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Parallel meshing

Posted by Kon G at October 15. 2018

Hello to everyone,

 

Does anyone know how to meshing a 3d geometry in parallel or how to significantly reducing the computational time?


Thank you

GK

Re: Parallel meshing

Posted by Saint Michael at October 15. 2018

Hi

AFAIK In SALOME there is no way to speed the meshing up.

St.Michael

Re: Parallel meshing

Posted by Christophe Bourcier at October 15. 2018

Hi,

MeshGems CADSurf  is multithreaded. 4 threads are used by default. A licence from DISTENE is needed.

Christophe

Re: Parallel meshing

Posted by Kon G at October 16. 2018

Hi,

Thank you both for your reply. Christophe, thank you for your suggestion but  I would prefer to use Salome as it is an open-source program. If you know a better licence-free program for CAD or Meshing which has the ability of scripting additionally, I would be grateful to know it. 

 

Thank you

GK 

Re: Parallel meshing

Posted by Sergio Pluchinsky at October 17. 2018
Have you tried Netgen? As far as I know it has scripting possibilities

Re: Parallel meshing

Posted by Adam Brown at November 10. 2018

Hi GK,

I have also looked into improving meshing performance in Salome, and the only parallel meshers that I can find for Salome are commercial such as those from DISTENE.

I recently created a mesh of 145M cells using the NETGEN mesher in Salome. This took around 4 days to complete on my workstation.

It also required a RAM upgrade beyond the 32GB I had to avoid disk swapping . I can't remember peak memory usage but the current 128GB of RAM was sufficient to complete the meshing. At a guess, the meshing operation may have used around 50-60GB of memory at peak.

You have a couple of options as i see it:

1. Contact DISTENE for a commercial licence, they offer a trial - perhaps they might offer a low-cost licence to Salome users for personal/academic use - (how about it Distene?)

2. Faster CPU and RAM ! - Try to get more out of that single thread!

Bon chance!

 

 

 

 

 

 

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