|December 24, 2012, 21:53||
scotch error on motorbike on 16p
Join Date: Dec 2012
Posts: 23Rep Power: 4
I received the following error from scotch-5.1.11 when running snappyHexMesh using 16 processors on the incompressible/pisoFoam/les/motorBike tutorial. The 8p case ran fine out-of-the-box.
"dgraphFoldComm: internal error (3)"
This error emanates from line 307 of ThirdParty-2.1.x/scotch_5.1.11/src/libscotch/dgraph_fold_comm.c
I reviewed the code from newer versions of scotch and found significant changes between 5.1.11 and 5.1.12 for this same file. I installed scotch-5.1.12b and sure enough, snappyHexMesh ran fine on 16p. I reran the 8p case to see if the new scotch changes the results significantly. The mesh started to diverge after a few iterations, but the final drag coefficients agreed within the first decimal place. Close enough for me.
I also tried the scotch-6.0.0 release, but snappyHexMesh failed at run time with an unresolved symbol.
Hope this helps.
|December 27, 2012, 07:01||
Join Date: Mar 2009
Location: Lisbon, Portugal
Blog Entries: 34Rep Power: 92
Greetings Dan and welcome to the forum!
Many thanks for sharing this information! Now I understand better why this bug report was made a year ago: http://www.openfoam.org/mantisbt/view.php?id=355
Hopefully in the next major release of OpenFOAM, they'll update the Scotch library version.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Trying to understand the motorBike tutorial||Andyjoe||OpenFOAM Native Meshers: snappyHexMesh and Others||10||August 10, 2014 16:57|
|Editing the motorBike case, loading diffirent .stl||btgyd||OpenFOAM Native Meshers: snappyHexMesh and Others||1||September 26, 2011 17:24|
|decomposePar with scotch exits with : ERROR: graphCheck: duplicate arc||ancsa||OpenFOAM||3||July 11, 2011 05:02|
|Problem with Scotch in 1.7.x?||dancfd||OpenFOAM Running, Solving & CFD||0||June 15, 2011 21:52|
|motorBike tutorial and Scaling - New geometry used, scaled and now large velocity!!!||scott||OpenFOAM||1||July 29, 2010 04:09|