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 <[email protected]> wrote:

Jeffrey Larson <[email protected]> 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.