start <=
// physical_seqlen_k_start, logical_seqlen_k_start <= physical_seqlen_k_start
const index_t aligned_physical_seqlen_k_start =
[&, physical_seqlen_k_start_ = physical_seqlen_k_start] {
if constexpr(kIsPagedKV)
{
return kN0 * integer_divide_floor(physical_seqlen_k_start_, kN0);
}
else
{
return physical_seqlen_k_start_;
}
}();
const index_t num_total_loop =
integer_divide_ceil(physical_seqlen_k_end - aligned_physical_seqlen_k_start, kN0);
auto [i_page_block_k, k_dram_block_window] = k_page_block_navigator.make_tile_window(
k_dram_block_window_lengths, {aligned_physical_seqlen_k_start, 0});
const auto bias_origin = bias_dram_block_window_tmp.get_window_origin();
auto bias_dram_window =
make_tile_window(bias_dram_block_window_tmp.get_bottom_tensor_view(),
bias_dram_block_window_tmp.get_window_lengths(),
{bias_origin.at(number<0>{}),
logical_seqlen_k_start - (physical_seqlen_k_start -
aligned_physical_seqlen_k_start)}, // M/N
Policy::template MakeBiasDramTileDistribution<decltype(gemm_0)>());
auto [i_page_block_v, v_dram_window] = v_page_block_navigator.make_tile_window(
v_dram_block_window_lengths,
{0, aligned_physical_seqlen_k_start}, // TODO: hdim split?
Policy::template MakeVDramTileDistribution<Problem>());
// store Q into LDS
__builtin_amdgcn_sched_barrier(0);
auto q_lds_window_for_store = make_tile_window(
q_lds, Policy::template MakeQLdsBlockDescriptor<Problem>().get_lengths(), {0, 0});
store_tile(q_lds_window_for_store, origin_q);
__builtin_amdgcn_sched_barrier(0);
// load Q from LDS
__builtin_amdgcn_sched_barrier(0);
auto q_lds_window_for_load = make_tile_window(
q_lds,
Policy::template MakeQLdsBlockDescriptor<Problem>().get_lengths(),
{0, 0},
Policy::template MakeQRegTileDistribution<Problem, decltype(gemm_0)>());
block_sync_lds();
auto q = load_tile(q_lds_window_for_load);
__builtin_amdgcn_sched_barrier(0);
auto q_tile = tile_elementwise_in(q_element_func, q);
// prefetch K tile
index_t i_total_loops = 0;
constexpr index_t k0_loops = kQKHeaddim / kK0;
constexpr index_t k1_loops = kN0 / kK1;
static_assert(2 <= k0_loops);
static_assert(1 <= k1_loops);
auto k_dram_window = make_tile_window(
k_dram_block_window,
Policy::template MakeKDramTileDistribution<Problem>()); // K DRAM tile window for
// load the first tile of the first iteration and store to LDS
auto k_block_tile = load_tile(k_dram_window);
// moving k_dram_window is an in-page-block operation, so there is
// no need to invoke k_page_block_navigator.move_tile_window() here.
