Mercurial > hg > CbC > CbC_gcc
view libgomp/testsuite/libgomp.c/omp_hello.c @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
---|---|
date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children |
line wrap: on
line source
/****************************************************************************** * FILE: omp_hello.c * DESCRIPTION: * OpenMP Example - Hello World - C/C++ Version * In this simple example, the master thread forks a parallel region. * All threads in the team obtain their unique thread number and print it. * The master thread only prints the total number of threads. Two OpenMP * library routines are used to obtain the number of threads and each * thread's number. * AUTHOR: Blaise Barney 5/99 * LAST REVISED: 04/06/05 ******************************************************************************/ #include <omp.h> #include <stdio.h> #include <stdlib.h> int main (int argc, char *argv[]) { int nthreads, tid; /* Fork a team of threads giving them their own copies of variables */ #pragma omp parallel private(nthreads, tid) { /* Obtain thread number */ 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 disband */ return 0; }