Hi, I have a Dell XPS 15z and am doing some pretty resource-heavy CUDA GPGPU development. I have both a GeForce GT 525M and internal Intel graphics. I run Ubuntu 12.04.
If I run a CUDA binary without optirun, Ubuntu fails to detect a CUDA device (I'm guessing because I have bumblebee-nvidia and not generic nvidia installed?). However, when I run *with* optirun, an X server starts on the GPU and my code times out because of the watchdog timer. I'm looking for a way to get around the watchdog timer, by either: 1.) Powering up the GPU and loading the drivers without starting an X session (No display, no watchdog) 2.) Powering up the GPU and starting an X session, but disabling the watchdog timer in that session (I hear there's a global flag, but not sure how to unset it in a headless X session) Any ideas? Thanks, Imogen Wright SANBI University of the Western Cape Cape Town South Africa
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