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World Community Grid Forums
Category: Completed Research
Forum: Help Conquer Cancer
Thread: Work unit completed after deadline, still used by project? |
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Thread Status: Active Total posts in this thread: 10
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi everyone, I'm fairly new to all of this. I'm running a Q6600 across multiple projects (WCG, SETI, Milkyway, Rosetta). However, I'm not on my computer all that much. To give you an idea, I estimate that I've knocked out ~35 WU since late February, as well as some GPU work with Milkway.
----------------------------------------I've recently received a WU from Milkyway with a short deadline, and it's taking a very long time to process. I estimate that I'll complete the WU about 5 hours past the deadline, given my typical computer usage. My question is, do expired WUs still count as credit, and are they still used by the project? I don't know if I should just abort the WU now with 45% complete, or if I should see it through past the deadline instead of wasting it. I hate to throw away 20 or so hours of CPU time if it can still be used. Even if I didn't receive credit, I'd still like to complete/send it to the project if they'll use it. I'm asking here because these seem to be the most active / functional forums. In fact, I'll probably be focusing more on WCG projects from now on ;) Thanks guys/gals! I've learned a lot just reading through some of these posts here. [Edit 2 times, last edit by Former Member at Mar 19, 2010 3:14:10 AM] |
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gb009761
Master Cruncher Scotland Joined: Apr 6, 2005 Post Count: 3010 Status: Offline Project Badges: 
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Hi dan614614, and welcome
---------------------------------------- As to your question, there may be someone here who's also crunching WU's for that project which may be able to answer your query, although based on the projects/WU's we're running here, I'd suggest so. I'm basing this guess on the fact that, if/when you return your WU late, another replication will have been created/sent out - and, providing that your copy gets back first, then that's the copy the project would use. Obviously, I may be totally wrong in my assumption - it all depends on how that particular project wishes to play it.  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks gb, I might let it run out then and see what happens. I didn't know the projects have different criteria, but that makes sense. Glad I made it here, learning a lot of good stuff.
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
dan614614,
----------------------------------------in basic WCG will try to send a message to the client with the late result to abort it, when not yet started. If yours finishes first and the backup client has not yet started the No Reply replacement, it will be told to cancel that one. All depends on clients talking to projects in time. If not, then there will be a chance of there being for instance 3 copies for where e.g. 2 copies sufficed. They generally all get credit provided they're no too too late.
WCG
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Ingleside
Veteran Cruncher Norway Joined: Nov 19, 2005 Post Count: 974 Status: Offline Project Badges: 
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Hi everyone, I'm fairly new to all of this. I'm running a Q6600 across multiple projects (WCG, SETI, Milkyway, Rosetta). However, I'm not on my computer all that much. To give you an idea, I estimate that I've knocked out ~35 WU since late February, as well as some GPU work with Milkway. I've recently received a WU from Milkyway with a short deadline, and it's taking a very long time to process. I estimate that I'll complete the WU about 5 hours past the deadline, given my typical computer usage. My question is, do expired WUs still count as credit, and are they still used by the project? I don't know if I should just abort the WU now with 45% complete, or if I should see it through past the deadline instead of wasting it. I hate to throw away 20 or so hours of CPU time if it can still be used. Even if I didn't receive credit, I'd still like to complete/send it to the project if they'll use it. The most common answer to the question of tasks not returned by deadline on most BOINC-projects are: If it's returned before the re-issue-task it is useful, and you will get credit for it. If it on the other hand is returned after the re-issue-task so wu is already validated, your result will just be discarded by project, meaning not used for science, and you won't get credit. If by chance project has enabled server-aborting (most haven't), your task will be unconditionally aborted. CPDN will accept and use the result regardless of deadline, and crediting in CPDN only relies on Trickles and nothing else. For other BOINC-projects, the AFAIK only project that gives credit to too-late work returned after wu already validated is WCG... Oh, and there actually are some BOINC-projects that doesn't even send-out the re-issue, so all work returned after deadline is useless. If this is the case for Milkyway I don't remember...  "I make so many mistakes. But then just think of all the mistakes I don't make, although I might." |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
If it's returned before the re-issue-task it is useful, and you will get credit for it. If it on the other hand is returned after the re-issue-task so wu is already validated, your result will just be discarded by project, meaning not used for science, and you won't get credit. If by chance project has enabled server-aborting (most haven't), your task will be unconditionally aborted. For once READ, Ingleside, and DON'T ASSUME WCG goes by standard BOINC project rules. WCG GIVES credit for late results, even when quorum is complete and when still showing on the result status page as No Reply. AND NO WCG does not abort started tasks unless they're known to be bad.The latest silent change is that self-erroring results will get credit for time too, if the system can determine for cause of an application error. This is WCG. This is what we report and support on!
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at Mar 19, 2010 11:57:39 AM] |
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Ingleside
Veteran Cruncher Norway Joined: Nov 19, 2005 Post Count: 974 Status: Offline Project Badges:
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For once READ, Ingleside, and DON'T ASSUME WCG goes by standard BOINC project rules. WCG GIVES credit for late results, even when quorum is complete and when still showing on the result status page as No Reply. AND NO WCG does not abort started tasks unless they're known to be bad. The latest silent change is that self-erroring results will get credit for time too, if the system can determine for cause of an application error. This is WCG. This is what we report and support on! "I've recently received a WU from Milkyway with a short deadline"... "I'm asking here because these seem to be the most active / functional forums." I've answered the question dan614614 actually asked, even this isn't Milkyway. Since he's a new user, and this was his 1st. post here, was being nice to him, instead of saying something similar to "I know the answer, but you'll have to ask over at Milkyway instead"... As for assuming WCG follows common rules, I clearly listed the two exceptions, CPDN and...: "the AFAIK only project that gives credit to too-late work returned after wu already validated is WCG" In case it wasn't clear, the AFAIK goes on BOINC-project, and not how WCG does accept too-late results. "I make so many mistakes. But then just think of all the mistakes I don't make, although I might." |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Too late is a different classification to No Reply! You will rarely see that declaration here at WCG and when it does, it's been cases where the validation process had a hickup, in short, when a result on the WCG Result status page still shows as No Reply it continues to be good.
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WCG
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Cool down, please.
There is a lot of good information in this thread. There is no need to get all hot and bothered over tiny details. I thought of a very special case that almost never happens while reading this thread. But posting about it would not really help the readers. We have already covered the subject very well.  Lawrence |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Oh, sorry Lawrence. You need to Fez up now though, who says A needs to say B, but only if it's non-BOINC standard plz, ideally something along the lines of "all projects, except WCG... of course... we insist on being different... maybe because WCG came alive before BOINC was made generally accepted and until almost 2 years ago had 2 agents co-supported and merged on their website". Still a part in me regrets that the UD agent was not made Vista and multicore enabled. Barely any knobs... really, set and forget as it was meant to be.
----------------------------------------Just kiddin'
WCG
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