Ralph, You're right that PSM wouldn't support dynamically connecting jobs. I don't think intercomm_create implies that though. For example you could split COMM_WORLD's group into two groups, then create an intercommunicator across those two groups. I'm guessing that's what this test is doing, I'd have to go read the code to be sure though.
I verified this tests works over PSM and OMPI 1.6.5; it fails on 1.8.1 and 1.8.3. Andrew > -----Original Message----- > From: devel [mailto:devel-boun...@open-mpi.org] On Behalf Of Ralph > Castain > Sent: Tuesday, November 11, 2014 2:23 PM > To: Open MPI Developers > Subject: Re: [OMPI devel] 1.8.3 and PSM errors > > I thought PSM didn’t support dynamic operations such as Intercomm_create > - yes? The PSM security key wouldn’t match between the two jobs, and so > there is no way for them to communicate. > > Which is why I thought PSM can’t be used for dynamic operations at all, > including comm_spawn and connect/accept > > > > On Nov 11, 2014, at 2:13 PM, Jeff Squyres (jsquyres) <jsquy...@cisco.com> > wrote: > > > > On Nov 11, 2014, at 4:56 PM, Friedley, Andrew > <andrew.fried...@intel.com> wrote: > > > >> OK, I'm able to reproduce this now, not sure why I couldn't before. I took > a look at the diff of the PSM MTL from 1.6.5 to 1.8.1, and nothing is standing > out to me. > >> > >> Question more for the general group: Did anything related to the > behavior/usage of MTL add_procs() change in this time window? > > > > The time between the 1.6.x series and the 1.8.x series is measure in terms > of a year or two, so, ya, something might have changed... > > > >> More particularly, it looks like add_procs is being called a second time > during MPI_Intercomm_create and being passed a process that is already > connected (passed into the first add_procs call). Is that right? Should the > MTL handle multiple add_procs calls with the same proc provided? > > > > I'm afraid I don't know much about the MTL interface. > > > > George / Nathan? > > > > -- > > Jeff Squyres > > jsquy...@cisco.com > > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > > _______________________________________________ > > 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/2014/11/16294.php > > _______________________________________________ > 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/2014/11/16295.php
