AW: NAMD crashes with OpenMPI/OpenMX

From: Norman Geist (norman.geist_at_uni-greifswald.de)
Date: Mon Jun 20 2011 - 00:36:54 CDT

Have you tried tcp congestion control highspeed?

Mit freundlichen Grüßen

Norman Geist.

-----Ursprüngliche Nachricht-----
Von: owner-namd-l_at_ks.uiuc.edu [mailto:owner-namd-l_at_ks.uiuc.edu] Im Auftrag
von Thomas Albers
Gesendet: Montag, 20. Juni 2011 04:33
An: namd-l_at_ks.uiuc.edu
Betreff: Re: namd-l: NAMD crashes with OpenMPI/OpenMX

Hello!

> Do you see an actual performance improvement from Open-MX?

The odd thing is - we do not. With TCP networking time/step remains
fairly constant throughout the simulation, but with Open-MX (through
OpenMPI) it varies by a factor of 3. Something else is wrong here,
and I can't quite see what.

Thomas

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