[Wien] CPU usage

[Oleg Rubel]

In case this is an MPI job, the problem could be related to CPU affinity.
We wad to deal with that while running MPI jobs under MVAPICH2. The
solution was

setenv MV2_ENABLE_AFFINITY 0


Oleg


On Tue, Mar 11, 2014 at 3:26 PM, Laurence Marks <L-marks at northwestern.edu>
wrote:
>
> OMP_NUM_THREADS is only for openmp, not for mkl (I assume you are
> using the Intel mkl). If you really need to change this look at the
> appropriate MKL variables (in the documentation) for whatever version
> you have.
>
> On Tue, Mar 11, 2014 at 5:10 AM, Salman Zarrini
> <salman.zarrini at tu-darmstadt.de> wrote:
> >
> > +++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
> > Dear Wien2k user,
> >
> > I was wondering why CPU usage in my machine oscillates around 200 in
> > lapw1&2, although, The "OMP_NUM_THREADS" equals to 1 in my .bashrc
> > (export OMP_NUM_THREADS=1)?
> >
> > P.S."setenv USE_REMOTE 0" in the parallel_options.
> >
> > Cheers,
> >
> > Salman
> >
> > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> >
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>
>
>
> --
> Professor Laurence Marks
> Department of Materials Science and Engineering
> Northwestern University
> www.numis.northwestern.edu 1-847-491-3996
> "Research is to see what everybody else has seen, and to think what
> nobody else has thought"
> Albert Szent-Gyorgi
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