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openmp_datasharing.c
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openmp_datasharing.c
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#include <stdio.h>
#include <stdlib.h>
#include <omp.h>
int main()
{
omp_set_num_threads(30);
int i, x=10;
printf("******* private Clause ******* \n \n");
printf("Value of x before parallel section: %d\n", x);
#pragma omp parallel for private(x)
for(i=0; i < 5; i++) {
int x_initial = x;
x = i;
printf("Thread number %d: initial Value of x %d New value of x: %d\n",omp_get_thread_num(), x_initial, x);
}
printf("\n ******* firstprivate Clause ******* \n \n");
printf("Value of x after parallel section: %d\n", x);
#pragma omp parallel for firstprivate(x)
for(i=0; i < 5; i++) {
int x_initial = x;
x = i;
printf("Thread number %d: initial Value of x %d New value of x: %d\n",omp_get_thread_num(), x_initial, x);
}
printf("\n ******* lastprivate Clause ******* \n \n");
printf("Value of x after parallel section: %d\n", x);
#pragma omp parallel for lastprivate(x)
for(i=0 ; i < 5 ;i++) {
int x_initial = x;
x = i + 10;
printf("Thread number %d: initial Value of x %d New value of x: %d\n",omp_get_thread_num(), x_initial, x);
}
printf("Value if x after parallel section: %d\n", x);
}