/******************************************************************************
* FILE: mpi_hello.c
* DESCRIPTION:
*   MPI tutorial example code: Simple hello world program
* AUTHOR: Blaise Barney
* LAST REVISED: 03/05/10
******************************************************************************/
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
#define MASTER	0

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

  MPI_Init(&argc, &argv);
  MPI_Comm_size(MPI_COMM_WORLD, &numtasks);
  MPI_Comm_rank(MPI_COMM_WORLD, &taskid);
  MPI_Get_processor_name(hostname, &len);
  printf ("Hello from task %d on %s!\n", taskid, hostname);
  if (taskid == MASTER)
    printf("MASTER: Number of MPI tasks is: %d\n", numtasks);
  MPI_Finalize();
}