[Paraview] couple of issues related with co-processing ...

[Andy Bauer]

Hi Ufuk,

I would suggest testing out some of the Catalyst examples which are in the
source code under the Examples/Catalyst subdirectory. I would also suggest
creating Catalyst scripts from data sets generated through Catalyst output
instead of the NetCDF files. There are two example scripts for this in
Examples/Catalyst/SampleScripts that you can use for this.

As for the grid names for the axes, this may be a bug in ParaView. I'll
look into that.

Best,
Andy

On Wed, Apr 13, 2016 at 8:44 AM, Ufuk Utku Turuncoglu (BE) <
u.utku.turuncoglu at be.itu.edu.tr> wrote:

> Hi,
>
> I am using co-processing (Catalyst) and i have couple of issues about the
> behavior of the co-processing module.
>
> 1 - If i send multiple 2d variable or single 3d variable to the
> co-processor, my custom code is working without any problem and produces
> desired output. On the other hand, the code hangs with multiple 3d variable
> (it basically opens a square white window and waits, see the attached
> screenshot). I have no idea about the problem because the terminal does not
> produces any output. I could install the ParaView in debug mode and it
> might help?
>
> 2 - The axis names (edited by Edit Axes Grid section in Properties window)
> are not written to the produced png file when the visualization pipeline is
> driven by co-processing but it looks fine under ParaView.
>
> 3 - When i trying to use volume rendering (single 3d field) along with
> co-processing, the code gives following error
>
> ERROR: In
> /opt/progs/paraview-5.0.0/src/VTK/Common/ExecutionModel/vtkCompositeDataPipeline.cxx,
> line 171
> vtkPVDataRepresentationPipeline (0x7fea05244010): Can not execute simple
> alorithm without output ports
> ...
> ...
> ERROR: In
> /opt/progs/paraview-5.0.0/src/VTK/Filters/Parallel/vtkPKdTree.cxx, line 296
> vtkPKdTree (0x7fea04f42840): (process 0) NumberOfDatasets = 0, cannot
> determine volume bounds.
>
> I could produce iso-surface with same code without any problem. The volume
> rendering is also working under ParaView.
>
> The last question might be related with the grid definition in the
> co-processing because i am using single netcdf dataset to create
> visualization scripts (python) under ParaView but in the model code
> (co-processing) the dataset is defined as MultiBlockDataSet due to the
> parallel nature of the simulation code.
>
> Regards,
>
> --ufuk
>
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