[PD] many DVI ports with Debian/Ubuntu and Gem

Pedro Lopes pedro.lopes at ist.utl.pt
Thu Jun 3 23:17:23 CEST 2010


>I can break it up across multiple computers if that's easier, I'm mostly
trying to reduce the expense. >I am just showing images, so not heavy on the
CPU/GPU
Its a possible solution, also you can split stuff with software and then
send to separate render nodes (aka computers) that will deliver those to
their screens (imagine each computer could have 2 screens), as cyrille
pointed this things can be heavy when you aim for higher res.
In college we have a 12-projector array [1], it runs GL apps using openSG[2]
cluster windows.

I'm really interested in seen that installation of yours come to life.
Please share videos/photos of it running on those 10 screens!

[1] http://open5.sourceforge.net/
[2] http://www.opensg.org/



On Thu, Jun 3, 2010 at 10:07 PM, Hans-Christoph Steiner <hans at at.or.at>wrote:

>
> The screens we are currently specing are 1080p, so each output should be
> able to do 1080.  The idea is to have 10 contiguous screens all in a line
> show one Gem space.  They can show up on the computer as contiguous or
> separate screens, that doesn't matter, I can handle the difference in Gem.
>  I think it might be easier to have them show up as separate screens.
>
> I can break it up across multiple computers if that's easier, I'm mostly
> trying to reduce the expense.  I am just showing images, so not heavy on the
> CPU/GPU.
>
> .hc
>
>
> On Jun 3, 2010, at 4:37 PM, cyrille henry wrote:
>
>  hello,
>>
>> with things like doublehead2go, or triplehead2go  :
>> http://www.matrox.com/graphics/fr/products/gxm/th2go/
>> you can easily have lot's of screen on 1 computer.
>> (downside is that the screen are only horizontal)
>>
>> i made a 6 screen installation with a 400€ desktop having good
>> performance.
>> (GPU was a NVIDIA 9600 or something : only use nvidia gpu on linux if you
>> need good performance and are not afraid of proprietary driver).
>>
>> but what is the resolution of the screen?
>> to have a screen disposition like this :
>> x x x
>> x x x
>> is less a problem than like this :
>> x x x x x x
>> The size of openGL windows is hardware limited. usually 4096x4096, but can
>> go up to 8192x8192 with GPU having lot's of memory (go for 1go video Ram).
>>
>> cyrille
>>
>> Le 03/06/2010 19:23, Hans-Christoph Steiner a écrit :
>>
>>>
>>> I am looking into doing a 10 screen installation using Pd/Gem. I'd like
>>> to run it on as few computers as possible. Anyone have any
>>> recommendations for Debian or Ubuntu setups that can have like many DVI
>>> ports in one computer?
>>>
>>> .hc
>>>
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-- 
Pedro Lopes
contacto: jazz at radiozero.pt
website: http://web.ist.utl.pt/Pedro.Lopes
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