[gmx-users] low latency
ckutzne at gwdg.de
Wed Jan 14 10:40:00 CET 2009
On Jan 13, 2009, at 9:15 PM, ha salem wrote:
> Dear Karsten and gromacs specialists
> I enabled flow control on hp procurve now I want to know how I can
> config low latency on the network ?is it required?
> thank you
There are quite some parameters that affect Ethernet performance. They
be found in the /proc/net/ filesystem, where exactly will depend on
your type of
system. These settings can also be changed with programs like e.g.
Did your performance get better with flow control? I would not look at
usage % but perform a benchmark on 1, 2, 4, ... CPUs and compare the
numbers before and after you make changes. These numbers are far more
reliable because a high CPU usage % does not necessarily mean you have
scaling. You could also compare the md.log files to find out which
mdrun eat up most of the time.
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