[Paraview] Uncomplete display of large unstructured grid

[Cornelis Bockemühl]

Let me add a possible answer: Do you think it might be worthwile to try
compiling Paraview with Mesa on Windows (version 7)? As it seems that
the "native" OpenGL support is not really stable with the latest driver
- is there a chance that going through Mesa 3D would improve the
situation? Or is it even impossible, so I should better not even bother
trying?

Thanks for any helpful hint!

I mean: It is possible to do some limited working with a "ticklish
software" that tends to crash regularly (first of all: always save
everything immediately!), but it is not really so much fun...

Regards,

Cornelis

Am 29.08.2017 um 19:20 schrieb Cornelis Bockemühl:
> A little after a couple of days: It turns out that while the display
> is now complete, the program behaves now rather "ticklish" Doing too
> much of zooming, panning etc with a large model leads to crushes of
> the graphics driver (the message says explicitly!), the PV prog window
> becomes completely white and the program does not react any more; has
> to be killed with the task manager.
>
> So better save as the first action after a lengthy calculation, and
> only then try everytjing else to investigate the result.
>
> Regards, Cornelis
>
> Am 26.08.2017 23:37 schrieb "Cornelis Bockemühl"
> <cornelis.bockemuehl at gmail.com <mailto:cornelis.bockemuehl at gmail.com>>:
>
>     Thanks Ken, this solved indeed already the problem!
>
>     It was actually already my first guess, so I went to the Intel
>     site and installed from there a tool that was supposed to check
>     for potential driver updates - which found nothing!
>
>     The driver that actually helped came finally from the Lenovo site.
>
>     Regards, Cornelis
>
>     Am 26.08.2017 07:42 schrieb "Ken Martin" <ken.martin at kitware.com
>     <mailto:ken.martin at kitware.com>>:
>
>         If possible can you try updating the Intel driver for your
>         HD4000 and see if that makes a difference?
>
>         https://downloadcenter.intel.com/product/81499/Intel-HD-Graphics-4000
>         <https://downloadcenter.intel.com/product/81499/Intel-HD-Graphics-4000>
>
>
>
>         On Fri, Aug 25, 2017 at 11:11 PM, Cornelis Bockemühl
>         <cornelis.bockemuehl at gmail.com
>         <mailto:cornelis.bockemuehl at gmail.com>> wrote:
>
>             Hello all,
>
>             With some self-written plugin I am generating rather large
>             "unstructured grids". With a model with something more
>             than 700'000 blocks I realized that on my Lenovo notebook
>             I did not get a complete display of all the blocks, so I
>             made tests with subsets of the data. It turns out that
>             with less than 1000 blocks everything works fine, with
>             20'000 blocks there are already some "reductions" and
>             finally with the full model even more: see the attached
>             Powerpoint with screenshots (plus details about my system
>             and the Paraview version).
>
>             My question is now if there is possibly some kind of
>             "graphic card overflow" happening? I could so far not test
>             the software with the same model on another computer.
>
>             And whatever the reason is: is there something that I can
>             do about it?
>
>             It is to say that the unstructured grid is a bit
>             "unconventional" by the fact that often adjacent blocks do
>             not have common edges and points, sharing thus only common
>             partial faces. With this one possibility would be that
>             Paraview cannot properly carry out certain optimizations
>             that are relying on the fact that neighbor blocks
>             "normally" (??) share a face, edges and points. However I
>             do not know whether this is an issue or not!? In this case
>             it might be an option to change the entire data set to a
>             set of just cubes that happen to touch each other.
>
>             Regards, Cornelis
>
>             -- 
>             Cornelis Bockemühl
>             Basel, Schweiz
>
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>         Ken Martin PhD
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