move_tile_window(k_dram_window, {0, kK0});
store_tile(k_lds_window, tile_elementwise_in(k_element_func, k_block_tile));
do
{
// STAGE 1, QK gemm
clear_tile(s_acc); // initialize C
// load the second tile of the first iteration
k_block_tile = load_tile(k_dram_window);
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS)
{
__builtin_amdgcn_sched_barrier(
0); // prevent from messing up the order of global loads
}
const auto bias_tile = load_tile(bias_dram_window); // load bias tile
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS)
{
__builtin_amdgcn_sched_barrier(
0); // prevent from messing up the order of global loads
}
if constexpr(k0_loops > 2)
{
static_for<0, k0_loops - 2, 1>{}([&](auto i_k0) {
block_sync_lds();
gemm_0(s_acc,
get_slice_tile(q_tile,
sequence<0, i_k0 * kK0>{},
sequence<kM0, (i_k0 + 1) * kK0>{}),
k_lds_window);
block_sync_lds();
move_tile_window(k_dram_window, {0, kK0});
store_tile(
k_lds_window,
tile_elementwise_in(k_element_func, k_block_tile)); // LDS write i + 1
k_block_tile = load_tile(k_dram_window); // global read i + 2
});
}
const auto v_prefetch = load_tile(v_dram_window); // prefetch load v tile
{ // tail
block_sync_lds();
gemm_0(s_acc,
get_slice_tile(q_tile,
sequence<0, (k0_loops - 2) * kK0>{},
sequence<kM0, (k0_loops - 1) * kK0>{}),
k_lds_window);
block_sync_lds();
store_tile(k_lds_window, tile_elementwise_in(k_element_func, k_block_tile));
block_sync_lds();
gemm_0(s_acc,
get_slice_tile(q_tile,
sequence<0, (k0_loops - 1) * kK0>{},
sequence<kM0, k0_loops * kK0>{}),
k_lds_window);
}
// STAGE 2, scale_s, add bias, mask, softmax
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS)
{
s_acc = tile_elementwise_in(s_acc_element_func, s_acc);
tile_elementwise_inout([&scale_s](auto& x) { x = x * scale_s; }, s_acc);
tile_elementwise_inout(
[&](auto& x, const auto& y) {
#if !CK_TILE_FMHA_FWD_FAST_EXP2
x += type_convert<SaccDataType>(bias_element_func(y));
#else
x += log2e_v<SaccDataType> *
type_convert<SaccDataType>(bias_element_func(y));
#endif
},
s_acc,
bias_tile);
}
else if constexpr(BiasEnum == BlockAttentionBiasEnum::ALIBI)
{
const auto k_origin = k_page_block_navigator.to_global_window_origin(
i_page_block_k, k_dram_block_window.get_window_origin());
constexpr auto s_spans = decltype(s_acc)::get_distributed_spans();
s_acc = tile_elementwise_in(s_acc_element_func, s_acc);
sweep_tile_span(s_spans[number<0>{}], [&](auto idx0) {
sweep_tile_span(s_spans[number<1>{}], [&](auto idx1) {
const auto tile_idx = get_x_indices_from_distributed_indices(
s_acc.get_tile_distribution(), make_tuple(idx0, idx1));
const auto row = q_origin.at(number<0>{}) + tile_idx.at(number<0>{});
const auto col = k_origin.at(number<0>{}) + tile_idx.at(number<1>{});
constexpr auto i_j_idx = make_tuple(idx0, idx1);
s_acc(i_j_idx) *= scale_s;
// position_encoding accept only logical coordinates, do conversion here
position_encoding.update(s_acc(i_j_idx), row, col - kv_l2p_offset);
});
});
}
else
{
s_acc = tile_elementwise_in(s_acc_element_func, s_acc);
#if !CK_TILE_FMHA_FWD_FAST_EXP2
tile_elementwise_inout([&scale_s](auto& x) { x = x * scale_s; }, s_acc);
#endif
}
move_tile_window(bias_dram_window, {0, kN0});
/// TODO: only check in first/last iteration without increasing code size
if constexpr(kHasUnevenSplits)
{
const auto k_origin = k_page_block_navigator.to_global_window_origin(
