[cfarm-users] peko, please 'nice' your jobs

Peter Korsgaard jacmet at uclibc.org
Mon Mar 26 16:27:45 CEST 2018

>>>>> "Stefan" == Stefan Ring via cfarm-users <cfarm-users at lists.tetaneutral.net> writes:


 > On Mon, Mar 26, 2018 at 3:56 PM, Jonathan Wakely via cfarm-users
 > <cfarm-users at lists.tetaneutral.net> wrote:
 >> I can't remember ever using gcc112 when it wasn't running several jobs
 >> for "peko", all run without nice.
 >> Please remember these are shared machines, and running jobs
 >> back-to-back all day, every day doesn't seem necessary.

 > Unfortunately, nice buys you close to nothing on machines with
 > multiple virtual threads per core (Hyper Threading or SMT), and the
 > POWER machines are heavily multi-threaded. So the only good remedy is
 > to start fewer simultaneous jobs than there are physical cores in a
 > machine.

I've scaled down from make -j16 to -j8.

Bye, Peter Korsgaard

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