|August 19, 2014, 18:01||
snappyHexMesh parallel speedup?
Join Date: Jun 2012
Location: NH, USA
Posts: 161Rep Power: 6
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.
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
|September 11, 2014, 11:42||
Join Date: Nov 2013
Posts: 22Rep Power: 5
I use these steps and of course get a faster meshing process with SHM.
2. foamJob -p -s snappyHexMesh
3. reconstructParMesh -mergeTol 1e-06 - latestTime
|Thread||Thread Starter||Forum||Replies||Last Post|
|SnappyHexMesh in Parallel problem||swifty||OpenFOAM Native Meshers: snappyHexMesh and Others||10||November 6, 2015 05:40|
|simpleFoam parallel||AndrewMortimer||OpenFOAM Running, Solving & CFD||12||August 7, 2015 18:45|
|Superlinear speedup in OpenFOAM 13||msrinath80||OpenFOAM Running, Solving & CFD||18||March 3, 2015 06:36|
|snappyHexMesh in parallel||shailesh.nitk||OpenFOAM Native Meshers: snappyHexMesh and Others||18||January 6, 2014 07:13|
|SnappyHexMesh OF-1.6-ext crashes on a parallel run||norman1981||OpenFOAM Bugs||5||December 7, 2011 13:48|