OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [libgomp/] [testsuite/] [libgomp.c/] [omp_workshare1.c] - Rev 859

Go to most recent revision | Compare with Previous | Blame | View Log

/******************************************************************************
* 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;
}
 

Go to most recent revision | Compare with Previous | Blame | View Log

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.