Only using 2 of 4 cores

Questions and Answers : Windows : Only using 2 of 4 cores
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Billy

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Message 922916 - Posted: 1 Aug 2009, 8:18:32 UTC
Last modified: 1 Aug 2009, 8:22:46 UTC

Message log says my preferences limit CPU's 2 2 of 4. But I checked the preferences and it says "in multi processor systems use 100%' Why is BOINC not wanting to use all 4??


8/1/2009 12:59:26 AM Benchmark results:
8/1/2009 12:59:26 AM Number of CPUs: 4
8/1/2009 12:59:26 AM 2475 floating point MIPS (Whetstone) per CPU
8/1/2009 12:59:26 AM 7436 integer MIPS (Dhrystone) per CPU
8/1/2009 12:59:28 AM Resuming computation
8/1/2009 12:59:34 AM SETI@home Master file download succeeded
8/1/2009 12:59:39 AM SETI@home Sending scheduler request: Project initialization.
8/1/2009 12:59:39 AM SETI@home Requesting new tasks for CPU and GPU
8/1/2009 12:59:44 AM SETI@home Scheduler request completed: got 2 new tasks
8/1/2009 12:59:44 AM SETI@home New computer location: home
8/1/2009 12:59:44 AM SETI@home General prefs: from SETI@home (last modified 11-Jan-2006 23:57:44)
8/1/2009 12:59:44 AM SETI@home Computer location: home
8/1/2009 12:59:44 AM SETI@home General prefs: no separate prefs for home; using your defaults
8/1/2009 12:59:44 AM Preferences limit memory usage when active to 1918.78MB
8/1/2009 12:59:44 AM Preferences limit memory usage when idle to 3453.80MB
8/1/2009 12:59:44 AM Preferences limit disk usage to 100.00GB
8/1/2009 12:59:44 AM Number of usable CPUs has changed from 4 to 2. Running benchmarks.
8/1/2009 12:59:44 AM Preferences limit # CPUs to 2
8/1/2009 12:59:44 AM Running CPU benchmarks
8/1/2009 12:59:44 AM Suspending computation - running CPU benchmarks
8/1/2009 12:59:46 AM SETI@home Started download of setiathome_6.08_windows_intelx86__cuda.exe
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Grant (SSSF)
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Message 922921 - Posted: 1 Aug 2009, 9:15:40 UTC - in response to Message 922916.  


On multiprocessors, use at most XXX% of the processors determines how much of the CPU time is spent processing work.

On multiprocessors, use at most X processors is what determines how many cores/CPUs is used for processing. That needs to be set to 4 (or more if you've got more).

Grant
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Profile BilBg
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Message 922929 - Posted: 1 Aug 2009, 11:03:41 UTC - in response to Message 922921.  

These are my (web) settings:

On multiprocessors, use at most ___ 16 processors
On multiprocessors, use at most ___ 100 % of the processors
Use at most ____________________ 100 percent of CPU time


 


- ALF - "Find out what you don't do well ..... then don't do it!" :)
 
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Profile Jord
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Message 922932 - Posted: 1 Aug 2009, 11:38:52 UTC - in response to Message 922929.  
Last modified: 1 Aug 2009, 11:39:47 UTC

On multiprocessors, use at most ___ 16 processors

This one is used to set the amount of processors you want BOINC to use on BOINC 5.10 and below.

On multiprocessors, use at most ___ 100 % of the processors

This one is used to set the amount of processors you want BOINC to use on BOINC 6.1 and above.

Use at most ____________________ 100 percent of CPU time

This one is used for CPU thermal throttling. Set to anything below 100% and BOINC will pause/resume the science applications for one or more seconds per minute. You'll see a see-saw graphic in Task Manager's Performance tab.
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John McLeod VII
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Message 922943 - Posted: 1 Aug 2009, 13:39:18 UTC

In your BOINC data directory, do you have a global_prefs_override.xml? (If youhave not found the global_prefs.xml file and the client_state.xml file, you have not found the BOINC data directory.


BOINC WIKI
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Profile arkayn
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Message 923005 - Posted: 1 Aug 2009, 17:39:56 UTC

Check this link and and make sure that you are using 100% of your processors.

Since it does not say reading preference override file, it is getting the info from the website.

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Questions and Answers : Windows : Only using 2 of 4 cores


 
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