Hi Jörg, On Mon, Oct 27, 2014 at 3:56 AM, Jörg Saßmannshausen <j.sassmannshau...@ucl.ac.uk> wrote: > I got some older dual Mellanox Technologies MT23108 cards (8.5 Gb/sec (4X)) > and currently I am only using one of the two ports on them. > I was wondering, is it possible with InfiniBand to utilise the second port in > such a way that I can increase the bandwith of the network (and lower the > latency maybe)?
Last time I checked, the Linux bonding driver didn't allow to bond IB interfaces to increase throughput. I'd be happy to hear that this changed, but I think only redundancy modes (such as active-backup) were possible. Now, Open MPI can take advantage of multiple, independent ports connected to the same fabric: see http://www.open-mpi.org/faq/?category=openfabrics#ofa-port-wireup for details. Cheers, -- Kilian _______________________________________________ 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
