I have been running a Python script for extended amounts of time that relies on the pyCUDA module.
On two occasions, the desktop has become locked up and totally unresponsive, except, oddly, through SSH. Logging in remotely shows that the Python script is no longer running when the system is (locally) locked up. Because this Python script runs for a long time, I haven't been around to see when exactly it locks up. It has never locked up without the script having run.
Running 12.04 with a GeForce 460 GPU. The Python script doesn't make one CUDA call that lasts for over an hour, but hundreds that last for less than 30 seconds, so I don't think the GPU is locking up the system. Thanks for any ideas.