NV 36 hour tdr bug resolved in linux

[jimerickson]

i am happy to report that the 36 hour tdr bug is resolved in linux with the release of nvidia-331. if you are on ubuntu its available through the xorg-edgers ppa.

[ChristianVirtual]

Your make my day !!

Thanks for sharing. Happy to get rid of daily reboot.
Any visible impact on performance/PPD as reported on earlier versions ? On GTX 780 or 660Ti ?

[jimerickson]

i am on gtx 780's. though i have gotten higher ppd since installing it i attribute that to the run of work units i have had (no p8900). will know more by the end of the week after it has run awhile.

[7im]

Others have reported a 10% drop in performance for non-780/Titan cards. That may improve in future releases, but some people are sticking with the older drivers, and still rebooting once a day. Time will tell.

[Zagen30]

Others have reported a 10% drop in performance for non-780/Titan cards. That may improve in future releases, but some people are sticking with the older drivers, and still rebooting once a day. Time will tell.

I think those seeing a 10% drop were running Fermis or rather low-end Keplers. People running 770s, 760s, and 680s were seeing over 60% drops.

[7im]

Whatever the case, it's still not a good option.

[ChristianVirtual]

Its weekend, nothing better to do so I decided to reinstall my Ubuntu box to mainly switch to EXT3 instead of EXT4 and get a ramdisk in. Sidestory.

I also installed the new nvidia driver 331. Not yet even close run to full 36 hours but some data points I can confirm with the setup

MB: Asus P8Z77 V-PRO
CPU i7 2600S
Memory: 8GB
GPU0: 780 GTX
GPU1: 660 TI

just the first frames

on my 780 it looks very good: 8900 with TPF 3:20 and ~137kPPD; very much normal.
on my 660 Ti it looks ... awful ! 8900 with TPF 10:20 (!) instead 5:47; 17 hours total time instead of 9 hours

So I think after the 660 TI is done I will downgrade to 319 again until some revised driver will be around. Just don't want to loose those points.
(My wife would say: I told you )

Update: I couldn't watch any longer my 660TI suffering;
1) stop the FAHclient
2) ppa-purge
3) reinstalled 319 from ppa:ubuntu-x-swat/x-updates
4) reboot box
5) start FAHclient

Now seems I get the original TPF values back with 5:30 for the 660TI and 3:20 (still) for 780; based on the log file. The PPD estimation and TPF value from client are still off; some more frame to align.

and so end the little experiment with nv-331 ... maybe next time ...

[ChristianVirtual]

... there was only one good thing I saw with the 331 driver: the 660TI run 5C cooler ; which didn't surprised with the reduced speed

[7im]

v331.58 for Windows posted today.