[pymvpa] Time for single permutation varies between a few seconds and several minutes

Yaroslav Halchenko debian at onerussian.com
Wed Apr 8 13:02:01 UTC 2015

On Wed, 08 Apr 2015, J.A. Etzel wrote:

> I don't know if it could be the case here, but I also run large
> (non-pymvpa) memory jobs on a large multiple-cluster computer, and
> the run time of equivalent jobs sometimes varies quite a bit. The
> cluster
> administrator said that the cause is the overall machine load: if the
> machine is running at near-full capacity it has to slow or pause
> operations to avoid overheating, and so my jobs take longer to finish.

yeap -- if there is more processes than available cpu/cores -- it can
get very notably slow.

Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Research Scientist,            Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834                       Fax: +1 (603) 646-1419
WWW:   http://www.linkedin.com/in/yarik        

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