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*
* Filename: nestedOpenmp.c
*
* Description:
*
* Version: 1.0
* Created: 03/22/12 20:33:41
* Revision: none
* Compiler: gcc
*
* Author: YOUR NAME (),
* Company:
*
*
*
*
*
* Compiling :gcc -fopenmp -o nestedOpenmp nestedOpenmp.c
*
*
* Level 1: number of threads in the team - 2
* Level 2: number of threads in the team - 2
* Level 2: number of threads in the team - 2
* Level 3: number of threads in the team - 2
* Level 3: number of threads in the team - 2
* Level 3: number of threads in the team - 2
* Level 3: number of threads in the team - 2
*
*
*
* =====================================================================================
*/
#include <omp.h>
#include <stdio.h>
void report_num_threads(int level)
{
#pragma omp single
{
printf("Level %d: number of threads in the team - %d\n",
level, omp_get_num_threads());
}
}
int main()
{
// omp_set_dynamic(0);
omp_set_nested(1);
//set nested parallel with non-zero value : enable nested parallel is ture
#pragma omp parallel num_threads(2)
{
report_num_threads(1);
#pragma omp parallel num_threads(2)
{
report_num_threads(2);
#pragma omp parallel num_threads(2)
{
report_num_threads(3);
}
}
}
return(0);
}
