NVidia

To make sure that the CUDA (graphics card computation system) is working (currently only available on Taro), check the following:

• When a new kernel is install, the NVidia kernel driver also needs to be updated. This is done by re-running the NVidia installer in /root/CUDA_INSTALL. Run the one with the highest version number.
• The permissions on the /dev/nvidiactl and /dev/nvidia* devices needs to allow users to read them. To set these automatically create a file named nvidia in /etc/modprobe.d/ (if it isn't there already) any put this in it: (The NVreg_DeviceFileGID number should be the GID for the video group)

options nvidia NVreg_DeviceFileUID=0 NVreg_DeviceFileGID=98 NVreg_DeviceFileMode=0666

• Make sure users that want to use the CUDA system are in the video group.
• I am not sure if this is still relevant, but you used to need to run X to use CUDA. This seems to no longer be the case, since I can use it and X is not running.