> > The next slide shows a graph of the LS-Dyna results recently > submitted to topcrunch.org, showing that InfiniPath SDR beats > Mellanox DDR on the neon_refined_revised problem, both > running on 3.0 Ghz Woodcrest dual/dual nodes.
This is yet another example of "fair" comparison. Unlike Qlogic, Mellanox offer a family of products for PCIe servers, and there are multiple MPI versions that support those products. The performance depends on the hardware you pick and the software you use. Why don't you look at http://www.clustermonkey.net//content/view/178/33/? This shows that Mellanox SDR beats Qlogic, even on a latency sensitive applications, and that was before ConnectX. As for the overhead portion, this paper does not compare hardware to hardware overhead, and it is greatly influenced by the MPI software implementation. But who cares what exactly did they measured, right?..... Anyway, it is very reasonable to believe that On-loading architecture has lower CPU overhead than Off-loading one... > > I look forward to showing the same advantage vs ConnectX, > whenever it's actually available. > Thanks for the marketing promotion. ConnectX InfiniBand adapters are here - http://www.clustermonkey.net//content/view/191/1/. This new family of adapters provides 1.2us MPI latency, and full hardware transport Offload among other great features. > -- greg > > (p.s. ggv has issues with the fonts in this pdf, so try xpdf > or (yech) acroread instead.) > > _______________________________________________ > Beowulf mailing list, [email protected] To change your > subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
