Which NVML API call do I use to set the SM clock of an NVIDIA GPU?

Developer Tools Other Tools System Management and Monitoring (NVML)
1

I’m trying to use libnvml “myself”, rather than nvidia-smi, to set the SM clock of my GPU.

I have no problem getting the current clock frequency with nvmlDeviceGetClockInfo, but - I can’t figure out how to do the opposite: Set the frequency. There’s nvmlDeviceSetGpuLockedClocks(), but that’s not it (i.e. when I call it, and query again, I get the same frequency as before I made the call). And the other device commands don’t seem like they’re what I need.

So, which API call is it? Or - could it be that this isn’t supported?

(PS - Posted this on StackOverflow but didn’t get an answer.)