[cfMesh] Decompose Mesh with ptscotch

pchris22 · July 3, 2024, 06:59

Hello everyone,

I'm rather new to OpenFOAM so i will try my best to explain my issue. I successfully programmed the simulation that I want to do. I will have a huge number of simulation so I'm interested to decompose the mesh to parallelise the solving. For that i want to use ptscotch. Doing that I get the following error:

--> FOAM FATAL IO ERROR: (openfoam-2312 patch=240220)
Unknown decompositionMethod type ptscotch

Valid decompositionMethod types :
10(hierarchical kahip manual metis multiLevel none random scotch simple structured)

I understand that the error says that the decomposition type ptscotch is unknown. Does someone have an explanation that it is unknown? Because when I search it online I find the possibility of ptscotch. Is it maybe related to cfmesh?
If someone can help me with that I would be gratefull.

Best Regards,

Christian

dlahaye · July 3, 2024, 12:29

ptscotch is simply not implemented with decomposePar

July 3, 2024, 06:59	Decompose Mesh with ptscotch	#1
pchris22 New Member Join Date: Jul 2024 Posts: 2 Rep Power: 0	Hello everyone, I'm rather new to OpenFOAM so i will try my best to explain my issue. I successfully programmed the simulation that I want to do. I will have a huge number of simulation so I'm interested to decompose the mesh to parallelise the solving. For that i want to use ptscotch. Doing that I get the following error: --> FOAM FATAL IO ERROR: (openfoam-2312 patch=240220) Unknown decompositionMethod type ptscotch Valid decompositionMethod types : 10(hierarchical kahip manual metis multiLevel none random scotch simple structured) I understand that the error says that the decomposition type ptscotch is unknown. Does someone have an explanation that it is unknown? Because when I search it online I find the possibility of ptscotch. Is it maybe related to cfmesh? If someone can help me with that I would be gratefull. Best Regards, Christian

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July 3, 2024, 12:29		#2
dlahaye Senior Member Domenico Lahaye Join Date: Dec 2013 Posts: 770 Blog Entries: 1 Rep Power: 17	ptscotch is simply not implemented with decomposePar