[vtkusers] concept of visualizing large datasets (no ParaView)

David E DeMarle dave.demarle at kitware.com
Fri Jun 9 12:06:36 EDT 2017

Yes it works on my end and on the dashboards:

>From my desktop:

[image: Inline image 1]

David E DeMarle
Kitware, Inc.
Principal Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Fri, Jun 9, 2017 at 12:01 PM, Trevour Spencer <trevourspencer at gmail.com>

> Thank you for another suggestion. Have you run it, and does it work for
> you?
> I wonder, If I don't understand what you are recommending, or if my setup
> is broken and doesn't work as expected, or if the composite renderer just
> isn't supposed to work as I think it should.
> I can show you the result from Rendering/Parallel/Testing/Cxx/TestParallelRendering.cxx
> in the attachment. I started it as "mpirun -n 3 ./TestParallelRendering -I"
> and took a screenshot of the three windows. What I need is a full sphere in
> the first window (process 0), made of the red, blue and green segments. But
> again, only the red part appears in the first window, as in the previous
> examples that I have tested.
> Please confirm, whether you have the same result.
> Cheers
> Trevour
> 2017-06-09 15:19 GMT+02:00 David E DeMarle <dave.demarle at kitware.com>:
>> Try this one then. Rendering/Parallel/Testing/Cxx
>> /TestParallelRendering.cxx
>> Like all tests grep "Command" in the log file to show the command line
>> used to run it. Like most tests, this one can take a "-I" argument to make
>> it start the interaction loop rather than rendering once and finishing.
>> See in the test how each process uses the MPI rank to tell the
>> polydatamapper what piece it and the pipeline behind it are responsible
>> for. In this case the sphere source just makes its local section of the
>> sphere mesh, but in the same way parallel aware readers know what files or
>> data portions they are responsible for. Regardless of the pipeline, in the
>> end the vtkCompositedSynchronizedRenderer and Window make sure that all
>> ranks run at the same time and that, unlike in the other examples you
>> found, the compositer depth composites the results and gathers them to rank
>> 0 for display.
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