bad setSize while building up a too large mesh ?

Orgogozo · December 17, 2012, 08:51

Dear foamers,

I am trying to build up a mesh of about 600 millions of cells (3396*3396*50) and when I run blockMesh I get the following error :

"
Creating cells
Creating points with scale 1

--> FOAM FATAL ERROR:
bad set size -835122496

From function List<T>::setSize(const label)
in file /usr/local/OpenFoam/OpenFOAM-2.0.x/src/OpenFOAM/lnInclude/List.C at line 322.

FOAM aborting
"

The procedure I use work for the building of a four time smaller mesh, of about 150 millions of cells (1698*1698*50), but give the error above for the larger case.

Does anyone have an idea of what should be done to solve this problem ? Thanks by advance for any help.

Laurent

jans · April 12, 2013, 14:26

Hi Laurent,
I just encountered the same error. Were you able to overcome this problem?

My guess is that this is a case of overflow in a variable of type int. For example, for large meshes, the variables holding the number of points, faces, cells etc are susceptible to overflow. The solution may be to switch to "long int" when this happens.

@ OpenFOAM developers: Should this be submitted as a bug report?

Thanks
Anirban

December 17, 2012, 08:51	bad setSize while building up a too large mesh ?	#1
Orgogozo New Member Laurent Orgogozo Join Date: Mar 2011 Location: Toulouse Posts: 8 Rep Power: 4	Dear foamers, I am trying to build up a mesh of about 600 millions of cells (3396339650) and when I run blockMesh I get the following error : " Creating cells Creating points with scale 1 --> FOAM FATAL ERROR: bad set size -835122496 From function List<T>::setSize(const label) in file /usr/local/OpenFoam/OpenFOAM-2.0.x/src/OpenFOAM/lnInclude/List.C at line 322. FOAM aborting " The procedure I use work for the building of a four time smaller mesh, of about 150 millions of cells (1698169850), but give the error above for the larger case. Does anyone have an idea of what should be done to solve this problem ? Thanks by advance for any help. Laurent

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April 12, 2013, 14:26		#2
jans New Member Anirban Jana Join Date: Apr 2010 Location: Pittsburgh, PA, USA Posts: 17 Rep Power: 5	Hi Laurent, I just encountered the same error. Were you able to overcome this problem? My guess is that this is a case of overflow in a variable of type int. For example, for large meshes, the variables holding the number of points, faces, cells etc are susceptible to overflow. The solution may be to switch to "long int" when this happens. @ OpenFOAM developers: Should this be submitted as a bug report? Thanks Anirban