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

int main(int argc, char **argv)
  {
   int tid,nthreads;
   MPI_Init(&argc,&argv);
   MPI_Comm_rank(MPI_COMM_WORLD, &tid);
   MPI_Comm_size(MPI_COMM_WORLD, &nthreads);
   if (tid==0)
      {
        printf("I am the master thread and I have a tid of 0\n");
      }
    else
      {
	printf("I am a worker thread, number %d out of %d total\n",tid,nthreads);
      }
   MPI_Finalize();
   return 0;
  }