In PyMW 0.4 we decided to change from using pympi to mpi4py for the PyMW MPI interface. pympi has not been updated in six years, whereas mpi4py is part of the SciPy suite and very well supported. This also allows us to remove the MPI manager function from a separate file so the MPI interface is now entirely self contained. There may still be problems involving external data using MPI without a shared filesystem, though these will be fixed in the next release. The interface also correctly checks for mpi4py now, and gracefully quits if it is not available.
Posted by eheien