37 lines
877 B
C
37 lines
877 B
C
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/* FILE: omp_bug2.c
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* DESCRIPTION:
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* Another OpenMP program with a bug.
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******************************************************************************/
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#include <omp.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char *argv[]) {
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int nthreads, i, tid;
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float total;
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/*** Spawn parallel region ***/
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#pragma omp parallel
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{
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/* Obtain thread number */
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tid = omp_get_thread_num();
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/* Only master thread does this */
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if (tid == 0) {
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nthreads = omp_get_num_threads();
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printf("Number of threads = %d\n", nthreads);
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}
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printf("Thread %d is starting...\n", tid);
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#pragma omp barrier
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/* do some work */
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total = 0.0;
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#pragma omp for schedule(dynamic, 10)
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for (i = 0; i < 1000000; i++)
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total = total + i * 1.0;
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printf("Thread %d is done! Total= %e\n", tid, total);
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} /*** End of parallel region ***/
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}
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