[Beowulf] evaluating FLOPS capacity of our cluster

Greg Lindahl lindahl at pbm.com
Mon May 11 16:32:43 EDT 2009


On Mon, May 11, 2009 at 02:30:31PM -0400, Mark Hahn wrote:

> 80 is fairly high, and generally requires a high-bw, low-lat net.
> gigabit, for instance, is normally noticably lower, often not much  
> better than 50%.  but yes, top500 linpack is basically just
> interconnect factor * peak, and so unlike real programs...

Don't forget that it depends significantly on memory size.

-- greg



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