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Posts by Nuadormrac

21) Message boards : Number crunching : Short deadlines-High priority-suspend Milkyway (Message 5210)
Posted 11 Sep 2008 by Nuadormrac
Post:
It finished in 6.5 hours in the end, it was a 372... Might be more hopeful though there's also several 373s Time will tell. The initial estimate did through it off by a lot though.
22) Message boards : Number crunching : Short deadlines-High priority-suspend Milkyway (Message 5208)
Posted 11 Sep 2008 by Nuadormrac
Post:
Apparently the server-supplied estimates weren’t adjusted to match; such is life in a test project … BOINC adapts to events like this over time, by adjusting the host’s Duration Correction Factor for the project, and its averages are biased to avoid downloading more work than it can handle.


Actually, as one who just connected and has no project debt, such was not the case. Due to the non-adjustment of the completion times server side, and being a new project in BOINC with no prior history to base things off of, it's estimated for an 8 min completion time, and 20 WUs were grabed all in < 1 min; pretty much on a go.

Thing is, it's looking like 12 hours or more to complete the first, albeit I'm basing this on 26.6% in just under 3.5 hr; I had to manually suspend all other projects and it will still expire on most of the WUs. Yes it takes time to sort itself out; but such is life when the initial estimates are off by a factor > 10:1. That's of course assuming the running WU is representative and others won't exit early. Current rate, 6 will complete; unless there's a lot of early abortions, or an optimized client one can throw on to make it complete those faster.

Over time it does adjust, though slowly on each crunched WU (yes, I've crunched LHC and some projects where early abortions aren't always that uncommon and the completion times from 1 unit to another can very wildly); but the manager liked to inch things, not assume the new WU length all at once. It does mean the manager will take awhile with over deadline units; if the initial value it is given, veries from estimated minutes, and really > 10 hrs... Now in the interum set "no new work" till it gets through these or the remainder expire, but rather expect it won't have hit correct estimate before next 3 day pull, even keeping all else suspended.


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