To start, I would ensure that all firewalling (e.g., iptables) is disabled on all machines involved.
On Jun 11, 2012, at 10:16 AM, BOUVIER Benjamin wrote: > Hi, > >> I'd guess that running net pipe with 3 procs may be undefined. > > It is indeed undefined. Running the net pipe program locally with 3 > processors blocks, on my computer. > > This issue is especially weird as there is no problem for running the example > program on network with MPICH2 implementation, for 2 processes. > > However, with MPICH2, it fails with 3 processes and blocks also on connect > ("Connection refused"), which could indicate that it's actually a network > issue, with both MPICH2 and OMPI. I don't know how many connections OMPI use > to send the data in the example program, but with the assumption that it > tries to open 2 connections (while for the same program, MPICH2 only uses one > connection, which is another hypothesis), maybe the number of connections is > the right way to look for. I'll ask MPICH2 users on their mailing list, so as > to get their opinion about it. > > Now that I know the program doesn't work both with OMPI and MPICH2 > implementations, I guess it's not dependant of MPI implementation. > > If you have any ideas or comments, I would be pleased to hear them. > > -- > Benjamin Bouvier > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/