[Beowulf] AMD 8 cores vs 12 cores CPUs and Infiniband

Gilad Shainer Shainer at Mellanox.com
Wed Mar 30 17:51:44 EDT 2011


> > well, they've often bragged about message rates - I'm not sure how
> relate
> > that is to QP creation.
> 
> They are two separate issues. PSM's equivalent of a QP is much
> lighter-weight than the IB standard QP. With QLogic cards, if you are
> talking to a lot of different QPs, your performance doesn't degrade
> like it does with traditional IB cards.
> 
> It's yet another thing which isn't well measured by 2-core
> microbenchmarks.


The performance does not degrade with standard IB solutions. 

Gilad
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