mirror of
https://github.com/ROCm/composable_kernel.git
synced 2026-04-20 06:49:15 +00:00
[Ck tile] support rmsnorm and related fusion (#1605)
* Add reduce2d new api
* Prevent user use cross warp reduction
* Fix bug of std caculation
* Add rmsnorm2d
* Add rmsnorm small example
* Remove static assert to prevent compile fail
* Add script to test performance and correctness
* Add missing cmake change
* refine naming
* refine example of rmsnorm
* Fix bug of rmsnorm
* Refine naming
* Fix cmake
* clang format
* Refine pipeline name
* Add add_rmsnorm2d_rdquant kernel
* Add reduce op
* host verification
* Fix bug of one pass pipeline
* Refine tile size
* Add two pass pipeline
* Rename two pass to three pass
* Fix bug of kSaveX == false
* Add instance library
* Add test script
* Fix bug of x verification
* Add save_x to trait
* Add README
* Move reduce2d into reduce folder
* Fix bug of welford when number of m warp > 1
* remove reduncant comment
* 1. move 06_rmsnorm2d to 10_rmsnorm2d
2. move 07_add_rmsnorm2d_rdquant to 11_add_rmsnorm2d_rdquant
* clang format and add missing header
* Add host validation of add + layernorm2d + rsquant
* Revert "Add host validation of add + layernorm2d + rsquant"
This reverts commit 936cb45797.
* Remove deprecated flag
This commit is contained in:
rocking
202
include/ck_tile/ops/rmsnorm2d/kernel/rmsnorm2d_fwd_kernel.hpp
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202
include/ck_tile/ops/rmsnorm2d/kernel/rmsnorm2d_fwd_kernel.hpp
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@@ -0,0 +1,202 @@
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// SPDX-License-Identifier: MIT
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// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
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#pragma once
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#include "ck_tile/core.hpp"
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#include "ck_tile/ops/common.hpp"
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namespace ck_tile {
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// host side args
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struct Rmsnorm2dFwdHostArgs
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{
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const void* p_x;
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const void* p_gamma;
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void* p_y;
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void* p_invRms;
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float epsilon;
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index_t m;
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index_t n;
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index_t stride; // row_stride
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};
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// TODO: Extract some type to wrapper class
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template <typename Pipeline_>
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struct Rmsnorm2dFwd
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{
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using Pipeline = remove_cvref_t<Pipeline_>;
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using Problem = typename Pipeline::Problem;
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using XDataType = remove_cvref_t<typename Problem::XDataType>;
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using GammaDataType = remove_cvref_t<typename Problem::GammaDataType>;
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using ComputeDataType = remove_cvref_t<typename Problem::ComputeDataType>;
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using YDataType = remove_cvref_t<typename Problem::YDataType>;
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using InvRmsDataType = remove_cvref_t<typename Problem::InvRmsDataType>;
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static constexpr bool kHasGamma = !std::is_same_v<GammaDataType, null_type>;
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static constexpr bool kSaveInvRms = Problem::kSaveInvRms;
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static constexpr index_t Block_M = Problem::BlockShape::Block_M;
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static constexpr index_t Block_N = Problem::BlockShape::Block_N;
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static constexpr bool kPadM = false; // always no need to pad along M
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static constexpr bool kPadN = Problem::kPadN;
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static constexpr bool kTwoPass = Problem::kTwoPass;
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static constexpr index_t ThreadPerWarp_N = Problem::BlockShape::ThreadPerWarp_N;
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static constexpr index_t Vector_N = Problem::BlockShape::Vector_N;
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static constexpr index_t Repeat_N = Problem::BlockShape::Repeat_N;
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static constexpr auto I0 = number<0>{};
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static constexpr auto I1 = number<1>{};
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struct Kargs
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{
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const void* p_x;
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const void* p_gamma;
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void* p_y;
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void* p_invRms;
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float epsilon;
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index_t m;
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index_t n;
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index_t stride; // row_stride
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};
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using Hargs = Rmsnorm2dFwdHostArgs;
