command not found: nvidia-smi

I have installed CUDA7.5 on my hackintosh. It works fine to compile the examples and pass the test.
But I cannot find the nvidia-smi for checking my GPU(GTX970). I have check the directory /usr/local/cuda/bin
and /usr/local/cuda/tools.

I also tried reinstall cuda7.5, that doesn’t help.
Anyone can help?

The nvidia-smi utility is based on the NVML library. Per this previous answer, NVML is not supported on OS X: