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[Other] Creating large meshes (>10,000,00) in parallel |
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#1 |
New Member
Join Date: Apr 2012
Location: Ames, IA
Posts: 6
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Fellow members and users of OpenFOAM,
I am having problems creating large meshes (greater than 10,000,000) elements. No surprise I am running out of memory on a single computer. I am looking to create a mesh up to 100,000,000 elements. The domain is simply a unit 1x1x1 cube. Does anyone have a tested procedure for parallel discretization or refinement? Thanks in advance! |
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#2 |
Senior Member
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How can your domain be a 1x1x1 cube?
Have you tried with decomposePar and then running sHM in parallel with mpirun? |
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#3 |
New Member
Join Date: Apr 2012
Location: Ames, IA
Posts: 6
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1x1x1 cube: I am doing a scaling analysis on a cluster to understand how many processors to run different problem sizes. My base case is the incompressible/icoFOAM/cavity tutorial.
The problem I will eventually be solving is airflow within a large building. After the scaling analysis do I... 1. Create a STL file of the domain 2. Use blockMesh for a basic overlapped representation. 3. Use decomposePar to decompose the initial mesh to the number of processors I plan on running the simulation 4. Use snappyHexMesh in parallel to create the actual domain discretization. Thanks for the quick reply. |
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#4 |
Senior Member
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Sorry, I'm missing the point then… The question is…?
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#5 |
Retired Super Moderator
Bruno Santos
Join Date: Mar 2009
Location: Lisbon, Portugal
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Quick answer: see the tutorial "./incompressible/simpleFoam/turbineSiting"
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