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[Robert Caulk <question681609@xxxxxxxxxxxxxxxxxxxxx>]

Question #681609 on Yade changed:
https://answers.launchpad.net/yade/+question/681609

    Status: Open => Answered

Robert Caulk proposed the following answer:
Hyperthreading *generally* does not improve or hinder performance on
single Linux workstations [1]. Some authors tested the effect of
hyperthreading on an OpenMP (shared memory) molecular dynamics code
(similar to Yade) and found that hyperthreading slightly improved
performance [2]. However, the same authors found that applications using
a distributed memory model (MPI) exhibted significantly degraded
performance when hyperthreading was active. So if you are running Yade
normally with OpenMP then I would say you won't see much of a difference
with hyperthreading on or off.

[1]https://www.pugetsystems.com/labs/hpc/Hyper-Threading-may-be-Killing-your-Parallel-Performance-578/
[2]https://pdfs.semanticscholar.org/44e2/8882125c8960788564563363ba35ead9d4f0.pdf

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