forked from kokkos/kokkos
-
Notifications
You must be signed in to change notification settings - Fork 0
/
TestStdAlgorithmsExclusiveScan.cpp
401 lines (336 loc) · 13.4 KB
/
TestStdAlgorithmsExclusiveScan.cpp
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
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
//@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
#include <TestStdAlgorithmsCommon.hpp>
#include <utility>
#include <iomanip>
namespace Test {
namespace stdalgos {
namespace EScan {
namespace KE = Kokkos::Experimental;
template <class ValueType>
struct UnifDist;
template <>
struct UnifDist<double> {
using dist_type = std::uniform_real_distribution<double>;
std::mt19937 m_gen;
dist_type m_dist;
UnifDist() : m_dist(0.05, 1.2) { m_gen.seed(1034343); }
double operator()() { return m_dist(m_gen); }
};
template <>
struct UnifDist<int> {
using dist_type = std::uniform_int_distribution<int>;
std::mt19937 m_gen;
dist_type m_dist;
UnifDist() : m_dist(1, 3) { m_gen.seed(1034343); }
int operator()() { return m_dist(m_gen); }
};
template <>
struct UnifDist<CustomValueType> {
using dist_type = std::uniform_real_distribution<double>;
std::mt19937 m_gen;
dist_type m_dist;
UnifDist() : m_dist(0.05, 1.2) { m_gen.seed(1034343); }
CustomValueType operator()() { return m_dist(m_gen); }
};
template <class ViewType>
void fill_view(ViewType dest_view, const std::string& name) {
using value_type = typename ViewType::value_type;
using exe_space = typename ViewType::execution_space;
const std::size_t ext = dest_view.extent(0);
using aux_view_t = Kokkos::View<value_type*, exe_space>;
aux_view_t aux_view("aux_view", ext);
auto v_h = create_mirror_view(Kokkos::HostSpace(), aux_view);
UnifDist<value_type> randObj;
if (name == "empty") {
// no op
}
else if (name == "one-element") {
v_h(0) = static_cast<value_type>(1);
}
else if (name == "two-elements-a") {
v_h(0) = static_cast<value_type>(1);
v_h(1) = static_cast<value_type>(2);
}
else if (name == "two-elements-b") {
v_h(0) = static_cast<value_type>(2);
v_h(1) = static_cast<value_type>(-1);
}
else if (name == "small-a") {
for (std::size_t i = 0; i < ext; ++i) {
v_h(i) = static_cast<value_type>(i + 1);
}
}
else if (name == "small-b") {
for (std::size_t i = 0; i < ext; ++i) {
v_h(i) = randObj();
}
v_h(5) = static_cast<value_type>(-2);
}
else if (name == "medium" || name == "large") {
for (std::size_t i = 0; i < ext; ++i) {
v_h(i) = randObj();
}
}
else {
throw std::runtime_error("invalid choice");
}
Kokkos::deep_copy(aux_view, v_h);
CopyFunctor<aux_view_t, ViewType> F1(aux_view, dest_view);
Kokkos::parallel_for("copy", dest_view.extent(0), F1);
}
// I had to write my own because std::exclusive_scan is ONLY found with
// std=c++17
template <class it1, class it2, class ValType, class BopType>
void my_host_exclusive_scan(it1 first, it1 last, it2 dest, ValType init,
BopType bop) {
const auto num_elements = last - first;
if (num_elements > 0) {
while (first < last - 1) {
*(dest++) = init;
init = bop(*first++, init);
}
*dest = init;
}
}
template <class ValueType>
struct MultiplyFunctor {
KOKKOS_INLINE_FUNCTION
ValueType operator()(const ValueType& a, const ValueType& b) const {
return (a * b);
}
};
template <class ValueType>
struct SumFunctor {
KOKKOS_INLINE_FUNCTION
ValueType operator()(const ValueType& a, const ValueType& b) const {
return (a + b);
}
};
struct VerifyData {
template <class ViewType1, class ViewType2, class ValueType, class BinaryOp>
void operator()(ViewType1 data_view, // contains data
ViewType2 test_view, // the view to test
ValueType init_value, BinaryOp bop) {
//! always careful because views might not be deep copyable
auto data_view_dc = create_deep_copyable_compatible_clone(data_view);
auto data_view_h =
create_mirror_view_and_copy(Kokkos::HostSpace(), data_view_dc);
using gold_view_value_type = typename ViewType2::value_type;
Kokkos::View<gold_view_value_type*, Kokkos::HostSpace> gold_h(
