[Paraview] Crash using openmpi with more than 4 processes

[Bart Janssens]

On Friday 05 February 2010 07:48:45 pm Jeff Baumes wrote:
> Just a thought: Have you tried an entirely clean rebuild? Someone got
> an error similar to this before and it went away after a rebuild.
> 

Nope, sorry, keeps happening after a full rebuild (even threw away the CMake 
cache). One thing I forgot to mention in my last mail is that 
glGetString(GL_EXTENSIONS) is NULL as well. It seems that somehow OSMesa and 
or ParaView think there is a valid context, but it's not really there.

I even tried applying this mesa patch that later got reverted:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=17090cf3efb0db8fa01b502a9c0df27cbd1a67da

The existence of that patch seems to at least suggest that accessing rendering 
contexts in parallel might cause problems on certain mesa configs. Getting the 
exact same OSMesa setup as someone who has this working on many processors 
could help to confirm this.

Cheers,

-- 
Bart