> Do you mean that you are starting it via ./my_mpi_program?
Yes.
> Uck. :-(
Yes. :)
> What happens if you replace readline with a simple fgets() (or
> equivalent)? That is, I'm curious to see if the problem is with
> OMPI's interaction with readline or our I/O forwarding in general.
Yes, disabling readline makes the problem go away. I've read
http://www.open-mpi.org/faq/?category=running#mpirun-curses-readline
Is there any method to minimize the impact that openmpi has on the
spawning program, stdin in particular?
> No, it is not possible to disable iof.
Setting iof_base_window_size=0 seemed to help, though it could be my
imagination since the problem's effects don't seem to be very
consistent.
thank you,
Will
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