On 07/06/11 18:28, Steve Kargl wrote: > On Wed, Jul 06, 2011 at 05:29:24PM +0200, O. Hartmann wrote: >> I use SCHED_ULE on all machines, since it is supposed to be performing >> better on multicore boxes, but there are lots of suggestions switching >> back to the old SCHED_4BSD scheduler. >> > If you are using MPI in numerical codes, then you want > to use SCHED_4BSD. I've posted numerous times about ULE > and its very poor performance when using MPI. > > http://lists.freebsd.org/pipermail/freebsd-hackers/2008-October/026375.html > Worth a try, but most of my code I use is OpenMP, not MPI. The post is of 2008, that's three years ago and 9.0 is on the brink to become released ...Received on Wed Jul 06 2011 - 14:38:27 UTC
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