[Getdp] some warning message

[Christophe Geuzaine]

Lin Ji wrote:
> Dear Christophe,
>      I got the following warning message when I postprocess the solution
> to the elastic wave equation to generate the timetable data. Can you tell
> me what it means? 

It's not a big deal: you're probably trying to evaluate a quantity
outside the mesh, or on an element whose dimension is smaller than the
dimension of the problem you're solving (e.g. on a surface element for a
3D problem). You'll just end up with 0 as the value at that evaluation
point.

Note that you can try to force the dimension in the search algorithm by
adding "Dimension 3" (in 3D), "Dimension 2" (in 2D), etc., to the
options of the PostOperation. This should eliminate the "false positives".

Cheers,

Christophe

> Solving the elastic wave equation seems to be fine. It
> converges at each time step. Thanks
> 
> --- output  ----
> /personal/research/proj_rep/wave3D-EL (4) ../../getdp-0.86.0/getdp wave
> -pos -msh box3.msh
> Loading   : Problem definition 'wave.pro'
> Loading   : Problem definition 'func3.pro'
> Loading   : Problem definition 'order1.pro'
> Info      : Available PostOperations
> (1) u_msh
> (2) u_ttable
> Choice: 2
> Info      : Selected Resolution 'Wave'
> Loading   : Geometric data 'box3.msh'
> Info      : System 'A' : Real
> P r e - P r o c e s s i n g . . .
> Loading   : Pre-Processing data 'wave.pre'
> Resources : cpu 2.200000 s / mem 0 kb
> E n d   P r e - P r o c e s s i n g
> P o s t - P r o c e s s i n g . . .
> Loading   : Processing data 'wave.res'
> Info      : Selected PostProcessing 'Wave'
> Info      : Selected Mesh 'box3.msh'
> Operation : PostOperation 1/1 
>           > 'u_ttable.pos'
> Info      : Initializing rapid search grid 20x20x20
> Warning   : Zero determinant in 'xyz2uvwInAnElement'
> Warning   : Maximum number of iterations exceeded in xyz2uvwInAnElement
> Warning   : Zero determinant in 'xyz2uvwInAnElement'
> Resources : cpu 208.160000 s / mem 0 kb
> E n d   P o s t - P r o c e s s i n g
> E n d
> 
> Lin Ji
> Dept. of Math., Amos Eaton
> Rensselaer Polytechnic Institute
> 110 8th Street
> Troy, New York 12180-3590
> 
> Phone: 518-276,8377 (work)
> 
> _______________________________________________
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> http://www.geuz.org/mailman/listinfo/getdp
> 
> 

-- 
Christophe A. Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org