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batched_transpose_lds_problem.hpp
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1 // SPDX-License-Identifier: MIT
2 // Copyright (c) 2025, Advanced Micro Devices, Inc. All rights reserved.
3 
4 #pragma once
5 
6 #include "ck_tile/core.hpp"
7 
8 namespace ck_tile {
9 
10 // supports 2D transpose which will store to lds,
11 // then use ds_read_b*_tr_b* instruction to get the transposed data
12 template <typename DataType_,
13  typename BlockTile, // sequence<block_x, block_y>
14  typename NumWarps,
15  bool kPadM_,
16  bool kPadN_>
18 {
20 
21  static constexpr index_t kRowWarps_ = NumWarps::at(number<0>{});
22  static constexpr index_t kColWarps_ = NumWarps::at(number<1>{});
23  static constexpr index_t kRowPerBlock_ = BlockTile::at(number<0>{});
24  static constexpr index_t kColPerBlock_ = BlockTile::at(number<1>{});
25 
27  // warps per block
28  static constexpr index_t kLeadNumWarps = kColWarps_;
29  static constexpr index_t kSecondNumWarps = kRowWarps_;
30 
33 
36 
37  static_assert(kLeadSizePerBlock % kLeadNumWarps == 0,
38  "block dim should be divided by warp count!");
39  static_assert(kSecondSizePerBlock % kSecondNumWarps == 0,
40  "block dim should be divided by warp count!");
41  // rows/cols per warp
44 
45  static_assert(kLeadSizePerWarp % kQuadrantLeadDim == 0,
46  "xdl dim should be divided by quad dim!");
47  static_assert(kSecondSizePerWarp % kQuadrantSecondDim == 0,
48  "xdl dim should be divided by quad dim!");
49  // xdl rows/cols is divided into quadrants.
52 
53  static constexpr index_t kIterationsInSecondDim =
55 
56  // definitions to adapt to BatchedTransposeKernel
57 
58  // FIXME: support padding
59  static constexpr bool kPadM = kPadM_;
60  static constexpr bool kPadN = kPadN_;
61 
62  static constexpr auto kMPerBlock = kSecondSizePerBlock;
63  static constexpr auto kNPerBlock = kLeadSizePerBlock;
64 
65  // 128-bit is the max single-instruction bandwidth for load/store
66  static constexpr index_t MaxLoadStoreSize = 16;
67  static constexpr auto VectorSizeInput = kPadN ? 1 : MaxLoadStoreSize / sizeof(DataType);
68  static constexpr auto VectorSizeOutput = kPadM ? 1 : MaxLoadStoreSize / sizeof(DataType);
69  static constexpr auto LDSVectorSize = MaxLoadStoreSize / sizeof(DataType);
70 };
71 
72 } // namespace ck_tile
Definition: cluster_descriptor.hpp:13
int32_t index_t
Definition: integer.hpp:9
remove_cv_t< std::remove_reference_t< T > > remove_cvref_t
Definition: type_traits.hpp:21
__host__ constexpr __device__ index_t get_warp_size()
Definition: get_id.hpp:42
Definition: batched_transpose_lds_problem.hpp:18
static constexpr index_t kRowPerBlock_
Definition: batched_transpose_lds_problem.hpp:23
static constexpr index_t kBlockSize
Definition: batched_transpose_lds_problem.hpp:26
static constexpr index_t kSecondSizePerWarp
Definition: batched_transpose_lds_problem.hpp:43
static constexpr auto VectorSizeOutput
Definition: batched_transpose_lds_problem.hpp:68
static constexpr index_t kQuadrantSecondDim
Definition: batched_transpose_lds_problem.hpp:35
static constexpr index_t kRowWarps_
Definition: batched_transpose_lds_problem.hpp:21
static constexpr index_t kQuadNumPerLeadDim
Definition: batched_transpose_lds_problem.hpp:50
static constexpr index_t MaxLoadStoreSize
Definition: batched_transpose_lds_problem.hpp:66
static constexpr auto kMPerBlock
Definition: batched_transpose_lds_problem.hpp:62
static constexpr index_t kColPerBlock_
Definition: batched_transpose_lds_problem.hpp:24
static constexpr bool kPadM
Definition: batched_transpose_lds_problem.hpp:59
static constexpr index_t kIterationsInSecondDim
Definition: batched_transpose_lds_problem.hpp:53
static constexpr index_t kLeadSizePerWarp
Definition: batched_transpose_lds_problem.hpp:42
static constexpr index_t kQuadNumPerSecondDim
Definition: batched_transpose_lds_problem.hpp:51
static constexpr index_t kLeadNumWarps
Definition: batched_transpose_lds_problem.hpp:28
static constexpr auto LDSVectorSize
Definition: batched_transpose_lds_problem.hpp:69
static constexpr auto kNPerBlock
Definition: batched_transpose_lds_problem.hpp:63
static constexpr index_t kQuadrantLeadDim
Definition: batched_transpose_lds_problem.hpp:34
static constexpr index_t kColWarps_
Definition: batched_transpose_lds_problem.hpp:22
static constexpr index_t kSecondSizePerBlock
Definition: batched_transpose_lds_problem.hpp:32
static constexpr index_t kLeadSizePerBlock
Definition: batched_transpose_lds_problem.hpp:31
static constexpr bool kPadN
Definition: batched_transpose_lds_problem.hpp:60
static constexpr index_t kSecondNumWarps
Definition: batched_transpose_lds_problem.hpp:29
static constexpr auto VectorSizeInput
Definition: batched_transpose_lds_problem.hpp:67
remove_cvref_t< DataType_ > DataType
Definition: batched_transpose_lds_problem.hpp:19
Definition: amd_transpose_load_encoding.hpp:14
Definition: integral_constant.hpp:13