GTX 780 BAd Work Units?

[Kjetil]

You can see it in your log: FS00:0x17:Version 0.0.55

[s/j]

Got it:
20:06:06:WU00:FS01:0x17:Version 0.0.52

[bruce]

What was the xyz that you came up with?

[s/j]

C:/Users/Eds Sled/AppData/Roaming/FAHClient/cores/web.stanford.edu/~pande/Win32/AMD64/NVIDIA/Fermi/Core_17.fah/FahCore_17.exe

[s/j]

I had time last night to experiment with this issue. As you are aware, GTX 970 folds, GTX 780 does not.

I shut down folding, un-installed folding, removed the 970 and then re-installed folding. Result: the 780 folded just fine!

Next, I added a slot for the 970. Result: as before, the 970 folded but the 780 quit folding with the same log result "Bad Work Unit".

Reviewing the log I noticed that after I added the slot for the 970, "Warning-Changed SMP threads from 7 to 6, this can cause some work units to fail."

Any thoughts?

[rwh202]

What driver version have you been using?
344.16 is only for 970/980 and doesn't include other gpus under its list of supported cards. Maybe try 344.11 that should officially support both cards.
I'm happy to be proven wrong, but I'd still suspect the client has the GPU enumeration wrong and the 780 is folding. Do the temperatures / utilisation confirm that the 970 is folding?
The SMp thread warning is normal and is probably for the best - 6 is safer than 7 for a number of CPU projects. It is trying to save a thread for each GPU

[s/j]

RWH, I will check driver versions this pm and post back what I find. I agree, it does seem like the client is confusing the GPUs. I will also check the temps GPU temps on Afterburner to see if I can tell. Thx!

[bruce]

Reviewing the log I noticed that after I added the slot for the 970, "Warning-Changed SMP threads from 7 to 6, this can cause some work units to fail."

Any thoughts?

That's unrelated.

This topic is about GPU folding. The message you're reporting is from you CPU slot, so the question is off-topic.

[s/j]

RVW: Right now I am successfully folding the 780 GPU as the 970 is not installed. Strangely, Win 7 Device Manager says the 780 is using 344.11 (9.18.13.4411) yet Afterburner displays the 780 Driver as 344.16, even after I re-installed Afterburner.(?)

I was thinking the next step would be to add the 970 and then add a slot for it. If it behaves as last night, the 780 would cease to fold (fail)and the 970 would begin folding. Any thoughts? Anyone?

[Joe_H]

It is recommended that the folding client software be uninstalled and then reinstalled after changing GPU's. Then the software has a better chance of getting the index values right. In the less common case that the software gets the index assignment wrong, there are instructions available on how to determine which index value goes to which GPU and manually setting the values.

Edit: One post that covers manually assigning GPU index step by step is the following - viewtopic.php?p=199379#p199379.

[bruce]

According to something I read somewhere, 344.16 specifically addressed Maxwell, whereas 344.11 was recommended for Tesla/Kepler/Fermi. I guess youve demonstrated that the Maxwell upgrade didn't break Keppler in a single-GPU system. Maybe it does in a dual-GPU system.

The driver developers must do a huge percentage of beta testing in single-GPU systems. This isn't the first time I've seen drivers which apparently worked fine with one GPU but it took another upgrade to get them to work in multi-GPU installations.

[s/j]

Thanks Joe and Bruce. I will un-install folding and re-install after adding the 970 as well as experiment with the drivers.

[s/j]

Guys, there is great joy in Mudville! I may have this fixed. Seems a combination of two factors.

First, the 780 actually had 344.16 driver even though Win 7 Device Manager indicated otherwise. I replaced this with 344.11.

Secondly, I noticed that whenever the 970 was installed, Windows would download additional NVIDIA drivers including drivers for NVIDA High Definition Audio. As my motherboard already had Realtek HD Audio, I disabled both NVIDIA HD Audio Drivers as well as NVIDIA Virtual HD Audio in Windows Device Manager.

So far, both 780 and 970 are folding together.

Bruce, will you please wait until I post back in the morning after folding all night to make certain all is well prior to closing this post?

Thanks to all,

-Ed

[bruce]

We don't "close" topics unless there's a serious fight going on or something like that.

I have the same issue with the Audio Drivers. On Windows (at least) you can select Custom Install (or something like that) and un-check the NVidia Audio drivers unless you have speakers on your TV/Monitor.

[Rel25917]

The audio driver is for audio over hdmi, should be no reason for it to affect folding.