Occupancy Math on the AMD MI355X GPU (CDNA4): A From-First-Principles Guide
Ask a GPU kernel engineer how their kernel is doing and occupancy comes up within a sentence or two. It’s the number everyone quotes and the dial everyone reaches for — and, in our experience, the metric people understand least. Most treat it as an opaque percentage the profiler hands back. It isn’t. Occupancy is fully derivable by hand from a kernel’s resou