"goldh", data_view.extent(0));
my_host_exclusive_scan(KE::cbegin(data_view_h), KE::cend(data_view_h),
KE::begin(gold_h), init_value, bop);
auto test_view_dc = create_deep_copyable_compatible_clone(test_view);
auto test_view_h =
create_mirror_view_and_copy(Kokkos::HostSpace(), test_view_dc);
if (test_view_h.extent(0) > 0) {
for (std::size_t i = 0; i < test_view_h.extent(0); ++i) {
if (std::is_same<gold_view_value_type, int>::value) {
ASSERT_EQ(gold_h(i), test_view_h(i));
} else {
const auto error =
std::abs(static_cast<double>(gold_h(i) - test_view_h(i)));
ASSERT_LT(error, 1e-10) << i << " " << std::setprecision(15) << error
<< static_cast<double>(test_view_h(i)) << " "
<< static_cast<double>(gold_h(i));
}
}
}
}
template <class ViewType1, class ViewType2, class ValueType>
void operator()(ViewType1 data_view, // contains data
ViewType2 test_view, // the view to test
ValueType init_value) {
(*this)(data_view, test_view, init_value, SumFunctor<ValueType>());
}
};
std::string value_type_to_string(int) { return "int"; }
std::string value_type_to_string(double) { return "double"; }
template <class Tag, class ValueType, class InfoType, class... OpOrEmpty>
void run_single_scenario(const InfoType& scenario_info, ValueType init_value,
OpOrEmpty... empty_or_op) {
const auto name = std::get<0>(scenario_info);
const std::size_t view_ext = std::get<1>(scenario_info);
auto view_dest = create_view<ValueType>(Tag{}, view_ext, "exclusive_scan");
auto view_from = create_view<ValueType>(Tag{}, view_ext, "exclusive_scan");
fill_view(view_from, name);
// view_dest is filled with zeros before calling the algorithm everytime to
// ensure the algorithm does something meaningful
{
fill_zero(view_dest);
auto r = KE::exclusive_scan(exespace(), KE::cbegin(view_from),
KE::cend(view_from), KE::begin(view_dest),
init_value, empty_or_op...);
ASSERT_EQ(r, KE::end(view_dest));
VerifyData()(view_from, view_dest, init_value, empty_or_op...);
}
{
fill_zero(view_dest);
auto r = KE::exclusive_scan("label", exespace(), KE::cbegin(view_from),
KE::cend(view_from), KE::begin(view_dest),
init_value, empty_or_op...);
ASSERT_EQ(r, KE::end(view_dest));
VerifyData()(view_from, view_dest, init_value, empty_or_op...);
}
{
fill_zero(view_dest);
auto r = KE::exclusive_scan(exespace(), view_from, view_dest, init_value,
empty_or_op...);
ASSERT_EQ(r, KE::end(view_dest));
VerifyData()(view_from, view_dest, init_value, empty_or_op...);
}
{
fill_zero(view_dest);
auto r = KE::exclusive_scan("label", exespace(), view_from, view_dest,
init_value, empty_or_op...);
ASSERT_EQ(r, KE::end(view_dest));
VerifyData()(view_from, view_dest, init_value, empty_or_op...);
}
Kokkos::fence();
}
template <class Tag, class ValueType, class InfoType, class... OpOrEmpty>
void run_single_scenario_inplace(const InfoType& scenario_info,
ValueType init_value,
OpOrEmpty... empty_or_op) {
const auto name = std::get<0>(scenario_info);
const std::size_t view_ext = std::get<1>(scenario_info);
// since here we call the in-place operation, we need to use two views:
// view1: filled according to what the scenario asks for and is not modified
// view2: filled according to what the scenario asks for and used for the
// in-place op Therefore, after the op is done, view2 should contain the
// result of doing exclusive scan NOTE: view2 is filled below every time
// because the algorithm acts in place
auto view1 =
create_view<ValueType>(Tag{}, view_ext, "exclusive_scan_inplace_view1");
fill_view(view1, name);
auto view2 =
create_view<ValueType>(Tag{}, view_ext, "exclusive_scan_inplace_view2");
{
fill_view(view2, name);
auto r = KE::exclusive_scan(exespace(), KE::cbegin(view2), KE::cend(view2),
KE::begin(view2), init_value, empty_or_op...);
ASSERT_EQ(r, KE::end(view2));
VerifyData()(view1, view2, init_value, empty_or_op...);
}
{
fill_view(view2, name);
auto r = KE::exclusive_scan("label", exespace(), KE::cbegin(view2),
KE::cend(view2), KE::begin(view2), init_value,
