> > Thanks a lot for the clarification. Do you know if this empirical tests > has been published somehow/somewhere?
I think it was published in very early OSU/MVAPICH related papers. Regards, P. > > cheers, Simone > >> >> On May 7, 2012, at 9:25 AM, Simone Pellegrini wrote: >> >>> Hello, >>> I have one of those 1M dollar questions I guess, but why the eager limit >>> threshold for Infiniband is set to 12KB by default in OpenMPI? I would like >>> to know where this value comes from. I am not wondering whether this is a >>> good setting for this parameter, but just why this is considered to be a >>> good trade-off for all Infiniband clusters. What I would like to know at >>> the end of the story is whether this is an empirical value or if there are >>> architecture characteristics of IB which make this value come out of pen >>> and paper work (any pointer would be appreciated). >>> >>> thanks in advance for the reply. >>> >>> regards, >>> Simone P. >>> >>> >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> http://www.open-mpi.org/mailman/listinfo.cgi/users >> >> > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
