[gmx-users] gigabit scaling, DPPC benchmark
Jason de Joannis
jdejoan at emory.edu
Tue Jun 7 17:21:24 CEST 2005
> Date: Mon, 06 Jun 2005 21:13:36 +0200
> From: David <spoel at xray.bmc.uu.se>
> Subject: Re: [gmx-users] gigabit scaling, DPPC benchmark
> To: Discussion list for GROMACS users <gmx-users at gromacs.org>
> Message-ID: <1118085216.5498.10.camel at localhost.localdomain>
> Content-Type: text/plain
> > Then why does the Xeon2800/1000Gbit system on gromacs.org scale so well?
> > I didn't see any special comments about its network.
> Where do you find that? You don't mean the old scaling benchmarks on 800
> MHz PIII machines?
Not exactly. I am talking about the last line of the 3.0 scaling
benchmarks. For example, the 4 processor job runs at 637 ps/day which
is 124% scaling. By contrast my machine which is quite similar as far
as I can tell, gets only 517 ps/day or 81% scaling. Are those benchmarks
for quad-nodes? Mine are dual-nodes.
> > > It basically means you can not do much about it (except buy SMP machines
> > > with more than two processors).
> > > >
> > > > /Jason
> > > >
> > > --
> > > David.
> > /Jason
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> David van der Spoel, PhD, Assoc. Prof., Molecular Biophysics group,
> Dept. of Cell and Molecular Biology, Uppsala University.
> Husargatan 3, Box 596, 75124 Uppsala, Sweden
> phone: 46 18 471 4205 fax: 46 18 511 755
> spoel at xray.bmc.uu.se spoel at gromacs.org http://xray.bmc.uu.se/~spoel
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