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Old   September 3, 2014, 02:15
Default Full acceleration on GPU vs. partial
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Lukasz Miroslaw
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Our previous posts with acceleration of linear part of the flow solver were not promising. The conclusion is that partial acceleration is not the way to go.

This is the reason why we focused on implementing the RANS single-phase flow solver directly on GPU. The results are quite promising:

Motorbike, 6.5M cells, aero flow: simpleFoam:

CPU: 9188 sec.
GPU: 2914 sec.
Acceleration: 3.1x.

See this link for more results.
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Old   September 10, 2014, 10:29
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Lukasz,

This looks promising, but until you support LES/DES and multi-gpu on multiple computers, there are very few people that can make use of it. There aren't a whole lot of people running 7 million cell RANS simulations anymore.
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Old   September 11, 2014, 04:20
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Lukasz Miroslaw
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Thanks Kyle for your honest opinion.
We are already working on multi-GPU.

Which following LES/DES models do you think would be attractive for the community?

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Originally Posted by kyle View Post
Lukasz,

This looks promising, but until you support LES/DES and multi-gpu on multiple computers, there are very few people that can make use of it. There aren't a whole lot of people running 7 million cell RANS simulations anymore.
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Old   September 18, 2014, 10:31
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Personally I use IDDES for automotive external aerodynamics simulations, which I think is pretty common.
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