HI MArtin, I am using here the infiniband having speed more than 10 gbps..Can you suggest some option to scale better in this case.
With Thanks, Vivek 2008/11/11 Martin Höfling <[EMAIL PROTECTED]> > Am Dienstag 11 November 2008 12:06:06 schrieb vivek sharma: > > > > I have also tried scaling gromacs for a number of nodes ....but was not > > able to optimize it beyond 20 processor..on 20 nodes i.e. 1 processor per > > As mentioned before, performance strongly depends on the type of > interconnect > you're using between your processes. Shared Memory, Ethernet, Infiniband, > NumaLink, whatever... > > I assume you're using ethernet (100/1000 MBit?), you can tune here to some > extend as described in: > > Kutzner, C.; Spoel, D. V. D.; Fechner, M.; Lindahl, E.; Schmitt, U. W.; > Groot, > B. L. D. & Grubmüller, H. Speeding up parallel GROMACS on high-latency > networks Journal of Computational Chemistry, 2007 > > ...but be aware that principal limitations of ethernet remain. To come > around > this, you might consider to invest in the interconnect. If you can come out > with <16 cores, shared memory nodes will give you the "biggest bang for the > buck". > > Best > Martin > _______________________________________________ > gmx-users mailing list gmx-users@gromacs.org > http://www.gromacs.org/mailman/listinfo/gmx-users > Please search the archive at http://www.gromacs.org/search before posting! > Please don't post (un)subscribe requests to the list. Use the > www interface or send it to [EMAIL PROTECTED] > Can't post? Read http://www.gromacs.org/mailing_lists/users.php >
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