CPU working for S@h when i am using the computer even after both web and local preferences say "dont use CPU when computer is in use"


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Questions and Answers : Preferences : CPU working for S@h when i am using the computer even after both web and local preferences say "dont use CPU when computer is in use"

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Martin Klosi
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Message 862045 - Posted: 4 Feb 2009, 22:31:50 UTC

hello, i am using BOINC 6.4.5 and i have a problem with it running sometimes even if i am using the computer even after preferences explicitly say it shouldn't be doing that (as explained in the title). it doesn't do it all the time, for example if i've just started BOINC it will say suspended and really be suspended, but if i let it 6 minutes (inactive time before processing starts) even after coming out from it (moving mouse), SOMETIMES it will remain working and i have to manually shut down BOINC in order to use my computer again. the job that does this is always SETI@home Enhanced 6.08 (cuda). I say 'sometimes' - usually if i let it run more then 4-5 hours. if i just let it run for a short period of time it will actually stop working as soon as i start using the computer. What could it be, ... how come it doesnt listen to the preferences. is it a bug?

thanks

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Message 862048 - Posted: 4 Feb 2009, 22:39:37 UTC - in response to Message 862045.

You could say it's a bug, but it's more of a development oversight. When BOINC does CUDA and you suspend BOINC, the task in the GPU will continue to work, as BOINC doesn't keep track of what the GPU is doing. Not yet. That's being implemented in the next generation of BOINC.

So as you noticed, the only way to stop a CUDA task with BOINC 6.4.5 is to stop BOINC and restart it. When suspended before you exit it, upon restart it will stay suspended until you tell it to continue.
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Martin Klosi
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Message 862051 - Posted: 4 Feb 2009, 22:43:29 UTC

but how did 'cuda' got installed into my system anyway. i truly dont remember downloading the special CUDA version of BOINC. i downloaded the regular version.
Never mind, thanks for the info

check out my other thread if u wish :) :
http://setiathome.berkeley.edu/forum_thread.php?id=51848

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Message 862063 - Posted: 4 Feb 2009, 23:13:25 UTC - in response to Message 862051.

BOINC 6.4.5 (and above) is the version that enables Seti to do work on CUDA capable cards when they are found in the computer. You can disable the use of the GPU through your project preferences. Just set "Use Graphics Processing Unit (GPU) if available" to no (take the check mark off). Then save the changes to the web site and update the Seti project through BOINC Manager.

Any work still detailed to your GPU on your computer will continue to run, but you will not get new work for the GPU after this.
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Jord

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Questions and Answers : Preferences : CPU working for S@h when i am using the computer even after both web and local preferences say "dont use CPU when computer is in use"

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