[Beowulf] Again about NUMA (numactl and taskset)

Chris Samuel csamuel at vpac.org
Tue Jun 24 19:23:08 EDT 2008


----- "Håkon Bugge" <Hakon.Bugge at scali.com> wrote:

> IMHO, the MPI should virtualize these resources 
> and relieve the end-user/application programmer 
> from the burden.

IMHO the resource manager (Torque, SGE, LSF, etc) should
be setting up cpusets for the jobs based on what the
scheduler has told it to use and the MPI shouldn't
get a choice in the matter. :-)

Also helps when newbies run OpenMP codes thinking they're
single CPU codes and get 3 or 4 on the same 8 CPU node.

cheers,
Chris
-- 
Christopher Samuel - (03) 9925 4751 - Systems Manager
 The Victorian Partnership for Advanced Computing
 P.O. Box 201, Carlton South, VIC 3053, Australia
VPAC is a not-for-profit Registered Research Agency

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