Python 3.12

[johnnynunez]

Checklist

• I added a descriptive title
• I searched open requests and couldn't find a duplicate

What is the idea?

Python 3.12 support

Why is this needed?

Could Python 3.12 Enhance ONNX's Multithreading Capabilities?

The official release of Python 3.12 is fast approaching, scheduled for October 2, 2023. What heightens my anticipation even more is Python 3.12's potential to significantly improve ONNX's multithreading performance.

For a considerable amount of time, Python's Global Interpreter Lock (GIL) has acted as an obstacle to efficient multithreading, particularly in CPU-intensive tasks such as deep learning through ONNX. However, Python 3.12 is set to debut a revolutionary feature: PEP 684, otherwise known as A Per-Interpreter GIL.

Why is this significant? ONNXRuntime, the core engine for executing ONNX deep learning models, is largely dependent on CPU resources. With the introduction of Python 3.12's per-interpreter GIL, there's an optimistic outlook for fully leveraging multi-core processors, thereby unleashing ONNX's untapped potential in deep learning applications.

As Python 3.12 is about to make its significant debut, it provides an ideal moment for me to re-engage with ONNX's multithreading capabilities, invigorated by these promising developments.

Keep an eye out for the upcoming release and join me in exploring the compelling opportunities that lie at the crossroads of ONNX and Python 3.12.

What should happen?

Create 3.12 python conda environments

Additional Context

No response

Tasks

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1. Add support for Python 3.12 #4998
   cla-signed locked +2
2. Build Python 3.12 based CI images. conda#13142
   cla-signed locked +2

[kenodegard]

Python 3.12 support will be included in conda-build 24.1.0, see #5134