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[Other] exceeds capacity of label fatal error, how to recompile with a larger data type?

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Old   April 4, 2017, 01:52
Default exceeds capacity of label fatal error, how to recompile with a larger data type?
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KTG
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Hello Foamers,

I am trying to make a fairly large mesh, and I am getting the error:

exceeds capability of label (2147483647). Please recompile with larger datatype for label.
[40]
[40] From function Foam::globalIndex::globalIndex(Foam::label)
[40] in file meshes/polyMesh/globalMeshData/globalIndex.C at line 86.
[40]
FOAM parallel run exiting

I am guessing that 2147483647 is the largest value of int 32 on the 64 bit cluster I am using, and that the cell index is beyond that (please correct if that is wrong). So my question is, how do I fix this? 160 cores of old hardware overloaded the label in less than 3 hours, so maybe I am interpreting this wrong? On a related note, I am also beyond the largest value for maxGlobalCells in snappyHexMeshDict - if I try to increase it, snappy gives an error that it expected int 32. Int 32 just seems too small - or more likely, I am doing something wrong.

Help!

Thanks
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