LES very slow

From: Siri Søndergaard (siris2501_at_gmail.com)
Date: Mon Feb 25 2013 - 18:00:02 CST


I'm trying to run LES on a system of ~30.000 atoms. I'm using 20 copies of
each of two dyes attached to DNA. The problem is when I extend the
simulation to more than one cpu the scaling does not increase accordingly.
An increase from one to 12 cpus only gives a decrease in simulation time
from ~9 days to ~4 days pr. ns. Does anybody know how to solve this?

Best regards, Siri

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