Writing CUDA code on Mac and missing your beloved nvidia-smi program terribly? Check cuda-smi, my simple utility program for almost the same purpose. It runs on Mac, of course.
Well, to be honest, cuda-smi can’t show what programs are using GPUs. It can only show memory capacity and how much memory is available. When I have some time, I may try to upgrade it further.
For the moment, I am quite happy with it, because it gives me a way to at least monitor how much GPU memory my program is using.