Update CK Kernel generation and update ck submodule (#157964)

changes required to reduce the number of ck kernels generated. This change depends on https://github.com/ROCm/composable_kernel/pull/2480 to be merged first.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/157964
Approved by: https://github.com/842974287
This commit is contained in:
Andy Lugo
2025-08-01 22:24:27 +00:00
committed by PyTorch MergeBot
parent df9720b8b5
commit 06d28de17a
11 changed files with 66 additions and 1629 deletions

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@ -439,6 +439,7 @@ if(USE_ROCM)
list(APPEND ATen_HIP_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/hip)
list(APPEND ATen_HIP_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/../../../third_party/composable_kernel/include)
list(APPEND ATen_HIP_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/../../../third_party/composable_kernel/library/include)
list(APPEND ATen_HIP_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/../../../third_party/composable_kernel/example/ck_tile/01_fmha)
list(APPEND ATen_HIP_INCLUDE ${CMAKE_CURRENT_BINARY_DIR}/composable_kernel)
list(APPEND ATen_HIP_INCLUDE ${CMAKE_CURRENT_SOURCE_DIR}/../../../third_party/aiter/csrc/include)
_pytorch_rocm_generate_ck_conf()

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@ -1,7 +1,7 @@
# generate a list of kernels, but not actually emit files at config stage
execute_process(
COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py
--api fwd --receipt 600 --list_blobs ${CMAKE_CURRENT_LIST_DIR}/fwd_blob_list.txt
--api fwd --receipt 4 --list_blobs ${CMAKE_CURRENT_LIST_DIR}/fwd_blob_list.txt
RESULT_VARIABLE ret
)
@ -11,7 +11,27 @@ endif()
execute_process(
COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py
--api bwd --receipt 600 --list_blobs ${CMAKE_CURRENT_LIST_DIR}/bwd_blob_list.txt
--api fwd_splitkv --receipt 4 --list_blobs ${CMAKE_CURRENT_LIST_DIR}/fwd_splitkv_blob_list.txt
RESULT_VARIABLE ret
)
if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to generate a list of FWD_SPLITKV kernels via Python.")
endif()
execute_process(
COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py
--api fwd_appendkv --receipt 4 --list_blobs ${CMAKE_CURRENT_LIST_DIR}/fwd_appendkv_blob_list.txt
RESULT_VARIABLE ret
)
if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to generate a list of FWD_APPENDKV kernels via Python.")
endif()
execute_process(
COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py
--api bwd --receipt 4 --list_blobs ${CMAKE_CURRENT_LIST_DIR}/bwd_blob_list.txt
RESULT_VARIABLE ret
)
@ -19,15 +39,29 @@ if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to generate a list of BWD kernels via Python.")
endif()
# Generate the files for both fwd and bwd
execute_process(COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py --api fwd --receipt 600 --output_dir ${CMAKE_CURRENT_LIST_DIR}
# Generate the files for both fwd, fwd_splitkv, fwd_appendkv, and bwd
execute_process(COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py --api fwd --receipt 4 --output_dir ${CMAKE_CURRENT_LIST_DIR}
)
if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to generate FWD kernels.")
endif()
execute_process(COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py --api bwd --receipt 600 --output_dir ${CMAKE_CURRENT_LIST_DIR}
execute_process(COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py --api fwd_splitkv --receipt 4 --output_dir ${CMAKE_CURRENT_LIST_DIR}
)
if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to generate FWD_SPLITKV kernels.")
endif()
execute_process(COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py --api fwd_appendkv --receipt 4 --output_dir ${CMAKE_CURRENT_LIST_DIR}
)
if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to generate FWD_APPENDKV kernels.")
endif()
execute_process(COMMAND python3 ${CMAKE_SOURCE_DIR}/third_party/composable_kernel/example/ck_tile/01_fmha/generate.py --api bwd --receipt 4 --output_dir ${CMAKE_CURRENT_LIST_DIR}
RESULT_VARIABLE ret
)
@ -44,6 +78,22 @@ if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to change make_kernel to make_kernel_pt for the fwd pass")
endif()
execute_process(
COMMAND bash -c "${CMAKE_CURRENT_LIST_DIR}/add_make_kernel_pt.sh ${CMAKE_CURRENT_LIST_DIR}/fwd_splitkv_blob_list.txt"
RESULT_VARIABLE ret)
if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to change make_kernel to make_kernel_pt for the fwd_splitkv pass")
endif()
execute_process(
COMMAND bash -c "${CMAKE_CURRENT_LIST_DIR}/add_make_kernel_pt.sh ${CMAKE_CURRENT_LIST_DIR}/fwd_appendkv_blob_list.txt"
RESULT_VARIABLE ret)
if(ret AND NOT ret EQUAL 0)
message( FATAL_ERROR "CK Tile FMHA FAILED to change make_kernel to make_kernel_pt for the fwd appendkv pass")
endif()
# Change make_kernel to make_kernel_pt for bwd
execute_process(
COMMAND bash -c "${CMAKE_CURRENT_LIST_DIR}/add_make_kernel_pt.sh ${CMAKE_CURRENT_LIST_DIR}/bwd_blob_list.txt"

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@ -21,6 +21,8 @@ while IFS= read -r file; do
if [ -f "$file" ]; then
# Use sed to replace "make_kernel" with "make_kernel_pt" in place
sed -i 's/make_kernel/make_kernel_pt/g' "$file"
sed -i 's/\#include \"fmha_fwd.hpp\"/\#include \"fmha_fwd.hpp\"\n\#include \"launch_kernel_pt.hpp\"/g' "$file"
sed -i 's/\#include \"fmha_bwd.hpp\"/\#include \"fmha_bwd.hpp\"\n\#include \"launch_kernel_pt.hpp\"/g' "$file"
echo "Updated: $file"
else
echo "Skipping: $file (not found)"

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@ -1,100 +0,0 @@
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include <ostream>
#include <string>
#include <ck_tile/core.hpp>
#include <ck_tile/ops/fmha.hpp>
// keep sync with BlockAttentionBiasEnum
enum class bias_enum
{
no_bias = 0,
elementwise_bias = 1,
alibi = 2,
};
struct bias_info
{
bias_enum type;
/*
* simple dispatch logic
*
* if type == elementwise_bias:
* if rank_info == 0:
* bias is 1*1*s*s
* elif rank_info == 1:
* bias is 1*h*s*s
* elif rank_info == 2:
* bias is b*h*s*s
*
* elif type == alibi:
* if rank_info == 0:
* alibi in 1*h
* elif rank_info == 1:
* alibi in b*h
*/
int rank_info;
