Mailman 3 June 2021 - pypy-dev

PyPy Winter Sprint + cpyext
by Stefan Beyer Dec. 21, 2022

Dec. 21, 2022

Hey everyone! Those of you who attended or followed one of the last two winter sprints in Leysin might know me, the others probably won't. I'm (still) a Master's student writing my thesis on PyPy's current issue with cross-heap cycles when using cpyext. The main point is, that they are not collected and stay around as floating garbage, even if they are not reachable any more. Correct me if I'm wrong, but I didn't notice anyone else working on that topic (and/or committing something) since I've picked it up two years ago (yeah, I know, that long ago...). I saw that you would be working on "cpyext performance and completeness" during the current winter sprint this week and thought that this might also concern my thesis. So I thought I'll give you an update. I recently pushed my current (non-optimized, breaking-some-tests, but more or less working) implementation of the "CPython-style" GC-extension for cpyext. It is still in an early stage and not all cases (legacy and non-legacy-finalizers, weakrefs) are handled. However, I picked up some pace during the last couple of weeks and I'm determined to finish this implementation during the following weeks (some quirks with the tests have been haunting me, but I think I figured most of them out by now). After that, I will implement a second alternative implementation (to compare to, mostly for the sake of my thesis), which will take some more time. I also added a couple of fancy test cases (the so called "dot-tests"), so that we can test complex object graphs a little bit easier (and also because it was kind of cool to have another language inside PyPy/RPython, even if it was only for the tests...), with more test cases to come (the current ones are a bit messy). None of the new changes concerning low-latency applications are currently integrated, but that should not be too hard. I guess it won't make much sense for me to join you at this year's winter sprint, especially as I won't be able to get there before Thursday, but I might be able to join you over the IRC channel (or some other form of communication if you like). If there is anything that is worth discussing please let me know! Also feel free to comment on my code, but beware that I might change some things once I try to do some optimizations (probably not many, but at least fix the worst issues) and make it a little bit more readable. You can find my code on the cpyext-gc-cycle branch.<https://bitbucket.org/pypy/pypy/commits/branch/cpyext-gc-cycle> Looking forward to hearing from you! Greetings, Stefan

2 2

help needed from tk/tcl experts
by Matti Picus June 18, 2021

June 18, 2021

Our cffi-backed tk/tcl implementation is failing the test_idel tests [0] on python3.7, and the failures persist in the 3.8 branch. Could someone who understands the way it is supposed to work take a look? There is something tricky about passing unicode strings and kwargs that we don't have right. This is pure python + cffi + tk/tcl, no RPython needed, no long translation times. If you wish to help but don't know how to start, let us know, anyone is welcome to pitch in. Thanks Matti [0] http://buildbot.pypy.org/summary/longrepr?testname=unmodified&builder=pypy-…

1 0

Microsoft is hirign to speed up python , they just need to support this project here.
by Phyo Arkar Lwin June 11, 2021

June 11, 2021

Hello PyPy, I think you guys need to talk to them. It seems GVR forgets existence of pypy. https://twitter.com/gvanrossum/status/1402756021358006272?s=19

1 0

Re: [pypy-dev] New official IRC channel
by Antonio Cuni June 9, 2021

June 9, 2021

On Fri, Jun 4, 2021 at 11:06 AM anatoly techtonik <techtonik(a)gmail.com> wrote: > I like how silently is Freenode being buried. Reminds my of my beloved > Belarus. So, what is the reason? > a quick google reveals many articles which explain what happened to freenode and why many projects decided to migrate to another IRC server. One of such articles is for example this: https://fosspost.org/freenode-collapse/ > On Sun, May 30, 2021 at 10:47 PM Antonio Cuni <anto.cuni(a)gmail.com> wrote: > > > > Following the example of many other FOSS projects, the PyPy team has > decided to move its official #pypy IRC channel from Freenode to > Libera.Chat: irc://irc.libera.chat/hpy > > > > The core devs will no longer be present on the Freenode channel, so we > recommend to join the new channel as soon as possible. > > > > https://www.pypy.org/posts/2021/05/pypy-irc-moves-to-libera-chat.html > > > > > > _______________________________________________ > > pypy-dev mailing list > > pypy-dev(a)python.org > > https://mail.python.org/mailman/listinfo/pypy-dev > > > > -- > anatoly t. >

1 0

How much money do you need to implement the 4+GB RAM (true 64bit) for pypy?
by super smart June 3, 2021

June 3, 2021

My AI program can only use 4GB of RAM in pypy. How much in CAD would you need to implement the 64 bit solution? Pypy has made my code so fast, that C++ is possibly not worth writing in ATM.

3 2