Re: [Boost-build] Compiling Boost.MPI and mpich2 under Suse Linux

Subject: Re: [Boost-build] Compiling Boost.MPI and mpich2 under Suse Linux
From: Belcourt, Kenneth (kbelco_at_[hidden])
Date: 2010-05-28 14:52:42

I'd step back from Boost.MPI for now.  Write the canonical 10 line MPI  
program to print out the parallel size and rank and make sure this  
program runs without Boost, just MPI by itself.  Look carefully at  
what libraries are linked and which mpirun is used to exec the binary.

-- Noel

Here's what I mean.

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

int main (int argc, char *argv[])
{
     MPI_Init(&argc, &argv);
     int rank = 0;
     MPI_Comm_rank(MPI_COMM_WORLD, &rank);
     std::cout << "hello from processor " << rank << std::endl;
     MPI_Finalize();
     return 0;
}