[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Condor-users] measuring power of cluster


On Wednesday 11 August 2010 05:04:59 Mag Gam wrote:
> I have a fairy large pool and I want to see how ours stack with to the
> top 500. We have close to 1000 node cluster on weekdays and on
> weekends it almost triples...

With a bit more than 5000 compute cores and a good networking (albeit not 
Infiniband) we scored close to 33 TFlop Linpack vs. more than 50 TFlop peak. 
My take is: If you want to play, you need (a) a very good network (low 
latency, bandwidth is not so much of a problem) and (b) time.

The last part cannot be stressed too much. It took Intel professionals about 
2-3 weeks to get to that score, during that time you cannot use the cluster 
for anything else. Especially, if you only have 3000 nodes available during 
the week-end, this will be a real headache.

So, up to you to decide if it's worth it.


Dr. Carsten Aulbert - Max Planck Institute for Gravitational Physics
Callinstrasse 38, 30167 Hannover, Germany
Phone/Fax: +49 511 762-17185 / -17193
http://www.top500.org/system/9234 | http://www.top500.org/connfam/6
CaCert Assurer | Get free certificates from http://www.cacert.org/