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Re: Sticking W.U.

Most of this discussion is over my head, but I am wondering if it is safer to leave LIM off. I have LIM off on all my machines and have had no problems with hung jobs in 2 months, and I am only running WCG. I understand the general benefit of LIM on (performance), but if it creates problems.....
[Aug 31, 2008 4:37:33 PM]   Link   Report threatening or abusive post: please login first  Go to top 
JmBoullier
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Re: Sticking W.U.

From what I have read until now the LIM setting does not matter for getting stuck WUs eventually. It matters only for kicking it when you have got one (see posts above). If you never have stuck WUs why not set LIM ON and get its benefits when you have to stop/start your machine? But it is strictly as you like it. smile

Cheers. Jean.
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[Aug 31, 2008 6:36:37 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: Sticking W.U.

Read up on what it does (Jean promised a FAQ for this as he tested all the behavioral conditions). The unofficial wiki does not tell much in terms of the effect http://www.boinc-wiki.info/Preemption . Our Stuck WU FAQ here tells to switch it off before project suspending to get a job unstuck.

Historically it sped up crunching when running multiple projects and stopped loosing progress when benchmarking. I AM hyperventilating right now as benchmarking without LIM still causes checkpoint regression on v 5.10 and v 6 (confirmed with 6.2.18). Benchmarking is very hard to time if running a multicore PC and it happening exactly every 120 hours, or immediately upon boot if the PC was off at the end of the 120 hours. So to me it should be one of the exceptions where preempting always keeps job(s) in memory. THUS, switch it on if you don't want to loose progress due benchmarking!

Comments plz, and D., is there anything for this happening in the fork?

Edit: Correct hours in 5 days typo blushing
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[Edit 1 times, last edit by Sekerob at Aug 31, 2008 8:01:53 PM]
[Aug 31, 2008 6:56:22 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Crystal Pellet
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Re: Sticking W.U.

Benchmarking is very hard to time if running a multicore PC and it happening exactly every 140 hours, or immediately upon boot if the PC was off at the end of the 140 hours.


Sorry Sek, that 140 hours is that a slip of the pen?
Should this not be 120 hours (5 days times 24 hours)?

Cheers.
[Aug 31, 2008 7:44:09 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Sekerob
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Re: Sticking W.U.

oops , slip off the keyboard (but, I do cram like 28 worth into a day :O). I'll correct the original post.

thanks
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petehardy
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Re: Sticking W.U.

JmBoullier,

Regarding the forum it is on the time you or the default install have set it.
You may change it by selecting "My Forum Profile" in the forum tool bar, then click "Change my information" at the top. Then you will find the Time Zone setting that you can change as you like. Mine is on GMT for convenience although France is currently GMT+2.


My Forum Profile is set to Eastern Time(US), but my post times are 1 hour earlier(daylight saving?). It is now 18.22 here.

Pete

Edit - Grammar x2
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"Patience is a virtue", I can't wait to learn it!
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[Edit 2 times, last edit by petehardy at Sep 1, 2008 10:25:21 PM]
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JmBoullier
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Re: Sticking W.U.

It's possible that the current forum software does not manage DST. Since I have chosen UTC I have no such concern. And this possible weakness might have been one reason why I have chosen this time. But the main reason was that WCG being global and based on UTC I found it simpler to have the forum in WCG time and apply the offset mentally if I ever need it.

Now if you want to discuss this more deeply that would be more correct to open a dedicated thread in the Website Support section.

Cheers. Jean.
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[Sep 2, 2008 12:23:39 AM]   Link   Report threatening or abusive post: please login first  Go to top 
Crystal Pellet
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Re: Sticking W.U.

I got a computation error:

02-09-2008 14:24 Starting lx239_00050_14
02-09-2008 14:24 Starting task lx239_00050_14 using hpf2 version 518
02-09-2008 14:25 Started upload of R00102_58d9adc5f04a4b31f7fb1249b94eec9d_02_000_7_0
02-09-2008 14:25 Finished upload of R00102_58d9adc5f04a4b31f7fb1249b94eec9d_02_000_7_0
.
.
02-09-2008 18:13 Computation for task lx239_00050_14 finished
02-09-2008 18:13 Output file lx239_00050_14_0 for task lx239_00050_14 absent
02-09-2008 18:14 Sending scheduler request: To fetch work. Requesting 859 seconds of work, reporting 2 completed tasks
02-09-2008 18:14 Scheduler request succeeded: got 1 new tasks


An extended log from this error you can find in the ResultErrorLog with result-ID: 114154274.
I'm running Vista on a Quad and Boinc client version 6.2.16 for windows_x86_64 and LIM on wink .

Edit: Started a new thread about this problem on BOINC Agent Support.
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[Edit 1 times, last edit by Crystal Pellet at Sep 2, 2008 7:14:31 PM]
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Sekerob
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Re: Sticking W.U.

This thread has 2 posts related to the forum time showing thread and quotes a post by lawrencehardin here:
http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=21831

Chrystal Pellet,

"Output File Absent" could be security permissions in AV/OS or similar. Given you also report getting new FA@H in quorum 2, it's probably better to move this to the BOINC support forum in a new thread and leave this one for the "Stuck WU" problem of HPF2.

cheers
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