i_page_block_k, k_dram_block_window.get_window_origin());
set_tile_if(
s_acc,
-numeric<SMPLComputeDataType>::infinity(),
[&,
physical_seqlen_k_start_ = physical_seqlen_k_start,
physical_seqlen_k_end_ = physical_seqlen_k_end](auto tile_idx) {
const auto col = k_origin.at(number<0>{}) + tile_idx.at(number<1>{});
if constexpr(kIsPagedKV)
{
return col < physical_seqlen_k_start_ || physical_seqlen_k_end_ <= col;
}
else
{
return physical_seqlen_k_end_ <= col;
}
});
}
if constexpr(kPadSeqLenK || FmhaMask::IsMasking)
{
const auto k_origin = k_page_block_navigator.to_global_window_origin(
i_page_block_k, k_dram_block_window.get_window_origin());
// mask accept only logical coordinates, do conversion here
bool need_perpixel_check = mask.IsEdgeTile(q_origin.at(number<0>{}),
k_origin.at(number<0>{}) - kv_l2p_offset,
number<kM0>{},
number<kN0>{});
if(need_perpixel_check)
{
set_tile_if(
s_acc, -numeric<SMPLComputeDataType>::infinity(), [&](auto tile_idx) {
const auto row = q_origin.at(number<0>{}) + tile_idx.at(number<0>{});
const auto col = k_origin.at(number<0>{}) + tile_idx.at(number<1>{});
return mask.IsOutOfBound(row, col - kv_l2p_offset);
});
}
}
__builtin_amdgcn_sched_barrier(0);
// load the first tile for next iteration
if(i_total_loops < num_total_loop - 1)
{
// move K tile windows
i_page_block_k = k_page_block_navigator.move_tile_window(
i_page_block_k, k_dram_block_window, {kN0, 0});
k_dram_window = make_tile_window(
k_dram_block_window,
Policy::template MakeKDramTileDistribution<Problem>()); // K DRAM tile window
// laod the first tile of the first iteration and store to LDS
k_block_tile = load_tile(k_dram_window);
}
__builtin_amdgcn_sched_barrier(0);
const auto s = cast_tile<SMPLComputeDataType>(s_acc); // S{j}
// shuffle through LDS so that the tile layout is consistent with required by Gemm1
store_tile(s_write_lds_window, s);
block_sync_lds();
auto s_new = load_tile(s_read_lds_window);
auto m_local = block_tile_reduce<SMPLComputeDataType>(
s_new,
sequence<1>{},
f_max,
-numeric<SMPLComputeDataType>::infinity()); // m_local = rowmax(S{j})
block_tile_reduce_sync(m_local, f_max, bool_constant<false>{});
const auto m_old = m; // m{j-1}
tile_elementwise_inout(
[](auto& e0, auto e1, auto e2) { e0 = max(e1, e2); }, m, m_old, m_local); // m{j}
auto p_compute = make_static_distributed_tensor<SMPLComputeDataType>(
s_new.get_tile_distribution()); // Pcompute{j}
static const auto get_validated_m = [](SMPLComputeDataType raw_m) {
/// NOTICE: bias might be materialized mask including -inf values, need
/// consideration
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS ||
FmhaMask::IsMasking)
{
return raw_m == -numeric<SMPLComputeDataType>::infinity()
? type_convert<SMPLComputeDataType>(0.f)
: raw_m;
}
else
{
return raw_m;
}
};
constexpr auto p_spans = decltype(p_compute)::get_distributed_spans();
sweep_tile_span(p_spans[number<0>{}], [&](auto idx0) {
constexpr auto i_idx = make_tuple(idx0);
#if CK_TILE_FMHA_FWD_FAST_EXP2
auto row_max = scale_s * get_validated_m(m[i_idx]);
#endif
sweep_tile_span(p_spans[number<1>{}], [&](auto idx1) {
constexpr auto i_j_idx = make_tuple(idx0, idx1);
#if CK_TILE_FMHA_FWD_FAST_EXP2
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS ||
BiasEnum == BlockAttentionBiasEnum::ALIBI)
{
p_compute(i_j_idx) = exp2(s_new[i_j_idx] - get_validated_m(m[i_idx]));
