[Beowulf] Good IB network performance when using 7 cores, poor performance on all 8?

Chris Samuel samuel at unimelb.edu.au
Sat Apr 26 19:36:32 PDT 2014

On Thu, 24 Apr 2014 12:24:23 PM Joe Landman wrote:

> Yeah, that was the other thing I'd forgotten about.  Might want to tweak 
> Cstates to C1.  It could be going over-power and throttling.  Turn of 
> ASPM and other (fairly painful) things.

This Mellanox document has some useful information on that (and other settings
that can affect performance).


 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

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