#include <stdio.h>
#include "mpi.h"

int main( int argc, char *argv[] )
{
    int     rank, size, len;
    char    name[MPI_MAX_PROCESSOR_NAME];

    MPI_Init( &argc, &argv );
    MPI_Comm_rank( MPI_COMM_WORLD, &rank );
    MPI_Comm_size( MPI_COMM_WORLD, &size );
    MPI_Get_processor_name( name, &len );
    name[len] = '\0';
    
    printf( "Hello world: rank %d of %d running on %s\n", rank, size, name );

    MPI_Finalize();
    return 0;
}