void serialize(std::ostream& os) const
{
if(type == bias_enum::no_bias)
os << "n";
else if(type == bias_enum::elementwise_bias)
{
os << "e";
if(rank_info != 0)
{
os << "[" << rank_info << "]";
}
}
else if(type == bias_enum::alibi)
{
os << "alibi";
if(rank_info != 0)
{
os << "[" << rank_info << "]";
}
}
}
static bias_info decode(std::string str)
{
bias_info info{bias_enum::no_bias, 0};
if(str == "0" || str == "n")
{
info.type = bias_enum::no_bias;
}
else if(str.compare(0, 1, "1") == 0 || str.compare(0, 1, "e") == 0 ||
str.compare(0, 11, "elementwise") == 0)
{
info.type = bias_enum::elementwise_bias;
auto found_0 = str.find(':');
if(found_0 != std::string::npos)
{
std::string e = str.substr(found_0 + 1);
info.rank_info = atoi(e.c_str());
}
}
else if(str.compare(0, 1, "2") == 0 || str.compare(0, 1, "a") == 0 ||
str.compare(0, 5, "alibi") == 0)
{
info.type = bias_enum::alibi;
auto found_0 = str.find(':');
if(found_0 != std::string::npos)
{
std::string e = str.substr(found_0 + 1);
info.rank_info = atoi(e.c_str());
}
}
return info;
}
friend std::ostream& operator<<(std::ostream& os, const bias_info& bi)
{
bi.serialize(os);
return os;
}
};

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@ -1,457 +0,0 @@
// 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/host/kernel_launch.hpp>
#include <ck_tile/ops/fmha.hpp>
#include <ck_tile/ops/epilogue.hpp>
#include <mask.hpp>
#include <bias.hpp>
#include <launch_kernel_pt.hpp>
#include <type_traits>
#include <utility>
#include <variant>
struct FmhaBwdFp16
{
};
struct FmhaBwdBf16
{
};
template <typename DataType>
struct FmhaBwdTypeConfig;
template <>
struct FmhaBwdTypeConfig<FmhaBwdFp16>
{
using QDataType = ck_tile::half_t;
using KDataType = ck_tile::half_t;
using VDataType = ck_tile::half_t;
using GemmDataType = ck_tile::half_t;
using BiasDataType = ck_tile::half_t;
using LSEDataType = float;
using AccDataType = float; // data type for gemm accumulation
using DDataType = float;
using RandValOutputDataType = uint8_t;
using ODataType = ck_tile::half_t;
using OGradDataType = ck_tile::half_t;
using QGradDataType = ck_tile::half_t;
using KGradDataType = ck_tile::half_t;
using VGradDataType = ck_tile::half_t;
using BiasGradDataType = ck_tile::half_t;
};
template <>
struct FmhaBwdTypeConfig<FmhaBwdBf16>
{
using QDataType = ck_tile::bf16_t;
using KDataType = ck_tile::bf16_t;
using VDataType = ck_tile::bf16_t;
using GemmDataType = ck_tile::bf16_t;
using BiasDataType = ck_tile::bf16_t;
using LSEDataType = float;
using AccDataType = float; // data type for gemm accumulation
using DDataType = float;
using RandValOutputDataType = uint8_t;
using ODataType = ck_tile::bf16_t;
using OGradDataType = ck_tile::bf16_t;
using QGradDataType = ck_tile::bf16_t;
using KGradDataType = ck_tile::bf16_t;
using VGradDataType = ck_tile::bf16_t;
using BiasGradDataType = ck_tile::bf16_t;
};
struct FmhaMasks
{
using NoMask = ck_tile::GenericAttentionMask<false>;
using GenericMask = ck_tile::GenericAttentionMask<true, true>;
using CausalMask = ck_tile::GenericAttentionMask<true, false>;
};
// runtime args, some will passed to karg, some will used to compute grids/blocks
struct fmha_bwd_args
{
const void* q_ptr;
const void* k_ptr;
const void* v_ptr;
const void* bias_ptr; // bias or alibi_slope pointer
const void* o_ptr;
const void* lse_ptr;
const void* do_ptr;
void* d_ptr;
void* rand_val_ptr;
void* dq_ptr;
void* dk_ptr;
void* dv_ptr;
void* dbias_ptr;
void* dq_acc_ptr;
const void* seqstart_q_ptr;
const void* seqstart_k_ptr;
const void* seqlen_k_ptr;
ck_tile::index_t seqlen_q;
ck_tile::index_t seqlen_k;
ck_tile::index_t batch;
ck_tile::index_t max_seqlen_q;
ck_tile::index_t max_seqlen_k;
ck_tile::index_t hdim_q;
ck_tile::index_t hdim_v;
ck_tile::index_t nhead_q;
ck_tile::index_t nhead_k;
float scale;
ck_tile::index_t stride_q;
ck_tile::index_t stride_k;
ck_tile::index_t stride_v;
ck_tile::index_t stride_bias; // if alibi, b*h need set this to h, 1*h need set this to 0
ck_tile::index_t stride_o;
ck_tile::index_t stride_randval;
ck_tile::index_t stride_do;
ck_tile::index_t stride_dq_acc;
ck_tile::index_t stride_dq;
ck_tile::index_t stride_dk;
ck_tile::index_t stride_dv;
ck_tile::index_t stride_dbias;
ck_tile::index_t nhead_stride_q;
ck_tile::index_t nhead_stride_k;
ck_tile::index_t nhead_stride_v;
ck_tile::index_t nhead_stride_bias;
ck_tile::index_t nhead_stride_o;
ck_tile::index_t nhead_stride_randval;
ck_tile::index_t nhead_stride_do;
ck_tile::index_t nhead_stride_lsed;
ck_tile::index_t nhead_stride_dq_acc;
ck_tile::index_t nhead_stride_dq;
ck_tile::index_t nhead_stride_dk;
ck_tile::index_t nhead_stride_dv;
ck_tile::index_t nhead_stride_dbias;
ck_tile::index_t batch_stride_q;
ck_tile::index_t batch_stride_k;
ck_tile::index_t batch_stride_v;
ck_tile::index_t batch_stride_bias;
ck_tile::index_t batch_stride_o;
ck_tile::index_t batch_stride_randval;
ck_tile::index_t batch_stride_do;
ck_tile::index_t batch_stride_lsed;
ck_tile::index_t batch_stride_dq_acc;
ck_tile::index_t batch_stride_dq;
ck_tile::index_t batch_stride_dk;
ck_tile::index_t batch_stride_dv;
ck_tile::index_t batch_stride_dbias;
ck_tile::index_t split_stride_dq_acc;
ck_tile::index_t window_size_left;
ck_tile::index_t window_size_right;
ck_tile::index_t mask_type;
float p_drop;
float p_undrop;
std::variant<std::pair<uint64_t, uint64_t>, std::pair<const void*, const void*>>
drop_seed_offset;
};
template <typename FmhaBwdDQDKDVKernel>
auto fmha_bwd_dq_dk_dv_create_kargs_and_grids(fmha_bwd_args args)
{
assert(args.nhead_q % args.nhead_k == 0);
auto kargs = [&] {
// create group mode kernel arguments
if constexpr(FmhaBwdDQDKDVKernel::kIsGroupMode)
{
return FmhaBwdDQDKDVKernel::MakeKargsImpl(args.q_ptr,
args.k_ptr,
args.v_ptr,
args.bias_ptr,
args.lse_ptr,
args.do_ptr,
args.d_ptr,
args.rand_val_ptr,
args.dk_ptr,
args.dv_ptr,
args.dbias_ptr,
args.dq_acc_ptr,
args.seqstart_q_ptr,
args.seqstart_k_ptr,
args.seqlen_k_ptr,
args.hdim_q,
args.hdim_v,
args.nhead_q,
args.nhead_q / args.nhead_k,
args.scale,
args.stride_q,
args.stride_k,
args.stride_v,
args.stride_bias,
args.stride_randval,
args.stride_do,
args.stride_dq_acc,
args.stride_dk,
args.stride_dv,
args.stride_dbias,
