[gmx-users] Gromacs on SCI interconnected clusters

Ole W. Saastad ole at scali.no
Fri Nov 2 10:23:05 CET 2001

Gromacs is an application that is strongly dependent on the
MPI and interconnect performance. 

This has been verified on the Gromacs benchmark pages where
the scaling when running on a cluster with ethernet is not 
very good. It is very good when run on a cluster with 
ScaMPI and SCI. The cpu efficiency is over 90% at 16 cpus
when using SCI but only 54% when using ethernet.

Please see the hard facts at :


Ole W. Saastad, Dr.Scient.
Scali AS P.O.Box 70 Bogerud 0621 Oslo NORWAY 
Tel:+47 22 62 89 68(dir) mailto:ole at scali.no http://www.scali.com 
ScaMPI: bandwidth .gt. 300 MB/sec. latency .lt. 4 us.

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