forked from kokkos/kokkos
-
Notifications
You must be signed in to change notification settings - Fork 0
/
TestStdAlgorithmsTeamTransformExclusiveScan.cpp
245 lines (209 loc) · 9.02 KB
/
TestStdAlgorithmsTeamTransformExclusiveScan.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
//@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>
#if not defined KOKKOS_ENABLE_OPENMPTARGET
namespace Test {
namespace stdalgos {
namespace TeamTransformExclusiveScan {
namespace KE = Kokkos::Experimental;
template <class ValueType>
struct PlusFunctor {
KOKKOS_INLINE_FUNCTION
ValueType operator()(const ValueType& lhs, const ValueType& rhs) const {
return lhs + rhs;
}
};
template <class ValueType>
struct MultipliesByTwoFunctor {
KOKKOS_INLINE_FUNCTION
ValueType operator()(const ValueType& value) const { return value * 2; }
};
template <class SourceViewType, class DestViewType, class DistancesViewType,
class IntraTeamSentinelView, class InitValuesViewType,
class BinaryOpType, class UnaryOpType>
struct TestFunctorA {
SourceViewType m_sourceView;
DestViewType m_destView;
DistancesViewType m_distancesView;
IntraTeamSentinelView m_intraTeamSentinelView;
InitValuesViewType m_initValuesView;
BinaryOpType m_binaryOp;
UnaryOpType m_unaryOp;
int m_apiPick;
TestFunctorA(const SourceViewType sourceView, const DestViewType destView,
const DistancesViewType distancesView,
const IntraTeamSentinelView intraTeamSentinelView,
const InitValuesViewType initValuesView, BinaryOpType binaryOp,
UnaryOpType unaryOp, int apiPick)
: m_sourceView(sourceView),
m_destView(destView),
m_distancesView(distancesView),
m_intraTeamSentinelView(intraTeamSentinelView),
m_initValuesView(initValuesView),
m_binaryOp(binaryOp),
m_unaryOp(unaryOp),
m_apiPick(apiPick) {}
template <class MemberType>
KOKKOS_INLINE_FUNCTION void operator()(const MemberType& member) const {
const auto rowIndex = member.league_rank();
auto rowViewSrc = Kokkos::subview(m_sourceView, rowIndex, Kokkos::ALL());
auto rowViewDest = Kokkos::subview(m_destView, rowIndex, Kokkos::ALL());
const auto initVal = m_initValuesView(rowIndex);
ptrdiff_t resultDist = 0;
switch (m_apiPick) {
case 0: {
auto it = KE::transform_exclusive_scan(
member, KE::cbegin(rowViewSrc), KE::cend(rowViewSrc),
KE::begin(rowViewDest), initVal, m_binaryOp, m_unaryOp);
resultDist = KE::distance(KE::begin(rowViewDest), it);
Kokkos::single(Kokkos::PerTeam(member),
[=, *this] { m_distancesView(rowIndex) = resultDist; });
break;
}
case 1: {
auto it = KE::transform_exclusive_scan(member, rowViewSrc, rowViewDest,
initVal, m_binaryOp, m_unaryOp);
resultDist = KE::distance(KE::begin(rowViewDest), it);
Kokkos::single(Kokkos::PerTeam(member),
[=, *this] { m_distancesView(rowIndex) = resultDist; });
break;
}
}
// store result of checking if all members have their local
// values matching the one stored in m_distancesView
member.team_barrier();
const bool intraTeamCheck = team_members_have_matching_result(
member, resultDist, m_distancesView(rowIndex));
Kokkos::single(Kokkos::PerTeam(member), [=, *this]() {
m_intraTeamSentinelView(rowIndex) = intraTeamCheck;
});
}
};
struct InPlace {};
template <class LayoutTag, class ValueType, class InPlaceOrVoid = void>
void test_A(std::size_t numTeams, std::size_t numCols, int apiId) {
/* description:
use a rank-2 view randomly filled with values,
and run a team-level transform_exclusive_scan
*/
// -----------------------------------------------
// prepare data
// -----------------------------------------------
// create a view in the memory space associated with default exespace
// with as many rows as the number of teams and fill it with random
// values from an arbitrary range.
