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OpenFOAM or foam-extend can't benefit from Hyper-Threading(like in intel CPUs)? |
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November 18, 2015, 01:42 |
OpenFOAM or foam-extend can't benefit from Hyper-Threading(like in intel CPUs)?
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#1 |
Member
ALLEN
Join Date: Aug 2014
Posts: 32
Rep Power: 11 |
Hello ,Foamers
I recently bought a workstation which I planned to do some small cases(like 20 processors/job, and two jobs can run at the same time). The workstation is DELL T7810 and it has 20 physical cores, and I was told that it can be expanded to 40 cores if neccessary. BUT! recently I tried to do the efficiency study with OpenFOAM and foam-extend for my new solver, it seems that a single job does its best when using 15-18 processors, and the single job with 20 processors costs much longer time. AND two jobs (like 18 processors) run at the same time will suffer much much more than expected. So I searched the thread and find it was told foam does not support Hyper-Threading, which make me quite depressed. See this http://www.cfd-online.com/Forums/ope...threading.html Has anyone tried to solve this problem? or does it have no solutions at all? Thanks if anyone can comment on this, if foam really does not support this, it still saves me a lot of time on trying this. by Allen |
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November 18, 2015, 02:17 |
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#2 | |
Senior Member
Anton Kidess
Join Date: May 2009
Location: Germany
Posts: 1,377
Rep Power: 30 |
Quote:
You can find more on Google (perhaps also newer information).
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*On twitter @akidTwit *Spend as much time formulating your questions as you expect people to spend on their answer. |
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