Rahul Nabar <rpna...@gmail.com> writes: > On Fri, Jun 26, 2009 at 1:30 PM, Jeff Layton<layto...@att.net> wrote: >> Try something like OpenMX over GigE. Much better latencies
∼6μs, if that counts as much better. >> and should perform and scale better. Are there data on that? I'm not clear how much more efficient than TCP it might be CPU-wise, for instance, and I'm not sure how best to check. > How close does it get to native Myrinet performance? Or Infiniband. Not at all for Infiniband. With the right NICs on two rails, it's competitive with our Myrinet-2000 system. See open-mx.org for 10G data, but they're presumably not relevant to you. > OpenMX might be a great way for our cluster too to achieve better > performance without changing our eth backbone. In principle with Open MPI, it should use the two rails (NICs) to double the bandwidth as with TCP; that's currently broken, although Manchester seem to be getting away with it somehow. Brice will get back to fixing it when he returns in a couple of weeks. _______________________________________________ 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
