[Beowulf] Cheap SDR IB

Joe Landman landman at scalableinformatics.com
Fri Feb 1 11:33:12 PST 2008

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 


> 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.

Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: landman at scalableinformatics.com
web  : http://www.scalableinformatics.com
phone: +1 734 786 8423
fax  : +1 866 888 3112
cell : +1 734 612 4615

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