/* From: "COMPUTATIONAL PHYSICS, 2nd Ed" 
   by RH Landau, MJ Paez, and CC Bordeianu 
   Copyright Wiley-VCH 2007.
   Electronic Materials copyright: R Landau, Oregon State Univ, 2007;
   MJ Paez, Univ Antioquia, 2007; & CC Bordeianu, Univ Bucharest, 2007
   Support by National Science Foundation                              
*/  
//  MPIhello.c         has each processor prints hello to screen

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

int main( int argc, char *argv[] ) { 
  int myrank;
  MPI_Init( &argc, &argv );                         // Initialize MPI
  MPI_Comm_rank(MPI_COMM_WORLD, &myrank);           // Get CPU's rank
  printf( "Hello World from processor %d\n", myrank );
  MPI_Finalize( );                                    // Finalize MPI
  return 0;
}