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World Community Grid Forums
Category: Retired Forums
Forum: UD Windows Agent Support [Read Only]
Thread: Apparent reduced throughput after shutdown and reboot |
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Thread Status: Active Total posts in this thread: 7
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mpb
Cruncher Joined: Nov 16, 2004 Post Count: 2 Status: Offline Project Badges: 
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I understand the problem of corrupt tasks being discarded, but can anyone tell me why a normal running task sometimes shows that it has completed less throughput after a normal computer shutdown. For example, the task shows 80% completion before shutdown and then only 55% when the computer is restarted. The computer shuts down cleanly (no hard crash out of the OS etc) and reboots cleanly and the agent loads OK. Should I shut down the task manually before logging off?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
This is checkpointing. Each work unit saves its progress as frequently as possible. Clearly, yours wasn't able to save anything between 55 and 80%.
By the way, you can edit your posts, you don't have to delete them and repost. |
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mpb
Cruncher Joined: Nov 16, 2004 Post Count: 2 Status: Offline Project Badges:
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Thanks. Can you force a checkpoint? Does exiting the application do this?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Sadly, no. It's also not easy to see when a checkpoint takes place. Best not to worry about it.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
The UD Application View shows each check point. When the green line reaches the right edge and starts over, a check point is written. After the first check point, there is a red line on the graph. Usually several check points are written every hour, but some work units produce very few check points. A very few never write a check point.
Lawrence |
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Sekerob
Ace Cruncher Joined: Jul 24, 2005 Post Count: 20043 Status: Offline |
Been maintaining a table of differently segmented FAAH (think we talk Fighting Aids???)...... not seen any, nor have others ever mentioned a FAAH WU recursing from 80 to 55%.....there is simply no way of divvying up something in equal portions, save a segment, then go back 25% to 55% i.e. there is no rhyme to this.
----------------------------------------Help Defeat Cancer until now are 4 segments i.e. 25%. If interrupted, they do go back to 0, 25, 50, 75% respectively. Anyone else seen this who happens to read this post? PS: Table here: http://www.worldcommunitygrid.org/forums/wcg/...thread=8331&offset=14 For saving your work and resume up to the second, see posts related to proper PC hibernation or this: http://www.wcgwiki.org/en/general/hibernate.cfm
WCG
----------------------------------------Please help to make the Forums an enjoyable experience for All! [Edit 1 times, last edit by Sekerob at Oct 7, 2006 11:07:25 PM] |
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BobCat13
Senior Cruncher Joined: Oct 29, 2005 Post Count: 295 Status: Offline Project Badges: 
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Help Defeat Cancer until now are 4 segments i.e. 25%. If interrupted, they do go back to 0, 25, 50, 75% respectively. I had a Boinc HDC WU reset from ~9% back to 6.250% on a reboot last night. |
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