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[snappyHexMesh] snappyHexMesh parallel speedup? |
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August 19, 2014, 18:01 |
snappyHexMesh parallel speedup?
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#1 |
Senior Member
Pete Bachant
Join Date: Jun 2012
Location: Boston, MA
Posts: 173
Rep Power: 13 |
Does anyone know of any case studies for speeding up snappy in parallel? I am getting OpenMPI errors when I try to run on more than one node and I was wondering if it's worth it to spend significant time troubleshooting.
UPDATE: Looks like I can get it to run on multiple nodes, so long as I don't use every core on each. Speedup seems pretty good so far. Went from ~5 ks on 6 processes to ~1 ks on 24 processes for a mesh ending with 8M cells. Last edited by pbachant; August 20, 2014 at 14:06. Reason: Add update |
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September 11, 2014, 11:42 |
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#2 |
New Member
Mehid
Join Date: Nov 2013
Location: Tehran-Iran
Posts: 22
Rep Power: 0 |
Hi Pete,
I use these steps and of course get a faster meshing process with SHM. 1. decomposePar 2. foamJob -p -s snappyHexMesh 3. reconstructParMesh -mergeTol 1e-06 - latestTime Good Luck |
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