How to parallel python function

[sun-rs]

Just learning pyo3 to wrap some python function and run in rust. Assume I have 10 python function use same data source, could I make them do the calculation in parallelism by pyo3?

[davidhewitt]

It sounds like you're asking whether PyO3 can let you run multiple copies of a Python function in parallel. The answer, is that just like in Python, you would have to use subprocesses with each running their own interpreter (e.g. via multiprocessing module).

What PyO3 can do is let you write a single Python function which has a parallel implementation in Rust, such as this example.

If it's a long-running algorithm then you can also use allow_threads to release the GIL and allow other Python code to make progress at the same time.