On 7. Nov 2013, at 18:44, cpapado [via Software] 
<[email protected]> wrote:

> So in the 1.4 programming guide in the pipe section it used to state that: 
> 
> For the WGL window system, the device selects the nth GPU in the system. 
> 
> and then under that (in the syntax description): pipe # 1-n times

I see where the confusion is coming from. It just means that you can have 1-n 
pipes, not that the use device 1..n.

> which is probably a little bit confusing. Maybe there should be a 
> clarification about wgl (that it defaults to device 0 and that the device 
> number actually defines the display rather than the GPU). 

Agreed.

> That's completely understandable, AMD's hardware isn't as prevalent as 
> NVIDIAs. Additionally AMD does automatic GPU affinity for windowed opengl 
> contexts (it will associate the context with the GPU on which the window that 
> contains the context is first created according to our conversations with 
> their hardware team and our benchmarks). They do have an affinity API for 
> off-screen contexts but we haven't had a need to use it yet. 
> 
> I don't think this would be a problem is there was just a tad more clarity in 
> the Programming guide (or maybe a special note about AMD users in windows?) 

I would prefer to automatically do the right thing on AMD Windows setups.

> No problem. This + proper device selection should generally ensure correct 
> affinity on AMD. 

In the sense device==monitor.

> I'm not sure why I'm having so many issues. I think there's some clang-5.0 
> specific stuff that needs to be added to the make files (for example, when 
> compiling lunchbox, I get header problems since it's trying to include 
> unordered_set from tr1/).

That was likely in a long-pending pull request which got merged today. I did 
compile Equalizer today, but you'll likely need to install some MacPorts. We 
should add a 'make port-get' to Buildyard, similar to the 'make apt-get' 
already in place.



Cheers,

Stefan.



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