How do I only use 3 cores on a quad core?

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kingfurball

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Joined: 23 Mar 11
Posts: 1
United States
Message 37260 - Posted: 23 Mar 2011, 4:46:48 UTC

Hi Folks,

Been running Boinc for years now, been using Seti since classic was standard so that has been well over a decade. Currently running Climate prediction, Seti, Milkyway, GPUGrid, and Einstein. I have had a lot of times when I have to turn off BOINC because I just need more of my computer for me. This is just a bit of a pain and what is worse is that I will forget to turn it back on. I think 99% of the problems could be solved if I could tell BIONC to only use 3 out of 4 cores or 1 out of 2 cores on my dual core, when I am using the computer - it can have it all when idle. I just can't find the settings. I found one that made everything seesaw in the task manager. I have been searching for help on this for quite a while, so any help is appreciated. Thank-you so much King Furball






Athlon x2 5000 2.0 Overclocked to Athlon Phenom X4 with 6mb l3 cache 2.7 GHZ with Geforce GTX 465
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Profile Jord
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Netherlands
Message 37261 - Posted: 23 Mar 2011, 6:17:45 UTC

1. Use the "On multiprocessors, use xxx% of the processor Enforced by 6.1+" option to set the amount of CPUs you want to use. In case of a quad core and you want to use 2 or 3, 50% or 75%. These values are integer numbers, meaning that when you fill in any value between and including 75 and 99, that 75% of total CPUs will be used.

2. You could also opt for using a cc_config.xml file with the exclusive_* options. That way, whenever any of the programs you exclude are in memory, BOINC pauses work completely, to continue it after you exited the exclusive program.

E.g.
<cc_config>
<options>
<exclusive_app>scalc.exe</exclusive_app>
<exclusive_app>utorrent.exe</exclusive_app>
<exclusive_gpu_app>notepad.exe</exclusive_gpu_app>
</options>
</cc_config>

With the above example, whenever I would open Open Office Calc, or uTorrent, BOINC would suspend calculations on the CPUs, while opening Notepad would stop work on the GPU only. Only for as long as I have any of those programs open.

One line per exclusive application.
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Message boards : Questions and problems : How do I only use 3 cores on a quad core?

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