On Tuesday 27 March 2007, Mark Hahn wrote: > http://www.hpcwire.com/hpc/1336731.html > > well, if the numbers mean what they appear to mean, this is quite > a dramatic breakthrough: 1.2 us, 25M msg/s. since we just happend to > be talking about "conventional" IB vs Infinipath (1.29 us, 11.3M msg/s). > > or is this an example of message aggregation? heck, from the url > above, it might even be counting intra-box messages.
Nope, this is "normal" ping-pong for the new generation cards (connectx). Maybe a bit optimistic though, I'd expect closer to 1.5 in a back-to-back config. > also, I'm sorta amazed people keep selling (and presumably buying) > dual-port IB cards. doesn't that get quite expensive, switch-wise? Not defending them but, It could possibly maybe be useful if you have a stand-alone IB net for, say, storage or something else not mpi. Also, it's not like they're that much more expensive than single port ones... /Peter > regards, mark hahn.
pgpRRunHNXPG0.pgp
Description: PGP signature
_______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
