I think this is expected behavior. If you have networks that you need Open MPI to ignore (e.g., a private network that *looks* reachable between multiple servers -- because the interfaces are on the same subnet -- but actually *isn't*), then the include/exclude mechanism is the right way to exclude them.
That being said, I'm not sure why the behavior is different between trunk and v1.8. On Aug 13, 2014, at 1:41 AM, Gilles Gouaillardet <gilles.gouaillar...@iferc.org> wrote: > Folks, > > i noticed mpirun (trunk) hangs when running any mpi program on two nodes > *and* each node has a private network with the same ip > (in my case, each node has a private network to a MIC) > > in order to reproduce the problem, you can simply run (as root) on the > two compute nodes > brctl addbr br0 > ifconfig br0 192.168.255.1 netmask 255.255.255.0 > > mpirun will hang > > a workaroung is to add --mca btl_tcp_if_include eth0 > > v1.8 does not hang in this case > > Cheers, > > Gilles > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2014/08/15623.php -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
