Earlier quoted context omitted.
yappi? https://bitbucket.org/sumerc/yappi/
> If you want to profile a multi-threaded application, you must give an entry point to these profilers and then maybe merge the outputs. It basically boils down to (currently) doing multiprocessing profiling is a giant pain in the ass, you have to manually attach the profiler yourself if you ever launch another process, and every profiled process produces it's own output file. It's not impossible , it's just very ann…
Multi-process (<~1M) profiling is obviously bread and butter in the HPC world. That's what the tools I referenced are for primarily. The more recent Python targeting may not be so solid, especially if there's no good launch framework to hook into, which would be a good reason for using MPI.