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
| // RUN: %libomp-compile-and-run
#include <stdio.h>
#include <stdlib.h>
#include "omp_testsuite.h"
#include "omp_my_sleep.h"
#define CFSMAX_SIZE 1000
#define MAX_TIME 0.01
#ifdef SLEEPTIME
#undef SLEEPTIME
#define SLEEPTIME 0.0005
#endif
int test_omp_for_schedule_static()
{
int threads;
int i,lasttid;
int * tids;
int notout;
int maxiter;
int chunk_size;
int counter = 0;
int tmp_count=1;
int lastthreadsstarttid = -1;
int result = 1;
chunk_size = 7;
tids = (int *) malloc (sizeof (int) * (CFSMAX_SIZE + 1));
notout = 1;
maxiter = 0;
#pragma omp parallel shared(tids,counter)
{ /* begin of parallel*/
#pragma omp single
{
threads = omp_get_num_threads ();
} /* end of single */
} /* end of parallel */
if (threads < 2) {
omp_set_num_threads(2);
threads = 2;
}
fprintf (stderr,"Using an internal count of %d\nUsing a specified"
" chunksize of %d\n", CFSMAX_SIZE, chunk_size);
tids[CFSMAX_SIZE] = -1; /* setting endflag */
#pragma omp parallel shared(tids)
{ /* begin of parallel */
double count;
int tid;
int j;
tid = omp_get_thread_num ();
#pragma omp for nowait schedule(static,chunk_size)
for(j = 0; j < CFSMAX_SIZE; ++j) {
count = 0.;
#pragma omp flush(maxiter)
if (j > maxiter) {
#pragma omp critical
{
maxiter = j;
}
}
/*printf ("thread %d sleeping\n", tid);*/
while (notout && (count < MAX_TIME) && (maxiter == j)) {
#pragma omp flush(maxiter,notout)
my_sleep (SLEEPTIME);
count += SLEEPTIME;
printf(".");
}
#ifdef VERBOSE
if (count > 0.) printf(" waited %lf s\n", count);
#endif
/*printf ("thread %d awake\n", tid);*/
tids[j] = tid;
#ifdef VERBOSE
printf("%d finished by %d\n",j,tid);
#endif
} /* end of for */
notout = 0;
#pragma omp flush(maxiter,notout)
} /* end of parallel */
/**** analysing the data in array tids ****/
lasttid = tids[0];
tmp_count = 0;
for (i = 0; i < CFSMAX_SIZE + 1; ++i) {
/* If the work was done by the same thread increase tmp_count by one. */
if (tids[i] == lasttid) {
tmp_count++;
#ifdef VERBOSE
fprintf (stderr, "%d: %d \n", i, tids[i]);
#endif
continue;
}
/* Check if the next thread had has the right thread number. When finding
* threadnumber -1 the end should be reached.
*/
if (tids[i] == (lasttid + 1) % threads || tids[i] == -1) {
/* checking for the right chunk size */
if (tmp_count == chunk_size) {
tmp_count = 1;
lasttid = tids[i];
#ifdef VERBOSE
fprintf (stderr, "OK\n");
#endif
} else {
/* If the chunk size was wrong, check if the end was reached */
if (tids[i] == -1) {
if (i == CFSMAX_SIZE) {
fprintf (stderr, "Last thread had chunk size %d\n",
tmp_count);
break;
} else {
fprintf (stderr, "ERROR: Last thread (thread with"
" number -1) was found before the end.\n");
result = 0;
}
} else {
fprintf (stderr, "ERROR: chunk size was %d. (assigned"
" was %d)\n", tmp_count, chunk_size);
result = 0;
}
}
} else {
fprintf(stderr, "ERROR: Found thread with number %d (should be"
" inbetween 0 and %d).", tids[i], threads - 1);
result = 0;
}
#ifdef VERBOSE
fprintf (stderr, "%d: %d \n", i, tids[i]);
#endif
}
return result;
}
int main()
{
int i;
int num_failed=0;
for(i = 0; i < REPETITIONS; i++) {
if(!test_omp_for_schedule_static()) {
num_failed++;
}
}
return num_failed;
}
|