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Composable Kernel: /home/docs/checkouts/readthedocs.org/user_builds/advanced-micro-devices-composable-kernel/checkouts/develop/include/ck_tile/ops/smoothquant/pipeline/smoothquant_pipeline_one_pass.hpp Source File
smoothquant_pipeline_one_pass.hpp
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1 // SPDX-License-Identifier: MIT
2 // Copyright (c) 2018-2025, Advanced Micro Devices, Inc. All rights reserved.
3 
4 #pragma once
5 
6 #include "ck_tile/core.hpp"
8 #include <string>
9 #include <type_traits>
10 
11 namespace ck_tile {
12 
13 template <typename Problem_, typename Policy_ = SmoothquantPipelineDefaultPolicy>
15 {
18 
24 
25  static constexpr bool kNeedCrossWarpSync = Problem::kNeedCrossWarpSync;
26  static constexpr bool kPadM = false; // TODO - BlockSmoothquantProblem::kPadM
27  static constexpr bool kPadN = Problem::kPadN;
28  static constexpr bool UseMax3 = true; // TODO - Move to trait
29 
30  static constexpr const char* name = []() {
31  if constexpr(kNeedCrossWarpSync)
32  return "bpr_op"; // block per row
33  else
34  return "wpr_op"; // warp per row
35  }();
36 
38  {
39  return Policy::template GetSmemSize<Problem>();
40  }
41 
42  template <typename XWindow,
43  typename SmoothScaleWindow,
44  typename QYWindow,
45  typename YScaleWindow>
46  CK_TILE_DEVICE auto operator()(const XWindow& x_window_,
47  const SmoothScaleWindow& smscale_window_,
48  YScaleWindow& yscale_window,
49  QYWindow& qy_window,
51  void* smem) const
52  {
53  auto x_window =
54  make_tile_window(x_window_, Policy::template MakeXBlockTileDistribution<Problem>());
55  auto smscale_window = make_tile_window(
56  smscale_window_, Policy::template MakeSmoothScaleBlockTileDistribution<Problem>());
57 
58  auto reduce_absmax_func = ReduceOp::AbsMax{};
59  auto reduce_absmax3_func = [](auto acc_, auto v_0_, auto v_1_) {
60  float rtn;
61  asm volatile("v_max3_f32 %0, %1, abs(%2), abs(%3)"
62  : "=v"(rtn)
63  : "v"(acc_), "v"(v_0_), "v"(v_1_));
64  return rtn;
65  };
66  auto reduce_max_func = ReduceOp::Max{};
67 
68  auto block_reduce2d = Policy::template GetBlockReduce2d<Problem>();
69  auto block_reduce2d_sync = Policy::template GetBlockReduce2dSync<Problem>();
70  auto block_reduce2d_cross_warp_sync =
71  Policy::template GetBlockReduce2dCrossWarpSync<Problem>();
72 
73  const auto x = load_tile(x_window);
74  const auto smscale = load_tile(smscale_window);
75  auto y = tile_elementwise_in(
76  [&](const auto& a, const auto& b) {
77  return type_convert<ComputeDataType>(a) * type_convert<ComputeDataType>(b);
78  },
79  x,
80  smscale);
81 
82  // compute absmax, cross-lane->cross-warp
83  auto absmax = [&]() {
84  constexpr auto x_size_per_row =
85  x.get_tile_distribution().get_ys_to_d_descriptor().get_lengths().at(number<1>{});
86  if constexpr(UseMax3 && std::is_same_v<ComputeDataType, float> &&
87  x_size_per_row % 2 == 0)
88  {
89  return block_reduce2d(y,
90  reduce_absmax_func.GetIdentityValue<ComputeDataType>(),
91  reduce_absmax3_func,
92  sequence<1, 2>{});
93  }
94  else
95  {
96  return block_reduce2d(
97  y, reduce_absmax_func.GetIdentityValue<ComputeDataType>(), reduce_absmax_func);
98  }
99  }();
100  block_reduce2d_sync(absmax, reduce_max_func);
101  block_reduce2d_cross_warp_sync(absmax, smem, reduce_max_func);
102 
103  // ex: yscale = absmax / 127 if int8
104  auto yscale = tile_elementwise_in(
105  [&](const auto& v_) {
106  return v_ / type_convert<ComputeDataType>(numeric<QYDataType>::max());
107  },
108  absmax);
109  store_tile(yscale_window, cast_tile<YScaleDataType>(yscale));
110 
111  // quantize y to qy
112  auto qy = make_static_distributed_tensor<QYDataType>(y.get_tile_distribution());
113  sweep_tile(qy, [&](auto idx) {
114  constexpr auto i_idx = make_tuple(idx[number<0>{}]);
115  auto qy_ = y[idx] / yscale[i_idx];
116  qy(idx) = type_convert<QYDataType>(saturates<QYDataType>{}(qy_));
117  });
118  store_tile(qy_window, qy);
119  }
120 };
121 } // namespace ck_tile
#define CK_TILE_DEVICE
Definition: config.hpp:41
#define CK_TILE_HOST_DEVICE
Definition: config.hpp:42
Definition: cluster_descriptor.hpp:13
CK_TILE_DEVICE auto tile_elementwise_in(const InElementFunc &in_element_func, const InTensor &... in_dstr_tensors)
Definition: tile_elementwise.hpp:40
int32_t index_t
Definition: integer.hpp:9
remove_cv_t< std::remove_reference_t< T > > remove_cvref_t
Definition: type_traits.hpp:21
constexpr CK_TILE_DEVICE auto make_tile_window(null_tensor_view, const WindowLengths &window_lengths, const multi_index< WindowLengths::size()> &, Ts &&...)
