[Nek5000-users] n2to3 mesh size error

[nek5000-users at lists.mcs.anl.gov]

Looks like the boundary conditions in your .rea file are somehow messed up. How do you generate you .rea?

-----Original message-----
> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
> Sent: Tuesday 14th November 2017 4:47
> To: nek5000-users at lists.mcs.anl.gov
> Subject: [Nek5000-users] n2to3 mesh size error
> 
> Hi all,
> 
> I keep running into an error whenever I want to use n2to3 to extrude my mesh from 2 dimensions to 3. My workflow is as follows:
> 
> gmsh .geo file -> gmsh .msh file -> .rea file -> n2to3 > .rea (3D) file.
> 
> Now if the original 2D .rea file obtained from gmsh contains less than 1000 elements, n2to3 fails with the error 
> 
> At line 651 of file n2to3.f (unit = 10, file = msh_test.rea)
> Fortran runtime error: Bad value during integer read
> 
> However, should this not be the case (mesh size > 1000) its all smooth sailing. The trouble is with a mesh of that size my processor and memory requirements quickly blow up.
> 
> Incidentally, genmap fails under almost exactly the same conditions.
> 
> Is there a lower limit to mesh size issue for nek5000 that Im missing here?
> 
> Sincerely,
> -- 
> Amitvikram Dutta
> Graduate Research Assistant
> Fluid Mechanics Research Lab
> University of Waterloo
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