args.nhead_stride_q,
args.nhead_stride_k,
args.nhead_stride_v,
args.nhead_stride_bias,
args.nhead_stride_randval,
args.nhead_stride_do,
args.nhead_stride_lsed,
args.nhead_stride_dq_acc,
args.nhead_stride_dk,
args.nhead_stride_dv,
args.nhead_stride_dbias,
args.split_stride_dq_acc,
args.window_size_left,
args.window_size_right,
args.mask_type,
args.p_drop,
args.drop_seed_offset);
}
else
{ // create batch mode kernel arguments
return FmhaBwdDQDKDVKernel::MakeKargsImpl(args.q_ptr,
args.k_ptr,
args.v_ptr,
args.bias_ptr,
args.lse_ptr,
args.do_ptr,
args.d_ptr,
args.rand_val_ptr,
args.dk_ptr,
args.dv_ptr,
args.dbias_ptr,
args.dq_acc_ptr,
args.seqlen_q,
args.seqlen_k,
args.hdim_q,
args.hdim_v,
args.nhead_q,
args.nhead_q / args.nhead_k,
args.scale,
args.stride_q,
args.stride_k,
args.stride_v,
args.stride_bias,
args.stride_randval,
args.stride_do,
args.stride_dq_acc,
args.stride_dk,
args.stride_dv,
args.stride_dbias,
args.nhead_stride_q,
args.nhead_stride_k,
args.nhead_stride_v,
args.nhead_stride_bias,
args.nhead_stride_randval,
args.nhead_stride_do,
args.nhead_stride_lsed,
args.nhead_stride_dq_acc,
args.nhead_stride_dk,
args.nhead_stride_dv,
args.nhead_stride_dbias,
args.batch_stride_q,
args.batch_stride_k,
args.batch_stride_v,
args.batch_stride_bias,
args.batch_stride_randval,
args.batch_stride_do,
args.batch_stride_lsed,
args.batch_stride_dq_acc,
args.batch_stride_dk,
args.batch_stride_dv,
args.batch_stride_dbias,
args.split_stride_dq_acc,
args.window_size_left,
args.window_size_right,
args.mask_type,
args.p_drop,
args.drop_seed_offset);
}
}();
dim3 grids = FmhaBwdDQDKDVKernel::GridSize(args.batch, args.nhead_q, args.max_seqlen_k);
return ck_tile::make_tuple(kargs, grids);
}
template <typename FmhaBwdOGradDotOKernel>
auto fmha_bwd_dot_do_o_create_kargs_and_grids(fmha_bwd_args args)
{
auto kargs = [&] {
// create group mode kernel arguments
if constexpr(FmhaBwdOGradDotOKernel::kIsGroupMode)
{
return FmhaBwdOGradDotOKernel::MakeKargs(args.o_ptr,
args.do_ptr,
args.d_ptr,
args.p_undrop,
args.seqstart_q_ptr,
args.hdim_v,
args.stride_do,
args.stride_o,
args.nhead_stride_do,
args.nhead_stride_o,
args.nhead_stride_lsed);
}
else
{ // create batch mode kernel arguments
return FmhaBwdOGradDotOKernel::MakeKargs(args.o_ptr,
args.do_ptr,
args.d_ptr,
args.p_undrop,
args.seqlen_q,
args.hdim_v,
args.stride_do,
args.stride_o,
args.nhead_stride_do,
args.nhead_stride_o,
args.nhead_stride_lsed,
args.batch_stride_do,
args.batch_stride_o,
args.batch_stride_lsed);
}
}();
dim3 grids = FmhaBwdOGradDotOKernel::GridSize(args.batch, args.nhead_q, args.max_seqlen_q);
return ck_tile::make_tuple(kargs, grids);
}
template <typename FmhaBwdConvertQGradKernel>
auto fmha_bwd_convert_dq_create_kargs_and_grids(fmha_bwd_args args)
{
auto kargs = [&] {
// create group mode kernel arguments
if constexpr(FmhaBwdConvertQGradKernel::kIsGroupMode)
{
return FmhaBwdConvertQGradKernel::MakeKargs(args.dq_acc_ptr,
args.dq_ptr,
args.seqstart_q_ptr,
args.seqstart_k_ptr,
args.hdim_q,
args.stride_dq,
args.stride_dq_acc,
args.nhead_stride_dq,
args.nhead_stride_dq_acc,
args.split_stride_dq_acc);
}
else
{ // create batch mode kernel arguments
return FmhaBwdConvertQGradKernel::MakeKargs(args.dq_acc_ptr,
args.dq_ptr,
args.seqlen_q,
args.seqlen_k,
args.hdim_q,
args.stride_dq,
args.stride_dq_acc,
args.nhead_stride_dq,
args.nhead_stride_dq_acc,
args.batch_stride_dq,
args.batch_stride_dq_acc,
args.split_stride_dq_acc);
}
}();
dim3 grids = FmhaBwdConvertQGradKernel::GridSize(args.batch, args.nhead_q, args.max_seqlen_q);
return ck_tile::make_tuple(kargs, grids);
}
// this is used to pattern-match internl kernel implementation, not to instantiate kernel
template <ck_tile::index_t HDim_,
typename DataType_,
bool kIsGroupMode_,
ck_tile::BlockFmhaBwdPipelineEnum FmhaBwdPipelineEnum_,
typename FmhaMask_,
typename FmhaDropout_,
ck_tile::BlockAttentionBiasEnum BiasEnum_,
bool kHasBiasGrad_,
bool kPadS_,
bool kPadSK_,
bool kPadD_,
bool kPadDv_,
bool kIsDeterministic_>
struct fmha_bwd_dq_dk_dv_traits_
{
static constexpr ck_tile::index_t HDim = HDim_;
using DataType = ck_tile::remove_cvref_t<DataType_>;
static constexpr bool kIsGroupMode = kIsGroupMode_;
static constexpr auto FmhaBwdPipelineEnum = FmhaBwdPipelineEnum_;
using FmhaMask = ck_tile::remove_cvref_t<FmhaMask_>;
using FmhaDropout = ck_tile::remove_cvref_t<FmhaDropout_>;
static constexpr auto BiasEnum = BiasEnum_;
static constexpr bool kHasBiasGrad = kHasBiasGrad_;
static constexpr bool kPadS = kPadS_;
static constexpr bool kPadSK = kPadSK_;
static constexpr bool kPadD = kPadD_;
static constexpr bool kPadDv = kPadDv_;
static constexpr bool kIsDeterministic = kIsDeterministic_;
};
template <typename Traits_>
float fmha_bwd_dq_dk_dv_(const ck_tile::stream_config&, fmha_bwd_args);
template <typename Traits_>
void fmha_bwd_dq_dk_dv_oneshot_(const ck_tile::stream_config&, fmha_bwd_args);
template <typename Traits_>
std::string fmha_bwd_dq_dk_dv_get_name_();
template <ck_tile::index_t HDim_, typename DataType_, bool kIsGroupMode_, bool kPadS_, bool kPadDv_>
struct fmha_bwd_dot_do_o_traits_
{
static constexpr ck_tile::index_t HDim = HDim_;
using DataType = ck_tile::remove_cvref_t<DataType_>;
static constexpr bool kIsGroupMode = kIsGroupMode_;
static constexpr bool kPadS = kPadS_;
static constexpr bool kPadDv = kPadDv_;
};
template <typename Traits_>
float fmha_bwd_dot_do_o_(const ck_tile::stream_config&, fmha_bwd_args);
template <typename Traits_>
void fmha_bwd_dot_do_o_oneshot_(const ck_tile::stream_config&, fmha_bwd_args);
template <typename Traits_>
std::string fmha_bwd_dot_do_o_get_name_();
template <ck_tile::index_t HDim_,
typename DataType_,
bool kIsGroupMode_,
bool kPadS_,
bool kPadD_,
bool kIsDeterministic_>
struct fmha_bwd_convert_dq_traits_
{
static constexpr ck_tile::index_t HDim = HDim_;
using DataType = ck_tile::remove_cvref_t<DataType_>;
static constexpr bool kIsGroupMode = kIsGroupMode_;
static constexpr bool kPadS = kPadS_;
static constexpr bool kPadD = kPadD_;
static constexpr bool kIsDeterministic = kIsDeterministic_;
};
template <typename Traits_>
float fmha_bwd_convert_dq_(const ck_tile::stream_config&, fmha_bwd_args);
