Episode 2 - PEP 703: Removing the GIL

Episode 2 of the core.py podcast, hosted by Pablo Galindo and Łukasz Langa, titled "Episode 2 - PEP 703: Removing the GIL" was published on October 30, 2023 and runs 74 minutes.

October 30, 2023 ·74m · core.py

0:00 / 0:00

Summary

We've read the PEP on making the Global Interpreter Lock optional so you don't have to. Timestamps (00:00:00) Intro (00:00:50) CURRENT STATE OF THINGS (00:00:58) Reference counting (00:01:35) Garbage collection (00:02:33) What is the Global Interpreter Lock? (00:03:57) The GIL and threading (00:07:24) Current ways around the GIL (00:09:26) HISTORICAL ATTEMPTS TO REMOVE THE GIL (00:09:46) 1999: Greg Stein's attempt at Python 1.6 (00:10:46) Jython doesn't have the GIL (00:11:19) 2015: Larry Hastings' Gilectomy at Python 3.5 (00:12:34) Pablo says removing the GIL is actually very easy (00:13:24) Łukasz is skeptical (00:14:20) 2021: Sam Gross' nogil at Python 3.9 (00:18:22) 2023: PEP 703 for Python 3.13 (00:20:05) PEP 703 IN DETAIL (00:20:20) Biased Reference Counting (00:25:19) Other needed speedups: deferred refcounts, immortalization, GC (00:28:41) mimalloc (00:34:46) More GC changes (00:38:20) eval breaker (00:42:08) Thread-safe standard collections (00:45:26) Fast paths vs. slow paths (00:49:47) Reading freed memory with mimalloc is kinda okay? (00:58:06) Specializations become harder to implement without the GIL (01:01:27) PEP 703 terms of acceptance (01:04:08) No free lunch (01:09:25) It's now or never (01:11:59) Outro

Episode Description

We've read the PEP on making the Global Interpreter Lock optional so you don't have to.

Timestamps

(00:00:00) Intro

(00:00:50) CURRENT STATE OF THINGS

(00:00:58) Reference counting

(00:01:35) Garbage collection

(00:02:33) What is the Global Interpreter Lock?

(00:03:57) The GIL and threading

(00:07:24) Current ways around the GIL

(00:09:26) HISTORICAL ATTEMPTS TO REMOVE THE GIL

(00:09:46) 1999: Greg Stein's attempt at Python 1.6

(00:10:46) Jython doesn't have the GIL

(00:11:19) 2015: Larry Hastings' Gilectomy at Python 3.5

(00:12:34) Pablo says removing the GIL is actually very easy

(00:13:24) Łukasz is skeptical

(00:14:20) 2021: Sam Gross' nogil at Python 3.9

(00:18:22) 2023: PEP 703 for Python 3.13

(00:20:05) PEP 703 IN DETAIL

(00:20:20) Biased Reference Counting

(00:25:19) Other needed speedups: deferred refcounts, immortalization, GC

(00:28:41) mimalloc

(00:34:46) More GC changes

(00:38:20) eval breaker

(00:42:08) Thread-safe standard collections

(00:45:26) Fast paths vs. slow paths

(00:49:47) Reading freed memory with mimalloc is kinda okay?

(00:58:06) Specializations become harder to implement without the GIL

(01:01:27) PEP 703 terms of acceptance

(01:04:08) No free lunch

(01:09:25) It's now or never

(01:11:59) Outro

Share this episode

Similar Episodes

No similar episodes found.

Similar Podcasts

Mums with Bright Ideas Melissa Pye Mums with Bright Ideas Podcast is for Mums looking for inspo and know-how to start and grow their own business. The Host, Melissa Pye, is a straight shooter and doesn't shy away from asking probing questions to get to the core of what life is really like as a biz owner.Melissa's guests are Mums at different stages of their biz journey who share their story, warts and all. Melissa adopts what she calls a "No Peacocking Policy" so that listeners will always get the real story. To help Mums on their biz journey, Melissa also interviews subject matter experts on finance, marketing, operations, HR and just about anything that will help a biz grow.Melissa has 30 years biz experience, half of that in senior marketing roles in Australia and Asia working with brands including Hyundai, Audi, Jaguar, Optus and Westin Hotels. Melissa launched her first biz 15 years ago and has never looked back! Her latest biz, The LightBulb Lounge, provides courses and a community for Mums starting their bi Sean vigue fitness Sean Vigue Fitness Features world class Yoga, Pilates and core workouts with personal training and fun bootcamps from central Florida’s premier fitness instructor - Sean Vigue. Find eating tips and the most current health and fitness news. Videos updated weekly.Check out my award winning Pilates for Men workout on my website.www.seanviguefitness.com www.facebook.com/seanvigue Core EM - Emergency Medicine Podcast Core EM Core EM Emergency Medicine Podcast Core IM | Internal Medicine Podcast Core IM Team Core Internal Medicine via following series:5 Pearls || Clinically relevant pearls Mind the Gap || Why do we do what we do?Gray Matters || Management ReasoningHoofbeats || Dissecting clinical reasoningAt the Bedside || Explore everyday challenges