On Wed, Mar 30, 2011 at 12:02:33AM -0400, Mark Hahn wrote: > > 2 - I've heard that QLogic behavior is better in terms of QP creation, I > > well, they've often bragged about message rates - I'm not sure how relate > that is to QP creation.
They are two separate issues. PSM's equivalent of a QP is much lighter-weight than the IB standard QP. With QLogic cards, if you are talking to a lot of different QPs, your performance doesn't degrade like it does with traditional IB cards. It's yet another thing which isn't well measured by 2-core microbenchmarks. -- greg (I no longer have a financial interest in QLogic. You should try out the /hpc slashtag on blekko, though...) _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