template <typename Traits_>
void fmha_bwd_convert_dq_oneshot_(const ck_tile::stream_config&, fmha_bwd_args);
template <typename Traits_>
std::string fmha_bwd_convert_dq_get_name_();
// This is the public API, will be generated by script
struct fmha_bwd_traits
{
int hdim_q;
int hdim_v;
std::string data_type;
bool is_group_mode;
mask_enum mask_type;
bias_enum bias_type; // 0:no bias, 1:elementwise bias, 2:alibi. sync with BlockAttentionBiasEnum
bool has_dbias;
bool has_dropout;
bool is_store_randval;
bool is_deterministic;
// TODO: padding check is inside this api
};
template <int Version = 2>
float fmha_bwd(fmha_bwd_traits, fmha_bwd_args, const ck_tile::stream_config&);

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@ -1,824 +0,0 @@
// 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/host/kernel_launch.hpp>
#include <ck_tile/ops/epilogue.hpp>
#include <ck_tile/ops/fmha.hpp>
#include <bias.hpp>
#include <mask.hpp>
#include <rotary.hpp>
#include <launch_kernel_pt.hpp>
#include <type_traits>
#include <utility>
#include <variant>
struct FmhaFwdFp16
{
};
struct FmhaFwdBf16
{
};
struct FmhaFwdFp8
{
};
struct FmhaFwdBf8
{
};
struct FmhaFwdFp8Fp16
{
};
struct FmhaFwdFp8Bf16
{
};
template <typename DataType>
struct FmhaFwdTypeConfig;
template <>
struct FmhaFwdTypeConfig<FmhaFwdFp16>
{
using QDataType = ck_tile::half_t;
using KDataType = ck_tile::half_t;
using VDataType = ck_tile::half_t;
using BiasDataType = ck_tile::half_t;
using RandValOutputDataType = uint8_t;
using LSEDataType = float; // data type for lse(logsumexp L_j = max_j + log(l_j))
using SaccDataType = float; // data type for first gemm accumulation
using SMPLComputeDataType = float; // data type for reduction, softmax
using PDataType = ck_tile::half_t; // data type for A matrix of second gemm
using OaccDataType = float; // data type for second gemm accumulation
using ODataType = ck_tile::half_t;
};
template <>
struct FmhaFwdTypeConfig<FmhaFwdBf16>
{
using QDataType = ck_tile::bf16_t;
using KDataType = ck_tile::bf16_t;
using VDataType = ck_tile::bf16_t;
using BiasDataType = ck_tile::bf16_t;
using RandValOutputDataType = uint8_t;
using LSEDataType = float; // data type for lse(logsumexp L_j = max_j + log(l_j))
using SaccDataType = float; // data type for first gemm accumulation
using SMPLComputeDataType = float; // data type for reduction, softmax
using PDataType = ck_tile::bf16_t; // data type for A matrix of second gemm
using OaccDataType = float; // data type for second gemm accumulation
using ODataType = ck_tile::bf16_t;
};
template <>
struct FmhaFwdTypeConfig<FmhaFwdFp8>
{
using QDataType = ck_tile::fp8_t;
using KDataType = ck_tile::fp8_t;
using VDataType = ck_tile::fp8_t;
using BiasDataType = float;
using RandValOutputDataType = uint8_t;
using LSEDataType = float; // data type for lse(logsumexp L_j = max_j + log(l_j))
using SaccDataType = float; // data type for first gemm accumulation
using SMPLComputeDataType = float; // data type for reduction, softmax
using PDataType = ck_tile::fp8_t; // data type for A matrix of second gemm
using OaccDataType = float; // data type for second gemm accumulation
using ODataType = ck_tile::fp8_t;
};
template <>
struct FmhaFwdTypeConfig<FmhaFwdBf8>
{
using QDataType = ck_tile::bf8_t;
using KDataType = ck_tile::bf8_t;
using VDataType = ck_tile::bf8_t;
using BiasDataType = ck_tile::bf8_t;
using RandValOutputDataType = uint8_t;
using LSEDataType = float; // data type for lse(logsumexp L_j = max_j + log(l_j))
using SaccDataType = float; // data type for first gemm accumulation
using SMPLComputeDataType = float; // data type for reduction, softmax
using PDataType = ck_tile::bf8_t; // data type for A matrix of second gemm
using OaccDataType = float; // data type for second gemm accumulation
using ODataType = ck_tile::bf8_t;
};
struct FmhaMasks
{
using NoMask = ck_tile::GenericAttentionMask<false>;
using GenericMask = ck_tile::GenericAttentionMask<true, true>;
using CausalMask = ck_tile::GenericAttentionMask<true, false>;
};
// runtime args, some will passed to karg, some will used to compute grids/blocks
struct fmha_fwd_args
{
const void* q_ptr;
const void* k_ptr;
const void* v_ptr;
const void* bias_ptr; // bias or alibi_slope pointer
void* rand_val_ptr;
void* lse_ptr;
void* o_ptr;
const void* seqstart_q_ptr;
const void* seqstart_k_ptr;
const void*
seqlen_k_ptr; // only used if both 'seqstart_q_ptr' & 'seqstart_k_ptr' are not nullptr
ck_tile::index_t seqlen_q;
ck_tile::index_t seqlen_k;
ck_tile::index_t batch;
ck_tile::index_t max_seqlen_q;
ck_tile::index_t hdim_q;
ck_tile::index_t hdim_v;
ck_tile::index_t nhead_q;
ck_tile::index_t nhead_k;
float scale_s;
float scale_p;
float scale_o;
ck_tile::index_t stride_q;
ck_tile::index_t stride_k;
ck_tile::index_t stride_v;
ck_tile::index_t stride_bias; // if alibi, b*h need set this to h, 1*h need set this to 0
ck_tile::index_t stride_randval;
ck_tile::index_t stride_o;
ck_tile::index_t nhead_stride_q;
ck_tile::index_t nhead_stride_k;
ck_tile::index_t nhead_stride_v;
ck_tile::index_t nhead_stride_bias;
ck_tile::index_t nhead_stride_randval;
ck_tile::index_t nhead_stride_lse;
ck_tile::index_t nhead_stride_o;
ck_tile::index_t batch_stride_q;
ck_tile::index_t batch_stride_k;
ck_tile::index_t batch_stride_v;
ck_tile::index_t batch_stride_bias;
ck_tile::index_t batch_stride_randval;
ck_tile::index_t batch_stride_lse;
ck_tile::index_t batch_stride_o;
ck_tile::index_t window_size_left;
ck_tile::index_t window_size_right;
ck_tile::index_t mask_type;
float p_drop;
bool s_randval;
std::variant<std::pair<uint64_t, uint64_t>, std::pair<const void*, const void*>>
drop_seed_offset;
};
struct fmha_fwd_splitkv_args
{
const void* q_ptr;
const void* k_ptr;
const void* v_ptr;
const void* bias_ptr; // bias or alibi_slope pointer
void* lse_acc_ptr;
void* o_acc_ptr;
void* lse_ptr;
void* o_ptr;
void* block_table_ptr;
ck_tile::index_t batch_stride_block_table; // only used if 'block_table_ptr' is not nullptr
ck_tile::index_t page_block_size; // only used if 'block_table_ptr' is not nullptr
bool is_gappy; // differentiate seqstart_k_ptr usage. only used if 'block_table_ptr' is not
// nullptr.
