VRam Usage Errors on GTX1080 w/ new drivers

[morpheon]

Hi, 

 

For some reason the video ram reporting for all stats (usage, free, total) is reporting in the thousands shortly after reboot (currently I have 4184026mb of ram at 51075% usage ;P ) 

 

This just starting happening with the new drivers from nvidia so far as I can tell - thats the only thing thats changed. 

 

I have run this in both SLI and single card modes, removed and readded the sensor items etc...

 

Any other thoughts? 

[Fiery]

Please let us know exactly which ForceWare release do you have installed, and what Windows do you have running on your computer.

Thanks,

Fiery

[morpheon]

Version 372.54 - WHQL Release Date Mon Aug 15, 2016 Operating System Windows 10 64-bit

Windows 10 Anniversary Update 64-bit

 

 

Thanks Fiery! 

 

upon rebooting things are correct for a while but after closing a memory intensive program this seems to occur. I'll continue to test. 

 

Using the latest beta of Aida64 as well.

 

 

[Fiery]

Version 372.54 - WHQL Release Date Mon Aug 15, 2016 Operating System Windows 10 64-bit

Windows 10 Anniversary Update 64-bit

 

 

Thanks Fiery! 

 

upon rebooting things are correct for a while but after closing a memory intensive program this seems to occur. I'll continue to test. 

 

Using the latest beta of Aida64 as well.

Thank you! Can you please mention one or two of such memory intestive program?

[morpheon]

Actually had nothing to do with the programs. This happens after reboot after a few minutes but the timing is not consistent so its hard to figure out if something it triggering it.

 

I went back to the last stable Adia release and same issue.

 

I might try rolling back nvidia drivers just to see... 

[morpheon]

UPDATE!!!!

 

It happens when I close Chrome!!!!! Not sure why but this happens with both beta and stable Chrome releases. I dont have a lot of extensions installed but I will get those a shot. Any other thoughts?

[morpheon]

UPDATE 2!

 

https://www.grammarly.com/

 

This was the extension - close chrome and boom VRAM went crazy  - removed this grammarly extension and all is well. Hopefully this info is helpful to you or someone in the future. 

[morpheon]

UPDATE III 

 

Sadly I spoke too soon - it was not that extension but Closing Chrome definitely triggering the issue, 

[Fiery]

We've tried to replicate the issue using ForceWare 372.54, but it didn't come up on our test systems. Let me know if the issue still comes up with the latest ForceWare WHQL release of 372.70.

Thanks,

Fiery

[morpheon]

HI Fiery, 

 

After a LOT of testing I can say that it absolutely has to do with SLI. If enabled (even on 372.70) within a few mintues the readings will shoot up - always to something like 4184026mb of ram at 51075% ish. 

 

If I disable SLI the reading returns to normal immediately. Play a game, chrome - readings stay normal. I tested this for over 48 hours with no reading issues. 

 

Enable SLI and within a few minutes of gaming or chrome use the reading will shoot up again. 

 

I am lucky to have 2 GTX 1080s. For a long time this was working normally but over the past month or so it changed. 

 

I should also mention I am a windows insider on the fast ring (would go back to anniversary but its too late now without a fresh install) Perhaps that has something to do with it but I can promise you now SLI is at least triggering the issue.

 

Thanks for taking a look!

[morpheon]

Any thoughts Fiery ? Should I just reformat and install win 10 ann stable?

 

are there any logs that might be helpful that I can send. I can easily trigger the bug.

[Fiery]

Can you please create and submit a nVIDIA GPU Registers dump before and after the anomaly occurs?

You can create such dumps by right-clicking on the bottom status bar of AIDA64 main window --> Video Debug --> nVIDIA GPU Registers. Copy-paste the full results into this topic, or attach the results as a TXT file to your post. You may need to enable status bar in AIDA64 / main menu / View first.

Thanks,

Fiery

[morpheon]

Thanks! 

Here are four dumps

 

1 Sli Disabled - Correct Ram Readings

2 Sli Enabled - Correct Ram Readings 

3 Sli Enabled - Incorrect Ram Readings (bug)

4 Sli Disabled - Correct Ram Readings return

 

https://www.dropbox.com/s/lofzc4vvytbtk6n/nVIDIA%20GPU%20Registers.zip?dl=0

[Fiery]

Thank you! That looks like a ForceWare driver bug. Via the standard nVIDIA video driver API (called NVAPI) ForceWare reports the following values when things go south:

Total / Free Video Memory = 8388608 KB / 9376044 KB

Obviously "free" should never exceed "total"

[morpheon]

Ok! Well I will roll back to a June driver and see if that helps. 

 

But ultimately we need nvidia to fix this ? 

 

I know some folks on the Geforce team I can reachout to if so... 

[Fiery]

As long as free exceeds total, it's nothing we can do about it We need the video driver to report memory usage properly.

[morpheon]

HI!  Just FYI this was finally fixed in forceware 375.86 - it was known for SLI configs only.

[Fiery]

Thank you for letting us know about the resolution