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

int main( argc, argv )
     int argc;
     char **argv;
{
  int rank, size;
  MPI_Init( &argc, &argv );
  MPI_Comm_rank( MPI_COMM_WORLD, &rank );
  MPI_Comm_size( MPI_COMM_WORLD, &size );
  printf( "Hello world! I'm %d of %d\n", 
	  rank, size );
  system("hostname");
  MPI_Finalize();
  return 0;
}