[aspect-devel] More vtu problems

[FELIPE ORELLANA ROVIROSA]

 Hello Lev,

      I have had that problem:

      I think it arises cause your pvtu, vtu file contains too many
nodes/degrees of freedom, the mesh is super refined.

        what do I do: I try to avoid volume (semitransparent )
visualization, and if useful, I try to use surface visualization cause it
is lighter.

       on top of that I plot the velocity using Glyph,

    on this operation, on the glyphs panel, i use Masking, and Glyph Mode:
Every Nth point: > select a stride of..100,  ..500  depending on your mesh..

 (try to use vector mode to get arrows scaling)

   with these two techniques, which can be used independently, or
simultaneously, I can plot large (highly refined mesh) computation outputs,
with Ndegrees of freedom >10^7

hope it helps,

cheers,
Felipe

On Wed, Aug 2, 2017 at 11:21 AM, Lev Karatun <lev.karatun at gmail.com> wrote:

> Hi,
>
> I ran into more problems trying to open vtu files. This time I used the
> option "number of grouped files = 1", and the output file opened without
> errors, but when I try to visualize the velocity using glyphs in Paraview,
> it crashes. It doesn't crash on a couple of first output files, only on the
> later ones. I attached the screenshot with error message. It's paraview 4
> on the screenshot, but I tried the earliest version with little luck.
> I tried doing the same in Visit, it didn't crash, but produced an error
> and didn't plot velocities either.
> I also tried checking the vtu file for NULL characters. Obviously I can't
> check a 300 mb file with bare eye, but I tried doing
> *tr < solution-00004.vtu -d '\000' > sol-04*
> and there was no difference between the original file and output of tr. I
> tried the same command the files I had problems with earlier, and there was
> difference, so I assume the command is correct.
> From the error message, I thought maybe Paraview ran out of memory, but I
> actually still have about about 4GB free. Also, the problem persists when I
> open a single 300mb file, which I successfully did many times in the past.
>
> If someone has any ideas on how to solve this, I would appreciate it.
>
> Best regards,
> Lev Karatun.
>
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