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Openfoam Hyperthreading - disable?

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Old   August 1, 2022, 16:23
Default Openfoam Hyperthreading - disable?
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jhs
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Hello,

I got 12 CPU cores with hyperthreading (24c). Howerever I cannot get to 100% CPU usage as I get errors if I put numberOfSubdomains to 24. Can sb help me out? I tried different decomposition methods, but no luck.

Apart from this, here it says hyperthreading doesn't bring a benifit anyways (OpenFOAM + Hyperthreading)

Is there a way to prevent hyperthreading using openfoam?


decomposeParDict:

Code:
numberOfSubdomains 12;

method          hierarchical;
// method          ptscotch;

coeffs
{
    n           (6 2 1);
}
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Old   August 1, 2022, 16:26
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Follow up: Is there a way to auto detect/set the number of cores?
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Old   August 1, 2022, 16:58
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disregard this reply: made a wrong statement here
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