[Paraview] [EXT] Re: v5.0.1 & RealVNC

[Niklas Röber]

Hi,

haven't read the entire thread, but if you want remote visualization and
HAVE GPUs, why don't you use VirtualGL? Then you would start it with
"vglrun paraview", and ParaView would get a GPU buffer for direct
rendering. It is very easy to setup, just google for VirtualGL, and if
something does not work, email me...

Cheers...
Niklas
  
>
> Chuck,
>
>  
>
> This is what I get – none of this means anything to me!
>
>  
>
> Dennis
>
>  
>
>  
>
> Xlib:  extension "NV-GLX" missing on display "alnx031:15.0".
>
> OpenGL vendor string: Mesa project: www.mesa3d.org
>
> OpenGL renderer string: Mesa GLX Indirect
>
> OpenGL version string: 1.2 (1.5 Mesa 6.4.1)
>
> OpenGL extensions:
>
>  
>
> *From:*Chuck Atkins [mailto:chuck.atkins at kitware.com]
> *Sent:* Wednesday, April 13, 2016 11:56 AM
> *To:* Dennis Conklin <dennis_conklin at goodyear.com>
> *Cc:* ParaView Mailing List <paraview at paraview.org>
> *Subject:* Re: [EXT] Re: [Paraview] v5.0.1 & RealVNC
>
>  
>
> Hi Dennis,
>
> I suspect the GPU is not getting used by the VNC server and thus
> falling back to a software OpenGL implementation with older mesa and
> not a new enough OpenGL support.  Different VNC servers on Linux have
> different capabilities, with some able to reach their underlying GPU
> and some not.  From your VNC session, can you open up a terminal and
> run: glxinfo | grep '^OpenGL' ?  That should be more telling.
>
>
> - Chuck
>
>  
>
> On Wed, Apr 13, 2016 at 9:58 AM, Dennis Conklin
> <dennis_conklin at goodyear.com <mailto:dennis_conklin at goodyear.com>> wrote:
>
>     Chuck,
>
>      
>
>     Sorry, got additional details from the sysops.
>
>      
>
>     We have GPUs in our workstations – he was referring that we don’t
>     have GPU clusters for computation.    I understand that the VNC
>     server is running on the workstation that I attach to, and yes, we
>     are using the GPU on that workstation to render.
>
>      
>
>     FYI,  the workstations have Nvidia K4000 cards and we are running
>     realVNC – any chance this is part of your test suite?
>
>      
>
>     Thanks again, sorry for the confusion, but I am NOT a Linux or VNC
>     guru!!
>
>      
>
>     Dennis
>
>      
>
>     *From:*Chuck Atkins [mailto:chuck.atkins at kitware.com
>     <mailto:chuck.atkins at kitware.com>]
>     *Sent:* Tuesday, April 12, 2016 6:05 PM
>     *To:* Dennis Conklin <dennis_conklin at goodyear.com
>     <mailto:dennis_conklin at goodyear.com>>
>     *Cc:* ParaView Mailing List <paraview at paraview.org
>     <mailto:paraview at paraview.org>>
>     *Subject:* [EXT] Re: [Paraview] v5.0.1 & RealVNC
>
>      
>
>     Sorry, forgot to cc the list.
>
>     Hi Dennis, a few questions:
>
>     Are you using the binaries from paraview.org
>     <http://paraview.org/> or did you build it yourself?
>     Does the machine with the vnc server have a GPU you're trying use?
>     You said previous versions of paraview worked.  Does that include
>     5.0 and 4.x or just 4.x?
>
>     On Apr 12, 2016 4:04 PM, "Dennis Conklin"
>     <dennis_conklin at goodyear.com <mailto:dennis_conklin at goodyear.com>>
>     wrote:
>
>         All,
>
>          
>
>         So I started testing Paraview v5.0.1 Linux and it doesn’t work
>         with RealVNC v4, or v5.1.1 or v5.3 (dies with Segmentation
>         fault without even displaying a screen).   Earlier versions of
>         Paraview work but not 5.0.1.  I am not very familiar with
>         VNC.   Are there graphics or other options in VNC that need to
>         be tuned that I could refer to my sysops?
>
>          
>
>         Thanks for any hints.
>
>          
>
>         Dennis
>
>
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>
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-- 
______________________________________________ 

Dr. Niklas Röber
Visualisierung
Abteilung Anwendungen

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email: roeber at dkrz.de
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