I have a laptop with a nice processor I would like to use for BOINC. However, it is quite noisy when the GPU is running. I can suspend the GPU for this computer by selecting "Suspend GPU" in the Activity menu of the client, however BOINC still gets new GPU units (that will never run).

How do I prevent new GPU tasks for only this one computer? I do not want to disable GPU tasks for all computers.

BOINC allows for the making of different venues (or locations) with different preferences. You make these on the project's preferences pages.

Then set that laptop to that specific venue and in the project preferences pages specify not to use the Nvidia, ATI or Intel GPU, whichever applies.

So go to the project's web pages, your account, project preferences.
Click any of the Add separate preferences for home, work or school.
Edit those, and take the check mark off of the correct GPU. Make sure that the Use CPU is checked. Best also uncheck "If no work for selected applications is available, accept work from other applications?" as this will sometimes still allow GPU work. Save changes to the web preferences.

Go back to your account, view your computers, click on the Details link for the computer in question, scroll all the way down and change its location to that of the preferences you just added. Click Update.

That's about it. If you want to you can add separate computing preferences for the laptop, but you can also add these through the local advanced preferences (BOINC Manager->View->Advanced view->Tools->Computing preferences...)

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Thank you very much for your quick reply. I will set this up when I get home.