1) The results you reference are rather old. Does this reflect your hardware?
2) To support Jumbo Frames you need both NICs and a switch that support them. 3) It is possible to achieve wire speed from GigE, you need something other then 32 bit PCI connections, however. (PCIe, PCI-X) 4) While Jumbo Frames can help NFS, the effect on MPI can vary by application. Have you run any tests to see exactly what your network performance is? (i.e. Netpipe) You may find these articles helpful: http://www.clustermonkey.net//content/view/38/34/ http://www.clustermonkey.net//content/view/39/34/ -- Doug > hi all, > > new to this list, so don't know if this is offtopic. > > i'd like to know experiences about MPI performance gain with jumbo frames. > i > manage a beowulf cluster (42 athlon xp, gentoo linux) with gigabit > ethernet > where fluent, openfoam and other mpi apps are run. > > with NFS i'm sure wich kind of gain i would have, but with MPI apps i'm > worried about after seeing this page > http://www.scl.ameslab.gov/Projects/IBMCluster/Benchmarks.html > > regards > > > > _______________________________________________ > Beowulf mailing list, [email protected] > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf > > !DSPAM:466d3377130762071360113! > -- Doug _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
