Re: [OMPI users] Mpirun invocation only works in debug mode, hangs in "normal" mode.

2016-05-16 Thread Jeff Squyres (jsquyres)
I'm afraid I don't know what the difference is in systemctld for ssh.socket vs. ssh.service, or why that would change Open MPI's behavior. One other thing to try is to mpirun non-MPI programs, like "hostname" and see if that works. This will help distinguish between problems with Open MPI's run

Re: [OMPI users] Mpirun invocation only works in debug mode, hangs in "normal" mode.

2016-05-14 Thread Andrew Reid
I think I might have fixed this, but I still don't really understand it. In setting up the RPi machines, I followed a config guide that suggested switching the SSH service in systemd to "ssh.socket" instead of "ssh.service". It's supposed to be lighter weight and get you cleaner shut-downs, and I'

[OMPI users] Mpirun invocation only works in debug mode, hangs in "normal" mode.

2016-05-14 Thread Andrew Reid
Hi all -- I am having a weird problem on a cluster of Raspberry Pi model 2 machines running the Debian/Raspbian version of OpenMPI, 1.6.5. I apologize for the length of this message, but I am trying to include all the pertinent details, but of course can't reliably discriminate between pertinent