//HelloWorldMPI.cpp, from John Urbanic psc slides

#include <iostream>
#include <mpi++.h>
using namespace std;

int main(int argc, char **argv)
{
    int my_rank;
     MPI::Init(argc, argv);
    my_rank = MPI::COMM_WORLD.Get_rank();
    cout << "Hello from " << my_rank << "." << endl;
    MPI::Finalize();
    
    return 0;
}

/*
mpiCC -o helloWorldCC helloWorldCC.cpp 
mpirun -np 10 helloWorldCC

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

lamhalt (if you're done with MPI)
*/