I’ve been trying the past few days to under clock my GPU (to test whether my kernel is bandwidth limited or compute limited). I remember that there used to be an option inside nvidia-settings to do it, but it’s missing now and I can’t seem to get it back.
Enabling coolbits doesn’t seem to do a thing.
Trying to change the clocks from the command line also doesn’t see to have any affect. nvclock is in the same place (doesn’t even get correct readings), nvidia smi also doesn’t seem to get the correct readings.
The machine is running debian unstable with kernel 3, tried driver versions 280 and 285 (earlier ones don’t install on this kernel). Tried on several different machines, but this particular desktop is running a GTX450 and a Tesla C1060.
Will be happy for any pointers.