Subversion Repositories openrisc_2011-10-31

/******************************************************************************

* 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;

}