[Pympi-users] pyMPI problem

[Patrick M. <pnm...@pa...>]

Short answer: Try % env CC=mpicc ./configure 

Often, the simplest way to get pyMPI to work is to find the right
version of mpicc.  MPICH and LAM and other MPI libraries often
define this script as a way to simplify the often complex set of
library and include files needed to link.

The name is typically something like mpicc mpcc mpigcc mpiicc or
you can use a MPI C++ compiler like mpiCC mpiiCC.

First use this test program to make sure it works right...

% cat test.c
#include <mpi.h>
#include <stdio.h>

int main(int argc, char** argv) {
  int rank;
  MPI_Init(&argc,&argv);
  MPI_Comm_rank(MPI_COMM_WORLD,&rank);
  printf("I am rank %d\n",rank);
  MPI_Finalize();
  return 0;
}

% mpicc test.c
% mpirun -np 4 a.out
I am rank 3
I am rank 1
I am rank 0
I am rank 2

Once you have verified a working MPI C compiler, just tell
the configure script.  An easy way to do that is to set
an environment variable.

% env CC=mpicc ./configure --prefix=$HOME/pub

Cheers,

Pat