Ok Jeff, i have understood. Thanks very much for your help!
Regards. 2010/4/13 Jeff Squyres <jsquy...@cisco.com> > On Apr 13, 2010, at 9:17 AM, Gabriele Fatigati wrote: > > > My actual configuration is: > > > > btl = ^tcp > > btl_tcp_if_exclude = eth0,ib0,ib1 > > oob_tcp_include = eth1,lo > > > > But is it right? I have some doubt.. > > It depends on what "right" is in your environment. :-) > > Your default config excludes the BTL TCP, assumedly because you want > OpenFabrics/IB to be the default transport for MPI messages. That's > probably good. In the "^tcp" case, the BTL TCP isn't even loaded -- so the > btl_tcp_if_exclude parameter isn't even used. But if someone overrides the > "btl" parameter and *does* load the TCP BTL, then the btl_tcp_if_exclude > parameter will mean something. > > So it's not harmful to have the btl_tcp_if_exclude parameter specified, > even if it isn't used most of the time. > > The oob_tcp_include parameter tells OMPI how to use it's "out of band" > channel for setup/teardown of the overall job, creating MPI data > connections, etc. You're telling it which devices it can use. It probably > would be ok to use "eth1" and drop the ",lo" part. > > -- > Jeff Squyres > jsquy...@cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > > -- Ing. Gabriele Fatigati Parallel programmer CINECA Systems & Tecnologies Department Supercomputing Group Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy www.cineca.it Tel: +39 051 6171722 g.fatigati [AT] cineca.it
