kyron@kyron ~/1_Files/1_ETS/1_Maitrise/Code/HelloWorlds $ ll
total 4
-rw-rw-r--  1 kyron users 282 Mar 22 22:31 hello.c
kyron@kyron ~/1_Files/1_ETS/1_Maitrise/Code/HelloWorlds $ cat hello.c
#include <stdio.h>
#include <mpi.h>

int main(int argc, char **argv) {
        int rank, size;

        MPI_Init(&argc, &argv);
        MPI_Comm_size(MPI_COMM_WORLD, &size);
        MPI_Comm_rank(MPI_COMM_WORLD, &rank);
        printf("Hello damned world. I am %d of %d\n", rank, size);
        MPI_Finalize();
        return 0;
}
kyron@kyron ~/1_Files/1_ETS/1_Maitrise/Code/HelloWorlds $ export PATH=$PATH:/usr/lib/openmpi/1.0.1-gcc-3.4/bin
kyron@kyron ~/1_Files/1_ETS/1_Maitrise/Code/HelloWorlds $ export LD_LIBRARY_PATH=/usr/lib/openmpi/1.0.1-gcc-3.4/lib/
kyron@kyron ~/1_Files/1_ETS/1_Maitrise/Code/HelloWorlds $ mpicc-1.0.1-gcc-3.4 hello.c -o hello
kyron@kyron ~/1_Files/1_ETS/1_Maitrise/Code/HelloWorlds $ orterun -np 4 hello
Hello world
Hello world
Hello world
Hello world
kyron@kyron ~/1_Files/1_ETS/1_Maitrise/Code/HelloWorlds $