Files
Presentations/EVI - 2016/EVI - 12/Examples/hello_mpi_bcast.c

32 lines
632 B
C
Executable File

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mpi.h>
#define BUFSIZE 128
int main(int argc, char **argv) {
char buffer[BUFSIZE];
int rank;
/* Initalize MPI and get the process' rank. */
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
if(rank == 0) {
memset(buffer, 0, BUFSIZE);
sprintf(buffer, "Hello, Broadcast!");
printf("MASTER: Preparing for broadcast!\n");
}
MPI_Bcast(buffer, BUFSIZE, MPI_CHAR, 0, MPI_COMM_WORLD);
if(rank != 0) {
printf("SLAVE %d: Master broadcasted \"%s\"\n", rank, buffer);
}
MPI_Finalize();
return EXIT_SUCCESS;
}