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Old 11-10-07, 12:42 AM   #5
etherfish
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Join Date: Nov 2007
Posts: 18
Default Re: Stumped!! Can't run more then 3 NVIDIA Cards!?!

I realize netllama already answered you, but I wanted to chime in.

I can verify that Linux can run more than 3 video cards, specifically, I have a machine running 6 concurrently. The first is AGP, the next 5 are PCI. Fortunately, the 5 PCI cards are distributed across 3 different PCI busses. The machine itself is a Dual Xeon 2.66GHz. We're using xinerama to stitch together six twinview setups of 1024x768 LCDs for a total screen size of 4096x2304. We can do HW accelerated OpenGL over nearly the entire screen - some part of the NVIDIA drivers or libraries choke when we create a visual too close to 4096 pixels wide.

Here's an excerpt from the Xorg.0.log:
(--) PCI:*(1:0:0) nVidia Corporation NV34 [GeForce FX 5200] rev 161, Mem @ 0x71000000/24, 0x90000000/28
(--) PCI: (3:1:0) nVidia Corporation NV34 [GeForce FX 5200] rev 161, Mem @ 0x73000000/24, 0xa0000000/28
(--) PCI: (3:2:0) nVidia Corporation NV34 [GeForce FX 5200] rev 161, Mem @ 0x74000000/24, 0xb0000000/28
(--) PCI: (4:1:0) nVidia Corporation NV34 [GeForce FX 5200] rev 161, Mem @ 0x76000000/24, 0xc0000000/28
(--) PCI: (5:0:0) nVidia Corporation NV34 [GeForce FX 5200] rev 161, Mem @ 0x77000000/24, 0xd0000000/28
(--) PCI: (5:1:0) nVidia Corporation NV34 [GeForce FX 5200] rev 161, Mem @ 0x78000000/24, 0xe0000000/28


The computer is named, of course, "Mr. Universe."
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