On Mon, Oct 1, 2012 at 10:33 AM, Ralph Castain <rhc_at_[hidden]> wrote:
> Yes, that is the expected behavior as you describe it.
> If you want to run on hosts that are not already provided (via hostfile in the environment or on the command line), then you need to use the "add-host" or "add-hostfile" MPI_Info key. See "man MPI_Comm_spawn" for details.
Neat. It works. Thanks, I just didn't quite grasp the difference.