> > I tend to think of IB as mainly for high-bandwidth, since afaikt its > > latency isn't even as good as myri 2g (mx, 3 us). to say nothing of > > myri 10g, quadrics, numalink, sci. > > I know some people don't think of InfiniPath as being InfiniBand, but > really, Mark, I didn't think you were one of them! ;-)
hmm, I had the impression that InfiniPath operated in either fast InfiniPath-to-InfiniPath mode, or in slow generic IB mode. that is, that in "fast" mode, it was mostly just recycling IB phy layers. > In any case, yes, you are correct for Mellanox InfiniBand HCAs, but > not for InfiniPath. so if Mellanox IB has latency X, and InfiniPath has Y, the expected latency between the two is around (X+Y)/2? _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
