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Christian Diepold

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Message 3255 - Posted: 16 Oct 2007, 7:07:35 UTC

Hi folks!

I built myself a new cruncher in the last couple of days. A Q6600 @ 3 GHz and 2 GB of RAM. It is 24 hours Prime95 (inplace FFT - all 4 cores - temp: 45-50 °C) and 24 hours memtest86+ stable. Also, it finished its first 50 something malariacontrol.net WUs just fine.

The problem is, when BOINC switches to C@H, it only takes a few seconds and WinXP will reboot. No bluescreen, nothing. Just a restart. I can reproduce that 100%. Now, as this is a fresh install of Win XP Pro SP2, without any further updates, is there anything CAMB needs, like .NET2 or .NET3 or anything like that, which is not included in SP2? I really want to do some C@H on that machine but as of now, it just won't let me.

Cheers & thanks!
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Message 3256 - Posted: 16 Oct 2007, 7:28:19 UTC - in response to Message 3255.  

Hi folks!

I built myself a new cruncher in the last couple of days. A Q6600 @ 3 GHz and 2 GB of RAM. It is 24 hours Prime95 (inplace FFT - all 4 cores - temp: 45-50 °C) and 24 hours memtest86+ stable. Also, it finished its first 50 something malariacontrol.net WUs just fine.

The problem is, when BOINC switches to C@H, it only takes a few seconds and WinXP will reboot. No bluescreen, nothing. Just a restart. I can reproduce that 100%. Now, as this is a fresh install of Win XP Pro SP2, without any further updates, is there anything CAMB needs, like .NET2 or .NET3 or anything like that, which is not included in SP2? I really want to do some C@H on that machine but as of now, it just won't let me.

Cheers & thanks!


Missing software components should not cause a reboot. If I were you, I would first see what happens when you try and run your machine at stock speed and voltages for all components (cpu, ram). If this succeeds, then you can try again at 3GHz, and give it a go with the free tool OCCT. I find it reveals OC related problems very quickly.

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Message 3257 - Posted: 16 Oct 2007, 7:30:26 UTC

Forgot to mention that: BOINC 5.10.20


@[BAT] tutta55

That's the problem, it also happens at stock speed. By now I also tried a Einstein@Home and a Rosetta@Home WU. No problems there. :-(
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Message 3258 - Posted: 16 Oct 2007, 7:34:24 UTC - in response to Message 3257.  
Last modified: 16 Oct 2007, 7:34:58 UTC

Forgot to mention that: BOINC 5.10.20


@[BAT] tutta55

That's the problem, it also happens at stock speed. By now I also tried a Einstein@Home and a Rosetta@Home WU. No problems there. :-(


Odd. I would still suggest you give OCCT a try. It's the first time I see a similar problem reported in here. My feeling is that you have a faulty component (cpu, ram, chipset). Cosmology needs a bit more memory than a lot of other projects, so maybe that's a possible explanation for it happening in here only.

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Message 3259 - Posted: 16 Oct 2007, 8:05:18 UTC

Hehe, I just passed OCCT (30 mins) without any error. Strange, isn't it? 0_o
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Message 3260 - Posted: 16 Oct 2007, 8:19:06 UTC - in response to Message 3259.  
Last modified: 16 Oct 2007, 8:20:51 UTC

Hehe, I just passed OCCT (30 mins) without any error. Strange, isn't it? 0_o


It is, yes. Apparently the Cosmology app must use some part of your system that it isn't happy with. I still think it's a hardware problem, but how to find it, eh? Anyone else with suggestions? These are just a few thing that come to my mind:
- Run the PCMark and/or 3DMark test suites. These test quite a few functions of the system. They're free, at least the basic tests are.
- Try and run the Cosmology application in stand-alone, i.e. without wrapper or Boinc. To do this, find the application (camb_1.25_windows_intelx86.exe) and one of its input files (you can see their name in Boinc Manager), and copy them together in a directory. Open a DOS box, CD to the directory and type camb_1.25_windows_intelx86.exe followed by the name of the input file. If that reboots your PC as well, then at least you can exclude Boinc or the wrapper.

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Message 3261 - Posted: 16 Oct 2007, 10:33:49 UTC
Last modified: 16 Oct 2007, 10:34:07 UTC

You can also try to throttle the CPU, see if that works out. Check the motherboard capacitors for bulging ones. If there are any, that's probably the cause for your reboots.
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Message 3266 - Posted: 16 Oct 2007, 15:47:41 UTC

You should also do all the Windows updates after SP2 just to make sure.
You never know with Windows...


mic.


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Message 3272 - Posted: 16 Oct 2007, 18:11:56 UTC

I just finished 4 WUs that happily crunched at the same time in 4 console windows. In other words, it's not CAMB that reboots my PC, it's got to be the wrapper or BOINC. :-(
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Message 3276 - Posted: 16 Oct 2007, 19:27:34 UTC - in response to Message 3272.  
Last modified: 16 Oct 2007, 19:27:55 UTC

If it were BOINC, all your projects would do that.
If you want to test if it's the wrapper, attach to another project using the wrapper. Off the top of my head, that's for example Hydrogen@Home or Enigma@Home. See my FAQs (in signature) for their links. (Hydrogen needs an invitation code, PM me if you need it)
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Message 3278 - Posted: 16 Oct 2007, 20:06:53 UTC

Thx for all you input folks, but I solved the problem.

Believe it or not, raising my CPU voltage by 0,125 did the trick. All 4 cores now crunch C@H and no more reboots. The thing that's really surprising to me is how sensitive C@H was to the overclock - and why it would only reboot with BOINC, but not if 4 consoles of CAMB were running.

I mean, 24h Prime, 24h memtest, 6h 3DMark and 2h OCCT stable is a pretty good statement in my book, but maybe I'll use C@H in the future to test my overclocked rigs.

:-D
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Message 3283 - Posted: 16 Oct 2007, 21:15:53 UTC

Glad you got it solved. Just out of curiosity, at what voltage are you running it now?

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Message 3286 - Posted: 16 Oct 2007, 21:47:06 UTC

Setting at 1,300 - with vdroop around 1,275 I guess.
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