//HelloWorldMPI, from John Urbanic psc slides

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

int main(int argc, char **argv)
{
    int my_PE_num;
    MPI_Init(&argc, &argv);
    MPI_Comm_rank(MPI_COMM_WORLD, &my_PE_num);
    printf("Hello from %d.\n", my_PE_num);
    MPI_Finalize();
    return 0;
}

/*
mpicc -o helloWorldMpi helloWorldMpi.c
lamboot -v lamhosts   

mpirun -np 10 helloWorldMP

Hello from 0.
Hello from 1.
Hello from 2.
Hello from 4.
Hello from 8.
Hello from 3.
Hello from 5.
Hello from 9.
Hello from 6.
Hello from 7.



lamhalt (if you're through with this MPI session)
*/