Hello everyone,
currently I am benchmarking the different single copy mechanisms
knem/cma/xpmem on a Xeon E5 V3 machine.
I am using openmpi 1.8.4 with the CMA patch for vader.
While it turns out that xpmem is the clear winner (reproducing Nathan
Hjelm's results) I always ran into a problem at the mpi finalizing step.
At this step, at least one process hangs, and can't be killed anymore.
To get rid of the hanging process, the server has to be rebooted.
The applications finish successfully.
Unfortunately, I can't find any further development of the xpmem module.
Is this bug known to anyone? What kernel versions do you use?
Any help would be appreciated.
Tested kernel versions:
3.11.25-desktop (openSUSE)
3.18.9 (vanilla)
3.19.1 (vanilla)
--
M.Sc. Tobias Klöffel
=======================================================
Interdisciplinary Center for Molecular Materials (ICMM)
and Computer-Chemistry-Center (CCC)
Department Chemie und Pharmazie
Friedrich-Alexander-Universität Erlangen-Nürnberg
Nägelsbachstr. 25
D-91052 Erlangen, Germany
Room: 2.307
Phone: +49 (0) 9131 / 85 - 20421
Fax: +49 (0) 9131 / 85 - 26565
=======================================================
Department of Materials Science and Engineering
Institute I: General Materials Properties
Friedrich-Alexander-Universität Erlangen-Nürnberg
Martensstr. 5, D-91058 Erlangen, Germany
Office 3.40
Phone: (+49) 9131 85 27 -486
http://www.gmp.ww.uni-erlangen.de
E-mail: tobias.kloef...@fau.de