const void* cache_batch_idx;
// the real seqlen_q & seqlen_k are decided by following:
// batch mode: seqlen_q = kargs.seqlen_q
// seqlen_k = kargs.seqlen_k
// group mode: seqlen_q = kargs.seqstart_q_ptr[b + 1] - kargs.seqstart_q_ptr[b]
// seqlen_k = kargs.seqstart_k_ptr[b + 1] - kargs.seqstart_k_ptr[b]
// or kargs.seqlen_k_ptr[b]
//
// batch mode (kvcache):
// seqlen_q = kargs.seqlen_q
// seqlen_k = kargs.seqlen_k_ptr[b]
// group mode (kvcache):
// seqlen_q = kargs.seqstart_q_ptr[b + 1] - kargs.seqstart_q_ptr[b]
//
// when is_gappy=true:
// seqlen_k = kargs.seqlen_k_ptr[b]
// seqstart_k_ptr[b] now store local offset of each batch
//
// when is_gappy=false:
// seqlen_k = kargs.seqstart_k_ptr[b + 1] - kargs.seqstart_k_ptr[b]
// or kargs.seqlen_k_ptr[b]
const void* seqstart_q_ptr;
const void* seqstart_k_ptr;
const void* seqlen_k_ptr;
ck_tile::index_t seqlen_q;
ck_tile::index_t seqlen_k;
ck_tile::index_t batch;
ck_tile::index_t max_seqlen_q;
ck_tile::index_t hdim_q;
ck_tile::index_t hdim_v;
ck_tile::index_t nhead_q;
ck_tile::index_t nhead_k;
ck_tile::index_t num_splits;
float scale_s;
float scale_p;
float scale_o;
ck_tile::index_t stride_q;
ck_tile::index_t stride_k;
ck_tile::index_t stride_v;
ck_tile::index_t stride_bias; // if alibi, b*h need set this to h, 1*h need set this to 0
ck_tile::index_t stride_o_acc;
ck_tile::index_t stride_o;
ck_tile::index_t nhead_stride_q;
ck_tile::index_t nhead_stride_k;
ck_tile::index_t nhead_stride_v;
ck_tile::index_t nhead_stride_bias;
ck_tile::index_t nhead_stride_lse;
ck_tile::index_t nhead_stride_lse_acc;
ck_tile::index_t nhead_stride_o_acc;
ck_tile::index_t nhead_stride_o;
ck_tile::index_t batch_stride_q;
ck_tile::index_t batch_stride_k;
ck_tile::index_t batch_stride_v;
ck_tile::index_t batch_stride_bias;
ck_tile::index_t batch_stride_lse;
ck_tile::index_t batch_stride_lse_acc;
ck_tile::index_t batch_stride_o_acc;
ck_tile::index_t batch_stride_o;
ck_tile::index_t split_stride_lse_acc;
ck_tile::index_t split_stride_o_acc;
ck_tile::index_t window_size_left;
ck_tile::index_t window_size_right;
ck_tile::index_t mask_type;
};
struct fmha_fwd_appendkv_args
{
void* q_ptr;
void* k_ptr;
const void* knew_ptr;
void* v_ptr;
const void* vnew_ptr;
const void* seqlen_k_ptr;
ck_tile::index_t seqlen_q;
ck_tile::index_t seqlen_knew;
ck_tile::index_t batch;
ck_tile::index_t hdim_q;
ck_tile::index_t hdim_v;
ck_tile::index_t nhead_q;
ck_tile::index_t nhead_k;
const void* rotary_cos_ptr; // only used if 'rotary_dim' > 0
const void* rotary_sin_ptr; // only used if 'rotary_dim' > 0
ck_tile::index_t rotary_dim;
bool has_mask;
void* block_table_ptr;
ck_tile::index_t batch_stride_block_table; // only used if 'block_table_ptr' is not nullptr
ck_tile::index_t page_block_size; // only used if 'block_table_ptr' is not nullptr
const void* cache_batch_idx; // only used if block_table_ptr is nullptr -> batch mode (kvcache)
ck_tile::index_t stride_q;
ck_tile::index_t stride_k;
ck_tile::index_t stride_knew;
ck_tile::index_t stride_v;
ck_tile::index_t stride_vnew;
ck_tile::index_t nhead_stride_q;
ck_tile::index_t nhead_stride_k;
ck_tile::index_t nhead_stride_knew;
ck_tile::index_t nhead_stride_v;
ck_tile::index_t nhead_stride_vnew;
ck_tile::index_t batch_stride_q;
ck_tile::index_t batch_stride_k;
ck_tile::index_t batch_stride_knew;
ck_tile::index_t batch_stride_v;
ck_tile::index_t batch_stride_vnew;
};
template <typename FmhaKernel>
auto fmha_fwd_create_kargs_and_grids(fmha_fwd_args args)
{
assert(args.nhead_q % args.nhead_k == 0);
auto kargs = [&] {
// create group mode kernel arguments
if constexpr(FmhaKernel::kIsGroupMode)
{
return FmhaKernel::MakeKargsImpl(args.q_ptr,
args.k_ptr,
args.v_ptr,
args.bias_ptr,
args.rand_val_ptr,
args.lse_ptr,
args.o_ptr,
args.seqstart_q_ptr,
args.seqstart_k_ptr,
args.seqlen_k_ptr,
args.hdim_q,
args.hdim_v,
args.nhead_q,
args.nhead_q / args.nhead_k,
args.scale_s,
args.scale_p,
args.scale_o,
args.stride_q,
args.stride_k,
args.stride_v,
args.stride_bias,
args.stride_randval,
args.stride_o,
args.nhead_stride_q,
args.nhead_stride_k,
args.nhead_stride_v,
args.nhead_stride_bias,
args.nhead_stride_randval,
args.nhead_stride_lse,
args.nhead_stride_o,
args.window_size_left,
args.window_size_right,
args.mask_type,
args.p_drop,
args.s_randval,
args.drop_seed_offset);
}
else
{ // create batch mode kernel arguments
return FmhaKernel::MakeKargsImpl(args.q_ptr,
args.k_ptr,
args.v_ptr,
args.bias_ptr,
args.rand_val_ptr,
args.lse_ptr,
args.o_ptr,
args.seqlen_q,
args.seqlen_k,
args.hdim_q,
args.hdim_v,
args.nhead_q,
args.nhead_q / args.nhead_k,
args.scale_s,
args.scale_p,
args.scale_o,
args.stride_q,
args.stride_k,
args.stride_v,
args.stride_bias,
args.stride_randval,
args.stride_o,
args.nhead_stride_q,
args.nhead_stride_k,
args.nhead_stride_v,
args.nhead_stride_bias,
args.nhead_stride_randval,
args.nhead_stride_lse,
args.nhead_stride_o,
args.batch_stride_q,
args.batch_stride_k,
args.batch_stride_v,
args.batch_stride_bias,
args.batch_stride_randval,
args.batch_stride_lse,
args.batch_stride_o,
args.window_size_left,
args.window_size_right,
args.mask_type,
args.p_drop,
args.s_randval,
args.drop_seed_offset);
}
}();
if constexpr(FmhaKernel::kIsGroupMode)
{
dim3 grids = FmhaKernel::GridSize(
args.batch, args.nhead_q, args.max_seqlen_q, args.hdim_v, args.seqlen_k_ptr != nullptr);
return ck_tile::make_tuple(kargs, grids);
}
else
{
dim3 grids =
FmhaKernel::GridSize(args.batch, args.nhead_q, args.max_seqlen_q, args.hdim_v, false);
return ck_tile::make_tuple(kargs, grids);
}
}
template <typename Kernel>
auto fmha_fwd_splitkv_create_kargs_and_grids(fmha_fwd_splitkv_args args)
{
assert(args.nhead_q % args.nhead_k == 0);
auto kargs = [&] {
// create group mode kernel arguments
if constexpr(Kernel::kIsGroupMode)
{
return Kernel::MakeKargs(args.q_ptr,
args.k_ptr,
args.v_ptr,
args.bias_ptr,
args.lse_acc_ptr,
args.o_acc_ptr,
args.batch,
args.seqstart_q_ptr,
args.seqstart_k_ptr,
args.seqlen_k_ptr,
args.hdim_q,
args.hdim_v,
args.nhead_q,
args.nhead_q / args.nhead_k,
args.num_splits,
args.block_table_ptr,
args.batch_stride_block_table,
args.page_block_size,
args.is_gappy,
args.scale_s,
args.scale_p,
args.stride_q,
args.stride_k,
args.stride_v,
args.stride_bias,
args.stride_o_acc,
args.nhead_stride_q,
args.nhead_stride_k,
args.nhead_stride_v,
args.nhead_stride_bias,
args.nhead_stride_lse_acc,
args.nhead_stride_o_acc,
