[Beowulf] torus versus (fat) tree topologies

[Greg Lindahl]

On Mon, Nov 08, 2004 at 11:45:12PM -0500, Chris Sideroff wrote:

>   I have had the luxury of testing an SCI 2D torus cluster and found 
> latency performance to be exceptional.

Right. So is that a feature of the NIC, or a feature of the torus
instead of a fat tree/CLOS/CBB network? Answer: the NIC.

There are several examples of low-latency fat tree/CLOS/CBB networks.

-- greg