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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: CPU usage question |
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Thread Status: Active Total posts in this thread: 10
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platinumjsi
Cruncher Joined: Aug 12, 2010 Post Count: 37 Status: Offline Project Badges: 
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Ok a odd one this that I have just noticed, wondering if its normal?
----------------------------------------So today I installed a GPU in my rig and ran Collatz on it, I figured that dropping the CPU usage to 2 cores out of 4 would free up more than enough CPU time for the GPU. However firing it up the GPU was showing odd numbers, never maxing out ect. So I look in task manager and I see that there are 2 WCG processes going but each is using 40% CPU time. I thought that one unit used one core and no more so how can a unit be using 40% CPU time? Just two units were nearly maxing out my quad core chip, very odd? Is this normal?  |
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platinumjsi
Cruncher Joined: Aug 12, 2010 Post Count: 37 Status: Offline Project Badges:
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I would say on my other machine that has a 6 core 12 thread CPU all seems fine on there, 9 units is taking up just under 80% cpu load.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
You have a very special quad and/or a very special Windows. On mine the WCG worker process never-ever shows more than 25% [times 4 is 100% of overall CPU load]. On my octo the WCG process never-ever shows more than a rounded 13% [12.5% really, times 8 is 100% overall CPU load].
In a combined cc/app_config [See http://boinc.berkeley.edu/wiki/Cc_config.xml for possibilities], you can set how much the GPGPU process is allowed of the CPU... some are pretty NCI [Non-CPU intense], so much so that during the HCC GPGPU phase, members were able to set 4-8 to use a single CPU thread. No idea what Collatz uses of the CPU, but I'm rejecting the conjecture as being my times worth  |
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platinumjsi
Cruncher Joined: Aug 12, 2010 Post Count: 37 Status: Offline Project Badges:
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Seems to be a collatz issue, running Einstin it seems to work as expected, guess ill just run other projects on that GPU :)
----------------------------------------WCG is still taking up more CPU time than I would expect : https://i.imgur.com/4BFl0sF.png CPU is a i5 4590T |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
W8.1 I'm guessing. Together with the running WCG task there's only 3 BOINC processes running. Maybe the OS is allocating unused cycles, from maybe your CPU being hyperthreaded, but CPUBoss says it's not. [The Einstein have each half a CPU allocated]. Tested it on my octo, allowing only 7 BOINC processes and low/behold, the 12.5 jumped to 13.6% [Total 95]. Never knew and looking under the Performance tab, see total 96% being used, including system.
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platinumjsi
Cruncher Joined: Aug 12, 2010 Post Count: 37 Status: Offline Project Badges:
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Weird, yea my CPU is not hyperthreaded, tried running one unit on my 12 thread CPU here and it hit 11% CPU usage, must be a oddity of Windows I guess.
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fjgomezlo
Cruncher Joined: Oct 25, 2008 Post Count: 4 Status: Offline Project Badges: 
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Tengo problemas c26/10/2015 9:30:26 | | Starting BOINC client version 7.6.9 for windows_intelx86
26/10/2015 9:30:26 | | log flags: file_xfer, sched_ops, task 26/10/2015 9:30:26 | | Libraries: libcurl/7.39.0 OpenSSL/1.0.2a zlib/1.2.8 26/10/2015 9:30:26 | | Data directory: C:\ProgramData\BOINC 26/10/2015 9:30:26 | | Running under account Javier 26/10/2015 9:30:26 | | No usable GPUs found 26/10/2015 9:30:26 | | Host name: Javier1 26/10/2015 9:30:26 | | Processor: 2 GenuineIntel Pentium(R) Dual-Core CPU T4200 @ 2.00GHz [Family 6 Model 23 Stepping 10] 26/10/2015 9:30:26 | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss htt tm pni ssse3 cx16 nx lm tm2 pbe 26/10/2015 9:30:26 | | OS: Microsoft Windows Vista: Home Premium x86 Edition, Service Pack 2, (06.00.6002.00) 26/10/2015 9:30:26 | | Memory: 2.96 GB physical, 6.13 GB virtual 26/10/2015 9:30:26 | | Disk: 116.44 GB total, 18.80 GB free 26/10/2015 9:30:26 | | Local time is UTC +1 hours 26/10/2015 9:30:26 | LHC@home 1.0 | URL http://lhcathomeclassic.cern.ch/sixtrack/; Computer ID 9852505; resource share 100 26/10/2015 9:30:26 | rosetta@home | URL http://boinc.bakerlab.org/rosetta/; Computer ID 1117653; resource share 100 26/10/2015 9:30:26 | World Community Grid | URL http://www.worldcommunitygrid.org/; Computer ID 1035677; resource share 100 26/10/2015 9:30:26 | | General prefs: from http://www.malariacontrol.net/ (last modified 24-Feb-2008 13:16:09) 26/10/2015 9:30:26 | | Host location: none 26/10/2015 9:30:26 | | General prefs: using your defaults 26/10/2015 9:30:26 | | Reading preferences override file 26/10/2015 9:30:26 | | Preferences: 26/10/2015 9:30:26 | | max memory usage when active: 1517.97MB 26/10/2015 9:30:26 | | max memory usage when idle: 2732.34MB 26/10/2015 9:30:34 | | max disk usage: 19.48GB 26/10/2015 9:30:34 | | suspend work if non-BOINC CPU load exceeds 25% 26/10/2015 9:30:34 | | (to change preferences, visit a project web site or select Preferences in the Manager) 26/10/2015 9:30:34 | | Not using a proxy 26/10/2015 9:31:15 | | Suspending computation - CPU is busy 26/10/2015 9:31:26 | | Resuming computation 26/10/2015 9:31:47 | | Suspending computation - CPU is busy 26/10/2015 9:32:08 | | Resuming computation 26/10/2015 9:32:28 | | Suspending computation - CPU is busy 26/10/2015 9:32:38 | | Resuming computation 26/10/2015 9:32:59 | | Suspending computation - CPU is busy 26/10/2015 9:35:01 | | Resuming computation 26/10/2015 9:36:43 | | Suspending computation - CPU is busy 26/10/2015 9:41:35 | | Resuming computation 26/10/2015 9:41:45 | | Suspending computation - CPU is busy 26/10/2015 9:52:24 | | Running CPU benchmarks 26/10/2015 9:52:55 | | FP benchmark ran only 0.046800 sec; ignoring 26/10/2015 10:04:19 | | Resuming computation 26/10/2015 10:04:29 | | Suspending computation - CPU is busy on CPU |
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SekeRob
Master Cruncher Joined: Jan 7, 2013 Post Count: 2741 Status: Offline |
No Tengo la culpa
Don't hesitate to use more words to describe your problem. Much appreciated. This 26/10/2015 9:31:15 | | Suspending computation - CPU is busy 26/10/2015 9:31:26 | | Resuming computation Is a default setting suspend work if non-BOINC CPU load exceeds 25% , if your computer is 'Too' busy, BOINC pauses. You can increase this to 50 or 75%, or disable by setting the value to 0, but this means that you could start noticing BOINC is running while using the computer. |
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enels
Senior Cruncher Joined: Apr 25, 2008 Post Count: 286 Status: Offline Project Badges: 
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Your 4590T has a base of 2 GHz and turbos up to 3 GHz. This may show up as greater than 100% in task manager.
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fjgomezlo
Cruncher Joined: Oct 25, 2008 Post Count: 4 Status: Offline Project Badges:
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Thank you for your explanation
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