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
|
// RUN: %libomp-compile && env OMP_NUM_THREADS=2,2,2,2,2 OMP_THREAD_LIMIT=16 \
// RUN: %libomp-run
#include <stdio.h>
#include "omp_testsuite.h"
// When compiler supports num_threads clause list format and strict modifier,
// remove the following and use num_threads clause directly
#if defined(__cplusplus)
extern "C" {
#endif
int __kmpc_global_thread_num(void *loc);
void __kmpc_push_num_threads_list(void *loc, int gtid, unsigned length,
int *list);
void __kmpc_push_num_threads_strict(void *loc, int gtid, int nth, int sev,
const char *msg);
void __kmpc_push_num_threads_list_strict(void *loc, int gtid, unsigned length,
int *list, int sev, const char *msg);
#if defined(__cplusplus)
}
#endif
int test_omp_parallel_num_threads_strict() {
int num_failed = 0;
// Test regular runtime warning about exceeding thread limit.
// Tolerate whatever value was given.
#pragma omp parallel reduction(+ : num_failed) num_threads(22)
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() <= 22);
// Test with 4 threads and strict -- no problem, no warning.
__kmpc_push_num_threads_strict(NULL, __kmpc_global_thread_num(NULL), 4, 1,
"This warning shouldn't happen.");
#pragma omp parallel reduction(+ : num_failed) // num_threads(strict:4)
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() == 4);
// Exceed limit, specify user warning message. Tolerate whatever was given.
__kmpc_push_num_threads_strict(NULL, __kmpc_global_thread_num(NULL), 20, 1,
"User-supplied warning for strict.");
#pragma omp parallel reduction(+ : num_failed)
// num_threads(strict:20) severity(warning)
// message("User-supplied warning for strict.")
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() <= 20);
// Exceed limit, no user message, use runtime default message for strict.
// Tolerate whatever value was given.
__kmpc_push_num_threads_strict(NULL, __kmpc_global_thread_num(NULL), 21, 1,
NULL);
#pragma omp parallel reduction(+ : num_failed) // num_threads(strict:21)
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() <= 21);
// Exceed limit at top level. Should see user warning message.
int threads3[2] = {24, 2};
__kmpc_push_num_threads_list_strict(NULL, __kmpc_global_thread_num(NULL), 2,
threads3, 1,
"User-supplied warning on strict list.");
#pragma omp parallel reduction(+ : num_failed)
// num_threads(strict:24,2) severity(warning)
// message("User-supplied warning on strict. list") // 1st level
{
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() <= 24);
#pragma omp parallel reduction(+ : num_failed) // 2nd level
{
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() <= 2);
}
}
// No strict limit at top level. Regular runtime limiting applies.
__kmpc_push_num_threads_list(NULL, __kmpc_global_thread_num(NULL), 2,
threads3);
#pragma omp parallel reduction(+ : num_failed)
// num_threads(24,2) // 1st level
{
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() <= 24);
#pragma omp parallel reduction(+ : num_failed) // 2nd level
{
#pragma omp single
num_failed = num_failed + !(omp_get_num_threads() <= 2);
}
}
return (!num_failed);
}
int main() {
int i;
int num_failed = 0;
for (i = 0; i < REPETITIONS; i++) {
if (!test_omp_parallel_num_threads_strict()) {
num_failed++;
}
}
return num_failed;
}
|
