openmpi/examples/oshmem_symmetric_data.c

57 lines
1.1 KiB
C

/*
* Copyright (c) 2014-2016 Mellanox Technologies, Inc.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include <stdio.h>
#include <shmem.h>
#define SIZE 16
int main(int argc, char* argv[])
{
short source[SIZE];
static short target[SIZE];
int i;
int num_pe, my_pe;
shmem_init();
num_pe = shmem_n_pes();
my_pe = shmem_my_pe();
if (my_pe == 0) {
/* initialize array */
for(i = 0; i < SIZE; i++) {
source[i] = i;
}
/* local, not symmetric */
/* static makes it symmetric */
/* put "size" words into target on each PE */
for(i = 1; i < num_pe; i++) {
shmem_short_put(target, source, SIZE, i);
}
}
shmem_barrier_all(); /* sync sender and receiver */
if (my_pe != 0) {
printf("Target on PE %d is \t", my_pe);
for(i = 0; i < SIZE; i++) {
printf("%hd \t", target[i]);
}
printf("\n");
}
shmem_barrier_all(); /* sync before exiting */
shmem_finalize();
return 0;
}