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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: Control project work unit priority |
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Thread Status: Active Total posts in this thread: 14
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello,
I am currently running all available projects for WCG. I note that while I have a lot of two of the projects in terms of work units the clean energy project phase 2 will have 1 available work unit in my queue. Is there a way to make sure 1 of the work units being worked on is always the one from that project? I have a quad core processor so I want to have 1 core working on the energy project always (if available) and the other 3 can do whatever. Is that possible? Thank you, |
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges: 
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Hello Malander,
----------------------------------------You can increase the number of concurrent CEP2 tasks by going to Settings / Device Manager, open the Profile to which is your computer attached (usually "Default"), scroll down and change "Project Specific Settings / Number of workunits per host for The Clean Energy Project - Phase 2?" Set it to 3 for example. Than you have to create app_config.xml file and save it into WCG data directory - in Win 7 it is C / ProgramData (hidden by default) / BOINC / Projects / www.worldcommunitygrid.org app_config.xml should be: <app_config> Cheers and   Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006  [Edit 3 times, last edit by branjo at Oct 7, 2014 5:02:48 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello, I am currently running all available projects for WCG. I note that while I have a lot of two of the projects in terms of work units the clean energy project phase 2 will have 1 available work unit in my queue. Is there a way to make sure 1 of the work units being worked on is always the one from that project? I have a quad core processor so I want to have 1 core working on the energy project always (if available) and the other 3 can do whatever. Is that possible? Thank you, Yes you can in a very 'controlled' manner by employing the app_config.xml file which has to be stored in the wcg project folder. You can visit prior posts for samples. You set cep2 to 1 with the <max_concurrent> tag in app_config and select a multiple in the device profile, so that a cep2 in the queue buffer is always the oldest to start since basically the agent works on first in first out basis. This project has priority in the server feeder, i.e. any completed cep2 will first be replaced. Then you select the other projects of course, and these will fill the other threads. No need to specify those in app_config. A computational example. The buffer is 1 day deep and the runtime of cep2 is 5 hours average. 24 / 5 is 5. Add to that 1 i.e you specify 6 in the device profile, so that there is contingency for the variability of runtimes. Any other work will be fetched and man the other threads. If you don't see a cep2 running, increment the device profile setting by 1 etc, so the oldest in cache always is a cep2. Play and learn |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I'm thinking maybe I can free up space for cep2 if I restrict the max number of units in app_config.xml file for the other projects. Assuming that it will work that way what is needed to get the system to recognize any changes I have made to the app_config.xml file? For example, is it just a matter of opening the BOINC program itself and updating the project?
----------------------------------------[Edit 1 times, last edit by Former Member at Oct 8, 2014 12:55:49 AM] |
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deltavee
Ace Cruncher Texas Hill Country Joined: Nov 17, 2004 Post Count: 4888 Status: Offline Project Badges: 
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...to recognize any changes I have made to the app_config.xml file? For example, is it just a matter of opening the BOINC program itself and updating the project? In Boinc Manager advanced view, click on the Advanced tab and then click on Read Config Files. |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thank you everyone!
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
As a follow-up. So I can control max number of work units being run from one project to try to make sure other projects are always running units. I am finding that one project is pretty much overrunning my queue. Is it possible to limit the number of work units allowed in my queue for a specific project so I can get more from the other projects?
----------------------------------------[Edit 1 times, last edit by Former Member at Oct 12, 2014 2:48:05 AM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Reread my post. If you do as suggested, cep2 will -not- be overrun. Do -not- specify any other project in app_config, just cep2, as it risks idling cores when the buffer is rated by agent as full, but not enough work on board of the other specific sciences.
Except for cep2 there is no quantitative control of the other sciences (wish-listed as a feature of app_config). They now come on the basis of whatever project selected and whatever is available in feeder at moment of work fetch call. |
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deltavee
Ace Cruncher Texas Hill Country Joined: Nov 17, 2004 Post Count: 4888 Status: Offline Project Badges:
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As a follow-up. So I can control max number of work units being run from one project to try to make sure other projects are always running units. I am finding that one project is pretty much overrunning my queue. Is it possible to limit the number of work units allowed in my queue for a specific project so I can get more from the other projects? Malander, I assume you want to limit mcm1 since it currently seems to have a much higher priority in the feeder than faah. This app_config will limit you to running only one cep2 and two mcm1 wus. Note that this does not affect how many of each are in your cache, only how many are running concurrently. You must make sure your cache is large enough to have these wus always ready to run. This can take a little trial and error tuning to your cache. <app_config> <app> <name>cep2</name> <max_concurrent>1</max_concurrent> </app> <app> <name>mcm1</name> <max_concurrent>2</max_concurrent> </app> </app_config> [Edit 2 times, last edit by deltavee at Oct 12, 2014 2:53:25 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
ya the main thing I was hoping to do now was allow more faah projects in while not totally cutting off mcm1 project. I found that mcm1 was filling my queue to the point I turned it off. Perhaps you are correct that I just need to increase the size of the queue itself. Would be cool if you could limit the number of each project in the queue so for example you could say I only want 50 of this project at a time and 40 of that one etc... Love to know if that ever becomes an option
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