Yes, that has been true for GROMACS for a few years. Low-latency communication is essential if you want a whole MD step to happen in around 1ms wall time.
Mark On Nov 5, 2013 11:24 PM, "Dwey Kauffman" <mpi...@gmail.com> wrote: > Hi Szilard, > > Thanks. > > >From Timo's benchmark, > 1 node 142 ns/day > 2 nodes FDR14 218 ns/day > 4 nodes FDR14 257 ns/day > 8 nodes FDR14 326 ns/day > > > It looks like a infiniband network is "required" in order to scale up when > running a task across nodes. Is it correct ? > > > Dwey > > > -- > View this message in context: > http://gromacs.5086.x6.nabble.com/Hardware-for-best-gromacs-performance-tp5012124p5012280.html > Sent from the GROMACS Users Forum mailing list archive at Nabble.com. > -- > gmx-users mailing list gmx-users@gromacs.org > http://lists.gromacs.org/mailman/listinfo/gmx-users > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/Search before posting! > * Please don't post (un)subscribe requests to the list. Use the > www interface or send it to gmx-users-requ...@gromacs.org. > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > -- gmx-users mailing list gmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/Search before posting! * Please don't post (un)subscribe requests to the list. Use the www interface or send it to gmx-users-requ...@gromacs.org. * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists