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Old 12-16-06, 03:01 PM   #37
sphincter
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Default Re: new board, new driver, same old problems

hello-o-o-o... any support around here-ere-ere-ere... guess not.
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Old 12-18-06, 11:43 PM   #38
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Default Re: new board, new driver, same old problems

This thread will die when I do, or when nvidia gets around to actually providing support for a "supported" configuration.
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Old 12-19-06, 03:58 PM   #39
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Default Re: new board, new driver, same old problems

I really feel for you and could not agree more on the sorry state of support from hardware vendors. The world will be so much better when the vendors wake up and release the source.
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Old 12-20-06, 12:35 PM   #40
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Default Re: new board, new driver, same old problems

yeah, well, ya live and ya learn. Just sort of sucks when the mistakes end up costing thousands.
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Old 12-21-06, 08:23 PM   #41
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Default Re: new board, new driver, same old problems

wheee-laaaa
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Old 12-22-06, 06:04 AM   #42
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Default Re: new board, new driver, same old problems

I've been using dual FX 4500 in SLI (SFR) mode on five HP xw9300 for about six months now without issue (RHEL WS 4). I will say I've found it difficult to quantify the performance gains in that the machines are almost singularly used to develop our in-house scene graph and simulation. I measure frame rate on the GL swap boundaries which is at most 60 Hz, but usually down around 10-15 when the sim visualization runs. I really need to do some benchmarking, but my time is limited.

With otherwise little issue, I have noticed two minor glitches.

On a Apple 30" display:
1) Large GLX windows (>>1024x1024) will make the video "hiccup".
2) I get oddly tiled (256x256) lines in pixels I've drawn to the screen using glDrawPixel() that are absent on lower resolution displays (e.g. 1920x1200).

Also, more seriously, on a new Boxx system with dual Quadro FX 5500. When pushing the limit of the video memory (exceeding 512 MB of loaded texture, display lists) and then opening a second GLX window can cause the whole system to hang (all four CPUs!). Frame rate will sometimes drop to 0.1 FPS for 10-20 seconds and then pick back up again (texture swap?). This system does not have the latest kernel patches, so I'll try that next when I get our support contract ironed out. But for now, I've disabled SLI which seemed to help. Would AFR (SLI mode) be a more stable choice?

As a long time IRIX user, I am thrilled that nVidia has helped champion OpenGL on Linux. I only hope the trend for improved stability and professional support continues. Our team does not consider Window an adequate computing environment for engineering simulation, and were it not for nVidia's Linux support we would not be using their product. I have also just received a 8800GTX board, and am eager to see if it can pull our shader-bound frame rate out of the gutter. A Quadro FX (professional) board with the new architecture and more memory (1.5 GB?) is something we could very much use as well.
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Old 12-22-06, 03:30 PM   #43
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Default Re: new board, new driver, same old problems

squeen,
I'd suggest creating a new thread for the issues you're experiencing (or even multiple threads), along with details how they can be reproduced, and an nvidia-bug-report.log.

thanks,
Lonni
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Old 12-23-06, 05:54 AM   #44
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Default Linux and SLI

Thanks Lonni, I'll do that. As I haven't fully exhausted my other debug options (e.g. driver updates, MMCONFIG options, etc.), I wasn't really trying to tackle these issues head on yet, but instead offer up some relatively positive Linux/SLI stability experiences since this thread was painting a very dismal picture in that regard. When I'm able to crave out some time from my current work schedule, I think I can put together some better test cases to submit if the problems persist.

That said, I do have a few simple questions regarding SLI and Linux. Is there a preferred test application under Linux to benchmark the speed improvements with SLI in modes off/SFR/AFR? Also, under Linux, in SFR mode, is it possible to toggle on the "green lines" I see in some Windows screenshots that show how the card in load balancing the frame? I apologize if this is covered elsewhere. I'm still getting familiar with the layout of this forum.

Thanks.
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Old 12-23-06, 02:40 PM   #45
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Default Re: new board, new driver, same old problems

@squeen: the SLI HUD can be toggled on the `nvidia-settings` OpenGL Settings page.
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Old 12-23-06, 05:03 PM   #46
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Default Re: new board, new driver, same old problems

Thanks zander. You know, I've read that a few places before. But there does not seem to be a spot for it. Perhap, my system set-up in incorrect but I have only

Performance
_ Sync to VBlank
_ Allow Flipping
Image Settings
(slider bar)
Miscellaneous
_ Enable gamma correction for antialiased lines
_ Disable use of enhanced CPU instruction sets

Nothing else. I have menu items for GPU 0 (thermal monitor, DFP-0 (hp L2335)) and GPU 1 (thermal monitor). Also,I have the following in xorg.conf
Quote:
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "Overlay" "True"
Option "CIOverlay" "True"
Option "SLI" "SFR"
SubSection "Display"
Depth 24
Modes "1920x1200_60" "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
If I have missed something essential. Any help would be greatly appreciated.
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Old 12-23-06, 05:06 PM   #47
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Default Re: new board, new driver, same old problems

@squeen: if the SLI HUD option is missing, then chances are SLI failed to initialize; the X log file should provide more information in this case.
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Old 12-23-06, 05:15 PM   #48
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Default Re: new board, new driver, same old problems

@zander
Also here is the output of /sbin/lspci -t
Quote:
-+-[0000:80]-+-00.0
| +-01.0
| +-01.1
| +-0a.0-[0000:81]--
| +-0d.0-[0000:82]--
| \-0f.0-[0000:83]----00.0
\-[0000:00]-+-00.0
+-01.0
+-01.1
+-02.0
+-02.1
+-04.0
+-05.0
+-05.1
+-05.2
+-06.0-[0000:01]----05.0
+-06.1
+-08.0
+-09.0
+-0a.0-[0000:02]--
+-0d.0-[0000:03-05]--+-00.0-[0000:04]--
| \-00.1-[0000:05]--
\-0f.0-[0000:06]----00.0
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