[Paraview] Catalyst osMesa rendering time

[Andy Bauer]

Hi Chris,

It sounds like you didn't properly build ParaView with offscreen rendering.
Can  you share your CMakeCache.txt from your build? I'm guessing VTK_USE_X,
VTK_USE_OFFSCREEN or some other thing didn't get set properly.

Andy

On Mon, Sep 12, 2016 at 1:36 PM, Christopher Neal <chrisneal at snumerics.com>
wrote:

> Hi all,
>
>
>
> I have compiled a version of ParaView with osMesa enabled. The version is
> 5.1.2 for ParaView. I’m running the CxxFullExample Catalyst example that is
> located in ParaView/Examples/Catalyst.
>
> *Operating system info*
>
> lsb_release –a:
> LSB Version:         n/a
>
> Distributor ID:     openSUSE project
>
> Description:         openSUSE 13.2 (Harlequin) (x86_64)
>
> Release:                13.2
>
> Codename:           Harlequin
>
>
>
> I have added 1 additional script to the Catalyst example by using the
> “CoProcessing” button in ParaView to generate a Catalyst script that just
> exports a .png of an isometric view of the geometry. When I run the
> example, the operating system seems to freeze up completely in my login
> session i.e. windows can not be clicked, nothing at all can be done with
> the exception of moving the mouse around on the screen. It stays frozen
> like this for about 2 minutes before a window pops up that says
> “Paraview(batch)”. In the window is the isometric view and the window
> updates to show the geometry at every timestep that the example outputs an
> image at. The Catalyst script does seem to execute fine and outputs image
> files for each frame that I requested, but it is soooo slow for some reason.
>
> Is this the expected behavior of running Catalyst with an osMesa build? I
> thought that ‘os’ stood for ‘off-screen’, which I interpreted as there
> being no screen display component to the rendering. Have I done something
> wrong with compiling ParaView with osMesa? Is Catalyst supposed to
> completely lock up the session until a window pops up?
>
> I would love to hear from other users of Catalyst to hear about the
> experiences of running Catalyst.
>
>
> Thank you,
>
> Chris Neal
>
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