[Beowulf] Cheap SDR IB

[Joe Landman]

Brian Oborn wrote:

> A quick side question. Is it possible to use IB as a cross-over with no 
> switch? If I had just 2 fat nodes could I connect the HCAs directly to 

Yes.

> each other and avoid the switch costs? Could this be extended to ring or 
> hypercube topologies?

Yeah ... but a switch rapidly makes sense.  One link going down would 
"quench" your ring ala FDDI.


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Joseph Landman, Ph.D
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