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
|
//@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
// @Kokkos_Feature_Level_Required:13
// Unit test for hierarchical parallelism
// Create concurrent work hierarchically and verify if
// sum of created processing units corresponds to expected value
#include <gtest/gtest.h>
#include <Kokkos_Core.hpp>
// Degrees of concurrency per nesting level
using SCALAR_TYPE = int;
namespace Test {
template <class ExecSpace>
struct Hierarchical_Red_A {
void run(const int pN, const int sX) {
using team_policy = Kokkos::TeamPolicy<ExecSpace>;
using member_type = typename Kokkos::TeamPolicy<ExecSpace>::member_type;
using viewDataType = Kokkos::View<SCALAR_TYPE *, ExecSpace>;
viewDataType v("Vector", pN);
Kokkos::parallel_for(
"Team", team_policy(pN, Kokkos::AUTO),
KOKKOS_LAMBDA(const member_type &team) {
const int n = team.league_rank();
SCALAR_TYPE out = 0;
Kokkos::parallel_reduce(
Kokkos::TeamThreadRange(team, sX),
[=](const int i, SCALAR_TYPE &tmp) {
tmp += n * v.extent(0) + i;
},
out);
Kokkos::single(Kokkos::PerTeam(team), [&]() { v(n) += out; });
});
Kokkos::fence();
auto v_H = Kokkos::create_mirror_view_and_copy(Kokkos::HostSpace(), v);
SCALAR_TYPE check = 0;
SCALAR_TYPE ref = 0;
for (int i = 0; i < pN; ++i) {
check += v_H(i);
ref +=
(sX + i * pN) * (sX + i * pN - 1) / 2 - ((i * pN) * (i * pN - 1) / 2);
}
ASSERT_EQ(check, ref);
}
};
TEST(TEST_CATEGORY, IncrTest_13a_Hierarchical_Red) {
Hierarchical_Red_A<TEST_EXECSPACE> test;
test.run(4, 16);
test.run(2, 39);
test.run(39, 3);
}
} // namespace Test
|
