[Beowulf] using two separate networks for different data streams

Greg Lindahl lindahl at pathscale.com
Mon Jan 30 01:54:50 EST 2006


On Mon, Jan 30, 2006 at 01:18:22AM -0500, Mark Hahn wrote:

> 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.

Our fast mode is the moral equivalent to sending packets with unusual
ethertypes over Ethernet. That's still Ethernet; the standard allows
for such an extension. IB is similarly extensible.

The Cray XT3 is an example, I think, of a system which sends
non-IB-like packets over an IB physical layer. But I don't think the
details are public and I don't know much about the XT3.

-- greg

_______________________________________________
Beowulf mailing list, Beowulf at beowulf.org
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf



More information about the Beowulf mailing list