Monday 11:30 a.m.–noon
Pyjion: who doesn’t want faster for free?
- Audience level:
- Python Internals
At PyCon US 2015 an experiment was started: could a JIT be added to CPython which would speed up performance **and** be fully backwards-compatible? Could unaltered extension modules live happily with a JIT? That experiment is Pyjion and this talk will explain what we changed to CPython to add a pre-existing JIT to it and whether we met our goal of being a benefit instead of a hindrance.
[Pyjion]( https://github.com/microsoft/pyjion) is an attempt to add a JIT to CPython. The hope is that by designing an API which JITs can plug into it will allow for CPython to run faster for long-running jobs, foster a competitive environment for Python JITs, as well as staying fully backwards-compatible, both from a language and extension module perspective. This talk will answer three questions related to the project’s goals: 0. What API did we devise for CPython to allow for adding a JIT? 0. How did we take a pre-existing JIT and make it work with the proposed CPython API? 0. Did it lead to a performance improvement for long-running jobs?