[Beowulf] SC|05: will 10Ge beat IB?
hahn at physics.mcmaster.ca
Tue Nov 22 10:42:59 EST 2005
> Chelsio's T210-CX4 TOE NIC has been around for about a year. Like the
> Myricom product it utilizes the 10GBase-CX standard. It essentially
> pushes 10GbE over InfiniBand cabling directly using the XAUI interface
> (normally used for on-PCB communication on 10G devices).
indeed, it's CX4 that I was seeing all over the place. yes, it's a
pretty heavy/thick cable, and not cheap, and limited to ~15M.
but for clusters, 15M is pretty workable.
> relatively cheap UTP cabling and are limited to 50ft per link. It seems
> to me to be a stopgap standard that will be overtaken by 10Gbase-T in a
> few years time.
is there really a promise of running 10G on something like cat5?
> I don't have a quote on the pricing but it should be competitive with
my understanding is that an IB cable has some active equalization
built into the connectors, and that this is the only difference between
it and eth-style CX4. I also understand that putting the equalization
on the cable size have been a design mistake, since it means that distortion
caused by the connector itslef is not corrected...
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