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

int main (int argc, char** argv) {
  int  ntasks, taskid, len;
  char hostname[MPI_MAX_PROCESSOR_NAME];

  MPI_Init(&argc, &argv);
  MPI_Comm_size(MPI_COMM_WORLD,&ntasks);
  MPI_Comm_rank(MPI_COMM_WORLD,&taskid);
  MPI_Get_processor_name(hostname, &len);

  printf ("Hello from task %d of %d on %s\n", taskid, ntasks, hostname);
  
  MPI_Finalize();
}