[petsc-users] HDF5 and ParaView

[Lisandro Dalcin]

On Mon, 13 Jul 2020 at 14:14, Mark Adams <mfadams at lbl.gov> wrote:

>
>>
>> I would probably move out of VTK files in favor of something else if I
>> had a way to encode VTK's (the library, not the file format) high-order
>> Lagrange elements.
>> Actually, I'm toying with dumping files with PETSc's raw binary I/O with
>> MPI, and writing a proper ParaView plugin in Python to read the data.
>>
>
> I'd love a high order viewer too.
>

Well, ParaView can actually do it. You need to open a vtu file with
high-order Lagrange elements, and then look for "Nonlinear subdivision
level" in the GUI and bump it up. The main issue is that the algorithm is
not "adaptive" and you may need to bump too much, then the thing becomes
quite slow.

Another one that does things very well is GLVis, although not with all the
features of the ParaView/VisIt+VTK combo. Stefano put a lot of effort
integrating GLVIs into PETSc, but maybe the integration with PetscFE and
DMPlex may require some extra work.

-- 
Lisandro Dalcin
============
Research Scientist
Extreme Computing Research Center (ECRC)
King Abdullah University of Science and Technology (KAUST)
http://ecrc.kaust.edu.sa/
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