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World Community Grid Forums
Category: Active Research
Forum: Africa Rainfall Project
Thread: Work Available |
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Thread Status: Active Total posts in this thread: 3595
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7849 Status: Offline Project Badges: 
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33946 verified as I received generation 092 overnight.... I guess it really needed 6 tries to get it right. Only 2 of the jobs were valid, the other 4 returning "invalid". Mine was one of the invalids and entity's made one other valid. We will probably never know why 4 of the units were invalid, but at least there are valid results in the end. Cheers
Sgt. Joe
*Minnesota Crunchers* |
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geophi
Advanced Cruncher U.S. Joined: Sep 3, 2007 Post Count: 113 Status: Offline Project Badges: 
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33946 verified as I received generation 092 overnight.... I guess it really needed 6 tries to get it right. Only 2 of the jobs were valid, the other 4 returning "invalid". Mine was one of the invalids and entity's made one other valid. We will probably never know why 4 of the units were invalid, but at least there are valid results in the end. Cheers It had to be on the thin edge of stability for that many "reliable" PCs to return an invalid. It'll be interesting to see what happens in the next generation for that unit. |
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MJH333
Senior Cruncher England Joined: Apr 3, 2021 Post Count: 301 Status: Offline Project Badges: 
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Mike,
I've now got ARP1_0035476_115_3. Although this is generation 115, I think it might be one of the formerly stuck units, because it is replication 3 and time step 24. Cheers, Mark |
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Mike.Gibson
Ace Cruncher England Joined: Aug 23, 2007 Post Count: 12594 Status: Offline Project Badges: 
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Mark
Thank you. That must be one of the 3 escapees fom the extreme category, What was the initial replication? Mike |
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MJH333
Senior Cruncher England Joined: Apr 3, 2021 Post Count: 301 Status: Offline Project Badges:
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Mike,
Sorry, noob question here, but is the "initial replication" the number 3 given in the workunit details below? I had assumed so. Project name: Africa Rainfall Project Created: Jan. 9, 2022 - 05:11 UTC Name: ARP1_0035476_115 Minimum Quorum: 2 Replication: 3 Wingmen _0 and _1 were sent out on 9 January. Wingman _1 errored out on 12 January and _2 was sent out then. I received _3 today when _2 returned its result. At the moment, _0 and _2 are pending verification. Here's a link to the workunit, in case that helps explain what I'm rambling on about! https://www.worldcommunitygrid.org/contribution/workunit/109872558 Cheers, Mark |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
With Kevin changing them back to time step 36, do we need to track anymore?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Kevin,
If you see this thread and have a day when you are only 95% busy, I would be interested in knowing the percentage of ARP1 tasks that are returned due to missing the 7 day deadline in a given 24 hour period. Anecdotally, it seems there are a lot (yes, a relative term) of later generations (being defined as 120 or later) that are sending _2 versions. Reviewing the WU, there is always one that missed the deadline and so the _2 went out. If in the 1% range then not much can be done but if closer to 10% that seems like the project is being significantly delayed. Just curious. |
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Mike.Gibson
Ace Cruncher England Joined: Aug 23, 2007 Post Count: 12594 Status: Offline Project Badges:
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Mark
The initial replication was 2 (0 & 1) then 2 subsequent replications. I should have used the term minimum quorum . Nice to see that those that escape the extreme grouping revert to 2. Mike |
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Mike.Gibson
Ace Cruncher England Joined: Aug 23, 2007 Post Count: 12594 Status: Offline Project Badges:
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entity
No-one else has reported a reversion to 36 second time step. Please advise the units concerned. As regards the 7-day deadline. That is what it says on BOINC Manager, but it is actually 8 days for normal units or 4.5 days for priority units. Mike |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
From Kevin:
We had a meeting with the research team today and those units that had the time step changed to 24 can be moved back to 36 now that they have moved passed the challenging conditions. This will be a technique that we use going forward that when a given unit on a given generation cannot successfully complete the run we will lower the time step and retry the run and then bring it back to 36 for subsequent generations. This means that there should be extremely few of the long-running workunits for this project going forward. |
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