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[Anton Gladky <question218781@xxxxxxxxxxxxxxxxxxxxx>]

Question #218781 on Yade changed:
https://answers.launchpad.net/yade/+question/218781

    Status: Open => Answered

Anton Gladky proposed the following answer:
Hi,

good question, I never payed attention on this --cores option. According
to this string [1], it seems, it does not matter, whether you use "cores" or
"threads". "cores" variable has higher priority.

I think, you can ignore this --cores option, as it is more important for
yade-batch binary, where you can split the given number of cores
between several tasks.

Anton

[1] https://github.com/yade/trunk/blob/master/core/main/main.py.in#L71

2013/1/9 Eugen Kubowsky <question218781@xxxxxxxxxxxxxxxxxxxxx>:
> New question #218781 on Yade:
> https://answers.launchpad.net/yade/+question/218781
>
> Hi,
> during my latest performance tests I encountered a situation where I started two different simulations at the same time. each of it was start with -j2 option. So it yade should use 2 cores for each simulation. after the simulation ran for about 2 weeks I recognized that only two cores in total where really used.
> Going through the other possible starting options of Yade I saw --cores. What exactly does it do and what is the difference to -j?
>
> Thank you guys, Eugen
>
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