Cruncher 1.06

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Cruncher 1.06

Unread postby yoyo » 29.08.2007 17:58

New in this version:
  • Every 1/8 of the whole computation the progress bar is increased.
  • Checkpoints are also added. I'm not realy sure how often the distributed.net client writes it. Now a abort or shutdown should not lead to an aborted WU.


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Last edited by yoyo on 31.08.2007 14:04, edited 1 time in total.
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Unread postby zombie67 » 29.08.2007 18:47

Great news!
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Unread postby yoyo » 29.08.2007 19:47

Hope it works.
The progress indicator is a bit strange. There are 8 OGR WUs in one Boinc WU. I do not know how long each of the OGRs needs and they may also be different. But after each of them the progress bar is increased and it schould go:
0% - 12,5% - 25% - 37,5% - 50% -.......
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Unread postby zombie67 » 29.08.2007 20:35

Good enough. At least we know now roughly how thing are progressing.

I thought you changed it from 8 to 2? Or did you move it back to 8 now that there is checkpointing?
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Unread postby yoyo » 29.08.2007 21:15

I changed it back to 8 because of available checkpoints and otherwise no progress indicator would be possible.
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Unread postby Ageless » 30.08.2007 15:43

I aborted yet another result as this one was constantly throwing my machine into a STOP 0x0000009c error. Perhaps that your application doesn't like CPU throttling. I have my CPU throttled at 65% in BOINC, it works fine with other projects.

And before anyone says to check my memory, that's fine. Checked rigorously already. It's a bulging capacitor on my motherboard that's causing some of the hangs, yet by throttling the CPU I have a stable system. Until I can get enough money together to swap motherboards.
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Unread postby yoyo » 30.08.2007 16:02

Hi,
I expect, that CPU throttling is not supported by the cruncher. The cruncher runs 100%. Do you know how throttling is realized in Boinc and the wrapper, what they are doing to use the CPU only 65%? Do they make some sleeps?
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Unread postby Ageless » 30.08.2007 16:56

Since BOINC is multi-platform, it's not using the Windows API to throttle the CPU.
Instead BOINC will internally pause crunching for several seconds per cycle. I explained it for whole numbers in this FAQ.

As for it working with the wrapper... As far as I know Cosmology and Hydrogen use a wrapper as well and they run without a problem with the throttling.
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Unread postby yoyo » 30.08.2007 17:57

This means you see in taskmanager that CPU usage is 100% for 2 seconds and 0% for 1 second and so on?
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Unread postby zombie67 » 30.08.2007 18:29

Correct.
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