PPT Slide

#include "mpi.h"

#include <stdio.h>

int main(argc, argv)

int argc;

char **argv;

{ int rank, size, i, buf[1];

MPI_Status status;

MPI_Init( &argc, &argv );

MPI_Comm_rank( MPI_COMM_WORLD, &rank );

MPI_Comm_size( MPI_COMM_WORLD, &size );

if (rank == 0) {

for (i=0; i*(size-1); i++) {

MPI_Recv( buf, 1, MPI_INT, MPI_ANY_SOURCE,

MPI_ANY_TAG, MPI_COMM_WORLD, &status );

printf( "Msg from %d with tag %d\n",

status.MPI_SOURCE, status.MPI_TAG );

}

else {

for (i=0; i i++)

MPI_Send( buf, 1, MPI_INT, 0, i, MPI_COMM_WORLD );

}

MPI_Finalize();

}