Do you know what you are actually stalled on? i.e. Memory or Instructions, if it's the latter you can probably eek out some more performance just by fiddling wi

Do you know what you are actually stalled on? i.e. Memory or Instructions, if it's the latter you can probably eek out some more performance just by fiddling with compiler flags (you'd be surprised simultaneously how clever and how utterly braindead some compilers are if you play with them on Compiler Explorer for a bit) Also, if you are running on Intel you might have some luck with Intel's profiling tools as, although I've never used them for python they are by far and away the best things in this area, they do support Python. I don't know what details they give you in from Python code directly, but if you've used perf to profile code at a low level before, vTune is like a Tom & Jerry shotgun in comparison.