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

[Dennis Conklin]

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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