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CK_TILE_HOST static constexpr Kargs MakeKargs(const Hargs& hargs)
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{
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return Kargs{hargs.p_x,
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hargs.p_gamma,
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hargs.p_y,
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hargs.p_invRms,
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hargs.epsilon,
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hargs.m,
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hargs.n,
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hargs.stride};
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}
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CK_TILE_HOST static constexpr auto GridSize(const Hargs& hargs)
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{
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return (hargs.m + Block_M - 1) / Block_M;
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}
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CK_TILE_HOST static constexpr auto BlockSize() { return Problem::BlockShape::BlockSize; }
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// clang-format off
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template <typename T> struct t2s;
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template <> struct t2s<float> { static constexpr const char * name = "fp32"; };
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template <> struct t2s<ck_tile::fp16_t> { static constexpr const char * name = "fp16"; };
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template <> struct t2s<ck_tile::bf16_t> { static constexpr const char * name = "bf16"; };
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template <> struct t2s<ck_tile::fp8_t> { static constexpr const char * name = "fp8"; };
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template <> struct t2s<ck_tile::bf8_t> { static constexpr const char * name = "bf8"; };
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// clang-format on
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// in byte
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CK_TILE_HOST_DEVICE static constexpr index_t GetSmemSize() { return Pipeline::GetSmemSize(); }
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CK_TILE_HOST static std::string GetName()
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{
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// clang-format off
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using S_ = typename Problem::BlockShape;
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auto surfix = [&] () {
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std::string n;
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if (kPadN) n += "_pn";
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if (kSaveInvRms) n += "_rms";
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if (kTwoPass) n += "_2p";
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return n; }();
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#define _SS_ std::string
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#define _TS_ std::to_string
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return _SS_("rmsnorm2d_fwd_") + _SS_(t2s<XDataType>::name) + "_" +
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_TS_(S_::Block_M) + "x" + _TS_(S_::Block_N) + "_" + _TS_(S_::WarpPerBlock_M) + "x" + _TS_(S_::WarpPerBlock_N) + "_" +
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_TS_(S_::Warp_M) + "x" + _TS_(S_::Warp_N) + "_" + _TS_(S_::Vector_M) + "x" + _TS_(S_::Vector_N) + "_" +
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_SS_(Pipeline::name) + surfix;
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#undef _SS_
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#undef _TS_
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// clang-format on
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}
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CK_TILE_DEVICE void operator()(Kargs kargs) const
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{
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const auto iM = get_block_id() * Block_M;
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const auto x_window = [&]() {
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const auto tmp_ = make_naive_tensor_view<address_space_enum::global>(
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static_cast<const XDataType*>(kargs.p_x),
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make_tuple(kargs.m, kargs.n),
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make_tuple(kargs.stride, 1),
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number<Vector_N>{},
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number<1>{});
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const auto tmp2_ = pad_tensor_view(
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tmp_, make_tuple(number<Block_M>{}, number<Block_N>{}), sequence<kPadM, kPadN>{});
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return make_tile_window(
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tmp2_, make_tuple(number<Block_M>{}, number<Block_N>{}), {iM, 0});
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}();
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const auto gamma_window = [&]() {
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const auto tmp_ = make_naive_tensor_view<address_space_enum::global>(
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static_cast<const GammaDataType*>(kargs.p_gamma),
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make_tuple(kargs.n),
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make_tuple(1),
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number<Vector_N>{},
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number<1>{});
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const auto tmp2_ =
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pad_tensor_view(tmp_, make_tuple(number<Block_N>{}), sequence<kPadM>{});
