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Old 05-29-10, 09:55 PM   #85
zyell
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

So far this new beta works! I am truly running at maximum performance now. I will continue testing, but so far I have noticed that when on battery power, a lower power level is chosen; however, it doesn't seem to adapt well. Furthermore, the power levels become mixed up, out of order. The highest speed becomes level 1 while a lower speed becomes level 3. I will continue testing...
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Old 05-30-10, 06:06 PM   #86
zyell
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

Ok, so this new driver works, but with some odd quirks. When I first installed the driver, running on AC power, I found that PowerMizer reported the 4 performance levels on my GTX 285M as being all the same except the first level. The first level was correctly reported as 200 MHz NV clock speed and 120 MHz memory clock speed; however, the other 3 performance levels were 600 MHz and 1000 MHz respectively. When I changed to battery power, I found that all the levels had changed. The highest performance level was incorrectly reported as level 2. Interestingly enough, the performance mode is stuck on Maximum performance and no adaptive clocking was present, until I made a modification in the xorg.conf file. I added Option "RegistryDwords" "PowerMizerLevel=03" to the Device section. While this forces operation at the lowest levels, it does not behave as it used to on other computers I have worked on. Instead, it engages the adaptive clocking and scales correctly according to usage, although performance mode still says maximum performance. However, each time it scales, the performance level speeds are changed and incorrectly reported. Another oddity is that nvidia-settings reports the speed as being maximum at 600 MHz and 1000 MHz; however, nvclock does not, it reports speeds for both around 450 MHz. I question what the actually speeds are as neither program appears to be functioning completely correctly under this new driver. However, I can report that I am attaining higher clock speeds with this new driver than with previous ones, I just don't know if it is truly maximizing my graphics card. I have attached an nvidia bug report. Thank you!
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Old 05-31-10, 08:31 AM   #87
cjb
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

zyell,

Do you have the cuda 3.0 sdk installed? If so, what's the performance of the FDTD3D example? It reports MPoints/sec near the end. My gtx260m also reports what looks like the correct clock speed in nvidia-settings, but benchmarks are still slow.

Otherwise, some othe suitable benchmark would be a quick way to see if we're working.
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Old 06-02-10, 05:20 AM   #88
queen6
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

It seems with most recent fix, powermizer levels are messed up. Maximum performance level is usually 1 (out of 0..4), where 3 and 4 are usually same as level 0.

Also on number of occasions performance levels chanced their values (there were constant with older drivers).

The most important part is fixed - if you select prefer maximum performance - the card enters highest clocks frequency (sometimes it's performance level 4 and sometimes it's performance level 1). Some screenshots describing the problem were reported in this thread: http://www.nvnews.net/vbulletin/showthread.php?t=151568
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Old 06-02-10, 06:10 AM   #89
cedric.s
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Thumbs up Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

Quote:
Originally Posted by danix View Post
Please try the new 256.29 beta release. Thanks!
yeah!!! it works!

i have 600Mhz/1000Mhz for my gtx 285M

thank you!
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Old 06-03-10, 01:03 PM   #90
f4ding
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

Quote:
Originally Posted by cjb View Post
zyell,

Do you have the cuda 3.0 sdk installed? If so, what's the performance of the FDTD3D example? It reports MPoints/sec near the end. My gtx260m also reports what looks like the correct clock speed in nvidia-settings, but benchmarks are still slow.

Otherwise, some othe suitable benchmark would be a quick way to see if we're working.
I have to agree with you here. I use NAMD (a molecular dynamic program) and I was able to get one of the drivers to work a few months back, although I couldn't find the driver anymore (I tested all of them). After I updated the driver, I could not get the correct driver to work again. When it was working, I was able to run NAMD with speeds 1.5x higher than the 8-CPU server that we have here.

