How is AP going?

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Message 962739 - Posted: 11 Jan 2010, 18:03:01 UTC

How is AP going? I´m a bit away of foruns (too much work). Any news on when they will be back?
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Message 962765 - Posted: 11 Jan 2010, 20:01:19 UTC - in response to Message 962739.  

AP is offline for several reasons.

1) No new work
2) the current work is old work that has been software blanked but has to much RFI to make AP useful.
3) software glitch on the AP server. they are attempting to fix this.

You'll note that there are less than 650 WU's left in the wild. So its unlikely that anyone is going to get one anytime soon.

Lunatics has made an ATI GPU/cpu sharing app that can run the the AP WU's. Now all we need is the work


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Message 962799 - Posted: 11 Jan 2010, 22:37:48 UTC

Yeah, they've been trying to fix some kind of database issue for several months now. Problem is the results from AP were not put into the database correctly, and they've been running some rebuild process to try to fix it, but for one reason or another, it either doesn't work at all, or doesn't do the right thing.

Last I saw in the tech news, Matt said that it looks like it is finally doing what they want it to do, but it will take eleven (!!!!) days to complete.

Once they're sure they got the database issue fixed, they'll turn AP back on.
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Message 962801 - Posted: 11 Jan 2010, 22:40:07 UTC - in response to Message 962799.  

Thats only if we get new work. They weren't running AP on the older noisy tapes


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Message 962891 - Posted: 12 Jan 2010, 17:15:55 UTC - in response to Message 962801.  
Last modified: 12 Jan 2010, 17:25:37 UTC

Thats only if we get new work. They weren't running AP on the older noisy tapes


Not sure if anyone has been keeping count of those OLD tapes. They were spun up for filtering towards the end of October, represented 11 months of data collection (we all know thats a slushy number), and Matt said there were about 500 of them (again, some small and some unusable despite filtering), and at that time our burn rate (crunching) was 3 to 4 tapes/disks a day (with Nez ;-), I know, I know, he was already gone ).

So if the plan is to finish the older tapes off before shifting back to new, then this likely is ~5 months worth which takes us into March.
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Message 975246 - Posted: 2 Mar 2010, 5:03:17 UTC - in response to Message 962891.  

at that time our burn rate (crunching) was 3 to 4 tapes/disks a day

Ready to send for AP seldom gets above 0 mind you neither dose the AP creation rate. How do we get through 4 AP tapes a day if the work creation rate is so low?
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Message 975255 - Posted: 2 Mar 2010, 5:58:47 UTC - in response to Message 975246.  

at that time our burn rate (crunching) was 3 to 4 tapes/disks a day

Ready to send for AP seldom gets above 0 mind you neither dose the AP creation rate. How do we get through 4 AP tapes a day if the work creation rate is so low?

Recordings produce something like 33+ MB for every AP. (I forget the exact number.)
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Message 975256 - Posted: 2 Mar 2010, 6:05:37 UTC - in response to Message 975246.  

at that time our burn rate (crunching) was 3 to 4 tapes/disks a day

Ready to send for AP seldom gets above 0 mind you neither dose the AP creation rate. How do we get through 4 AP tapes a day if the work creation rate is so low?

Each channel of a 50.2 GB "tape" file can provide 400 AP WUs. The 14 channels on each of 4 "tapes" provide 22400 WUs. That would be 44800 "Results ready to send" if nobody was assigned any to download, but demand is high enough they're usually assigned immediately. 44800 results in an 86400 second day suggests a peak creation rate slightly over 0.5, just now there are only 2 ap_splitter processes running and showing 0.266 creation rate.
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Message 975259 - Posted: 2 Mar 2010, 6:11:55 UTC

Thanks Joe & Aurora for explaining
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Message boards : Number crunching : How is AP going?


 
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