> 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
