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 ...
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