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return make_tile_window(tmp2_, make_tuple(number<Block_N>{}), {0});
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}();
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auto y_window = [&]() {
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auto tmp_ = make_naive_tensor_view<address_space_enum::global>(
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static_cast<YDataType*>(kargs.p_y),
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make_tuple(kargs.m, kargs.n),
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make_tuple(kargs.stride, 1),
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number<Vector_N>{},
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number<1>{});
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auto tmp2_ = pad_tensor_view(
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tmp_, make_tuple(number<Block_M>{}, number<Block_N>{}), sequence<kPadM, kPadN>{});
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return make_tile_window(
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tmp2_, make_tuple(number<Block_M>{}, number<Block_N>{}), {iM, 0});
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}();
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auto inv_rms_window = [&]() {
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if constexpr(kSaveInvRms)
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{
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const auto inv_rms_m = [&]() {
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const auto inv_rms_dram_naive =
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make_naive_tensor_view_packed<address_space_enum::global>(
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static_cast<InvRmsDataType*>(kargs.p_invRms),
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make_tuple(kargs.m),
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number<1>{});
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return pad_tensor_view(
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inv_rms_dram_naive, make_tuple(number<Block_M>{}), sequence<kPadM>{});
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}();
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return make_tile_window(inv_rms_m, make_tuple(number<Block_M>{}), {iM});
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}
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else
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return make_null_tile_window(make_tuple(number<Block_M>{}));
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}();
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__shared__ char smem[GetSmemSize()];
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Pipeline{}(x_window,
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gamma_window,
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y_window,
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inv_rms_window,
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static_cast<const ComputeDataType>(kargs.epsilon),
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kargs.n,
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smem);
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}
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};
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} // namespace ck_tile
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78
include/ck_tile/ops/rmsnorm2d/kernel/rmsnorm2d_fwd_shape.hpp
Normal file
78
include/ck_tile/ops/rmsnorm2d/kernel/rmsnorm2d_fwd_shape.hpp
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@@ -0,0 +1,78 @@
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// SPDX-License-Identifier: MIT
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// Copyright (c) 2018-2023, Advanced Micro Devices, Inc. All rights reserved.
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#pragma once
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#include "ck_tile/core.hpp"
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namespace ck_tile {
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/*
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// clang-format off
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4-level descriptor: BlockTile-> WarpPerBlock-> WarpTile-> Vector
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Block_N (Warp_N * WarpPerBlock_N * Repeat_N )
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+<----------------------< Repeat_N(2)>--------------------->+
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| |
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+<-- <WarpPerBlock_N(2)> -->+
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Warp_N
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+--------------+--------------+--------------+--------------+----+----------------+
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Warp_M | wrap_0 | wrap_1 | | ^ ^
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+--------------+--------------+ | <WarpPerBlock_M(2)> |
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| wrap_2 | wrap_3 | | v
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+--------------+--------------+--------------+--------------+----+ Block_M
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| | |
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+ + |
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| | | v
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+--------------+--------------+--------------+--------------+ +
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each Warp-tile (e.g 16 thrd per row)
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Vector_N (contiguous pixels each thrd holds along N, or vector size)
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+-----------+-----------+-----------+-----------+-----------+
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| thrd_0 | thrd_1 | thrd_2 | thrd_3 | ... Vector_M
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+-----------+-----------+-----------+-----------+-----------+
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| thrd_16 | thrd_17 | thrd_18 | thrd_19 | ...
