This is great. Are there any features you are looking to add? Would checking for bad memory blocks be useful? I've never seen it happen on a GPU but surely it must.
Is this entirely NVIDIA-specific, or can it do any diagnostics for other GPUs?
It's very much nvidia specific, not just using CUDA but the backing nvidia-specific management libraries.
Though I don't think there's anything particularly device-specific they're measuring, they're using the private nvidia interfaces to do so.
OP you should call that out a little more clearly that this is Nvidia only.