empty_or_op...);
ASSERT_EQ(r, KE::end(view2));
VerifyData()(view1, view2, init_value, empty_or_op...);
}
{
fill_view(view2, name);
auto r = KE::exclusive_scan(exespace(), view2, view2, init_value,
empty_or_op...);
ASSERT_EQ(r, KE::end(view2));
VerifyData()(view1, view2, init_value, empty_or_op...);
}
{
fill_view(view2, name);
auto r = KE::exclusive_scan("label", exespace(), view2, view2, init_value,
empty_or_op...);
ASSERT_EQ(r, KE::end(view2));
VerifyData()(view1, view2, init_value, empty_or_op...);
}
Kokkos::fence();
}
template <class Tag, class ValueType>
void run_exclusive_scan_all_scenarios() {
const std::map<std::string, std::size_t> scenarios = {
{"empty", 0}, {"one-element", 1}, {"two-elements-a", 2},
{"two-elements-b", 2}, {"small-a", 9}, {"small-b", 13},
{"medium", 1103}, {"large", 10513}};
for (const auto& it : scenarios) {
run_single_scenario<Tag, ValueType>(it, ValueType{0});
run_single_scenario<Tag, ValueType>(it, ValueType{1});
run_single_scenario<Tag, ValueType>(it, ValueType{-2});
run_single_scenario<Tag, ValueType>(it, ValueType{3});
run_single_scenario_inplace<Tag, ValueType>(it, ValueType{0});
run_single_scenario_inplace<Tag, ValueType>(it, ValueType{-2});
#if !defined KOKKOS_ENABLE_OPENMPTARGET
// custom multiply op is only run for small views otherwise it overflows
if (it.first == "small-a" || it.first == "small-b") {
using custom_bop_t = MultiplyFunctor<ValueType>;
run_single_scenario<Tag, ValueType>(it, ValueType{0}, custom_bop_t());
run_single_scenario<Tag, ValueType>(it, ValueType{1}, custom_bop_t());
run_single_scenario<Tag, ValueType>(it, ValueType{-2}, custom_bop_t());
run_single_scenario<Tag, ValueType>(it, ValueType{3}, custom_bop_t());
run_single_scenario_inplace<Tag, ValueType>(it, ValueType{0},
custom_bop_t());
run_single_scenario_inplace<Tag, ValueType>(it, ValueType{-2},
custom_bop_t());
}
using custom_bop_t = SumFunctor<ValueType>;
run_single_scenario<Tag, ValueType>(it, ValueType{0}, custom_bop_t());
run_single_scenario<Tag, ValueType>(it, ValueType{1}, custom_bop_t());
run_single_scenario<Tag, ValueType>(it, ValueType{-2}, custom_bop_t());
run_single_scenario<Tag, ValueType>(it, ValueType{3}, custom_bop_t());
run_single_scenario_inplace<Tag, ValueType>(it, ValueType{0},
custom_bop_t());
run_single_scenario_inplace<Tag, ValueType>(it, ValueType{-2},
custom_bop_t());
#endif
}
}
TEST(std_algorithms_numeric_ops_test, exclusive_scan) {
run_exclusive_scan_all_scenarios<DynamicTag, double>();
run_exclusive_scan_all_scenarios<StridedThreeTag, double>();
run_exclusive_scan_all_scenarios<DynamicTag, int>();
run_exclusive_scan_all_scenarios<StridedThreeTag, int>();
run_exclusive_scan_all_scenarios<DynamicTag, CustomValueType>();
run_exclusive_scan_all_scenarios<StridedThreeTag, CustomValueType>();
}
TEST(std_algorithms_numeric_ops_test, exclusive_scan_functor) {
int dummy = 0;
using view_type = Kokkos::View<int*, exespace>;
view_type dummy_view("dummy_view", 0);
using functor_type =
Kokkos::Experimental::Impl::ExclusiveScanDefaultFunctorWithValueWrapper<
exespace, int, int, view_type, view_type>;
functor_type functor(dummy, dummy_view, dummy_view);
using value_type = functor_type::value_type;
value_type value1;
functor.init(value1);
ASSERT_EQ(value1.val, 0);
ASSERT_EQ(value1.is_initial, true);
value_type value2;
value2.val = 1;
value2.is_initial = false;
functor.join(value1, value2);
ASSERT_EQ(value1.val, 1);
ASSERT_EQ(value1.is_initial, false);
functor.init(value1);
functor.join(value2, value1);
ASSERT_EQ(value2.val, 1);
ASSERT_EQ(value2.is_initial, false);
functor.init(value2);
functor.join(value2, value1);
ASSERT_EQ(value2.val, 0);
ASSERT_EQ(value2.is_initial, true);
value1.val = 1;
value1.is_initial = false;
value2.val = 2;
value2.is_initial = false;
functor.join(value2, value1);
ASSERT_EQ(value2.val, 3);
ASSERT_EQ(value2.is_initial, false);
}
} // namespace EScan
} // namespace stdalgos
} // namespace Test