}
else
{
p_compute(i_j_idx) = exp2(scale_s * s_new[i_j_idx] - row_max);
}
#else
p_compute(i_j_idx) = exp(s_new[i_j_idx] - get_validated_m(m[i_idx]));
#endif
});
});
auto rowsum_p = block_tile_reduce<SMPLComputeDataType>(
p_compute, sequence<1>{}, f_sum, SMPLComputeDataType{0}); // rowsum(Pcompute{j})
block_tile_reduce_sync(rowsum_p, f_sum, bool_constant<false>{});
const auto p =
cast_tile<PDataType>(tile_elementwise_in(p_compute_element_func, p_compute));
// l{j}, Oacc{j}
constexpr auto o_spans = decltype(o_acc)::get_distributed_spans();
sweep_tile_span(o_spans[number<0>{}], [&](auto idx0) {
constexpr auto i_idx = make_tuple(idx0);
#if CK_TILE_FMHA_FWD_FAST_EXP2
const auto tmp = [&]() {
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS ||
BiasEnum == BlockAttentionBiasEnum::ALIBI)
{
return exp2(m_old[i_idx] - get_validated_m(m[i_idx]));
}
else
{
auto row_max = scale_s * get_validated_m(m[i_idx]);
return exp2(scale_s * m_old[i_idx] - row_max);
}
}();
#else
const auto tmp = exp(m_old[i_idx] - get_validated_m(m[i_idx]));
#endif
l(i_idx) = tmp * l[i_idx] + rowsum_p[i_idx];
sweep_tile_span(o_spans[number<1>{}], [&](auto idx1) {
constexpr auto i_j_idx = make_tuple(idx0, idx1);
// FIXME: this use different equation from FA v2 paper,
// but produce correc result.
// Is the equation wrong?
o_acc(i_j_idx) *= tmp;
});
});
block_sync_lds();
if constexpr(std::is_same_v<VLayout, ck_tile::tensor_layout::gemm::RowMajor>)
{
auto v_shuffle_tmp = make_static_distributed_tensor<VDataType>(
Policy::template MakeShuffledVRegBlockDescriptor<Problem>());
shuffle_tile(v_shuffle_tmp, v_prefetch);
store_tile(
v_lds_window,
tile_elementwise_in(v_element_func, v_shuffle_tmp)); // store the prefetch
}
else
{
store_tile(v_lds_window,
tile_elementwise_in(v_element_func, v_prefetch)); // store the prefetch
}
i_page_block_v =
v_page_block_navigator.move_tile_window(i_page_block_v, v_dram_window, {0, kK1});
// STAGE 3, KV gemm
if constexpr(k1_loops > 1)
{
static_for<0, k1_loops - 1, 1>{}([&,
&i_page_block_v_ = i_page_block_v,
&v_dram_window_ = v_dram_window](auto i_k1) {
const auto v = load_tile(v_dram_window_); // load next v
block_sync_lds();
gemm_1(o_acc,
get_slice_tile(
p, sequence<0, i_k1 * kK1>{}, sequence<kM0, (i_k1 + 1) * kK1>{}),
v_lds_window);
block_sync_lds();
if constexpr(std::is_same_v<VLayout, ck_tile::tensor_layout::gemm::RowMajor>)
{
auto v_shuffle_tmp = make_static_distributed_tensor<VDataType>(
Policy::template MakeShuffledVRegBlockDescriptor<Problem>());
shuffle_tile(v_shuffle_tmp, v);
store_tile(v_lds_window,
tile_elementwise_in(v_element_func,
v_shuffle_tmp)); // store the prefetch
}
else
{
store_tile(v_lds_window,
tile_elementwise_in(v_element_func, v)); // store next v
}
i_page_block_v_ = v_page_block_navigator.move_tile_window(
i_page_block_v_, v_dram_window_, {0, kK1});
});
}
// tail
{
block_sync_lds();
gemm_1(o_acc,
get_slice_tile(
p, sequence<0, (k1_loops - 1) * kK1>{}, sequence<kM0, k1_loops * kK1>{}),
v_lds_window);
block_sync_lds();
}
__builtin_amdgcn_sched_barrier(0);
// load the first tile for next iteration
if(i_total_loops < num_total_loop - 1)
{
// store the first tile for next iteration to LDS
// moving k_dram_window is an in-page-block operation, so there is
// no need to invoke k_page_block_navigator.move_tile_window() here.
