Mailman 3 April 2015 - pypy-dev

use as benchmark pypy vs python if you please
by Dima Tisnek 13 Sep '15

13 Sep '15

Attached is n-queens solver (pardon my naive algorithm), it runs: python 2.7.6: 17s pypy 2.4.0 alpha: 23s same nojit: 32s I've tried similar-looking algorithm for another problem before, and has similar results -- somehow pypy was slower. feel free to investigate / tweak or even use on speed.pypy.org

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Poor performance for Krakatau
by Robert Grosse 10 Aug '15

10 Aug '15

In some cases, Pypy performs worse than CPython when running Krakatau, and it has gotten a lot worse from 2.3 to 2.5 My benchmark is https://github.com/Storyyeller/Krakatau/tree/pypy_benchmark (for future reference, commit d889c7f44723e6d66a3630681f0385f173317dc9) You can run it with pypy Krakatau\benchmark.py -path <path to Java rt.jar> I get the following timings CPython: 17.43s Pypy 2.3: 38.48s (build pypy-c-jit-71056-c8e3b8cbc843-win32) Pypy 2.4: 39.92s (build pypy-c-jit-72200-375133966c12-win32) Pypy 2.5: 49.94s (build pypy-c-jit-74404-9fd586fe0fe5-win32) Not only was it slower than CPython to begin with, but it got much worse recently.

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Windows: pypyw.exe?
by Yaacov Finkelman 22 May '15

22 May '15

Hi, I was wondering what the plan is for fixing: https://bitbucket.org/pypy/pypy/issue/1651/ It is just a hassle with each upgrade of pypy. I'd be happy to fix, but I don't know where to start. Best, Jacob

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Be on my podcast
by Michael Kennedy 14 May '15

14 May '15

I'd love to have you guys on my podcast, Talk Python To Me. You can learn more here: http://www.talkpythontome.com/ Interested in being a guest? Or a couple of you even? Thanks! Michael

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How to embed PyPy when there's no filesystem?
by tom＠twhanson.com 30 Apr '15

30 Apr '15

I'm evaluating PyPy for use in an application where it will be running in an RTOS (Greenhills Integrity) which is congifured without a file system at runtime. The rest of the application is C/C++. Is there a way to build PyPy for this environment? The issue I see is that pypy_setup_home()requires a file system path to an executable / .so library. Is it possible to statically link PyPy into the application and the give an equivalent to pypy_setup_home() a pointer to the linked code? Some other approach? Thanks Tom

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Re: [pypy-dev] EuroPython?
by Richard Plangger 28 Apr '15

28 Apr '15

Hi, I also planning to attend EuroPython and my advisor (of the thesis) had the idea to present the vectorization optimization. Here is my draft: http://docdro.id/yonu (or in attachment). I hopefully you like it. I'm happy to get any feedback! Of course I'm not a core PyPy developer (and I hope my abstract does not give the impression that I am), but it might still be cool to draw some attention of something 'new' in the RPython toolchain? Best, Richard PS.: I'm up to now only get the digest of the mailing list, thus I don't know how to repsond to the original message.

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EuroPython?
by Armin Rigo 27 Apr '15

27 Apr '15

Hi all, I'm preparing a EuroPython submission about STM and/or about CFFI, and wondering if someone else also planned to submit a talk. If not, I'll include a general "status of PyPy" part in my submission. Armin

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Allegro64 buildslave disappeared
by Laura Creighton 25 Apr '15

25 Apr '15

Has this problem been resoved? People are getting buildslaves on python.org for other things, so I suspect we could have one if we just asked. Laura (who doesn't want to ask if the problem has been already solved.)

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Re: [pypy-dev] [pypy-commit] pypy default: Detect objects with h_tid==-42
by Maciej Fijalkowski 23 Apr '15

23 Apr '15

Are you sure this is unsigned? IMO I've seen '0xffffffd5' or something like that. On Tue, Apr 21, 2015 at 7:24 PM, arigo <noreply(a)buildbot.pypy.org> wrote: > Author: Armin Rigo <arigo(a)tunes.org> > Branch: > Changeset: r76860:e30bd43e438c > Date: 2015-04-21 19:24 +0200 > http://bitbucket.org/pypy/pypy/changeset/e30bd43e438c/ > > Log: Detect objects with h_tid==-42 > > diff --git a/pypy/tool/gdb_pypy.py b/pypy/tool/gdb_pypy.py > --- a/pypy/tool/gdb_pypy.py > +++ b/pypy/tool/gdb_pypy.py > @@ -99,6 +99,8 @@ > obj = obj.dereference() > hdr = lookup(obj, '_gcheader') > tid = hdr['h_tid'] > + if tid == -42: # forwarded? > + return 'Forwarded' > if sys.maxsize < 2**32: > offset = tid & 0xFFFF # 32bit > else: > _______________________________________________ > pypy-commit mailing list > pypy-commit(a)python.org > https://mail.python.org/mailman/listinfo/pypy-commit

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Re: [pypy-dev] Allegro64 buildslave disappeared
by Laura Creighton 22 Apr '15

22 Apr '15

Okay, I've started the asking process. It may collide with somebody else's desire to have a way to securely handle automatic patch validation for patches sent to CPython, which apparantly is on the list of very hard things to do securely. Laura

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