Originally Posted by Lost Dog
As much as I'd like to see this work if you run it without arguments it states it's not supported by most GPU's:
NVIDIA System Management Interface -- v2.0
NVSMI provides diagnostic information for Tesla and select Quadro devices.
The data is presented in either plain text or XML format, via stdout or a file.
NVSMI also provides several management operations for changing device state.
Tesla: S1070, S2050, C1060, C2050/70, M2050/70/90, X2070/90
Quadro: 4000, 5000, 6000, 7000 and M2070-Q
Other: All other products are unsupported
Which is just an artificial limitation, it used to work in the past until it got "fixed" by restricting it to the advertised gpus.