Re: [Discuss-gnuradio] GRC's graphical sinks performance issues

[Marcus D. Leech]

On 09/04/2010 12:01 AM, Eric Blossom wrote:
> FWIW, independent of GNU Radio, I've found that OpenGL support in
> Linux still leaves a lot to be desired in the performance and
> reliability departments.  (Spoken as someone who's recently tried high
> performance cards from both Nvidia and ATI, trying both the
> proprietary and open source drivers for each one...  on Fedora 13)
>
> Eric
>
>
>   
I have a system upon which *none* of the Gnu Radio apps that include
OpenGL "stuff" will work at all, producing
  an almighty core dump from inside some Python gtk2 module.  Even when
I set "LIBGL_ALWAYS_INDIRECT=1".
  That's for identical F12 installations, Gnu Radio installations, etc,
etc.  Only difference is the video card.  And if I
  turn off OpenGL, things work.  But curiously enough the little OpenGL
test app, glxgears, works flawlessly (of course!).

-- 
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org