How can I measure the communication time between my python and c++ code?

[saffyhala]

Hi everyone,
I'm working on a cache memory simulator written in C++. As part of the logic, I call a Python function using PyBind11 to integrate a machine learning model built with PyTorch. However, I've noticed that running the simulator with this Python integration is about 4x slower compared to running it without PyBind.

I suspect that the slowdown is due to the communication overhead between C++ and Python. How can I accurately measure this overhead? Are there any tools or profiling techniques that could help diagnose the issue?

Any suggestions would be greatly appreciated