On Thu, 2005-12-22 at 16:54, Rimmer, Todd wrote: > Since the SA views multicast operations at a node level, and applications > need to individually operate on multicast groups. It is appropriate for > the core stack to provide some multicast management APIs. These would > multiplex requests from all the applications on a node to make the > appropriate requests to the SA. reference counts would need to be > maintained in the core stack for each MC group so that the node would > remove itself from the group only on last application exit/unregister. > > This would also be a good place to handle the "MC group persistence issues". > Namely rejoining requested groups when ports go up/down, SMs change > (client reregister), etc.
Yes, this has been raised in a thread by Eitan started on 11/22 entitled "First Multicast Leave disconnects all other clients" (http://openib.org/pipermail/openib-general/2005-November/014023.html). -- Hal > Todd Rimmer > Chief Systems Architect SilverStorm Technologies > Voice: 610-233-4852 Fax: 610-233-4777 > [EMAIL PROTECTED] www.SilverStorm.com > > > > -----Original Message----- > > From: amith rajith mamidala [mailto:[EMAIL PROTECTED] > > Sent: Thursday, December 22, 2005 4:39 PM > > To: Sean Hefty > > Cc: openib > > Subject: RE: [openib-general] RFC MPI and app. requirements of OpenIB > > > > > > > > > An alternative is to provide UD and multicast/broadcast > > support in the CMA. I > > > know that the Intel MPI runs over DAPL, which does not > > provide multicast > > > support. Can MPI operate with unreliable multicast > > support? Does MPI plan on > > > using IB multicast? > > > > Yes, the MPI can operate with unreliable multicast support. > > MVAPICH-0.9.6 has this broadcast support over IB multicast. As Hal > > suggested earlier, application processes interact with SA to > > create/join > > multicast groups. > > > > Thanks, > > Amith > > > > > > > > > _______________________________________________ > > > openib-general mailing list > > > [email protected] > > > http://openib.org/mailman/listinfo/openib-general > > > > > > To unsubscribe, please visit > > http://openib.org/mailman/listinfo/openib-general > > > > > > > _______________________________________________ > > openib-general mailing list > > [email protected] > > http://openib.org/mailman/listinfo/openib-general > > > > To unsubscribe, please visit > http://openib.org/mailman/listinfo/openib-general > _______________________________________________ > openib-general mailing list > [email protected] > http://openib.org/mailman/listinfo/openib-general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