args.batch_stride_k, // only used for paged-kvcache
args.batch_stride_v, // only used for paged-kvcache
args.split_stride_lse_acc,
args.split_stride_o_acc,
args.window_size_left,
args.window_size_right,
args.mask_type);
}
else
{ // create batch mode kernel arguments
return Kernel::MakeKargs(args.q_ptr,
args.k_ptr,
args.v_ptr,
args.bias_ptr,
args.lse_acc_ptr,
args.o_acc_ptr,
args.batch,
args.seqlen_q,
args.seqlen_k,
args.seqlen_k_ptr,
args.hdim_q,
args.hdim_v,
args.nhead_q,
args.nhead_q / args.nhead_k,
args.num_splits,
args.block_table_ptr,
args.batch_stride_block_table,
args.page_block_size,
args.cache_batch_idx,
args.scale_s,
args.scale_p,
args.stride_q,
args.stride_k,
args.stride_v,
args.stride_bias,
args.stride_o_acc,
args.nhead_stride_q,
args.nhead_stride_k,
args.nhead_stride_v,
args.nhead_stride_bias,
args.nhead_stride_lse_acc,
args.nhead_stride_o_acc,
args.batch_stride_q,
args.batch_stride_k,
args.batch_stride_v,
args.batch_stride_bias,
args.batch_stride_lse_acc,
args.batch_stride_o_acc,
args.split_stride_lse_acc,
args.split_stride_o_acc,
args.window_size_left,
args.window_size_right,
args.mask_type);
}
}();
dim3 grids = Kernel::GridSize(
args.batch, args.nhead_q, args.nhead_k, args.max_seqlen_q, args.hdim_v, args.num_splits);
return ck_tile::make_tuple(kargs, grids);
}
template <typename Kernel>
auto fmha_fwd_splitkv_combine_create_kargs_and_grids(fmha_fwd_splitkv_args args)
{
assert(args.nhead_q % args.nhead_k == 0);
auto kargs = [&] {
// create group mode kernel argumentszs
if constexpr(Kernel::kIsGroupMode)
{
return Kernel::MakeKargs(args.lse_acc_ptr,
args.o_acc_ptr,
args.lse_ptr,
args.o_ptr,
args.batch,
args.seqstart_q_ptr,
args.hdim_v,
args.num_splits,
args.scale_o,
args.stride_o_acc,
args.stride_o,
args.nhead_stride_lse_acc,
args.nhead_stride_o_acc,
args.nhead_stride_lse,
args.nhead_stride_o,
args.split_stride_lse_acc,
args.split_stride_o_acc);
}
else
{ // create batch mode kernel arguments
return Kernel::MakeKargs(args.lse_acc_ptr,
args.o_acc_ptr,
args.lse_ptr,
args.o_ptr,
args.batch,
args.seqlen_q,
args.hdim_v,
args.num_splits,
args.scale_o,
args.stride_o_acc,
args.stride_o,
args.nhead_stride_lse_acc,
args.nhead_stride_o_acc,
args.nhead_stride_lse,
args.nhead_stride_o,
args.batch_stride_lse_acc,
args.batch_stride_o_acc,
args.batch_stride_lse,
args.batch_stride_o,
args.split_stride_lse_acc,
args.split_stride_o_acc);
}
}();
dim3 grids = Kernel::GridSize(args.batch, args.nhead_q, args.max_seqlen_q, args.hdim_v);
return ck_tile::make_tuple(kargs, grids);
}
template <typename Kernel>
auto fmha_fwd_appendkv_create_kargs_and_grids(fmha_fwd_appendkv_args args)
{
assert(args.nhead_q % args.nhead_k == 0);
auto kargs = Kernel::MakeKargs(args.q_ptr,
args.k_ptr,
args.knew_ptr,
args.v_ptr,
args.vnew_ptr,
args.seqlen_q,
args.seqlen_k_ptr,
args.seqlen_knew,
args.hdim_q,
args.hdim_v,
args.nhead_q,
args.nhead_q / args.nhead_k,
args.rotary_cos_ptr,
args.rotary_sin_ptr,
args.rotary_dim,
args.has_mask,
args.block_table_ptr,
args.batch_stride_block_table,
args.page_block_size,
args.cache_batch_idx,
args.stride_q,
args.stride_k,
args.stride_knew,
args.stride_v,
args.stride_vnew,
args.nhead_stride_q,
args.nhead_stride_k,
args.nhead_stride_knew,
args.nhead_stride_v,
args.nhead_stride_vnew,
args.batch_stride_q,
args.batch_stride_k,
args.batch_stride_knew,
args.batch_stride_v,
args.batch_stride_vnew);
dim3 grids = Kernel::GridSize(args.batch, args.nhead_q, args.seqlen_q, args.seqlen_knew);
return ck_tile::make_tuple(kargs, grids);
}
// this is used to pattern-match internl kernel implementation, not to instantiate kernel
template <ck_tile::index_t HDim_,
typename DataType_,
bool kIsGroupMode_,
ck_tile::index_t kM0_,
ck_tile::index_t kN0_,
ck_tile::index_t kK0_,
ck_tile::index_t kN1_,
ck_tile::index_t kK1_,
ck_tile::index_t kK0BlockLength_,
bool kIsVLayoutRowMajor_,
ck_tile::BlockFmhaPipelineEnum FmhaPipelineEnum_,
typename FmhaMask_,
ck_tile::BlockAttentionBiasEnum BiasEnum_,
bool kStoreLse_,
bool kHasDropout_,
bool kDoFp8StaticQuant_,
bool kPadS_,
bool kPadSK_,
bool kPadD_,
bool kPadDv_>
struct fmha_fwd_traits_
{
static constexpr ck_tile::index_t HDim = HDim_;
using DataType = ck_tile::remove_cvref_t<DataType_>;
static constexpr bool kIsGroupMode = kIsGroupMode_;
static constexpr ck_tile::index_t kM0 = kM0_;
static constexpr ck_tile::index_t kN0 = kN0_;
static constexpr ck_tile::index_t kK0 = kK0_;
static constexpr ck_tile::index_t kN1 = kN1_;
static constexpr ck_tile::index_t kK1 = kK1_;
static constexpr ck_tile::index_t kK0BlockLength = kK0BlockLength_;
static constexpr bool kIsVLayoutRowMajor = kIsVLayoutRowMajor_;
static constexpr auto FmhaPipelineEnum = FmhaPipelineEnum_;
using FmhaMask = ck_tile::remove_cvref_t<FmhaMask_>;
static constexpr auto BiasEnum = BiasEnum_;
static constexpr bool kStoreLse = kStoreLse_;
static constexpr bool kHasDropout = kHasDropout_;
static constexpr bool kDoFp8StaticQuant = kDoFp8StaticQuant_;
static constexpr bool kPadS = kPadS_;
static constexpr bool kPadSK = kPadSK_;
static constexpr bool kPadD = kPadD_;
static constexpr bool kPadDv = kPadDv_;
};
template <typename Traits_>
float fmha_fwd_(const ck_tile::stream_config&, fmha_fwd_args);
template <ck_tile::index_t HDim_,
typename DataType_,
bool kIsGroupMode_,
ck_tile::index_t kM0_,
ck_tile::index_t kN0_,
ck_tile::index_t kK0_,
ck_tile::index_t kN1_,
ck_tile::index_t kK1_,
ck_tile::index_t kK0BlockLength_,
bool kIsVLayoutRowMajor_,
ck_tile::BlockFmhaPipelineEnum FmhaPipelineEnum_,
typename FmhaMask_,
ck_tile::BlockAttentionBiasEnum BiasEnum_,
bool kStoreLse_,
bool kDoFp8StaticQuant_,
bool kIsPagedKV_,
bool kPadS_,
bool kPadSK_,
bool kPadD_,
bool kPadDv_>
struct fmha_fwd_splitkv_traits_
{
static constexpr ck_tile::index_t HDim = HDim_;
using DataType = ck_tile::remove_cvref_t<DataType_>;
static constexpr bool kIsGroupMode = kIsGroupMode_;
static constexpr ck_tile::index_t kM0 = kM0_;
static constexpr ck_tile::index_t kN0 = kN0_;
static constexpr ck_tile::index_t kK0 = kK0_;
static constexpr ck_tile::index_t kN1 = kN1_;
static constexpr ck_tile::index_t kK1 = kK1_;
static constexpr ck_tile::index_t kK0BlockLength = kK0BlockLength_;
static constexpr bool kIsVLayoutRowMajor = kIsVLayoutRowMajor_;
static constexpr auto FmhaPipelineEnum = FmhaPipelineEnum_;
using FmhaMask = ck_tile::remove_cvref_t<FmhaMask_>;
static constexpr auto BiasEnum = BiasEnum_;
