#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);
   printf("Hello world! I'm %d of %d on %s\n", rank, size, name);
   MPI_Finalize();

   return 0;
}