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World Community Grid Forums
Category: Completed Research
Forum: The Clean Energy Project - Phase 2 Forum
Thread: Run times of application always shorter that oribinally posted |
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Thread Status: Active Total posts in this thread: 2
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wetlandstom
Cruncher Joined: Mar 29, 2012 Post Count: 4 Status: Offline Project Badges: 
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My computer is running 4 applications at a time, and I usually receive one from "The Clean Energy Project Phase 2" per day. The estimated times for completion varies, of course. But quite often the actual calculation times are much less than the estimated "to Completion" time when the application is sent to my computer. I am wondering why this is. Thanks.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello wetlandstomm,
This is because of your Duration Control Factor (DCF). The server guesses how long the work unit should take on a standard computer and your DCF corrects this. If your computer normally takes twice the time the server guesses, then your DCF will double the estimated time. Some complications: in order to keep your buffer from overfilling, your DCF gets larger very quickly but will shrink very slowly. If the server underestimates the time 1 unit will take, then your DCF will overestimate the time necessary for additional work for a long time. Which is what you say is happening now for CEP2. We used to have 1 DCF for all WCG projects, but now we have a separate DCF for each project. You can edit the file in which these DCF values are stored, but I recommend against it, Lawrence |
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