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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: Single task at a time |
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Thread Status: Active Total posts in this thread: 8
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi guys,
I would like to know how to setup BOINC to only start only one task at a time and use more CPU time... For now it starts 8 tasks and run them at 13% each. It's great for small tasks but I would prefer ending one task fast and start another instead of not being sure to end 8 tasks… TY! |
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges: 
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I am afraid it is not possible. AFAIK, every task uses 1 CPU thread (the only exception are some of MilkyWay WU's). It is possible to set to run only 1 tast at the time, but it will still utilize 13% of your CPU.
----------------------------------------Cheers   Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006  [Edit 1 times, last edit by branjo at Oct 24, 2013 3:17:01 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Since all WCG tasks are single threaded, it barely makes a difference if running 1 at the time or in your case 8. Each of the tasks uses all possible spare cycles of 1 processor. 8 tasks use 8 processors.
----------------------------------------13% is actually 100% of one processor thread. This is the way Windows shows it. On Linux you'd see [near] 100% for each processor thread, so with 8 threads you'd see a total of 800%. [Edit 1 times, last edit by Former Member at Oct 24, 2013 3:20:31 PM] |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Ok ty, so if I understood I have to reduce the maximum of cores I want to share if I want 4 tasks instead of 8. But these 4 won’t use more than 13% because this is 100% of a core.
----------------------------------------[Edit 1 times, last edit by Former Member at Oct 24, 2013 4:48:16 PM] |
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deltavee
Ace Cruncher Texas Hill Country Joined: Nov 17, 2004 Post Count: 4886 Status: Offline Project Badges: 
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Zearys, Do you have an 8 core machine or is it a 4 core with multithreading? If it is the latter you may be able to turn off multithreading in your BIOS and run just the 4 cores/threads. Each would then use 25%.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
I have a 4 core with multithread.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hello Zearys,
If you set My Grid - Device Manager - (Selected Profile) to run only 50% of your cores, your total throughput will decrease but each project will run faster since you will be dedicating a core to each work unit. Lawrence |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Thanks a lot lawrencehardin that what I wanted to do!
Thanks to the other replies too, look like it's a fast community! |
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