[Beowulf] torus versus (fat) tree topologies

Ashley Pittman ashley at quadrics.com
Tue Nov 16 06:08:59 EST 2004

On Tue, 2004-11-16 at 08:50 +0800, xiang wrote:
> Greg, 
> Could you tell me the web address of low-latency fat examples ? 

A shameless plug but I believe we are the lowest latency fat tree
network.  I have seen as little as 1.38 MPI latency although it's very
dependant on node-type.


Here is the top500 page for one of the big systems:



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