[openib-general] IB mcast question

[Hal Rosenstock]

This is not the main issue (the lack of replication is) but I don't think a subsequent join from the same port does any harm but ib_multicast shouldn't be doing this. It would matter in terms of the leave though.
 
-- Hal

________________________________

From: openib-general-bounces at openib.org on behalf of Roland Dreier
Sent: Mon 8/14/2006 5:24 PM
To: Steve Wise
Cc: openib-general
Subject: Re: [openib-general] IB mcast question



    Steve> So is this replicating done in the mthca hca?

Yes, it should be.  There may be a bug in the mthca kernel multicast
code for handling multiple QPs attached to the same group.

    Steve> Since one app is getting the mcast packet, can I assume the
    Steve> opensm code is doing the right thing switch/port wise?

Yep.

    Steve> Should the SM get join requests for both applications that
    Steve> join the group on the same host?  Or only the first one?

No there should only be one join request for a given port.

 - R.


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