On Sun, Feb 22, 2009 at 11:53 PM, Nifty Tom Mitchell <niftyo...@niftyegg.com> wrote: > > In general a landed on motherboard chip set solution can be less expensive > than a MB+card solution. The lack of a PCIe connector and riser can > improve PCIe signal quality. The IB chip set is close to the 4x connector > which is a good thing. >
Is there really that much effect from a riser or other connector? The physical connection, bus length and frequency in use seems to hint to me that there would be little if any loss or degradation in the signal. However I've never investigated such things in depth. Have you or anyone else seen performance hits because of such hardware configuration? Cheers, Lucas _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