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+-----------+-----------+-----------+-----------+-----------+
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// clang-format on
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*/
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template <typename BlockTile_, // block size, seq<M, N>
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typename WarpPerBlock_, // num warps along seq<M, N>
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typename WarpTile_, // warp size, seq<M, N>
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typename Vector_, // contiguous pixels(vector size) along seq<M, N>
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index_t BlockSize_ =
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warpSize* reduce_on_sequence(WarpPerBlock_{}, multiplies{}, number<1>{})>
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struct Rmsnorm2dShape
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{
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// block size
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static constexpr index_t Block_M = BlockTile_::at(number<0>{});
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static constexpr index_t Block_N = BlockTile_::at(number<1>{});
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// num warps along seq<M, N>, within each block
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static constexpr index_t WarpPerBlock_M = WarpPerBlock_::at(number<0>{});
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static constexpr index_t WarpPerBlock_N = WarpPerBlock_::at(number<1>{});
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// warp size
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static constexpr index_t Warp_M = WarpTile_::at(number<0>{});
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static constexpr index_t Warp_N = WarpTile_::at(number<1>{});
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static_assert(Block_M % (WarpPerBlock_M * Warp_M) == 0);
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static_assert(Block_N % (WarpPerBlock_N * Warp_N) == 0);
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// repeat of each thread along seq<M, N>
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static constexpr index_t Repeat_M = Block_M / (WarpPerBlock_M * Warp_M);
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static constexpr index_t Repeat_N = Block_N / (WarpPerBlock_N * Warp_N);
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// vector size along seq<M, N>
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static constexpr index_t Vector_M = Vector_::at(number<0>{});
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static constexpr index_t Vector_N = Vector_::at(number<1>{});
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static_assert(Warp_M % Vector_M == 0);
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static_assert(Warp_N % Vector_N == 0);
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// num of threads along seq<M, N>, within each warp
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static constexpr index_t ThreadPerWarp_M = Warp_M / Vector_M;
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static constexpr index_t ThreadPerWarp_N = Warp_N / Vector_N;
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static constexpr index_t BlockSize = BlockSize_;
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};
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} // namespace ck_tile
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@@ -0,0 +1,94 @@
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// SPDX-License-Identifier: MIT
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// Copyright (c) 2018-2024, Advanced Micro Devices, Inc. All rights reserved.
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#pragma once
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#include "ck_tile/core.hpp"
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#include "ck_tile/ops/reduce/block/block_reduce2d_problem.hpp"
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#include "ck_tile/ops/reduce/block/block_reduce2d.hpp"
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namespace ck_tile {
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struct Rmsnorm2dFwdPipelineDefaultPolicy
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{
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template <typename Problem>
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CK_TILE_DEVICE static constexpr auto MakeXBlockTileDistribution()
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{
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using S = typename Problem::BlockShape;
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return make_static_tile_distribution(
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tile_distribution_encoding<
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sequence<>,
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tuple<sequence<S::Repeat_M, S::WarpPerBlock_M, S::ThreadPerWarp_M, S::Vector_M>,
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sequence<S::Repeat_N, S::WarpPerBlock_N, S::ThreadPerWarp_N, S::Vector_N>>,
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tuple<sequence<1, 2>, sequence<1, 2>>,
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tuple<sequence<1, 1>, sequence<2, 2>>,
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sequence<1, 1, 2, 2>,
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sequence<0, 3, 0, 3>>{});
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}
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template <typename Problem>
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CK_TILE_DEVICE static constexpr auto MakeGammaBlockTileDistribution()
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{
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using S = typename Problem::BlockShape;
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return make_static_tile_distribution(
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tile_distribution_encoding<
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sequence<S::WarpPerBlock_M, S::ThreadPerWarp_M>,
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tuple<sequence<S::Repeat_N, S::WarpPerBlock_N, S::ThreadPerWarp_N, S::Vector_N>>,
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tuple<sequence<0, 1>, sequence<0, 1>>,
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tuple<sequence<0, 1>, sequence<1, 2>>,
