[osg-users] osg apps on gpu cluster

[Trajce Nikolov NICK]

Thanks David,

> You might also have to think about synchronization if you are driving
multiple projectors that are blended to form a single image...and if you
have a decent amount of motion, you can get noticeable tearing in the blend
regions.

The output is not that much important in our case and there are no blending
or such (projectors etc). Anyway, this is the info I believe we need to
start investigate ...

Thanks again !

Cheers,
Nick

p.s.
> I do have an modification of OSG I could share that sets the GPU affinity
mask.....but its ugly.
Anything will help at this point :-)

On Thu, Oct 4, 2018 at 10:50 PM David Heitbrink <david-heitbrink at uiowa.edu>
wrote:

> GPU affinity is really only available with Quadro cards. AMD has there own
> system that is a little more complicated, and has a few more
> features....but I am not really experienced with those, and I believe they
> are only usable on the FirePro/Radeon Pro cards.
>
> We have found setting the GPU affinity is an absolute must for multi GPU
> systems on windows.
>
> Basically from what I understand, windows will by default dispatch the
> OpenGL commands to what it thinks is the fastest GPU in the system, then
> copies the result to the other GPU(s). Linux by default dispatches the
> commands to the GPU attached to the display the window is on......so
> setting the GPU affinity is most likely only worth while if you are using
> windows.
>
> FYI I think this was the talk I sat through on the subject:
>
> https://docplayer.net/29825650-Programming-multi-gpus-for-scalable-rendering-shalini-venkataraman-senior-applied-engineer-nvidia.html
>
> I do have an modification of OSG I could share that sets the GPU affinity
> mask.....but its ugly.
>
> You might also have to think about synchronization if you are driving
> multiple projectors that are blended to form a single image...and if you
> have a decent amount of motion, you can get noticeable tearing in the blend
> regions.
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=75038#75038
>
>
>
>
>
> _______________________________________________
> osg-users mailing list
> osg-users at lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>


-- 
trajce nikolov nick
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