Working quad display suggestions

[Brad Best]

We have 20 setups with either 6 or 8 screens.  Most are running with
radeon 7000
pci cards, some with nVidia Geforce 6200 pci cards.  The only difference
in the two setups
seems to be the memory usage of the Xserver with the radeon cards, both
setups need
a good bit of memory (we have 1 GB in the boxes), but the radeon cards
seem to use more than the nVidia setups.
A config with only four screens should not have any problems, though,
Xinerama's memory
usage doesn't start to be a problem until we have 8 or 9 screens. 
I have no experience whatsoever with 3d acceleration, and I'm not sure
how newer versions
of X are with this, running 6.8.2 and tested on some older ones, haven't
retested in a while on a newer
version...

brad

Maciej Grzywocz wrote:

>Hi all
>
>I'm starting to develop an application which has to use several
>displays (at least four, maybe more in the future).
>
>I need to have a working hardware configuration capable of displaying
>one big window spanning 3 monitors plus one for controll app.
>
>Do you have some experience with quad head config? Which hardware will
>work without problems?
>
>There are some quad gfx cards available, eg. Matrox G450 MMS Quad,
>Matrox QID, ATI FireMV 2400 (apparently problematic with Xinerama from
>what I've read here).
>
>Will a dual Radeon X300 and two PCI cards work as 4-head display?
>
>Or maybe some older PCI nVidia cards (according to
>http://download.nvidia.com/XFree86/Linux-x86/1.0-8756/README/appendix-v.html
>they will be capable of hardware 3d acceleration in Xinerama)?
>
>I'll appreciate any info about your working quad head setup. TIA.
>
>  
>