Linux driver 331.20 released

[ChristianVirtual]

http://www.nvidia.com/Download/driverRe ... 9372/en-us

An interesting function foul be this one:

Added support for multiple NVIDIA kernel modules. This feature allows users to assign different GPUs in the system to different NVIDIA kernel modules, potentially reducing the software overhead of coordinating access to multiple GPUs.

Will try on weekend if the PPD get hit like the last beta; hope a bug free folding run can be done with 780/660TI couple for more then 36 hours with high PPD.

[bruce]

Interesting, indeed.

Will this require a change to any of the FahCores?

I wonder what they mean by overhead. Will this increase or decrease the amount of CPU time needed to run FAH on multiple GPUs? (or leave it unchanged?)

[ChristianVirtual]

Still not looking good for the "old" 660TI,
A frame on 319.x driver which took around 2:38 now takes 4:01; not as bad as with the beta driver but still bad

As for 780 and the first frames it looks good.

So the question: what should I do with my 660TI ?

I hope that the new function as mentioned above might allow us to use 331.20 on 780 card while 319.x on 660

[jimerickson]

@ChristianVirtual: running gtx780's here. i am on 331.17, waitingfor xorg-edgers ppa to update. what project is your gtx780 on and what do ppd look like?

[ChristianVirtual]

Here the graph from all three cards

[jimerickson]

FAHMM, got to love it! use it all the time myself. thanks for the info, looks good.

[bruce]

Using all the time itself is good. Potential disadvantages: Heat is worse. Screen lag may or may not be worse.

Anything to report?

[jimerickson]

not seeing any screen lag at all. i really like the graphing feature. helps me understand whats going on with my gpus. heat maybe a little more than usual but nothing to be overly concerned about. thanks for all your work!

[ChristianVirtual]

660 TI finished ok, but took longer with less points (first line 331.20; second line the 319.x)

Code: Select all

Project	Run	Clone	Gen	TPF	Credit
7810	0	8	408	4:28	9856
7810	0	153	385	2:38	12837

Now I stop the 660 TI and let the system run to see if at least the 36 hours are ok ...

[powerarmour]

Yep still on the 319's myself, I was hoping Nvidia would have resolved this by now...

I've left my Fermi GTX 560 Ti running the 331.20's as the hit isn't too bad/almost negligible, but it still seems like half speed on the Kepler GTX 760.

[bruce]

At one time, installing Silverlight changed FAH's productivity. I've heard no recent reports either way, but it might be worth a try.

I'm trying out Win8.1 this week (ugh) and notice that it's an optional install.

[art_l_j_PlanetAMD64]

Now, this is for a Windows 7 system, not for a Linux system, but the newest driver that I tried out, v331.65, showed a 50%-60% drop in PPD values, when compared to the "best" older driver that I have used (v327.23 WHQL).

Please see a more detailed description about this, at this link.

Cheers,
Art

[powerarmour]

Yeah it's definitely the same issue though on the 331's, and although the Linux driver isn't quite in sync numerically, I'd have to assume all 331's will have this bug until resolved.

[art_l_j_PlanetAMD64]

At one time, installing Silverlight changed FAH's productivity. I've heard no recent reports either way, but it might be worth a try.

I'm trying out Win8.1 this week (ugh) and notice that it's an optional install.

That's interesting, I hadn't heard about that before (that installing Silverlight could change FAH's productivity).

I do know that I stopped installing Silverlight on my (Windows-only) machines, and removed it from all (Windows) systems where it had been installed, for some definite reason. My poor 60-year-old brain cannot remember the reason why I did this, but I do remember that there was a definite reason, why I did this (eliminated Silverlight from all 24 of my Windows folding systems).

Cheers,
Art

[ChristianVirtual]

The good news: system still working after 36 hours; I'm now in 39th hour after last reboot. That's good news for two GTX 780.

The bit strange thing is that after 36hours the already bad performing GTX 660TI gets even a tick worst and hit by another one or two second per frame. Not really important but indicating there is still something going on with the 36hours ...