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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libgomp/] [testsuite/] [libgomp.c/] [omp_workshare2.c] - Rev 280
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/****************************************************************************** * FILE: omp_workshare2.c * DESCRIPTION: * OpenMP Example - Sections Work-sharing - C/C++ Version * In this example, the OpenMP SECTION directive is used to assign * different array operations to threads that execute a SECTION. Each * thread receives its own copy of the result array to work with. * AUTHOR: Blaise Barney 5/99 * LAST REVISED: 04/06/05 ******************************************************************************/ #include <omp.h> #include <stdio.h> #include <stdlib.h> #define N 50 int main (int argc, char *argv[]) { int i, nthreads, tid; float a[N], b[N], c[N]; /* Some initializations */ for (i=0; i<N; i++) a[i] = b[i] = i * 1.0; #pragma omp parallel shared(a,b,nthreads) private(c,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 sections nowait { #pragma omp section { printf("Thread %d doing section 1\n",tid); for (i=0; i<N; i++) { c[i] = a[i] + b[i]; printf("Thread %d: c[%d]= %f\n",tid,i,c[i]); } } #pragma omp section { printf("Thread %d doing section 2\n",tid); 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 sections */ printf("Thread %d done.\n",tid); } /* end of parallel section */ return 0; }
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