#include <iostream>
#include <mpi.h>

using namespace std;

int main(int argc, char* argv[])
{
    MPI::Init(argc, argv);

    int id = MPI::COMM_WORLD.Get_rank();
    int np = MPI::COMM_WORLD.Get_size();
    char processor_name[MPI_MAX_PROCESSOR_NAME];
    int len;

    MPI::Get_processor_name(processor_name, len);

    cout << "Hello world from process " << id
         << " out of " << np
         << ", processor name " << processor_name
         << endl;

    MPI::Finalize();
    return 0;
}