constexpr ValueType lowerBound = 5;
constexpr ValueType upperBound = 523;
const auto bounds = make_bounds(lowerBound, upperBound);
auto [sourceView, sourceViewBeforeOp_h] = create_random_view_and_host_clone(
LayoutTag{}, numTeams, numCols, bounds, "sourceView");
// -----------------------------------------------
// launch kokkos kernel
// -----------------------------------------------
using space_t = Kokkos::DefaultExecutionSpace;
Kokkos::TeamPolicy<space_t> policy(numTeams, Kokkos::AUTO());
// tranform_exclusive_scan returns an iterator so to verify that it is correct
// each team stores the distance of the returned iterator from the beginning
// of the interval that team operates on and then we check that these
// distances match the std result
Kokkos::View<std::size_t*> distancesView("distancesView", numTeams);
// sentinel to check if all members of the team compute the same result
Kokkos::View<bool*> intraTeamSentinelView("intraTeamSameResult", numTeams);
PlusFunctor<ValueType> binaryOp;
MultipliesByTwoFunctor<ValueType> unaryOp;
// Create view of reduce init values to be used by test cases
Kokkos::View<ValueType*, Kokkos::DefaultHostExecutionSpace> initValuesView_h(
"initValuesView_h", numTeams);
using rand_pool =
Kokkos::Random_XorShift64_Pool<Kokkos::DefaultHostExecutionSpace>;
rand_pool pool(lowerBound * upperBound);
Kokkos::fill_random(initValuesView_h, pool, lowerBound, upperBound);
auto initValuesView =
Kokkos::create_mirror_view_and_copy(space_t(), initValuesView_h);
// create the destination view
Kokkos::View<ValueType**> destView("destView", numTeams, numCols);
if constexpr (std::is_same_v<InPlaceOrVoid, InPlace>) {
TestFunctorA fnc(sourceView, sourceView, distancesView,
intraTeamSentinelView, initValuesView, binaryOp, unaryOp,
apiId);
Kokkos::parallel_for(policy, fnc);
} else {
TestFunctorA fnc(sourceView, destView, distancesView, intraTeamSentinelView,
initValuesView, binaryOp, unaryOp, apiId);
Kokkos::parallel_for(policy, fnc);
}
// -----------------------------------------------
// run cpp-std kernel and check
// -----------------------------------------------
auto distancesView_h = create_host_space_copy(distancesView);
auto intraTeamSentinelView_h = create_host_space_copy(intraTeamSentinelView);
Kokkos::View<ValueType**, Kokkos::HostSpace> stdDestView("stdDestView",
numTeams, numCols);
for (std::size_t i = 0; i < sourceView.extent(0); ++i) {
auto rowFrom = Kokkos::subview(sourceViewBeforeOp_h, i, Kokkos::ALL());
auto rowDest = Kokkos::subview(stdDestView, i, Kokkos::ALL());
auto initValue = initValuesView_h(i);
ASSERT_TRUE(intraTeamSentinelView_h(i));
// libstdc++ as provided by GCC 8 does not have transform_exclusive_scan and
// for GCC 9.1, 9.2 fails to compile for missing overload not accepting policy
#if defined(_GLIBCXX_RELEASE) && (_GLIBCXX_RELEASE <= 9)
#define transform_exclusive_scan testing_transform_exclusive_scan
#else
#define transform_exclusive_scan std::transform_exclusive_scan
#endif
switch (apiId) {
case 0:
case 1: {
auto it = transform_exclusive_scan(
KE::cbegin(rowFrom), KE::cend(rowFrom), KE::begin(rowDest),
initValue, binaryOp, unaryOp);
const std::size_t stdDistance = KE::distance(KE::begin(rowDest), it);
ASSERT_EQ(stdDistance, distancesView_h(i));
break;
}
}
#undef transform_exclusive_scan
}
if constexpr (std::is_same_v<InPlaceOrVoid, InPlace>) {
auto dataViewAfterOp_h = create_host_space_copy(sourceView);
expect_equal_host_views(stdDestView, dataViewAfterOp_h);
} else {
auto dataViewAfterOp_h = create_host_space_copy(destView);
expect_equal_host_views(stdDestView, dataViewAfterOp_h);
}
}
template <class LayoutTag, class ValueType, class InPlaceOrVoid = void>
void run_all_scenarios() {
for (int numTeams : teamSizesToTest) {
for (const auto& numCols : {0, 1, 2, 13, 101, 1444, 8153}) {
for (int apiId : {0, 1}) {
test_A<LayoutTag, ValueType, InPlaceOrVoid>(numTeams, numCols, apiId);
}
}
}
}
TEST(std_algorithms_transform_exclusive_scan_team_test, test) {
run_all_scenarios<DynamicTag, double>();
run_all_scenarios<StridedTwoRowsTag, int>();
run_all_scenarios<StridedThreeRowsTag, unsigned>();
run_all_scenarios<DynamicTag, double, InPlace>();
run_all_scenarios<StridedTwoRowsTag, int, InPlace>();
run_all_scenarios<StridedThreeRowsTag, unsigned, InPlace>();
}
} // namespace TeamTransformExclusiveScan
} // namespace stdalgos
} // namespace Test
#endif