1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
|
//@HEADER
// ************************************************************************
//
// Kokkos v. 4.0
// Copyright (2022) National Technology & Engineering
// Solutions of Sandia, LLC (NTESS).
//
// Under the terms of Contract DE-NA0003525 with NTESS,
// the U.S. Government retains certain rights in this software.
//
// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
// See https://kokkos.org/LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//@HEADER
#ifndef KOKKOS_TEST_DYNRANKVIEW_HPP
#define KOKKOS_TEST_DYNRANKVIEW_HPP
#include <Kokkos_Core.hpp>
#include <Kokkos_DynRankView.hpp>
#include <vector>
#include <Kokkos_Timer.hpp>
// Compare performance of DynRankView to View, specific focus on the parenthesis
// operators
namespace Performance {
// View functor
template <typename DeviceType>
struct InitViewFunctor {
using inviewtype = Kokkos::View<double ***, DeviceType>;
inviewtype _inview;
InitViewFunctor(inviewtype &inview_) : _inview(inview_) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int i) const {
for (unsigned j = 0; j < _inview.extent(1); ++j) {
for (unsigned k = 0; k < _inview.extent(2); ++k) {
_inview(i, j, k) = double(i) / 2 - j * j + double(k) / 3;
}
}
}
struct SumComputationTest {
using inviewtype = Kokkos::View<double ***, DeviceType>;
inviewtype _inview;
using outviewtype = Kokkos::View<double *, DeviceType>;
outviewtype _outview;
KOKKOS_INLINE_FUNCTION
SumComputationTest(inviewtype &inview_, outviewtype &outview_)
: _inview(inview_), _outview(outview_) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int i) const {
for (unsigned j = 0; j < _inview.extent(1); ++j) {
for (unsigned k = 0; k < _inview.extent(2); ++k) {
_outview(i) += _inview(i, j, k);
}
}
}
};
};
template <typename DeviceType>
struct InitStrideViewFunctor {
using inviewtype = Kokkos::View<double ***, Kokkos::LayoutStride, DeviceType>;
inviewtype _inview;
InitStrideViewFunctor(inviewtype &inview_) : _inview(inview_) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int i) const {
for (unsigned j = 0; j < _inview.extent(1); ++j) {
for (unsigned k = 0; k < _inview.extent(2); ++k) {
_inview(i, j, k) = double(i) / 2 - j * j + double(k) / 3;
}
}
}
};
template <typename DeviceType>
struct InitViewRank7Functor {
using inviewtype = Kokkos::View<double *******, DeviceType>;
inviewtype _inview;
InitViewRank7Functor(inviewtype &inview_) : _inview(inview_) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int i) const {
for (unsigned j = 0; j < _inview.extent(1); ++j) {
for (unsigned k = 0; k < _inview.extent(2); ++k) {
_inview(i, j, k, 0, 0, 0, 0) = double(i) / 2 - j * j + double(k) / 3;
}
}
}
};
// DynRankView functor
template <typename DeviceType>
struct InitDynRankViewFunctor {
using inviewtype = Kokkos::DynRankView<double, DeviceType>;
inviewtype _inview;
InitDynRankViewFunctor(inviewtype &inview_) : _inview(inview_) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int i) const {
for (unsigned j = 0; j < _inview.extent(1); ++j) {
for (unsigned k = 0; k < _inview.extent(2); ++k) {
_inview(i, j, k) = double(i) / 2 - j * j + double(k) / 3;
}
}
}
struct SumComputationTest {
using inviewtype = Kokkos::DynRankView<double, DeviceType>;
inviewtype _inview;
using outviewtype = Kokkos::DynRankView<double, DeviceType>;
outviewtype _outview;
KOKKOS_INLINE_FUNCTION
SumComputationTest(inviewtype &inview_, outviewtype &outview_)
: _inview(inview_), _outview(outview_) {}
KOKKOS_INLINE_FUNCTION
void operator()(const int i) const {
for (unsigned j = 0; j < _inview.extent(1); ++j) {
