Hi Doug, I have heard of Open-MX before, do you need special hardware for that? We are currently using one GB network here on the cluster (for everything: NFS, MPI...) and I would like to increase the performance for the parallel codes I am using (NWChem, cp2k, GAMESS) without dishing out too much money for IB or Myrinet as the cluster is too small for them (22 nodes right now).
All the best Jörg On Thursday 10 December 2009 13:50:51 beowulf-requ...@beowulf.org wrote: > Date: Thu, 10 Dec 2009 08:45:30 -0500 (EST) > From: "Douglas Eadline" <deadl...@eadline.org> > Subject: Re: [Beowulf] scalability > To: "amjad ali" <amja...@gmail.com> > Cc: Beowulf Mailing List <beowulf@beowulf.org> > Message-ID: <51346.192.168.1.1.1260452730.squir...@mail.eadline.org> > Content-Type: text/plain;charset=iso-8859-1 > > > The performance of GigE can vary widely based on several > issues: > > - chipset > - driver > - driver settings (interrupt coalescing etc.) > - switch performance under load > - switch manufacturer > > A well tuned GigE network is never as good as > IB or Myrinet, but it can work well for some codes. > You can also try using Open-MX instead of TCP > for MPI communications. > > -- > Doug -- ************************************************************* Jörg Saßmannshausen Research Fellow University of Strathclyde Department of Pure and Applied Chemistry 295 Cathedral St. Glasgow G1 1XL email: jorg.sassmannshau...@strath.ac.uk web: http://sassy.formativ.net Please avoid sending me Word or PowerPoint attachments. See http://www.gnu.org/philosophy/no-word-attachments.html _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
