[gmx-users] gigabit scaling, DPPC benchmark

[David van der Spoel]

On Tue, 7 Jun 2005, Jason de Joannis wrote:
>>
>> > 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.
Aha, I wasn't aware of these benchmarks.
These are most likely dual nodes.

Did you use -shuffle -sort?

>>
>> >
>> > > It basically means you can not do much about it (except buy SMP machines
>> > > with more than two processors).
>> > > >
>> > > >   /Jason
>> > > >
>> > > --
>> > > David.
>> >
>> > /Jason
>> > _______________________________________________
>> > gmx-users mailing list
>> > gmx-users at gromacs.org
>> > http://www.gromacs.org/mailman/listinfo/gmx-users
>> > Please don't post (un)subscribe requests to the list. Use the
>> > www interface or send it to gmx-users-request at gromacs.org.
>> --
>> David.
>> ________________________________________________________________________
>> 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
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>>
>
>_______________________________________________
>gmx-users mailing list
>gmx-users at gromacs.org
>http://www.gromacs.org/mailman/listinfo/gmx-users
>Please don't post (un)subscribe requests to the list. Use the
>www interface or send it to gmx-users-request at gromacs.org.
>

-- 
David.
________________________________________________________________________
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
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++