[SciPy-User] Use of MPI in extension modules

Stefan Seefeld seefeld@sympatico...
Wed Nov 11 16:48:11 CST 2009

On 11/11/2009 05:16 PM, Sturla Molden wrote:
> If you only get rank 0 reported, it means you spawned just one process.
> That could happen if you forget to specify how many processes you want
> in the call to mpiexec.

I get rank 0 reported in each of the spawned processes, which is caused 
by each one calling MPI_Init() as if it was the only process.
What I need to know is precisely how to call MPI_Init(), i.e. what to 
arguments to pass (either from sys.argv, or some other list where this 
gets stored when ipython invokes iengine).



       ...ich hab' noch einen Koffer in Berlin...

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