[mpich-discuss] Increasing MPI ranks

[Jeffrey Larson]

I am trying to have a single master, with a group of workers who are
themselves calculating function values. The evaluation of the function may
itself involve spawning MPI tasks.



On Wed, Mar 12, 2014 at 11:09 AM, Jed Brown <jed at jedbrown.org> wrote:

> Jeffrey Larson <jmlarson at anl.gov> writes:
>
> > I was unaware of this issue with mpi4py, but I can reproduce it as well.
> I
> > will contact the mpi4py developers.
>
> Are you using lots of masters or lots of workers?  I can run the example
> in demo/spawning.  It has an analogous example in C.
>
> I had misinterpreted the environment in which you were trying to get the
> parent, so ignore my first mail.
>
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