Definition: null_tile_window.hpp:75
constexpr CK_TILE_HOST_DEVICE auto make_tuple(Xs &&... xs)
Definition: tuple.hpp:360
CK_TILE_DEVICE void store_tile(tile_window_with_static_lengths< BottomTensorView_, WindowLengths_ > &tile_window_tmp, const static_distributed_tensor< DataType_, TileDistribution_ > &dstr_tensor)
Definition: store_tile.hpp:23
CK_TILE_DEVICE auto load_tile(const TileWindow_ &tile_window, number< i_access >={}, bool_constant< oob_conditional_check >={})
Definition: load_tile.hpp:22
constexpr CK_TILE_HOST_DEVICE void sweep_tile(const F &f, UnpacksPerXDim={})
Definition: sweep_tile.hpp:231
const GenericPointer< typename T::ValueType > T2 T::AllocatorType & a
Definition: pointer.h:1249
Definition: reduce_operator.hpp:91
Definition: reduce_operator.hpp:68
Definition: smoothquant_pipeline_one_pass.hpp:15
static constexpr const char * name
Definition: smoothquant_pipeline_one_pass.hpp:30
static constexpr bool UseMax3
Definition: smoothquant_pipeline_one_pass.hpp:28
CK_TILE_DEVICE auto operator()(const XWindow &x_window_, const SmoothScaleWindow &smscale_window_, YScaleWindow &yscale_window, QYWindow &qy_window, ck_tile::index_t, void *smem) const
Definition: smoothquant_pipeline_one_pass.hpp:46
ck_tile::remove_cvref_t< typename Problem::XDataType > XDataType
Definition: smoothquant_pipeline_one_pass.hpp:19
ck_tile::remove_cvref_t< Problem_ > Problem
Definition: smoothquant_pipeline_one_pass.hpp:16
static constexpr bool kPadN
Definition: smoothquant_pipeline_one_pass.hpp:27
ck_tile::remove_cvref_t< typename Problem::YScaleDataType > YScaleDataType
Definition: smoothquant_pipeline_one_pass.hpp:23
ck_tile::remove_cvref_t< typename Problem::ComputeDataType > ComputeDataType
Definition: smoothquant_pipeline_one_pass.hpp:21
ck_tile::remove_cvref_t< Policy_ > Policy
Definition: smoothquant_pipeline_one_pass.hpp:17
static constexpr bool kNeedCrossWarpSync
Definition: smoothquant_pipeline_one_pass.hpp:25
ck_tile::remove_cvref_t< typename Problem::SmoothScaleDataType > SmoothScaleDataType
Definition: smoothquant_pipeline_one_pass.hpp:20
static constexpr bool kPadM
Definition: smoothquant_pipeline_one_pass.hpp:26
ck_tile::remove_cvref_t< typename Problem::QYDataType > QYDataType
Definition: smoothquant_pipeline_one_pass.hpp:22
static constexpr CK_TILE_HOST_DEVICE index_t GetSmemSize()
Definition: smoothquant_pipeline_one_pass.hpp:37
Definition: integral_constant.hpp:13
Definition: numeric.hpp:18
Definition: unary_element_function.hpp:56
Definition: sequence.hpp:49