Exemplu simplu de algoritm paralel

compilarea se face: gcc -fopenmp sursa.c -o sursa

#include "mp.h"  

void main ()  {  

int nthreads, tid;  

/* Fork a team of threads with each thread having a private tid variable */ 

#pragma omp parallel private(tid)   {    

  /* Obtain and print thread id */   

  tid = omp_get_thread_num();   

  printf("Hello World from thread = %d\n", tid);    

  /* Only master thread does this */    

  if (tid == 0)      {     

    nthreads = omp_get_num_threads();     

    printf("Number of threads = %d\n", nthreads);     

  }    

  }  /* All threads join master thread and terminate */  

}