[Paraview] RedHat6/mesa/Paraview5.3 problem

[Patrick Begou]

Hi Chuck

thanks for all these details. Finaly I had to install a dedicated version of 
mesa as the update to 11.0.7 from ELrepo was breaking one of our licensed 
software (ANSYS) and I had to roll back to 10.4.3.:-[
I've compiled mesa-17.0.4 (with llvm-4.0.0, libdrm-2.4.70, xcb-proto-1.12, 
pthread-stubs-0.3, libXau-1.0.8, libxcb-1.12, libxshmfence-1.2 prerequisites) 
and all seams running fine now with hardware rendering (?). In my VNC session:
$ glxinfo
....
direct rendering: Yes
...
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 4.0, 256 bits)
OpenGL version string: 3.0 Mesa 17.0.4
....

so am I using the GPU (direct rendering is set to yes) or the CPU (if llvmpipe 
is software rendering) ?

Patrick

Chuck Atkins wrote:
> Hi Patrick,
>
>     On a RedHat 6 server, with AMD firepro W7000 GPU
>
> ...
>
>     I'm launching paraview via vncviewer on this node.
>
>
> If you're running via VNC then unfortunately you won't be using the GPU 
> (unless you get more creative with something like VirtualGL).  You're only 
> going to be able to use the CPU based renderer in Mesa.
>
>     If you are using Mesa please make sure you have version 10.6.5 or later
>     and make sure your driver in Mesa supports OpenGL 3.2.
>
>
> So, Mesa got OpenGL 3.2 support in 10.6.5, but not all of the drivers 
> implemented it until much later.
>
>     OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.6, 256 bits)
>
>
> llvmpipe is Mesa's software renderer
>
>
>     OpenGL version string: 2.1 Mesa 11.0.7
>
>
> Older versions of Mesa may have supported OpenGL 3.2 at it's core but the 
> llvmpipe driver still took a while to catch up.
>
>
>     So which minimal mesa version is required for paraview 5.3 ?
>
>
> It wasn't until Mesa 12 that OpenGL 3.2 was properly supported and reported by 
> all Mesa drivers.  With some versions of 11, though, it works *enough* that 
> you can fake it by exporting the environment variable GL_VERSION_OVERRIDE=3.2, 
> so give that a try.  If you instead want to just use the linux binaries from 
> paraview.org <http://paraview.org>, we build those on EL6 and include a very 
> recent copy of mesa with it that you can make paraview use with:
>
> paraview --mesa-swr
>
> That instructs ParaView to use it's own copy of Mesa and the OpenSWR parallel 
> CPU rasterizer.
>
> - Chuck
>


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|  Equipe M.O.S.T.         |                                      |
|  Patrick BEGOU           | mailto:Patrick.Begou at grenoble-inp.fr |
|  LEGI                    |                                      |
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