//Simple MPI C Program
// p. 28 Tutorial slides
#include <stdio.h>
#include "mpi.h"
int main(int argc, char **argv)
{
    MPI_Init(&argc, &argv);
    printf("Hello world\n");
    MPI_Finalize();
    return 0;
}

/*

To check connections: recon -v lamhosts

mpicc -o simpleMpi simpleMpi.c
lamboot -v lamhosts   (this file has 4 hosts)

LAM 6.5.6/MPI 2 C++/ROMIO - University of Notre Dame

Executing hboot on n0 (helium.tjhsst.edu - 1 CPU)...
Executing hboot on n1 (sulfur.tjhsst.edu - 1 CPU)...
Executing hboot on n2 (phosphorus.tjhsst.edu - 1 CPU)...
Executing hboot on n3 (magnesium.tjhsst.edu - 1 CPU)...
topology done

mpirun N simpleMpi
Hello world
Hello world
Hello world
Hello world

lamclean
lamhalt
*/