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[Chareyre <question679153@xxxxxxxxxxxxxxxxxxxxx>]

Question #679153 on Yade changed:
https://answers.launchpad.net/yade/+question/679153

Chareyre proposed the following answer:
Hi,
You need to assign openmp threads to each job if you want them to run in
parallel, by default they take one core each. See batch example for details.

I doubt running 4x3 cores will be very fast though. The OS needs something
to run itself, and there are hardware limitations to.
Bruno


Le mer. 13 mars. 2019 04:52, Cloud <question679153@xxxxxxxxxxxxxxxxxxxxx> a
écrit :

> New question #679153 on Yade:
> https://answers.launchpad.net/yade/+question/679153
>
> Hello guys,
>
> There is a problem that bothers me now. My computer has Intel® Core™
> i7-8700 CPU @ 3.20GHz × 12, I'm trying to make full use of  CPU in batch
> mode. Here is my input in the terminal:
>
> yadedaily-batch -j12 paras.table meizizi.py
>
> Then the terminal reply :
>
> Will run simulation(s) ['meizizi.py'] using `/usr/bin/yadedaily', nice
> value 10, using max 12 cores.
> Will use table `paras.table', with available lines 2, 3, 4, 5.
> ......
>
> but I check it in http://localhost:9080,  the page shows
>
> Pid 14186
> 12 cores available, 4 used + 8 free.
>
> So it doesn't seem to take full advantage of CPU, What is going on here?
>
> Regards,
> Cloud
>
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