Two questions:

I have a group of manager processes, each of which uses MPI_Comm_spawn() to create individual worker processes one at a time.  

Occasionally, a worker has to exit and is replaced by another worker via MPI_Comm_spawn().    If the exiting worker calls MPI_Finalize(),

will it sit there waiting for all other managers and workers in MPI_COMM_WORLD to do the same, or will it wait only for the manager

that created its inter-communicator to call MPI_Finalize?

In either case, maybe it is better for the worker to NOT call MPI_Finalize at all so that it doesn’t sit there taking up a core’s resources

while it waits for the others.   What are the implications of not calling MPI_Finalize in the workers?

Thanks,

Kurt