move_tile_window(k_dram_window, {0, kK0});
store_tile(k_lds_window, tile_elementwise_in(k_element_func, k_block_tile));
}
} while(++i_total_loops < num_total_loop);
if constexpr(kStoreLSE)
{
// store lse acc
auto lse_acc = make_static_distributed_tensor<LSEDataType>(m.get_tile_distribution());
constexpr auto lse_acc_spans = decltype(lse_acc)::get_distributed_spans();
sweep_tile_span(lse_acc_spans[number<0>{}], [&, m_ = m, l_ = l](auto idx0) {
constexpr auto i_idx = make_tuple(idx0);
#if CK_TILE_FMHA_FWD_FAST_EXP2
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS ||
BiasEnum == BlockAttentionBiasEnum::ALIBI)
{
lse_acc(i_idx) = m_[i_idx] / C_LOG2E + log(l_[i_idx]);
}
else
{
lse_acc(i_idx) = m_[i_idx] * scale_s / C_LOG2E + log(l_[i_idx]);
}
#else
lse_acc(i_idx) = m_[i_idx] + log(l_[i_idx]);
#endif
});
if(get_thread_local_1d_id() < kM0)
{
store_tile(lse_acc_dram_window_tmp,
tile_elementwise_in(lse_acc_element_func, lse_acc));
}
}
// finally, O
constexpr auto o_spans = decltype(o_acc)::get_distributed_spans();
sweep_tile_span(o_spans[number<0>{}], [&](auto idx0) {
constexpr auto i_idx = make_tuple(idx0);
const auto tmp = [&]() {
if constexpr(BiasEnum == BlockAttentionBiasEnum::ELEMENTWISE_BIAS ||
FmhaMask::IsMasking)
{
return l[i_idx] == 0.f ? 0.f : 1 / l[i_idx];
}
else
return 1 / l[i_idx];
}();
sweep_tile_span(o_spans[number<1>{}], [&](auto idx1) {
constexpr auto i_j_idx = make_tuple(idx0, idx1);
o_acc(i_j_idx) *= tmp;
});
});
o_acc = tile_elementwise_in(o_acc_element_func, o_acc);
return o_acc;
}
template <typename QDramBlockWindowTmp,
typename KDramBlockWindowLengths,
typename KPageBlockNavigator,
typename VDramBlockWindowLengths,
typename VPageBlockNavigator,
typename BiasDramBlockWindowTmp,
typename LSEaccDramBlockWindowTmp,
typename PositionEncoding>
CK_TILE_HOST_DEVICE auto
operator()(const QDramBlockWindowTmp& q_dram_block_window_tmp, // M0*K0 tile
const KDramBlockWindowLengths& k_dram_block_window_lengths, // N0*K0 tile
const KPageBlockNavigator& k_page_block_navigator,
const VDramBlockWindowLengths& v_dram_block_window_lengths, // N1*K1 tile
const VPageBlockNavigator& v_page_block_navigator,
const BiasDramBlockWindowTmp& bias_dram_block_window_tmp, // M0*N0 tile
LSEaccDramBlockWindowTmp& lse_acc_dram_block_window_tmp, // M0*1 tile
index_t num_splits,
index_t i_split,
FmhaMask mask,
PositionEncoding position_encoding,
float scale_s,
index_t kv_l2p_offset, // logical-to-physical offset of seqlen_k coordinate
void* smem_ptr) const
{
return operator()(q_dram_block_window_tmp,
identity{},
k_dram_block_window_lengths,
k_page_block_navigator,
identity{},
v_dram_block_window_lengths,
v_page_block_navigator,
identity{},
bias_dram_block_window_tmp,
identity{},
lse_acc_dram_block_window_tmp,
identity{},
identity{},
identity{},
identity{},
num_splits,
i_split,
mask,
position_encoding,
scale_s,
kv_l2p_offset,
smem_ptr);
}
};
} // namespace ck_tile
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