Help with GTX460 and 8800GT

It seems that a lot of GPU problems revolve around specific versions of drivers. Though NVidia has their own support structure, you can often learn from information reported by others who fold.

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Re: Help with GTX460 and 8800GT

Postby humboldt32 » Wed Jun 26, 2013 6:15 pm

P5-133XL wrote:Again, have you ever re-installed folding (do not save data) with both video cards and drivers already properly installed?


As stated in my third post, yes.

My apologies for "complaining." This is not very intuitive, even for someone who's been building computers for 20 years and folding for 10.

Thank you for your suggestions.
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Re: Help with GTX460 and 8800GT

Postby bruce » Wed Jun 26, 2013 6:28 pm

It was a lot simpler when GPUs only needed to be supported on Windows. Everybody could use Microsoft's method of enumerating hardware. V7 was aimed at working also on Linux and (eventually) OS-X so FAH had to adopt a non-proprietary methodology.

There are several open tickets that it only works right randomly when lspci happens to match the Windows sequence.

If you run FAHBench and look at how it chooses which GPU to test, it will help you understand many of the underlying details. One order is how the GPUs appear in the V7 system config. Then, CUDA and OpenCL drivers may or may not agree depending on what each of them finds.
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Re: Help with GTX460 and 8800GT

Postby humboldt32 » Thu Jun 27, 2013 6:55 am

Got them going, and thanks everyone who took the time to post for their input.

Uninstalling the client w/ data, and reinstalling the cards with drivers and fresh client install never worked. It did not "auto discover" properly out of the 7 or 8 times I tried it.

Was able to tweak the slot indexes manually and eventually found a working approach, more trial and error than anything else.
Tweaking the gpu-index makes sense but when to change the opencl-index and cuda-index, and what to change them to, still confuses me.

Thanks again.
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Re: Help with GTX460 and 8800GT

Postby humboldt32 » Fri Jun 28, 2013 4:24 am

Update:
Got both cards running fine last night.

Left them running and this morning the 460 had failed, 8800 still running fine.

Back from work and both had failed.

Any suggestions what to address now?

Thanks
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Re: Help with GTX460 and 8800GT

Postby 7im » Fri Jun 28, 2013 5:13 am

Failed how? Please be more specific, with error or log showing failure.
How to provide enough information to get helpful support
Tell me and I forget. Teach me and I remember. Involve me and I learn.
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Re: Help with GTX460 and 8800GT

Postby TheWolf » Fri Jun 28, 2013 5:34 am

x
Last edited by TheWolf on Fri Jul 12, 2013 5:36 am, edited 1 time in total.
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Re: Help with GTX460 and 8800GT

Postby P5-133XL » Fri Jun 28, 2013 6:14 am

Even if there is no OC'ing going on it is worth using one of the OC'ing utilities just so you can continuously monitor the state of clocks, temps, and % GPU usage in the systray.
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Re: Help with GTX460 and 8800GT

Postby humboldt32 » Fri Jun 28, 2013 7:18 am

Will try to post some log files tomorrow, long day of networking issues at work.

No overclocking on either card. Have Afterburner and gpu-z and a couple others installed, will try to poke around when I'm not so tired.

Thanks
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Re: Help with GTX460 and 8800GT

Postby cordis » Sat Jun 29, 2013 6:50 am

Hey PantherX, thanks for the detailed steps. One question, I can see how you get the gpu index, but how do you get the opencl and cuda indicies? Thanks again for the help!
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Re: Help with GTX460 and 8800GT

Postby bruce » Sat Jun 29, 2013 7:28 am

cordis wrote:Hey PantherX, thanks for the detailed steps. One question, I can see how you get the gpu index, but how do you get the opencl and cuda indicies? Thanks again for the help!


Run FAHBench. It will show you which devices are identified as an OpenCL device and in what order and which devices are identified as a CUDA device in what order, even if you only get as far as deciding how to select the device you want to test.
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Re: Help with GTX460 and 8800GT

Postby humboldt32 » Sun Jun 30, 2013 10:40 pm

What a week!
Thanks for the suggestions.
Had to reinstall everything several times to figure out how to get the 2 cards working again, and of course the heat was a major issue.

For the time being I just took the side of the case off and am blowing a fan directly onto the video cards. Just going to have to blow them off more often.

When I turn the fan off I can see the temperatures start climbing immediately with gpu-z.
Running fine for 72 hours now.
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