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

int main(argc,argv) 
  int  argc;
  char **argv;
{ 
  int numtasks, rank;

  MPI_Init (&argc,&argv); 

  MPI_Comm_size(MPI_COMM_WORLD, &numtasks);   
  MPI_Comm_rank(MPI_COMM_WORLD, &rank); 

  printf ("Hello world from process %d of %d\n", rank, numtasks);

  MPI_Finalize();
}