Message boards :
Number crunching :
How is AP going?
Message board moderation
Author | Message |
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IFRS Send message Joined: 21 May 99 Posts: 1736 Credit: 259,180,282 RAC: 0 |
How is AP going? I´m a bit away of foruns (too much work). Any news on when they will be back? |
skildude Send message Joined: 4 Oct 00 Posts: 9541 Credit: 50,759,529 RAC: 60 |
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 In a rich man's house there is no place to spit but his face. Diogenes Of Sinope |
Cosmic_Ocean Send message Joined: 23 Dec 00 Posts: 3027 Credit: 13,516,867 RAC: 13 |
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. Linux laptop: record uptime: 1511d 20h 19m (ended due to the power brick giving-up) |
skildude Send message Joined: 4 Oct 00 Posts: 9541 Credit: 50,759,529 RAC: 60 |
Thats only if we get new work. They weren't running AP on the older noisy tapes In a rich man's house there is no place to spit but his face. Diogenes Of Sinope |
52 Aces Send message Joined: 7 Jan 02 Posts: 497 Credit: 14,261,068 RAC: 67 |
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. |
Speedy Send message Joined: 26 Jun 04 Posts: 1643 Credit: 12,921,799 RAC: 89 |
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? |
Aurora Borealis Send message Joined: 14 Jan 01 Posts: 3075 Credit: 5,631,463 RAC: 0 |
at that time our burn rate (crunching) was 3 to 4 tapes/disks a day Recordings produce something like 33+ MB for every AP. (I forget the exact number.) |
Josef W. Segur Send message Joined: 30 Oct 99 Posts: 4504 Credit: 1,414,761 RAC: 0 |
at that time our burn rate (crunching) was 3 to 4 tapes/disks a day 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. Joe |
Speedy Send message Joined: 26 Jun 04 Posts: 1643 Credit: 12,921,799 RAC: 89 |
Thanks Joe & Aurora for explaining |
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