for (unsigned k = 0; k < _inview.extent(2); ++k) {
_outview(i) += _inview(i, j, k);
}
}
}
};
};
template <typename DeviceType>
void test_dynrankview_op_perf(const int par_size) {
using execution_space = DeviceType;
using size_type = typename execution_space::size_type;
const size_type dim_2 = 90;
const size_type dim_3 = 30;
double elapsed_time_view = 0;
double elapsed_time_compview = 0;
double elapsed_time_strideview = 0;
double elapsed_time_view_rank7 = 0;
double elapsed_time_drview = 0;
double elapsed_time_compdrview = 0;
Kokkos::Timer timer;
{
Kokkos::View<double ***, DeviceType> testview("testview", par_size, dim_2,
dim_3);
using FunctorType = InitViewFunctor<DeviceType>;
timer.reset();
Kokkos::RangePolicy<DeviceType> policy(0, par_size);
Kokkos::parallel_for(policy, FunctorType(testview));
DeviceType().fence();
elapsed_time_view = timer.seconds();
std::cout << " View time (init only): " << elapsed_time_view << std::endl;
timer.reset();
Kokkos::View<double *, DeviceType> sumview("sumview", par_size);
Kokkos::parallel_for(
policy, typename FunctorType::SumComputationTest(testview, sumview));
DeviceType().fence();
elapsed_time_compview = timer.seconds();
std::cout << " View sum computation time: " << elapsed_time_view
<< std::endl;
Kokkos::View<double ***, Kokkos::LayoutStride, DeviceType> teststrideview =
Kokkos::subview(testview, Kokkos::ALL, Kokkos::ALL, Kokkos::ALL);
using FunctorStrideType = InitStrideViewFunctor<DeviceType>;
timer.reset();
Kokkos::parallel_for(policy, FunctorStrideType(teststrideview));
DeviceType().fence();
elapsed_time_strideview = timer.seconds();
std::cout << " Strided View time (init only): " << elapsed_time_strideview
<< std::endl;
}
{
Kokkos::View<double *******, DeviceType> testview("testview", par_size,
dim_2, dim_3, 1, 1, 1, 1);
using FunctorType = InitViewRank7Functor<DeviceType>;
timer.reset();
Kokkos::RangePolicy<DeviceType> policy(0, par_size);
Kokkos::parallel_for(policy, FunctorType(testview));
DeviceType().fence();
elapsed_time_view_rank7 = timer.seconds();
std::cout << " View Rank7 time (init only): " << elapsed_time_view_rank7
<< std::endl;
}
{
Kokkos::DynRankView<double, DeviceType> testdrview("testdrview", par_size,
dim_2, dim_3);
using FunctorType = InitDynRankViewFunctor<DeviceType>;
timer.reset();
Kokkos::RangePolicy<DeviceType> policy(0, par_size);
Kokkos::parallel_for(policy, FunctorType(testdrview));
DeviceType().fence();
elapsed_time_drview = timer.seconds();
std::cout << " DynRankView time (init only): " << elapsed_time_drview
<< std::endl;
timer.reset();
Kokkos::DynRankView<double, DeviceType> sumview("sumview", par_size);
Kokkos::parallel_for(
policy, typename FunctorType::SumComputationTest(testdrview, sumview));
DeviceType().fence();
elapsed_time_compdrview = timer.seconds();
std::cout << " DynRankView sum computation time: "
<< elapsed_time_compdrview << std::endl;
}
std::cout << " Ratio of View to DynRankView time: "
<< elapsed_time_view / elapsed_time_drview
<< std::endl; // expect < 1
std::cout << " Ratio of View to DynRankView sum computation time: "
<< elapsed_time_compview / elapsed_time_compdrview
<< std::endl; // expect < 1
std::cout << " Ratio of View to View Rank7 time: "
<< elapsed_time_view / elapsed_time_view_rank7
<< std::endl; // expect < 1
std::cout << " Ratio of StrideView to DynRankView time: "
<< elapsed_time_strideview / elapsed_time_drview
<< std::endl; // expect < 1
std::cout << " Ratio of DynRankView to View Rank7 time: "
<< elapsed_time_drview / elapsed_time_view_rank7
<< std::endl; // expect ?
timer.reset();
} // end test_dynrankview
} // namespace Performance
#endif
|
