[Paraview] Mesa/Offscreen Rendering

[Rick Angelini(CISD/CIV)]

It does render despite the error messages.     And yes, I am using 
"--use-offscreen-rendering"

Thanks


Utkarsh Ayachit wrote:
>
> Rick,
>
> Are you simply getting the error message or it even fails to render?
> There's some issue (which I will look into hopefully soon) which results
> in that error message, but that should not affect the actual rendering.
>
> Also just to confirm, you are using the --use-offscreen-rendering
> command line option on the server.
>
> Utkarsh
>
> Kent Eschenberg wrote:
> > Rick,
> >
> > A few months ago Utkarsh worked with me to get pvbatch to run without an
> > X server. He didn't have the time to figure out what was creating those
> > warnings. I haven't updated from CVS for a while but this sounds like
> > the same thing, only from pvserver instead of pvbatch.
> >
> > We ran pvbatch with 256 nodes on an XT3 where there was not only no X
> > server but no way for it to connect back to a display. Many warnings but
> > it worked.
> >
> > Kent
> > Pittsburgh Supercomputing Center
> >
> > Kent
> >
> > Rick Angelini(CISD/CIV) wrote:
> >> Is there an issue with offscreen rendering and mesa in the CVS?   I'm
> >> building Paraview from a CVS download from Monday.     I'm configuring
> >> this to run on one of our clusters that does not have GL cards and I
> >> believe that I'm building against mesa.
> >>
> >> When I fire up pvserver and connect back to the client, and load up
> >> some geometry (max'd out sphere, for instance), I get a number of
> >> X-windows errors on the server side, like it's trying to connect back
> >> to my display.
> >>
> >> Process id: 3 >> ERROR: In
> >> /build/src/ParaView-08.25.08/VTK/Rendering/vtkXOpenGLRenderWindow.cxx,
> >> line 1478
> >> vtkXOpenGLRenderWindow (0xb62160): bad X server connection.
> >> DISPLAY=hpc-cluster-l7:10.0
> >>
> >> The HPC node does not have GL cards and is not running an X server.  
> >> Other than spewing X-errors, I am getting updated GL on the client -
> >> it's just not clear to me that it's actually doing distributed SW
> >> rendering on the server side. I have a build from the last production
> >> release (3.2.1) that behaves properly ... but I didn't do that
> >> build!   8-)
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>