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post #51 of 58
Quote:
Originally Posted by juano View Post

Make sure hardware acceleration is disabled in Firefox, Flash, and Silverlight if you use that as well.


Thank you. Firefox had it enabled by default; I've just disabled it. Do you think I'll be able to get away with increasing my clock speeds again without having random NANs due to the hardware acceleration?

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post #52 of 58
I don't know about that. It certainly wouldn't hurt to try, assuming you do it correctly and patiently so you don't fail a dozen WUs, but I wouldn't get your hopes up too high. If you really believe that the instabilities were related web page use and not just general instabilities then it might be worth trying.

Just FYI for anyone that might need to know how to disable these three hardware accelerations.
Firefox: Options-Advanced- General then under Browsing deselect "use hardware acceleration when available"
Flash: Right click on any flash window (Such as a youtube video)- Settings- the first tab is the display tab and it's only option is hardware acceleration.
Silverlight: You need the latest version of Silverlight 5 to turn it off then it is: Start menu: Microsoft Silverlight- Playback- at the bottom is hardware acceleration.
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post #53 of 58
Quote:
Originally Posted by juano View Post

I don't know about that. It certainly wouldn't hurt to try, assuming you do it correctly and patiently so you don't fail a dozen WUs, but I wouldn't get your hopes up too high. If you really believe that the instabilities were related web page use and not just general instabilities then it might be worth trying.


I got a single NAN at idle folding instantly at 962 MHz core within just a few moments of the client starting on -advmethods. (This was way back when I first tried to fold on my "gaming stable" OC.)

I reduced my clocks to 950 MHz and had a single NAN after 9 successful WUs. The NAN was when the PC was unattended.

I reduced my clocks by a much more significant value to 925 MHz and had a single NAN after 20 successful WUs. The NAN happened while I was web browsing (with hardware acceleration enabled) on this site.

I reduced my clocks to 918 MHz and completed about 35 to 40 WUs and then had two NANs while browsing on this site, back to back. When I stopped browsing, the NANs didn't occur.

 

However, I further reduced my clocks to 900 MHz and had no NANs for over 75 WUs. Since I was stable, and I knew more about what I was doing at this point, I started reducing my voltage slowly, to bring down the temperatures. I got all the way down to 1.100V but then I got a NAN while browsing this website with the hardware acceleration enabled. I didn't know if it was javascripts or flash that were causing it, and at the time I suspected that it was javascripts. I also didn't know about disabling hardware acceleration. However, I was positive that it was this website causing the issues, as I never had errors when the PC was unattended or while gaming and folding simultaneously.

 

To counteract this, I raised my core voltage in single increments, getting three more NANs (with several good WUs between each NAN) until I came to 904.5 MHz core and 1.138 V being a truly error-free operating point. I've completed over 250 WUs on my Fermi card, most of them -advmethods 7620, 7621, and 7622 projects and I have had a total of 9 NANs. (With the first 5 happening early on, when I was still learning.)

 

Unfortunately, there's no other program that I've found that can stress the card at this level where I can safely test without hurting Stanford's research. I've kept it to a minimum and I'd like to think that I've run enough successful WUs (with 98% or more time remaining to deadline) that I've made up for the few bad WUs that I caused.

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post #54 of 58
Well in that case it might be worth trying to up them a little bit. But as you're aware it's a slow process so I would up them 5 or 10Mhz and wait a week, then up them another 5 or 10Mhz and wait another week. So I think that you may be able to get higher clocks with good stability still, but we won't know for quite a while so don't get too excited waiting with bated breath, just do it patiently and so how it looks in a week.

I'm not concerned about you hurting the research, you don't seem to take failed WUs lightly and that's the right attitude to have so I'm sure you'll know what to do.
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post #55 of 58
Quote:
Originally Posted by juano View Post

Well in that case it might be worth trying to up them a little bit. But as you're aware it's a slow process so I would up them 5 or 10Mhz and wait a week, then up them another 5 or 10Mhz and wait another week. So I think that you may be able to get higher clocks with good stability still, but we won't know for quite a while so don't get too excited waiting with bated breath, just do it patiently and so how it looks in a week.

I'm not concerned about you hurting the research, you don't seem to take failed WUs lightly and that's the right attitude to have so I'm sure you'll know what to do.

 

I think that I'll make the first increase to my shader clock (or decrease to my Vcore) next month and then track it over the month of TC. I do take the errors seriously and it's taken me three months to get where I'm at, so I'm not expecting miracles overnight.

 

I was just curious what your thoughts were. I'm currently at 904.5 / 1809 / 2106 / 1.138V / 76C (max) at 97% fan speed (max) and the fan is not cycling up or down unless ambient temperature shifts significantly. (where I can be as low as 73C at 85% fan speed.)

 

I was also curious if it was a known issue with flash causing the NANs or just flash stressing the system that is already pushed to its limit, and more of a straw breaking the camel's back and triggering the NAN by exposing preexisting instability. I think that either case would be hard to prove, unless you're aware of a specific issue.
 

 

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post #56 of 58
Quote:
Originally Posted by shad0wfax View Post


I was also curious if it was a known issue with flash causing the NANs or just flash stressing the system that is already pushed to its limit, and more of a straw breaking the camel's back and triggering the NAN by exposing preexisting instability. I think that either case would be hard to prove, unless you're aware of a specific issue.

This I do not know but if I were to guess than I would say it would be the latter option I bolded.
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post #57 of 58
Quote:
Originally Posted by juano View Post

Quote:
Originally Posted by shad0wfax View Post


I was also curious if it was a known issue with flash causing the NANs or just flash stressing the system that is already pushed to its limit, and more of a straw breaking the camel's back and triggering the NAN by exposing preexisting instability. I think that either case would be hard to prove, unless you're aware of a specific issue.

This I do not know but if I were to guess than I would say it would be the latter option I bolded.


That's what I expect. I reduced the voltage a small bit and I'm seeing how things turn out. So far, so good.

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post #58 of 58
Quote:
Originally Posted by juano View Post

I don't know about that. It certainly wouldn't hurt to try, assuming you do it correctly and patiently so you don't fail a dozen WUs, but I wouldn't get your hopes up too high. If you really believe that the instabilities were related web page use and not just general instabilities then it might be worth trying.

Just FYI for anyone that might need to know how to disable these three hardware accelerations.
Firefox: Options-Advanced- General then under Browsing deselect "use hardware acceleration when available"
Flash: Right click on any flash window (Such as a youtube video)- Settings- the first tab is the display tab and it's only option is hardware acceleration.
Silverlight: You need the latest version of Silverlight 5 to turn it off then it is: Start menu: Microsoft Silverlight- Playback- at the bottom is hardware acceleration.


Your information was good. I have bumped up my clocks to 928 core / 1856 shader / 2106 memory (compared to my previous 900/1800/2106) at the same voltage. Since my post in Post #57 (which was nearly 2 weeks ago) I have completed 28 of the 7622 WUs, a 6802 WU, a 6803 WU, 3 of the 8031 WUs, 6 of the 8032 WUs, and one of the 8033 WUs. I have not had any NANs at all.

 

The problems were flash and firefox hardware acceleration related, as I've been doing work as well as gaming while folding simultaneously and had no issues.

 

I may be bumping up the clocks again.

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