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sequence<1, 1>,
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sequence<0, 3>>{});
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}
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template <typename Problem>
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CK_TILE_HOST_DEVICE static constexpr auto GetBlockReduce2d()
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{
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using P_ = BlockReduce2dProblem<typename Problem::XDataType,
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typename Problem::ComputeDataType,
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typename Problem::BlockShape>;
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return BlockReduce2d<P_>{};
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}
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template <typename Problem>
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CK_TILE_HOST_DEVICE static constexpr auto GetBlockReduce2dSync()
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{
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using P_ = BlockReduce2dProblem<typename Problem::XDataType,
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typename Problem::ComputeDataType,
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typename Problem::BlockShape>;
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return BlockReduce2dSync<P_>{};
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}
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template <typename Problem>
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CK_TILE_HOST_DEVICE static constexpr auto GetBlockReduce2dCrossWarpSync()
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{
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using P_ = BlockReduce2dProblem<typename Problem::XDataType,
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typename Problem::ComputeDataType,
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typename Problem::BlockShape>;
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return BlockReduce2dCrossWarpSync<P_>{};
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}
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template <typename Problem>
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CK_TILE_HOST_DEVICE static constexpr index_t GetSmemSize()
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{
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if constexpr(Problem::kNeedCrossWarpSync)
|
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{
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using P_ = BlockReduce2dProblem<typename Problem::XDataType,
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typename Problem::ComputeDataType,
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typename Problem::BlockShape>;
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using block_reduce2d = BlockReduce2d<P_>;
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using x_block_tile =
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decltype(make_static_distributed_tensor<typename Problem::XDataType>(
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MakeXBlockTileDistribution<Problem>()));
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using y_block_tile = decltype(block_reduce2d::template MakeYBlockTile<x_block_tile>());
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return GetBlockReduce2dCrossWarpSync<Problem>().template GetSmemSize<y_block_tile>();
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||||
}
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||||
else
|
||||
{
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||||
return 1; // zero size arrays are an extension
|
||||
}
|
||||
}
|
||||
};
|
||||
} // namespace ck_tile
|
||||
@@ -0,0 +1,101 @@
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||||
// 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/rmsnorm2d/pipeline/rmsnorm2d_fwd_pipeline_default_policy.hpp"
|
||||
#include <string>
|
||||
#include <type_traits>
|
||||
|
||||
namespace ck_tile {
|
||||
|
||||
template <typename Problem_, typename Policy_ = Rmsnorm2dFwdPipelineDefaultPolicy>
|
||||
struct Rmsnorm2dFwdPipelineOnePass
|
||||
{
|
||||
using Problem = ck_tile::remove_cvref_t<Problem_>;
|
||||
using Policy = ck_tile::remove_cvref_t<Policy_>;
|
||||
|
||||
using XDataType = ck_tile::remove_cvref_t<typename Problem::XDataType>;
|
||||
using GammaDataType = ck_tile::remove_cvref_t<typename Problem::GammaDataType>;
|
||||
using ComputeDataType = ck_tile::remove_cvref_t<typename Problem::ComputeDataType>;
|
||||
using YDataType = ck_tile::remove_cvref_t<typename Problem::YDataType>;
|
||||
using InvRmsDataType = ck_tile::remove_cvref_t<typename Problem::InvRmsDataType>;
|
||||
|
||||
static constexpr bool kHasGamma = !std::is_same_v<GammaDataType, ck_tile::null_type>;
|
||||
static constexpr bool kSaveInvRms = Problem::kSaveInvRms;
|
||||
|
||||
static constexpr bool kNeedCrossWarpSync = Problem::kNeedCrossWarpSync;
|
||||
static constexpr bool kPadM = false; // TODO - BlockRmsnorm2dFwdProblem::kPadM
|
||||
static constexpr bool kPadN = Problem::kPadN;
|
||||
|
||||
static constexpr const char* name = []() {
|
||||
if constexpr(kNeedCrossWarpSync)
|
||||
return "bpr_op"; // block per row
|
||||
else
|
||||
return "wpr_op"; // warp per row
|
||||
}();
|
||||
|
||||
CK_TILE_HOST_DEVICE static constexpr index_t GetSmemSize()
|
||||
{
|
||||
return Policy::template GetSmemSize<Problem>();
|
||||
}
|
||||
|
||||
template <typename XWindow, typename GammaWindow, typename YWindow, typename InvRmsWindow>
|
||||
CK_TILE_DEVICE auto operator()(const XWindow& x_window_,
|
||||
const GammaWindow& gamma_window_,
|
||||
YWindow& y_window,
|
||||
InvRmsWindow& inv_rms_window,
|
||||
ComputeDataType epsilon,
|
||||
ck_tile::index_t row_size,
|
||||
void* smem) const
|
||||
{
|
||||
const auto x_window =
|
||||
make_tile_window(x_window_, Policy::template MakeXBlockTileDistribution<Problem>());
|
||||
const auto gamma_window = make_tile_window(
|
||||
gamma_window_, Policy::template MakeGammaBlockTileDistribution<Problem>());
|
||||
|
||||
auto reduce_square_sum_func = ReduceOp::SquareAdd{};
|
||||
auto reduce_sum_func = ReduceOp::Add{};
|
||||
auto block_reduce2d = Policy::template GetBlockReduce2d<Problem>();
|
||||
auto block_reduce2d_sync = Policy::template GetBlockReduce2dSync<Problem>();
|
||||
auto block_reduce2d_cross_warp_sync =
|
||||
Policy::template GetBlockReduce2dCrossWarpSync<Problem>();
|
||||
|
||||
const auto x = load_tile(x_window);
|
||||
// load gamma (TODO: support no gamma?)
