Hi, you could try to manually set the number of PME nodes with -npme in 5.1. Does that reproduce the 5.0 performance?
Carsten > On 07 Feb 2016, at 19:57, Johannes Wagner <[email protected]> wrote: > > hey guys, > came across an issue with pp/pme ratio difference from 5.0 to 5.1. For a > system running on 2 nodes with a pp/pme ratio of 80:16 on 5.0, the same thing > starts with 72:24 on gromacs 5.1. The 5.1 run has a much higher load > imbalance and is hence slower. Are there known changes from 5.0 to 5.1 in the > pp/pme ratio that cause this? > > cheers, johannes > > -- > Gromacs Users mailing list > > * Please search the archive at > http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! > > * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists > > * For (un)subscribe requests visit > https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a > mail to [email protected]. -- Gromacs Users mailing list * Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting! * Can't post? Read http://www.gromacs.org/Support/Mailing_Lists * For (un)subscribe requests visit https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a mail to [email protected].
