[cfMesh] Does cfMesh supports LABEL 64 (integer 64bit) for larger mesh size?

lonelywing · March 29, 2019, 04:22

Dear Foamer,

I have been working on generating large numbers of mesh (over 150 miliion) using cfMesh cartesianMesh utility.

I did have few success in generating for some cases.

Whenever mesh generates large number of polyhedral mesh in the transition region, however, number of edges and vertices exceed 2.1biliion (max. 32bit integer).

I'm aware of the fact that cfMesh v.1.1.2 have announced that it supports OpenFOAM 4.0, which made it possible to install OF with LABEL 64(64bit integer). However, when I install OF4 with LABEL 64, installation of cfMesh fails.

I'd like to generate more meshes (that involves more edges and vertices that can be dealt with 32bit integer) using cfMesh utility.

Does anyone have tried this before and had success with this?

If it is not fully supported yet, is there any way I can get help or contribute to the present version?

Many thanks,

Junshin

nope · August 16, 2019, 04:00

Hi

I know it's a little bit late...
I'm running cfMesh with OF v1812 and OF v1906 with 64bit Labels successfully. 64bit Labels solved an error i got during meshing with cfMesh. Eventhough the final mesh wasn't that big, an intermediate stage seems to lead to an overflow.

FOAM FATAL ERROR: Negative size requested

Cheers, nope

March 29, 2019, 04:22	Does cfMesh supports LABEL 64 (integer 64bit) for larger mesh size?	#1
lonelywing New Member Junshin Park Join Date: Oct 2013 Posts: 6 Rep Power: 13	Dear Foamer, I have been working on generating large numbers of mesh (over 150 miliion) using cfMesh cartesianMesh utility. I did have few success in generating for some cases. Whenever mesh generates large number of polyhedral mesh in the transition region, however, number of edges and vertices exceed 2.1biliion (max. 32bit integer). I'm aware of the fact that cfMesh v.1.1.2 have announced that it supports OpenFOAM 4.0, which made it possible to install OF with LABEL 64(64bit integer). However, when I install OF4 with LABEL 64, installation of cfMesh fails. I'd like to generate more meshes (that involves more edges and vertices that can be dealt with 32bit integer) using cfMesh utility. Does anyone have tried this before and had success with this? If it is not fully supported yet, is there any way I can get help or contribute to the present version? Many thanks, Junshin nope likes this.

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August 16, 2019, 04:00		#2
nope New Member Join Date: Nov 2017 Posts: 11 Rep Power: 9	Hi I know it's a little bit late... I'm running cfMesh with OF v1812 and OF v1906 with 64bit Labels successfully. 64bit Labels solved an error i got during meshing with cfMesh. Eventhough the final mesh wasn't that big, an intermediate stage seems to lead to an overflow. FOAM FATAL ERROR: Negative size requested Cheers, nope