static constexpr bool kStoreLse = kStoreLse_;
static constexpr bool kDoFp8StaticQuant = kDoFp8StaticQuant_;
static constexpr bool kPadS = kPadS_;
static constexpr bool kPadSK = kPadSK_;
static constexpr bool kPadD = kPadD_;
static constexpr bool kPadDv = kPadDv_;
static constexpr bool kIsPagedKV = kIsPagedKV_;
};
template <typename Traits_>
void fmha_fwd_splitkv_oneshot_(const ck_tile::stream_config&, fmha_fwd_splitkv_args);
template <typename Traits_>
std::string fmha_fwd_splitkv_get_name_();
template <ck_tile::index_t HDim_,
typename DataType_,
bool kIsGroupMode_,
ck_tile::index_t kN1_,
bool kStoreLse_,
bool kDoFp8StaticQuant_,
bool kPadS_,
bool kPadDv_>
struct fmha_fwd_splitkv_combine_traits_
{
static constexpr ck_tile::index_t HDim = HDim_;
using DataType = ck_tile::remove_cvref_t<DataType_>;
static constexpr bool kIsGroupMode = kIsGroupMode_;
static constexpr ck_tile::index_t kN1 = kN1_;
static constexpr bool kStoreLse = kStoreLse_;
static constexpr bool kDoFp8StaticQuant = kDoFp8StaticQuant_;
static constexpr bool kPadS = kPadS_;
static constexpr bool kPadDv = kPadDv_;
};
template <typename Traits_>
void fmha_fwd_splitkv_combine_oneshot_(const ck_tile::stream_config&, fmha_fwd_splitkv_args);
template <typename Traits_>
std::string fmha_fwd_splitkv_combine_get_name_();
// this is used to pattern-match internl kernel implementation, not to instantiate kernel
template <ck_tile::index_t HDim_,
typename DataType_,
ck_tile::index_t kTileSizeS_,
ck_tile::index_t kTileSizeSk_,
ck_tile::index_t kTileSizeD_,
ck_tile::index_t kTileSizeDv_,
bool kIsVLayoutRowMajor_,
bool kPadS_,
bool kPadSk_,
bool kPadD_,
bool kPadDv_,
ck_tile::RotaryEmbeddingEnum RotaryEnum_,
bool kIsPagedKV_>
struct fmha_fwd_appendkv_traits_
{
static constexpr ck_tile::index_t HDim = HDim_;
using DataType = ck_tile::remove_cvref_t<DataType_>;
static constexpr ck_tile::index_t kTileSizeS = kTileSizeS_;
static constexpr ck_tile::index_t kTileSizeSk = kTileSizeSk_;
static constexpr ck_tile::index_t kTileSizeD = kTileSizeD_;
static constexpr ck_tile::index_t kTileSizeDv = kTileSizeDv_;
static constexpr bool kIsVLayoutRowMajor = kIsVLayoutRowMajor_;
static constexpr bool kPadS = kPadS_;
static constexpr bool kPadSk = kPadSk_;
static constexpr bool kPadD = kPadD_;
static constexpr bool kPadDv = kPadDv_;
static constexpr auto RotaryEnum = RotaryEnum_;
static constexpr bool kIsPagedKV = kIsPagedKV_;
};
template <typename Traits_>
float fmha_fwd_appendkv_(const ck_tile::stream_config&, fmha_fwd_appendkv_args);
// This is the public API, will be generated by script
struct fmha_fwd_traits
{
int hdim_q;
int hdim_v;
std::string data_type;
bool is_group_mode;
bool is_v_rowmajor;
mask_enum mask_type;
bias_enum bias_type; // 0:no bias, 1:elementwise bias, 2:alibi. sync with BlockAttentionBiasEnum
bool has_lse;
bool has_dropout;
bool do_fp8_static_quant;
// TODO: padding check is inside this api
};
float fmha_fwd(fmha_fwd_traits, fmha_fwd_args, const ck_tile::stream_config&);
struct fmha_fwd_splitkv_traits
{
int hdim_q;
int hdim_v;
std::string data_type;
bool is_group_mode;
bool is_v_rowmajor;
mask_enum mask_type;
bias_enum bias_type; // 0:no bias, 1:elementwise bias, 2:alibi. sync with BlockAttentionBiasEnum
bool has_lse;
bool do_fp8_static_quant;
// TODO: padding check is inside this api
};
float fmha_fwd_splitkv(fmha_fwd_splitkv_traits,
fmha_fwd_splitkv_args,
const ck_tile::stream_config&);
struct fmha_fwd_appendkv_traits
{
int hdim_q;
int hdim_v;
std::string data_type;
bool is_v_rowmajor;
rope_enum rope_type;
};
float fmha_fwd_appendkv(fmha_fwd_appendkv_traits,
fmha_fwd_appendkv_args,
const ck_tile::stream_config&);

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@ -1,157 +0,0 @@
// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
#pragma once
#include <ostream>
#include <string>
#include <ck_tile/core.hpp>
#include <ck_tile/ops/fmha.hpp>
// keep this in sync with ck_tile::GenericAttentionMaskEnum
enum class mask_enum
{
no_mask = 0,
mask_top_left,
mask_bottom_right,
window_generic,
};
struct mask_info
{
mask_enum type;
ck_tile::index_t y, x;
ck_tile::index_t left, right; // FA style SWA left/right
void serialize(std::ostream& os) const
{
if(type == mask_enum::no_mask)
os << "n";
else if(type == mask_enum::mask_top_left)
os << "t(" << left << ":" << right << ")";
else if(type == mask_enum::mask_bottom_right)
os << "b(" << left << ":" << right << ")";
else
{
os << "g(" << y << ":" << x << ")";
}
}
static mask_info decode(std::string str, ck_tile::index_t seqlen_q, ck_tile::index_t seqlen_k)
{
ck_tile::index_t x_total = seqlen_k;
ck_tile::index_t y_total = seqlen_q;
mask_info tmp;
auto found_0 = str.find(':');
if(found_0 != std::string::npos)
{
std::string t = str.substr(0, found_0);
std::string v = str.substr(found_0 + 1);
if(t == "xt" || t == "xb")
{
// xformer style sliding window attn from top-left
ck_tile::index_t window_size = atoi(v.c_str());
ck_tile::index_t left_size = -1;
ck_tile::index_t right_size = 0;
if(window_size > 0)
{
left_size = window_size / 2;
right_size = window_size - 1 - left_size;
}
auto r = ck_tile::make_generic_attention_mask_coordinates_from_lr_window(
left_size, right_size, y_total, x_total, t == "xt");
tmp.type = t == "xt" ? mask_enum::mask_top_left : mask_enum::mask_bottom_right;
tmp.y = r.at(ck_tile::number<0>{});
tmp.x = r.at(ck_tile::number<1>{});
tmp.left = left_size;
tmp.right = right_size;
}
else
{
auto found_1 = v.find(",");
if(found_1 == std::string::npos)
{
printf("not supported value %s, %s\n", v.c_str(), str.c_str());
assert(0);
}
tmp.type = mask_enum::window_generic;
ck_tile::index_t v0 = atoi(v.substr(0, found_1).c_str());
ck_tile::index_t v1 = atoi(v.substr(found_1 + 1).c_str());
// TODO: some validation
if(t == "t")
{
tmp.type = mask_enum::mask_top_left;
auto r = ck_tile::make_generic_attention_mask_coordinates_from_lr_window(
v0, v1, y_total, x_total, true);
tmp.y = r.at(ck_tile::number<0>{});
tmp.x = r.at(ck_tile::number<1>{});
tmp.left = v0;
tmp.right = v1;
}
else if(t == "b")
{
tmp.type = mask_enum::mask_bottom_right;
auto r = ck_tile::make_generic_attention_mask_coordinates_from_lr_window(
v0, v1, y_total, x_total, false);
tmp.y = r.at(ck_tile::number<0>{});
tmp.x = r.at(ck_tile::number<1>{});
tmp.left = v0;
tmp.right = v1;
}
else if(t == "g")
{
tmp.y = v0;
tmp.x = v1;
tmp.left = v0; // TODO: don't use this?
