[eq-dev] 3 GPUs in 1 PC + with each GPU drive 2 displays = 6 displays

[Stefan Eilemann]

On 3. Dec 2008, at 23:19, wangfeiz at notes.udayton.edu wrote:

> In fact, I was assuming 3 GPUs, with each GPU drive 2 displays.

Ah!

>
> Originally, I expeted to address different GPU using  
> "WGL_NV_gpu_affinity".
> But you said that "WGL_NV_gpu_affinity" is only available on NVIDIA  
> Quadro cards.

Correct.

>
> I also noticed that Eqalizer use "WGLEW_NV_gpu_affinity".
> Does it mean WGLEW_NV_gpu_affinity" available on non-Quadro cards ?

GLEW is the library used by Equalizer for OpenGL extension handling.

> I most likely to use 3 Geforce 8800GTS in one PC to drive 6 displays  
> totally.
> So Equalizer has no problem?

On Windows, you can drive them sub-optimally using Equalizer, because  
the rendering commands for each display will be send to all cards.  
Linux does not have this limitation.

> So My configuration is like:
>
> I need three pipes, each pipe has its own window, and each window  
> has two channels.
>
> Am I correct ?

Yes. On windows you can also configure one pipe with one window and  
six channels.

> The Equalizer Programming guide did not say one context allow more  
> than more window or NOT, also did not say one GPU (pipe) allow how  
> many context.

One window = one OpenGL context and drawable
One pipe (GPU) has n windows
one window has n channels (rendering areas)

> I hope more explaination.

Please phrase your question, if my explanation above doesn't help.


Cheers,

Stefan.