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21 lines
559 B
C

#include "mpi.h"
#include <string.h>
#include <stdio.h>
int main( int argc, char **argv){
char message[20];
int myrank;
MPI_Status status;
MPI_Init( &argc, &argv );
MPI_Comm_rank( MPI_COMM_WORLD, &myrank );
if (myrank == 0){ /* code for process zero */
strcpy(message,"Hello, there");
MPI_Send(message, strlen(message)+1, MPI_CHAR, 1, 99, MPI_COMM_WORLD);
}
else if (myrank == 1){ /* code for process one */
MPI_Recv(message, 20, MPI_CHAR, 0, 99, MPI_COMM_WORLD, &status);
printf("received :%s:\n", message);
}
MPI_Finalize();
return 0;
}