Mercurial > hg > CbC > CbC_gcc

comparison libgomp/testsuite/libgomp.c/omp_workshare4.c @ 0:a06113de4d67

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children 04ced10e8804
comparison
equal deleted inserted replaced
-1:000000000000 0:a06113de4d67
1 /******************************************************************************
2 * OpenMP Example - Combined Parallel Loop Work-sharing - C/C++ Version
3 * FILE: omp_workshare4.c
4 * DESCRIPTION:
5 * This is a corrected version of the omp_workshare3.c example. Corrections
6 * include removing all statements between the parallel for construct and
7 * the actual for loop, and introducing logic to preserve the ability to
8 * query a thread's id and print it from inside the for loop.
9 * SOURCE: Blaise Barney 5/99
10 * LAST REVISED: 03/03/2002
11 ******************************************************************************/
12
13 #include <omp.h>
14 #include <stdio.h>
15 #define N 50
16 #define CHUNKSIZE 5
17
18 main () {
19
20 int i, chunk, tid;
21 float a[N], b[N], c[N];
22 char first_time;
23
24 /* Some initializations */
25 for (i=0; i < N; i++)
26 a[i] = b[i] = i * 1.0;
27 chunk = CHUNKSIZE;
28 first_time = 'y';
29
30 #pragma omp parallel for \
31 shared(a,b,c,chunk) \
32 private(i,tid) \
33 schedule(static,chunk) \
34 firstprivate(first_time)
35
36 for (i=0; i < N; i++)
37 {
38 if (first_time == 'y')
39 {
40 tid = omp_get_thread_num();
41 first_time = 'n';
42 }
43 c[i] = a[i] + b[i];
44 printf("tid= %d i= %d c[i]= %f\n", tid, i, c[i]);
45 }
46
47 return 0;
48 }