|
||||
const auto gamma = load_tile(gamma_window);
|
||||
|
||||
// compute mean square each-thread->cross-lane->cross-warp
|
||||
auto square_sum = block_reduce2d(
|
||||
x, reduce_square_sum_func.GetIdentityValue<ComputeDataType>(), reduce_square_sum_func);
|
||||
block_reduce2d_sync(square_sum, reduce_sum_func);
|
||||
block_reduce2d_cross_warp_sync(square_sum, smem, reduce_sum_func);
|
||||
|
||||
// compute inv-rms
|
||||
auto inv_rms = tile_elementwise_in(
|
||||
[&](const auto& v_) {
|
||||
return type_convert<ComputeDataType>(1.0f) / (sqrt(v_ / row_size + epsilon));
|
||||
},
|
||||
square_sum);
|
||||
|
||||
if constexpr(kSaveInvRms)
|
||||
store_tile(inv_rms_window, cast_tile<InvRmsDataType>(inv_rms));
|
||||
|
||||
// rmsnorm computation
|
||||
auto y = make_static_distributed_tensor<YDataType>(x.get_tile_distribution());
|
||||
sweep_tile(y, [&, inv_rms_ = inv_rms](auto idx) {
|
||||
constexpr auto i_idx = make_tuple(idx[number<0>{}]);
|
||||
constexpr auto j_idx = make_tuple(idx[number<1>{}]);
|
||||
|
||||
const auto gamma_ = type_convert<ComputeDataType>(gamma[j_idx]);
|
||||
|
||||
const auto x_ = type_convert<ComputeDataType>(x[idx]);
|
||||
auto y_ = x_ * inv_rms_[i_idx] * gamma_;
|
||||
|
||||
y(idx) = type_convert<YDataType>(y_);
|
||||
});
|
||||
store_tile(y_window, y);
|
||||
}
|
||||
};
|
||||
} // namespace ck_tile
|
||||
@@ -0,0 +1,36 @@
|
||||
// SPDX-License-Identifier: MIT
|
||||
// Copyright (c) 2018-2023, Advanced Micro Devices, Inc. All rights reserved.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "ck_tile/core/utility/type_traits.hpp"
|
||||
|
||||
namespace ck_tile {
|
||||
|
||||
template <typename XDataType_,
|
||||
typename GammaDataType_,
|
||||
typename ComputeDataType_,
|
||||
typename YDataType_,
|
||||
typename InvRmsDataType_,
|
||||
typename BlockShape_,
|
||||
bool kPadN_,
|
||||
bool kSaveInvRms_,
|
||||
bool kTwoPass_>
|
||||
struct Rmsnorm2dFwdPipelineProblem
|
||||
{
|
||||
using XDataType = remove_cvref_t<XDataType_>;
|
||||
using GammaDataType = remove_cvref_t<GammaDataType_>;
|
||||
using ComputeDataType = remove_cvref_t<ComputeDataType_>;
|
||||
using YDataType = remove_cvref_t<YDataType_>;
|
||||
using InvRmsDataType = remove_cvref_t<InvRmsDataType_>;
|
||||
using BlockShape = remove_cvref_t<BlockShape_>;
|
||||
|
||||
static constexpr bool kNeedCrossLaneSync = BlockShape::ThreadPerWarp_N > 1;
|
||||
static constexpr bool kNeedCrossWarpSync = BlockShape::WarpPerBlock_N > 1;
|
||||
|
||||
static constexpr bool kPadN = kPadN_;
|
||||
static constexpr bool kSaveInvRms = kSaveInvRms_;
|
||||
static constexpr bool kTwoPass = kTwoPass_;
|
||||
};
|
||||
|
||||
} // namespace ck_tile
