[Pympi-users] Re: pyMPI problem

[Nils W. <nw...@me...>]

Patrick Miller wrote:

>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
>
>
>
>
>  
>
Your test works fine for me

/home/nwagner> mpicc mpi_test.c
/home/nwagner> mpirun -np 2 a.out
Password:
I am rank 0
I am rank 1
/home/nwagner>

but

/home/nwagner> mpirun -v -np 2 pyMPI
running /home/nwagner/pyMPI on 2 LINUX ch_p4 processors
Created /home/nwagner/PI29497
Password:
Python 2.3+ (pyMPI 2.0b0) on linux2
Type "help", "copyright", "credits" or "license" for more information.


get stuck without a prompt.

For what reason ??

Nils