In W7, is there a way to use BOINC with more than one user logged in.
Logging in a second user removes the desktop and the GPU is no longer usable for BOINC.
I can't think of a way, but maybe someone else.....

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TThrottle The way to control your CPU and GPU temperature.
BoincTasks The best view of BOINC.
My other activities

Don't use fast user switching, as that uses the same internal videocard driver as remote desktop does. The one that doesn't know about CUDA, CAL or OpenCL.

Install BOINC with the 'allow other users to control BOINC' option and when you switch users, do so by logging off -> logging on. Yes, that takes a little longer, but it will allow BOINC to continue doing its work.

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When I tried this on Windows 7, I found I could crunch with the GPU after fast user switching, simply by shutting down the BOINC core client and restarting it. The key seems to be the line

16-Sep-2011 21:03:53 [---] Running under account Richard Haselgrove

in the startup messages: if that line matches the account of the foreground user, you get a GPU: but if you switch, so the BOINC user is in the background, you don't.

Whether there's any way of detecting a user switch, and automatically stopping/restarting BOINC when it happens, I wouldn't begin to guess.

Whether there's any way of detecting a user switch, and automatically stopping/restarting BOINC when it happens, I wouldn't begin to guess.

There is, and as far as I know it's built into the present BOINC versions. It is the effect of the GPU going missing as that's the only thing that's affected by the fast user switching. So that part of BOINC will be disabled. If all is well, CPU crunching will continue.

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BoincTasks now includes, user logout/login detection.
It will shut down and restart the BOINC client automatically.
This is still a beta version, so report any problems.

BoincTasks 1.21http://www.efmer.eu/boinc/boinc_tasks/download.html

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TThrottle The way to control your CPU and GPU temperature.
BoincTasks The best view of BOINC.
My other activities

That won't make users with long running tasks, that don't checkpoint very often, happy I assume....