[Beowulf] bizarre scaling behavior on a Nehalem

Craig Tierney Craig.Tierney at noaa.gov
Tue Aug 11 16:03:51 EDT 2009


Rahul Nabar wrote:
> On Tue, Aug 11, 2009 at 12:40 PM, Craig Tierney<Craig.Tierney at noaa.gov> wrote:
>> What are you doing to ensure that you have both memory and processor
>> affinity enabled?
>>
> 
> All I was using now was the flag:
> 
> --mca mpi_paffinity_alone 1
> 
> Is there anything else I ought to be doing as well?
> 

That should be adequate.

Craig


-- 
Craig Tierney (craig.tierney at noaa.gov)
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