atlas news
  PyPy
27  may     10h00
PyPy v7.3.23 release
mattip    PyPy v7.3.23: release of python 2.7, 3.11The PyPy team is proud to release version 7.3.23 of PyPy after the previousrelease on April 26, 2026. This...
28  april     10h00
PyPy v7.3.22 release
mattip    PyPy v7.3.22: release of python 2.7, 3.11The PyPy team is proud to release version 7.3.22 of PyPy after the previousrelease on March 13, 2026. This...
23  march     10h27
Using Claude to fix PyPy3.11 test failures securely
mattip    I got access to Claude Max for 6 months, as a promotional move Anthropic madeto Open Source Software contributors. My main OSS impact is as a...
13  march     10h00
PyPy v7.3.21 release
mattip    PyPy v7.3.21: release of python 2.7, 3.11WarningThis release has some known crashes. We recommend you use a different versionThe PyPy team is proud...
24  december     23h00
Load and store forwarding in the Toy Optimizer
Max Bernstein    This is a cross-post from Max Bernstein from his blog where he writesabout programming languages, compilers, optimizations, virtual machines.A long,...
04  july     12h00
PyPy v7.3.20 release
mattip    PyPy v7.3.20: release of python 2.7, 3.11The PyPy team is proud to release version 7.3.20 of PyPy after the previousrelease on Feb 26, 2025. The...
15  june     13h48
How fast can the RPython GC allocate?
CF Bolz-Tereick    While working on a paper about allocation profiling inVMProf I got curiousabout how quickly the RPython GC can allocate an object. I wrote a...
09  april     15h07
Doing the Prospero-Challenge in RPython
CF Bolz-Tereick    Recently I had a lot of fun playing with the ProsperoChallenge by MattKeeter. The challenge is to render a 1024x1024 image ofa quote from The Tempest...
26  february     12h00
PyPy v7.3.19 release
mattip    PyPy v7.3.19: release of python 2.7, 3.10 and 3.11 betaThe PyPy team is proud to release version 7.3.19 of PyPy. This is primarily abug-fix release...
25  february     10h16
Low Overhead Allocation Sampling with VMProf in PyPy’s GC
Christoph Jung    IntroductionThere are many time-based statistical profilers around (like VMProf or py-spyjust to name a few). They allow the user to pick a trade-off...
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