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World Community Grid Forums
Category: Completed Research
Forum: The Clean Energy Project - Phase 2 Forum
Thread: Get more than one task |
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Thread Status: Active Total posts in this thread: 10
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jc209964
Cruncher Joined: Feb 4, 2012 Post Count: 5 Status: Offline Project Badges: 
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Hi, BOINC doesn't seem to be downloading more than one task for The Clean Energy Project - Phase 2. Would love to get all my CPUs onboard this one. Is there a setting I need to change?
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Yes, near the bottom of your device profiles is a setting for the number of tasks for CEP, default is one
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges: 
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Go to http://www.worldcommunitygrid.org/ms/device/viewDevices.do , click the Selected profile associated with your computer and follow Scribe's instructions
---------------------------------------- Cheers   Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006  |
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Seoulpowergrid
Veteran Cruncher Joined: Apr 12, 2013 Post Count: 799 Status: Offline Project Badges: 
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Thanks for the information.
----------------------------------------And I should ask at the same time. By changing the profile on one of my machines, does that make it cancel the WUs for projects I am disconnecting from or will the ones I have finish themselves out, but then no new ones come? Cheers~  [Edit 1 times, last edit by Seoulpowergrid at Jun 3, 2014 9:02:44 AM] |
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges:
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Don't worry, they will finish but new ones from disconnected sub-project will not be downloaded (but you have to uncheck "If there is no work available for the project(s) I have selected above, please send me work from another project" in that profile).
----------------------------------------Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006 [Edit 1 times, last edit by branjo at Jun 3, 2014 9:20:35 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Keep in mind that CEP2 is kind of hard on your drive. That's why the default setting is one. It's best to keep an eye on the log. If you see tasks being restarted, than it's too much for your device. Lower the number of running CEP2's until you see no more restarts.
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Paul Schlaffer
Senior Cruncher USA Joined: Jun 12, 2005 Post Count: 231 Status: Offline Project Badges:
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Keep in mind that CEP2 is kind of hard on your drive. That's why the default setting is one. It's best to keep an eye on the log. If you see tasks being restarted, than it's too much for your device. Lower the number of running CEP2's until you see no more restarts. I have done a LOT of testing in this regard. My 16 core system and 2 quads are 100% CEP. From what I have found is you should have no problem running 4 concurrent work-units on a modern 7200 rpm hard drive. For those technically inclined you can monitor your queue depth and response times, however I would not worry about this unless you notice a system lag while performing other work. The project scientists have document with the optimal settings being 4 per hard drive. Edit: Added link (see tips and tricks) http://cleanenergy.molecularspace.org/participate/  “Where an excess of power prevails, property of no sort is duly respected. No man is safe in his opinions, his person, his faculties, or his possessions.” – James Madison (1792) [Edit 1 times, last edit by Paul Schlaffer at Jun 4, 2014 12:45:52 AM] |
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jc209964
Cruncher Joined: Feb 4, 2012 Post Count: 5 Status: Offline Project Badges:
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Thanks, guise!
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Keep in mind that CEP2 is kind of hard on your drive. That's why the default setting is one. It's best to keep an eye on the log. If you see tasks being restarted, than it's too much for your device. Lower the number of running CEP2's until you see no more restarts. I have done a LOT of testing in this regard. My 16 core system and 2 quads are 100% CEP. From what I have found is you should have no problem running 4 concurrent work-units on a modern 7200 rpm hard drive. For those technically inclined you can monitor your queue depth and response times, however I would not worry about this unless you notice a system lag while performing other work. The project scientists have document with the optimal settings being 4 per hard drive. Edit: Added link (see tips and tricks) http://cleanenergy.molecularspace.org/participate/ Sweet, I didn't know about the bottlenecks/performance degradation due to disk I/O. Thank you for linking the tips & tricks, something I should have read much earlier on  |
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Mike.Gibson
Ace Cruncher England Joined: Aug 23, 2007 Post Count: 11791 Status: Offline Project Badges: 
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Hi, folks
The main problem that I have found is the demand for RAM. That seems to have stepped up to 1.28 GB per WU. I have no problem running 8 at the same time on my quad now that I have 20 GB, but had to restrict to 3 on the previous 4 GB. I have been given a file which will do that if anyone would like it. Mike |
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