[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:
Hi,
> 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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