|
||||
@@ -0,0 +1,131 @@
|
||||
// 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/rmsnorm2d/pipeline/rmsnorm2d_fwd_pipeline_default_policy.hpp"
|
||||
#include <string>
|
||||
#include <type_traits>
|
||||
|
||||
namespace ck_tile {
|
||||
|
||||
template <typename Problem_, typename Policy_ = Rmsnorm2dFwdPipelineDefaultPolicy>
|
||||
struct Rmsnorm2dFwdPipelineTwoPass
|
||||
{
|
||||
using Problem = ck_tile::remove_cvref_t<Problem_>;
|
||||
using Policy = ck_tile::remove_cvref_t<Policy_>;
|
||||
|
||||
using XDataType = ck_tile::remove_cvref_t<typename Problem::XDataType>;
|
||||
using GammaDataType = ck_tile::remove_cvref_t<typename Problem::GammaDataType>;
|
||||
using ComputeDataType = ck_tile::remove_cvref_t<typename Problem::ComputeDataType>;
|
||||
using YDataType = ck_tile::remove_cvref_t<typename Problem::YDataType>;
|
||||
using InvRmsDataType = ck_tile::remove_cvref_t<typename Problem::InvRmsDataType>;
|
||||
|
||||
static constexpr bool kHasGamma = !std::is_same_v<GammaDataType, ck_tile::null_type>;
|
||||
static constexpr bool kSaveInvRms = Problem::kSaveInvRms;
|
||||
|
||||
static constexpr bool kNeedCrossWarpSync = Problem::kNeedCrossWarpSync;
|
||||
static constexpr bool kPadM = false; // TODO - BlockRmsnorm2dFwdProblem::kPadM
|
||||
static constexpr bool kPadN = Problem::kPadN;
|
||||
|
||||
static constexpr const char* name = []() {
|
||||
if constexpr(kNeedCrossWarpSync)
|
||||
return "bpr_tp"; // block per row
|
||||
else
|
||||
return "wpr_tp"; // warp per row
|
||||
}();
|
||||
|
||||
CK_TILE_HOST_DEVICE static constexpr index_t GetSmemSize()
|
||||
{
|
||||
return Policy::template GetSmemSize<Problem>();
|
||||
}
|
||||
|
||||
template <typename XWindow, typename GammaWindow, typename YWindow, typename InvRmsWindow>
|
||||
CK_TILE_DEVICE auto operator()(const XWindow& x_window_,
|
||||
const GammaWindow& gamma_window_,
|
||||
YWindow& y_window,
|
||||
InvRmsWindow& inv_rms_window,
|
||||
ComputeDataType epsilon,
|
||||
ck_tile::index_t row_size,
|
||||
void* smem) const
|
||||
{
|
||||
auto x_window =
|
||||
make_tile_window(x_window_, Policy::template MakeXBlockTileDistribution<Problem>());
|
||||
auto gamma_window = make_tile_window(
|
||||
gamma_window_, Policy::template MakeGammaBlockTileDistribution<Problem>());
|
||||
|
||||
// Problem::BlockShape
|
||||
static constexpr index_t Block_N = Problem::BlockShape::Block_N;
|
||||
index_t num_n_tile_iteration =
|
||||
__builtin_amdgcn_readfirstlane(integer_divide_ceil(row_size, Block_N));
|
||||
|
||||
auto reduce_square_sum_func = ReduceOp::SquareAdd{};
|
||||
auto reduce_sum_func = ReduceOp::Add{};
|
||||
auto block_reduce2d = Policy::template GetBlockReduce2d<Problem>();
