[petsc-users] DMPlex higher order elements

[Boyce Griffith]

> On Aug 24, 2016, at 11:02 AM, Matthew Knepley <knepley at gmail.com> wrote:
> 
>> On Wed, Aug 24, 2016 at 12:57 AM, Andrew Ho <andrewh0 at uw.edu> wrote:
>> I created an unstructured tri6 mesh in Cubit and am trying to read it into PETSc using DMPlexCreateFromFile. However, when I do PETSc gives me an error that it doesn't support this type of element.
> 
> Yes, I do not support that since I think its a crazy way to talk about things. All the topological information is in the Tri3 mesh, and
> Cubit has no business telling me about the function space.

Do you support / plan to support curved elements?

>    Matt
>  
>> I know my PETSc install has Exodus II support because by giving a different Exodus mesh file with Tri3 elements works just fine. I've attached the Exodus mesh generated by Cubit. I can open up the mesh file in Paraview just fine and it does appear to be valid (it has 2 elements approximating a quarter circle wedge).
>> 
>> Here's the error message:
>> 
>>> [0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------                                                                             
>>> [0]PETSC ERROR: Argument out of range
>>> [0]PETSC ERROR: Cone size 6 not supported for dimension 2
>>> [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting.
>>> [0]PETSC ERROR: Petsc Development GIT revision: v3.7.3-1257-ge04de0c  GIT Date: 2016-08-24 00:14:37 -0500                                                                                      
>>> [0]PETSC ERROR: bin/mesh_testing on a arch-linux2-c-opt named ahome by andrew Tue Aug 23 22:48:57 2016                                                                                         
>>> [0]PETSC ERROR: Configure options --with-debugging=0 --COPTFLAGS="-O3 -march=native" --CXXOPTFLAGS="-O3 -march=native" --FOPTFLAGS="-O3 -march=native" --download-exodusii=yes --download-hdf5=yes --download-netcdf=yes                                             
>>> [0]PETSC ERROR: #8 DMPlexGetRawFaces_Internal() line 93 in petsc/src/dm/impls/plex/plexinterpolate.c                                                                  
>>> [0]PETSC ERROR: #9 DMPlexGetFaces_Internal() line 20 in petsc/src/dm/impls/plex/plexinterpolate.c                                                                     
>>> [0]PETSC ERROR: #10 DMPlexInterpolateFaces_Internal() line 172 in petsc/src/dm/impls/plex/plexinterpolate.c                                                           
>>> [0]PETSC ERROR: #11 DMPlexInterpolate() line 532 in petsc/src/dm/impls/plex/plexinterpolate.c                                                                         
>>> [0]PETSC ERROR: #12 DMPlexCreateExodus() line 168 in petsc/src/dm/impls/plex/plexexodusii.c                                                                           
>>> [0]PETSC ERROR: #13 DMPlexCreateExodusFromFile() line 46 in petsc/src/dm/impls/plex/plexexodusii.c                                                                    
>>> [0]PETSC ERROR: #14 DMPlexCreateFromFile() line 1967 in petsc/src/dm/impls/plex/plexcreate.c                                                                          
>>> [0]PETSC ERROR: #15 main() line 11 in mesh_testing.cpp                                                                                           
>>> [0]PETSC ERROR: No PETSc Option Table entries
>>> [0]PETSC ERROR: ----------------End of Error Message -------send entire error message to petsc-maint at mcs.anl.gov----------                                                                     
>> 
>> 
>> -- 
>> Andrew Ho
> 
> 
> 
> -- 
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener
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