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World Community Grid Forums
Category: Completed Research
Forum: FightAIDS@Home
Thread: To Completion Time going up? |
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Thread Status: Active Total posts in this thread: 13
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TrustedDragon
Advanced Cruncher USA Joined: Feb 20, 2006 Post Count: 128 Status: Offline Project Badges: 
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I have noticed that this just started to happen during the last set of WU's I have got.
----------------------------------------Whenever I open the BOINC MANAGER the "To Complete" times starts going up! So far I have notice it on my Dell Laptop when it's running the "za" WU's. Last time I had 2 WU's I had to reset because they wouldn't run at all. One got to 44% completed and stopped. Any ideas on what is wrong?  [Edit 1 times, last edit by TrustedDragon at Jul 2, 2006 12:02:01 PM] |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
A phenomena when the HPF1/2 including these ZAxxxx work units are split in fixed chunks **, sometime 2.5%, sometimes 5% even 9.1% and anything in between, depending on how many the WU is split up in . BOINC is not very good at estimating, thus if the % progress does not go up until the current chunk is finished, it in fact continues to extrapolate time progressed against % progressed. As soon as HPFs like Zaxxxx do complete a chunk, the time to complete will reduce in bounds, then the whole thing starts all over again until 100% done.
----------------------------------------Nothing is wrong, long as the job is a HPF2 5.07 (see program column). A chunk can sometimes take a few hours. No chunk 'folds' the same or easy way. The previous version 5.06 had a few bugs fixed......see other threads on the subject in this forum. ** Chunks finish with a so-called Check-point, which is when its saved. When job is interrupted it will skip back to the last checkpoint saved, so that you dont have to process it all over again.
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 5 times, last edit by Sekerob at Jul 2, 2006 12:21:50 PM] |
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TrustedDragon
Advanced Cruncher USA Joined: Feb 20, 2006 Post Count: 128 Status: Offline Project Badges:
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Does this mean everytime I open the BOINC Manager it stops?
----------------------------------------This is only happening on 1 of the 2 PC's that I run WCG on. It don't do it on the desktop. |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Can you describe what you mean with 'stopping when BOINC manager is opened'
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WCG
Please help to make the Forums an enjoyable experience for All! |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
TrustedDragon, I know what's going on here.
BOINC Manager doesn't communicate constantly with the client. When you open the Manager, it takes a couple of seconds to get up to date information from the client. At that time, the Manager can provide more accurate completion estimates, and you see the numbers jump. If the completion estimate continues to rise, it just means the work unit has stalled (as Sekerob describes). This is normal, and the work unit will move on as soon as it can. It is impossible to calculate how long a work unit will take, but BOINC and WCG do their best to provide an estimate. |
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TrustedDragon
Advanced Cruncher USA Joined: Feb 20, 2006 Post Count: 128 Status: Offline Project Badges:
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OK, let me see if I can make this a bit clearer.....
----------------------------------------I have 2 computers running WCG. One is a Dell Desktop and the other is a Dell Laptop. When I open the BOINC Manager on the Dell Desktop everything is running normally; The "To Completion" time is counting DOWN and the "CPU Time" is counting UP and the "Progress" is going UP. When I open the BOINC Manager on the Dell Laptop I see the following: The "To Completion" is counting UP and the "CPU Time" is counting UP and the "Progress" STOPS! Based on what you folks have told me then both the Laptop and the Desktop SHOULD be doing the same thing. So I can only think that one of them is doing something WRONG! |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Your machines are working on different work units. Don't expect them to behave the same way.
Let me try and explain a little more about how progress is monitored and predicted. Each work unit is split up into smaller chunks. When a chunk is completed, a checkpoint file is saved. Each chunk is assumed to be the same size. If one of the chunks takes a lot longer to complete, then the predicted progress will "stick" at the end of the chunk, until the checkpoint is actually reached, and we can start counting again. If it seems like a chunk is taking forever, eventually a failsafe will kick in and give up on that chunk, and again you will move on. We have had a few reports recently of work units sticking, but these work units have failed right at the beginning. Those problems are being addressed, but your issue seems to be perfectly normal and nothing to worry about. |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
I would not be surprised from what TrustedDragon describes in the second instance, that one machine is working on FAAH and the other on a HPF 1/2. Both behaviours are normal....unless Progress does not move for 24 hours
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WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at Jul 2, 2006 10:30:35 PM] |
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TrustedDragon
Advanced Cruncher USA Joined: Feb 20, 2006 Post Count: 128 Status: Offline Project Badges:
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OK, Both PC's are running the same type of files in fact at this time the Desktop is doing 2 WU's
----------------------------------------I see what you mean now because the Desktop is now doing a faa file and a za file. The za file is acting like the Laptop where the faa file is running normal.... ok this is going to take some getting use to! This means anytime the BONIC Manager is used to check the status of work needing to be uploaded will prolong the work for any za file or files as in the case of my desktop. BTW: My desktop is a D820 duel core which means it is doing 2 WU's at a time. Not always on the same project. Sometimes it will be doing just WCG or S@H or SIMAP or any two of them could have a WU running. Thanks for your help! |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
BOINC Manager does not affect work unit progress. I really don't know how to say it more clearly.
Bear in mind that if you are project sharing, then if a work unit is swapped out before it reaches a checkpoint, then progress since the previous checkpoint will be lost. You should set your "Switch between applications every: n minutes" setting to a high value (such as 360) to avoid this problem. You will still lose work, but not so much. |
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