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World Community Grid Forums
Category: Completed Research
Forum: Drug Search for Leishmaniasis Forum
Thread: Looong running WUs |
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Thread Status: Active Total posts in this thread: 117
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coolstream
Senior Cruncher SCOTLAND Joined: Nov 8, 2005 Post Count: 475 Status: Offline Project Badges: 
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Not wanting to hi-jack the thread, but since I updated BoincManager to 6.10.58, I find it often loses contact with localhost and fails to update resulting in my having to exit and start it up again. The tasks keep running, it's just the mananger itself which seems to break.
----------------------------------------These days, the only reason I use it is to get the shortcut to 'My Grid'. For everything else, I can access and control other machines with BT. It sure makes micromanagement of several machines so much easier.  Crunching in memory of my Mum PEGGY, cousin ROPPA and Aunt AUDREY. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
What is BT?
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3265 Status: Offline Project Badges: 
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Boinctasks I suppose
----------------------------------------AMD Ryzen 5 1600AF 4C/8T 3.2 GHz - 85W AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W Intel Z3740 4C/4T 1.8 GHz - 6W |
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RMau
Cruncher Joined: Feb 6, 2008 Post Count: 44 Status: Offline Project Badges: 
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Here is an observation that I made today that might be useful to the folks looking into how these work units run.
----------------------------------------I powered up my Ubuntu 11.04 machine this morning. It is an AMD-64, quad core machine. All it does is run WCG. When I started BOINC this morning, the first two WUs to download showed estimated completion times of 7-ish hours. The third and fourth WUs to download showed estimated completion times of 11-ish hours. The only change in the machine between the first two WUs and the last two WUs was that the the first two were running before the last two completed downloading and starting. All four are DSFL_00000007_0000035_xxxx Here is a screenshot of the four WUs so you can see the times.  Edit - The top WU on the list, 0506, finished in 07:10:32. Edit 2 - WU 0624 finished in 07:56:42. WU 0369 in 10:14:02 and WU 0563 in 12:23:17. I only allowed one additional WU on this machine. So at the end, there were fewer tasks running than there are cores in the CPU. Rick  [Edit 3 times, last edit by RMau at Sep 7, 2011 12:43:24 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Depends on the time of receipt of the first 2 versus the last 2 (not shown in screenshot). TTC (Time to complete) is a dynamic value based on current DCF (Duration Correction Factor) after last task completions and the FPOPS number included in the last received tasks. FPOPS is also a dynamic value that is set at the servers derived from most recent returned work durations.
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Crystal Pellet
Veteran Cruncher Joined: May 21, 2008 Post Count: 1294 Status: Offline Project Badges: 
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....The tasks keep running, it's just the mananger itself which seems to break. These days, the only reason I use it is to get the shortcut to 'My Grid'. For everything else, I can access and control other machines with BT. It sure makes micromanagement of several machines so much easier. [ot] With BT you can access 'My Grid' too. Didn't you discover that? Right click on the WCG project or on any WCG task. From WWW you can select 'My Grid'. [/ot]  |
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RMau
Cruncher Joined: Feb 6, 2008 Post Count: 44 Status: Offline Project Badges:
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The four tasks were downloaded one at a time. ie, four separate 'Request for New Tasks' between my Ubuntu machine and the WCG servers.
----------------------------------------First download started at 09:22:20 AM EDT. Fourth task started at 09:28:03 AM EDT. So, the servers are assigning values that have such a substantial impact on run times, within a six minute window? Rick |
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KWSN - A Shrubbery
Master Cruncher Joined: Jan 8, 2006 Post Count: 1585 Status: Offline |
The server assigned value has no impact on runtime, it's just a more updated estimate based on recently returned results.
---------------------------------------- Distributed computing volunteer since September 27, 2000 |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Oddly, I am only seeing a slight increase in runtime for target 7 WU's on Ubuntu. They seem to be running around 8 hours for me, on a 2.40 GHz (quad core) processor. Are those that are seeing extremely long runtimes running Windows, or are some of you also running Linux?
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wplachy
Senior Cruncher Joined: Sep 4, 2007 Post Count: 423 Status: Offline |
I'm seeing them on both Windows and Ubuntu.
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Bill P
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