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Re: [SCIRUN-USERS] OpenGL Issues?

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  • From: tom fogal <>
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  • Subject: Re: [SCIRUN-USERS] OpenGL Issues?
  • Date: Tue, 25 Mar 2014 10:32:04 +0100

Hi Damon!

Does 'glxgears' work?

Given that the second cards are teslas, you probably want to disable SLI. Try:

nvidia-xconfig --sli=off

I believe you need to restart your X server after you do that.

If you have no luck there, posting the output of 'glxinfo' to the list may be useful. Make sure to capture both stdout && stderr when logging it. IIRC glxgears and glxinfo are in the 'glx-utils' package on RH/CentOS.

All that said, if 'ShowField' is working then your OpenGL setup is probably okay. Might just be a bug in ConvertFieldsToTexture. Reducing the pipeline as much as possible and using a (faked) tiny data file would probably help debug.


On 03/24/2014 08:28 PM, Hyde, Damon wrote:
I'm having some issues with SCIRun that I believe are related to the
video drivers and OpenGL. Specifically, I have compiled SCIRun 4.7 on a
workstation running CentOS 6.5. The build script completes, and SCIRun
opens fine. I'm using ReadField to input a NRRD file, and can visualize
it with showField.

The issue arises with ConvertFieldsToTexture. The module seems to start
running, but never completes (or even shows a bit of progress). From
looking at the documentation a bit, it seems that this module relies on
OpenGL to run properly?

The workstation I'm running on has not one, but three different NVIDIA
cards installed in it. A Quadro 6000 card and two Tesla 2050 cards.
I've tried compiling SCIRun with the drivers from the CUDA toolkit, as
well as the standalone NVIDIA drivers. Everything seems to check out as
far as having the drivers installed properly, but I'm guessing my issues
with SCIRun somehow stem from the unusual configuration. Does anyone
have ideas for a potential solution to this issue?

Also just tried this with the latest trunk release and got the same issues.


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