tmp.right = v1;
}
else
{
printf("not supported type %s, %s\n", t.c_str(), str.c_str());
assert(0);
}
}
}
else
{
auto set_causal_top_left = [&]() {
tmp.type = mask_enum::mask_top_left;
tmp.y = seqlen_q;
tmp.x = 1;
tmp.left = -1;
tmp.right = 0;
};
auto set_causal_bottom_right = [&]() {
tmp.type = mask_enum::mask_bottom_right;
tmp.y = seqlen_q;
tmp.x = seqlen_k - seqlen_q + 1;
tmp.left = -1;
tmp.right = 0;
};
if(str == "t")
set_causal_top_left();
else if(str == "b")
set_causal_bottom_right();
else
{
tmp.type = static_cast<mask_enum>(atoi(str.c_str()));
if(tmp.type == mask_enum::mask_top_left)
{
set_causal_top_left();
}
else if(tmp.type == mask_enum::mask_bottom_right)
{
set_causal_bottom_right();
}
}
}
return tmp;
}
friend std::ostream& operator<<(std::ostream& os, const mask_info& mi)
{
mi.serialize(os);
return os;
}
};

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@ -22,6 +22,7 @@ fmha_fwd_traits get_ck_fmha_fwd_traits(const mask_info &mask,
dtype,
false, // is_group_mode
true, // is_v_rowmajor
false, // has_logits_soft_cap
mask.type,
enable_bias ? bias_enum::elementwise_bias : bias_enum::no_bias,
has_lse,
@ -85,6 +86,7 @@ fmha_fwd_args get_ck_fmha_fwd_args(bool has_lse,
ck_tile::index_t stride_attn_bias = 0;
ck_tile::index_t batch_stride_bias = 0;
ck_tile::index_t nhead_stride_bias = 0;
if (attn_bias_.has_value()) {
auto a_b = attn_bias_.value();
CHECK_DEVICE(a_b);
@ -94,7 +96,6 @@ fmha_fwd_args get_ck_fmha_fwd_args(bool has_lse,
nhead_stride_bias = a_b.stride(1);
batch_stride_bias = a_b.stride(0);
}
return fmha_fwd_args{q.data_ptr(),
k.data_ptr(),
v.data_ptr(),
@ -116,6 +117,7 @@ fmha_fwd_args get_ck_fmha_fwd_args(bool has_lse,
softmax_scale, // scale_s
1, // scale_p
1, // scale_o
0.0f, // logits_soft_cap
stride_q,
stride_k,
stride_v,
@ -139,6 +141,7 @@ fmha_fwd_args get_ck_fmha_fwd_args(bool has_lse,
mask.left,
mask.right,
static_cast<ck_tile::index_t>(mask.type),
-1, // min_seqlen_q
p_dropout,
has_dropout_randval,
drop_seed_offset};

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@ -20,6 +20,7 @@ fmha_fwd_traits get_ck_fmha_varlen_fwd_traits(const mask_info &mask,
dtype,
true, // is_group_mode
true, // is_v_rowmajor
false, // has_logits_soft_cap
mask.type,
enable_bias ? bias_enum::elementwise_bias : bias_enum::no_bias,
has_lse,
@ -117,6 +118,7 @@ fmha_fwd_args get_ck_fmha_varlen_fwd_args(bool has_lse,
softmax_scale, // scale_s
1, // scale_p
1, // scale_o
0.0f, // logits_soft_cap
stride_q,
stride_k,
stride_v,
@ -140,6 +142,7 @@ fmha_fwd_args get_ck_fmha_varlen_fwd_args(bool has_lse,
mask.left,
mask.right,
static_cast<ck_tile::index_t>(mask.type),
-1, // min_seqlen_q
p_dropout,
has_dropout_randval,
drop_seed_offset};

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@ -1,84 +0,0 @@
// 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/host/host_tensor.hpp>
#include <cassert>
#include <cmath>
#include <functional>
#include <iterator>
#include <optional>
#include <random>
#include <tuple>
// keep sync with RotaryEmbeddingEnum
enum class rope_enum
{
none = 0,
interleaved = 1,
half_rotated = 2,
};
template <typename DataType>
std::tuple<ck_tile::HostTensor<DataType>, ck_tile::HostTensor<DataType>>
generate_rotary_cos_sin(ck_tile::index_t seqlen,
ck_tile::index_t rotary_dim,
std::optional<unsigned> seed = std::nullopt)
{
// return dummy tensors if we won't apply RoPE at all
if(rotary_dim <= 0)
{
ck_tile::HostTensor<DataType> dummy({1, 1});
return std::make_tuple(dummy, dummy);
}
std::mt19937 random_engine(seed.has_value() ? *seed : std::random_device{}());
std::uniform_real_distribution<float> generator(0.0f, 1.0f);
const ck_tile::index_t num_rows = seqlen * 2;
const ck_tile::index_t num_cols = rotary_dim / 2;
using std::begin, std::end;
ck_tile::HostTensor<float> angle({num_rows, num_cols});
std::generate(begin(angle), end(angle), [&] { return generator(random_engine) * 2 * M_PI; });
ck_tile::HostTensor<DataType> cos({num_rows, num_cols});
std::transform(begin(angle), end(angle), begin(cos), [](float origin_value) {
return ck_tile::type_convert<DataType>(std::cos(origin_value));
});
ck_tile::HostTensor<DataType> sin({num_rows, num_cols});
std::transform(begin(angle), end(angle), begin(sin), [](float origin_value) {
return ck_tile::type_convert<DataType>(std::sin(origin_value));
});
return std::make_tuple(cos, sin);
}
template <typename DataType>
std::tuple<ck_tile::HostTensor<DataType>, ck_tile::HostTensor<DataType>>
slice_rotary_cos_sin(const ck_tile::HostTensor<DataType>& cos,
const ck_tile::HostTensor<DataType>& sin,
ck_tile::index_t seqlen_offset,
ck_tile::index_t seqlen)
{
assert(cos.get_num_of_dimension() == 2 && sin.get_num_of_dimension() == 2);
assert(cos.get_length(0) == sin.get_length(0) && cos.get_length(1) == sin.get_length(1));
assert(static_cast<std::size_t>(seqlen_offset + seqlen) <= cos.get_length(0));
const ck_tile::index_t num_rows = seqlen;
const ck_tile::index_t num_cols = cos.get_length(1);
ck_tile::HostTensor<DataType> cos_pt({num_rows, num_cols});
cos_pt.ForEach([&](auto& self, auto i) { self(i) = cos(i[0] + seqlen_offset, i[1]); });
ck_tile::HostTensor<DataType> sin_pt({num_rows, num_cols});
sin_pt.ForEach([&](auto& self, auto i) { self(i) = sin(i[0] + seqlen_offset, i[1]); });
return std::make_tuple(cos_pt, sin_pt);
}