CUTLASS: simd.h Source File

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simd.h
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1 /***************************************************************************************************
2 * Copyright (c) 2017-2019, NVIDIA CORPORATION. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification, are permitted
5 * provided that the following conditions are met:
6 * * Redistributions of source code must retain the above copyright notice, this list of
7 * conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above copyright notice, this list of
9 * conditions and the following disclaimer in the documentation and/or other materials
10 * provided with the distribution.
11 * * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
12 * to endorse or promote products derived from this software without specific prior written
13 * permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
19 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
21 * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 **************************************************************************************************/
29 #pragma once
30
31 #include "../array.h"
32 #include "../numeric_types.h"
33
34 namespace cutlass {
35 namespace arch {
36
38
39 //
40 // Element-wise operators
41 //
42
43 CUTLASS_HOST_DEVICE
44 template <typename T, int N>
45 Array<T, N> operator*(Array<T, N> const &a, Array<T, N> const &b) {
46 Array<T, N> d;
47 CUTLASS_PRAGMA_UNROLL
48 for (int i = 0; i < N; ++i) {
49 d[i] = a[i] * b[i];
50 }
51 return d;
52 }
53
54 CUTLASS_HOST_DEVICE
55 template <typename T, int N>
56 Array<T, N> operator+(Array<T, N> const &a, Array<T, N> const &b) {
57 Array<T, N> d;
58 CUTLASS_PRAGMA_UNROLL
59 for (int i = 0; i < N; ++i) {
60 d[i] = a[i] + b[i];
61 }
62 return d;
63 }
64
65 CUTLASS_HOST_DEVICE
66 template <typename T, int N>
67 Array<T, N> operator-(Array<T, N> const &a, Array<T, N> const &b) {
68 Array<T, N> d;
69 CUTLASS_PRAGMA_UNROLL
70 for (int i = 0; i < N; ++i) {
71 d[i] = a[i] - b[i];
72 }
73 return d;
74 }
75
77
78 //
79 // Multiply-accumulate operators
80 //
81
82 CUTLASS_HOST_DEVICE
83 template <typename T, int N>
84 Array<T, N> mac(Array<T, N> const &a, Array<T, N> const &b, Array<T, N> const &c) {
85 Array<T, N> d;
86 CUTLASS_PRAGMA_UNROLL
87 for (int i = 0; i < N; ++i) {
88 d[i] = a[i] * b[i] + c;
89 }
90 return d;
91 }
92
94
95 //
96 // Dot product operator
97 //
98
99 CUTLASS_HOST_DEVICE
100 template <typename Element, typename Accumulator, int N>
101 Accumulator dot(Array<T, N> const &a, Array<T, N> const &b, Accumulator accum) {
102 CUTLASS_PRAGMA_UNROLL
103 for (int i = 0; i < N; ++i) {
104 accum += a[i] * b[i];
105 }
106 return accum;
107 }
108
110
111 } // namespace arch
112 } // namespace cutlass
113
115
116 #include "simd_sm60.h"
117 #include "simd_sm61.h"
118
cutlass
Definition: aligned_buffer.h:35
simd_sm61.h
Templates exposing SIMD operators for SM60.
CUTLASS_PRAGMA_UNROLL
#define CUTLASS_PRAGMA_UNROLL
Definition: cutlass.h:110
cutlass::arch::operator-
CUTLASS_HOST_DEVICE Array< T, N > operator-(Array< T, N > const &a, Array< T, N > const &b)
Definition: simd.h:67
cutlass::arch::operator*
CUTLASS_HOST_DEVICE Array< T, N > operator*(Array< T, N > const &a, Array< T, N > const &b)
Definition: simd.h:45
cutlass::arch::dot
CUTLASS_HOST_DEVICE Accumulator dot(Array< T, N > const &a, Array< T, N > const &b, Accumulator accum)
Definition: simd.h:101
CUTLASS_HOST_DEVICE
#define CUTLASS_HOST_DEVICE
Definition: cutlass.h:89
cutlass::arch::operator+
CUTLASS_HOST_DEVICE Array< T, N > operator+(Array< T, N > const &a, Array< T, N > const &b)
Definition: simd.h:56
simd_sm60.h
Templates exposing SIMD operators for SM60.
cutlass::arch::mac
CUTLASS_HOST_DEVICE Array< T, N > mac(Array< T, N > const &a, Array< T, N > const &b, Array< T, N > const &c)
Definition: simd.h:84