|
||||
auto block_reduce2d_sync = Policy::template GetBlockReduce2dSync<Problem>();
|
||||
auto block_reduce2d_cross_warp_sync =
|
||||
Policy::template GetBlockReduce2dCrossWarpSync<Problem>();
|
||||
|
||||
using XTensorType = decltype(load_tile(x_window));
|
||||
auto square_sum = block_reduce2d.template MakeYBlockTile<XTensorType>();
|
||||
set_tile(square_sum, reduce_square_sum_func.GetIdentityValue<ComputeDataType>());
|
||||
|
||||
for(int iN = __builtin_amdgcn_readfirstlane(0); iN < num_n_tile_iteration; ++iN)
|
||||
{
|
||||
const auto x = load_tile(x_window);
|
||||
block_reduce2d(x, square_sum, reduce_square_sum_func);
|
||||
move_tile_window(x_window, {0, Block_N});
|
||||
}
|
||||
|
||||
block_reduce2d_sync(square_sum, reduce_sum_func);
|
||||
block_reduce2d_cross_warp_sync(square_sum, smem, reduce_sum_func);
|
||||
|
||||
// compute inv-rms
|
||||
auto inv_rms = tile_elementwise_in(
|
||||
[&](const auto& v_) {
|
||||
return type_convert<ComputeDataType>(1.0f) / (sqrt(v_ / row_size + epsilon));
|
||||
},
|
||||
square_sum);
|
||||
|
||||
if constexpr(kSaveInvRms)
|
||||
store_tile(inv_rms_window, cast_tile<InvRmsDataType>(inv_rms));
|
||||
|
||||
// reverse read x to reuse cache
|
||||
ck_tile::index_t stride_to_right_most_window =
|
||||
row_size % Block_N == 0 ? row_size - Block_N : row_size - row_size % Block_N;
|
||||
|
||||
move_tile_window(x_window, {0, -Block_N});
|
||||
move_tile_window(gamma_window, {stride_to_right_most_window});
|
||||
move_tile_window(y_window, {0, stride_to_right_most_window});
|
||||
|
||||
// rmsnorm computation
|
||||
for(int iN = __builtin_amdgcn_readfirstlane(0); iN < num_n_tile_iteration; ++iN)
|
||||
{
|
||||
const auto x = load_tile(x_window);
|
||||
// load gamma/beta (TODO: support no gamma/beta?)
|
||||
const auto gamma = load_tile(gamma_window);
|
||||
|
||||
auto y = make_static_distributed_tensor<YDataType>(x.get_tile_distribution());
|
||||
|
||||
sweep_tile(y, [&, inv_rms_ = inv_rms](auto idx) {
|
||||
constexpr auto i_idx = make_tuple(idx[number<0>{}]);
|
||||
constexpr auto j_idx = make_tuple(idx[number<1>{}]);
|
||||
|
||||
const auto gamma_ = type_convert<ComputeDataType>(gamma[j_idx]);
|
||||
|
||||
const auto x_ = type_convert<ComputeDataType>(x[idx]);
|
||||
auto y_ = x_ * inv_rms_[i_idx] * gamma_;
|
||||
|
||||
y(idx) = type_convert<YDataType>(y_);
|
||||
});
|
||||
|
||||
store_tile(y_window, y);
|
||||
|
||||
move_tile_window(x_window, {0, -Block_N});
|
||||
move_tile_window(gamma_window, {-Block_N});
|
||||
move_tile_window(y_window, {0, -Block_N});
|
||||
}
|
||||
}
|
||||
};
|
||||
} // namespace ck_tile
|
||||
Reference in New Issue
Block a user