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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libgomp/] [testsuite/] [libgomp.c/] [omp_workshare1.c] - Rev 307
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/****************************************************************************** * FILE: omp_workshare1.c * DESCRIPTION: * OpenMP Example - Loop Work-sharing - C/C++ Version * In this example, the iterations of a loop are scheduled dynamically * across the team of threads. A thread will perform CHUNK iterations * at a time before being scheduled for the next CHUNK of work. * AUTHOR: Blaise Barney 5/99 * LAST REVISED: 04/06/05 ******************************************************************************/ #include <omp.h> #include <stdio.h> #include <stdlib.h> #define CHUNKSIZE 10 #define N 100 int main (int argc, char *argv[]) { int nthreads, tid, i, chunk; float a[N], b[N], c[N]; /* Some initializations */ for (i=0; i < N; i++) a[i] = b[i] = i * 1.0; chunk = CHUNKSIZE; #pragma omp parallel shared(a,b,c,nthreads,chunk) private(i,tid) { tid = omp_get_thread_num(); if (tid == 0) { nthreads = omp_get_num_threads(); printf("Number of threads = %d\n", nthreads); } printf("Thread %d starting...\n",tid); #pragma omp for schedule(dynamic,chunk) for (i=0; i<N; i++) { c[i] = a[i] + b[i]; printf("Thread %d: c[%d]= %f\n",tid,i,c[i]); } } /* end of parallel section */ return 0; }
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