CUTLASS: wmma_sm75.h Source File

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wmma_sm75.h
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1 /***************************************************************************************************
2 * Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
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24 **************************************************************************************************/
29 #pragma once
30
31 #include <assert.h>
32 #include "cutlass/layout/matrix.h"
33
35 namespace cutlass {
36 namespace arch {
37
39 //
40 // WMMA template structure defines nvcuda::wmma::fragments and static assert for
41 // wmma native instruction sizes supported for cutlass::int4b_t (experimental::s4).
42 //
44 template <
45 typename Shape_,
46 typename LayoutA_,
47 typename LayoutB_,
48 typename LayoutC_>
49 struct Wmma<
50 Shape_,
51 cutlass::int4b_t,
52 LayoutA_,
53 cutlass::int4b_t,
54 LayoutB_,
55 int32_t,
56 LayoutC_,
57 cutlass::arch::OpMultiplyAdd
58 > {
59 #if defined(CUTLASS_ARCH_WMMA_SM75_ENABLED)
60 using Shape = Shape_;
61 using ElementA = cutlass::int4b_t;
62 using LayoutA = LayoutA_;
63 using ElementB = cutlass::int4b_t;
64 using LayoutB = LayoutB_;
65 using ElementC = int32_t;
66 using LayoutC = LayoutC_;
67 using Operator = cutlass::arch::OpMultiplyAdd;
68
69 // check supported wmma shape for the given multiplicand data types
70 static_assert(
71 platform::is_same<cutlass::gemm::GemmShape<8, 8, 32>, Shape>::value,
72 "Supported list of wmma operator shape for s8 multiplicands is: 8x8x32");
73
74
75 // Wmma Fragment
76 using FragmentA = nvcuda::wmma::fragment<
77 nvcuda::wmma::matrix_a,
78 Shape::kM,
79 Shape::kN,
80 Shape::kK,
81 typename CutlassToWmmaDataType<ElementA>::Type,
82 typename CutlassToWmmaLayout<LayoutA>::Layout>;
83
84 using FragmentB = nvcuda::wmma::fragment<
85 nvcuda::wmma::matrix_b,
86 Shape::kM,
87 Shape::kN,
88 Shape::kK,
89 typename CutlassToWmmaDataType<ElementB>::Type,
90 typename CutlassToWmmaLayout<LayoutB>::Layout>;
91
92 using FragmentC = nvcuda::wmma::fragment<
93 nvcuda::wmma::accumulator,
94 Shape::kM,
95 Shape::kN,
96 Shape::kK,
97 typename CutlassToWmmaDataType<ElementC>::Type>;
98
100 CUTLASS_DEVICE
101 void operator()(
102 FragmentC &D,
103 FragmentA const &A,
104 FragmentB const &B,
105 FragmentC const &C) const {
106 nvcuda::wmma::mma_sync(D, A, B, C);
107 }
108
109 #else
110 static_assert(false, "wmma.mma.sync interger type multiplicands is avialable only for SM75 and beyond");
111 #endif
112
113 };
114
116 //
117 // WMMA template structure defines nvcuda::wmma::fragments and static assert for
118 // wmma native instruction sizes supported for cutlass::uint1b_t (experimental::b1)
119 // (nvcuda::wmma targeting SASS instruction BMMA)
120 //
122 template <
123 typename Shape_,
124 typename LayoutA_,
125 typename LayoutB_,
126 typename LayoutC_>
127 struct Wmma<
128 Shape_,
129 cutlass::uint1b_t,
130 LayoutA_,
131 cutlass::uint1b_t,
132 LayoutB_,
133 int32_t,
134 LayoutC_,
135 cutlass::arch::OpXorPopc
136 > {
137 #if defined(CUTLASS_ARCH_WMMA_SM75_ENABLED)
138 using Shape = Shape_;
139 using ElementA = cutlass::uint1b_t;
140 using LayoutA = LayoutA_;
141 using ElementB = cutlass::uint1b_t;
142 using LayoutB = LayoutB_;
143 using ElementC = int32_t;
144 using LayoutC = LayoutC_;
145 using Operator = cutlass::arch::OpXorPopc;
146
147 // check supported wmma shape for the given multiplicand data types
148 static_assert(
149 platform::is_same<cutlass::gemm::GemmShape<8, 8, 128>, Shape>::value,
150 "Supported list of wmma operator shape for b1 multiplicands is: 8x8x128");
151
152
153 // Wmma Fragment
154 using FragmentA = nvcuda::wmma::fragment<
155 nvcuda::wmma::matrix_a,
156 Shape::kM,
157 Shape::kN,
158 Shape::kK,
159 typename CutlassToWmmaDataType<ElementA>::Type,
160 typename CutlassToWmmaLayout<LayoutA>::Layout>;
161
162 using FragmentB = nvcuda::wmma::fragment<
163 nvcuda::wmma::matrix_b,
164 Shape::kM,
165 Shape::kN,
166 Shape::kK,
167 typename CutlassToWmmaDataType<ElementB>::Type,
168 typename CutlassToWmmaLayout<LayoutB>::Layout>;
169
170 using FragmentC = nvcuda::wmma::fragment<
171 nvcuda::wmma::accumulator,
172 Shape::kM,
173 Shape::kN,
174 Shape::kK,
175 typename CutlassToWmmaDataType<ElementC>::Type>;
176
178 CUTLASS_DEVICE
179 void operator()(
180 FragmentC &D,
181 FragmentA const &A,
182 FragmentB const &B,
183 FragmentC const &C) const {
184
185 nvcuda::wmma::bmma_sync(D, A, B, C, nvcuda::wmma::experimental::bmmaBitOpXOR,
186 nvcuda::wmma::experimental::bmmaAccumulateOpPOPC);
187 }
188
189 #else
190 static_assert(false, "wmma.mma.sync interger type multiplicands is avialable only for SM75 and beyond");
191 #endif
192
193 };
194
195 } // namespace arch
196 } // namespace cutlass
cutlass
Definition: aligned_buffer.h:35
cutlass::platform::is_same
std::is_same (false specialization)
Definition: platform.h:394
cutlass::uint1b_t
integer_subbyte< 1, false > uint1b_t
1-bit Unsigned integer type
Definition: integer_subbyte.h:152
cutlass::integer_subbyte
4-bit signed integer type
Definition: integer_subbyte.h:42
cutlass::gemm::GemmShape
Shape of a matrix multiply-add operation.
Definition: include/cutlass/gemm/gemm.h:57
static_assert
#define static_assert(__e, __m)
Definition: platform.h:153
matrix.h
Defines layout functions used by TensorRef and derived classes.
cutlass::int4b_t
integer_subbyte< 4, true > int4b_t
4-bit Integer type
Definition: integer_subbyte.h:155