Then with the newer drivers, I was getting horrible speed, really a slow down of NAMD instead of speed ups (even a 1-cpu only without GPU is faster than CPU+GPU). With the latest beta (256.29), it improves a little (faster than a 1-cpu or even 2-cpu) but I can still run a 4-cpu of NAMD faster than cpu+GPU. While the 256.29 driver improves something (the frequencies), it **seems** like some other CUDA related (that I've no idea of) is still not optimal.
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Old 06-06-10, 10:39 PM   #91
Syd10
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

Quote:
Originally Posted by zander View Post
No, the problem is that the driver needs to retrieve information via the ACPI subsystem, but some driver-internal wiring is incomplete/broken on Linux.
Does this mean that we will never get full performance with ACPI turned off?

This is concerning as we are deploying in a "semi-embedded platform" where ACPI is disabled for ruggedisation reasons.

Will there be a way to override PowerMizer? (I'm not bothered if this voids the warranty as the ruggedisation process has well an truly voided it already).
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Old 06-17-10, 12:49 PM   #92
gio___
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

After many tests I can confirm that Power Mizer levels are correctly used, apart from wrong reporting in nvidia-settings GUI... but that's not a problem.

However the problem that the nvidia-settings does not update the transition from AC power to battery and vice versa, remains. This leads to X crash when, for example, you started with power plugged in and then you continue to work on battery mode.
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Old 06-18-10, 07:17 PM   #93
cjb
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

In my case, my fx3800m (in a ThinkPad W701) works well enough, but my gtx260m (Alienware m15x) still runs 3-4 times as slow in Linux as in Windows, although the faster clock speed is reported in PowerMizer. gio___, what's your hardware?
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Old 06-19-10, 07:52 AM   #94
gio___
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

Quote:
Originally Posted by cjb View Post
In my case, my fx3800m (in a ThinkPad W701) works well enough, but my gtx260m (Alienware m15x) still runs 3-4 times as slow in Linux as in Windows, although the faster clock speed is reported in PowerMizer. gio___, what's your hardware?
I've GTX 260m and regarding performance I'm so satisfied. This is glxgears output
91525 frames in 5.0 seconds = 18304.920 FPS
95884 frames in 5.0 seconds = 19176.654 FPS

And this is glxgears in fullscreen mode:
10961 frames in 5.0 seconds = 2192.009 FPS
10973 frames in 5.0 seconds = 2194.500 FPS

My big problem by now are the X crash when I start the notebook with AC power plugged in and then I continue working on battery mode.
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Old 06-19-10, 11:37 AM   #95
cjb
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

Quote:
Originally Posted by gio___ View Post
I've GTX 260m and regarding performance I'm so satisfied. This is glxgears output
91525 frames in 5.0 seconds = 18304.920 FPS
95884 frames in 5.0 seconds = 19176.654 FPS

And this is glxgears in fullscreen mode:
10961 frames in 5.0 seconds = 2192.009 FPS
10973 frames in 5.0 seconds = 2194.500 FPS

My big problem by now are the X crash when I start the notebook with AC power plugged in and then I continue working on battery mode.
That's better than I see with glxgears, but OS, X config, etc, can make a big difference with that. I don't have any problems with AC/Battery switches, though. I'm running Fedora 12 on an Alienware m15x with a gtx260m. Kernel is 2.6.32.10-90, and xorg server is 1.7.6-1. What's your setup? And would you be willing to run some of the cuda SDK examples for comparison?
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Old 06-20-10, 03:34 AM   #96
mrn
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Default Re: 260GTX nvidia-drivers-190.42-r3 - powermizer issue

Quote:
Originally Posted by gio___ View Post
I've GTX 260m and regarding performance I'm so satisfied. This is glxgears output
91525 frames in 5.0 seconds = 18304.920 FPS
95884 frames in 5.0 seconds = 19176.654 FPS

And this is glxgears in fullscreen mode:
10961 frames in 5.0 seconds = 2192.009 FPS
10973 frames in 5.0 seconds = 2194.500 FPS

My big problem by now are the X crash when I start the notebook with AC power plugged in and then I continue working on battery mode.
I'm getting 20 frames/5sec in a window, glxgears is not a benchmark though. Could you run an actual benchmark + include some info about the system (cpu/gpu/resolution/window manager/compiz/driver version etc).
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