Mailman 3 March 2014 - pypy-dev

Possibly a PyPy C-API bug
by Johan Råde March 9, 2014

March 9, 2014

Hi everyone, I think I might have found a bug in the PyPy C-API. It seems that PyType_Type.tp_new is broken. Here is a minimal example that reproduces the bug. Instructions: Compile Foo3.c as a python extension module named Foo3. Set up the paths so that Test3.py can find Foo3. Run Test3.py Expected result and observed result with CPython 2.7.6: Test3.py runs Observed result with PyPy 2.2.1: Test3.py crashes. (It gets into an infinite recursive loop where PyType_Type.tpnew and … [View More]

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pypy 2.2.1 win32
by norbert.raimund.leisner＠arcor.de March 7, 2014

March 7, 2014

Hello support-team, I have installed pypy 2.2.1 win32 for my OS Windows XP SP 3 -32 bit, Python 2.7, MSI Microsoft Visual C++ 2008 SP1 Redistributable Package (x86). Now my question: Must be Python 2.7 deinstalled and replaced by Pythonv2.7.6 or not? I ask you because a chess program "Sunfish" https://github.com/thomasahle/sunfish/ is using pypy. Best wishes, Norbert

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RPython question about the lifetime of global state
by Lenard Lindstrom March 6, 2014

March 6, 2014

Hi everyone, I am developing a new image blit system for Pygame 2.0 - the SDL2 edition. A blitter prototype project is maintained at https://bitbucket.org/llindstrom/blitter. The prototype implements a blit loop JIT; Pixel format specific blit code is generated dynamically as needed. The prototype is written in RPython as an interpreter for executing array copies. The JIT comes automatically from the RPython tool chain, of course. The prototype blitter is built as a stand-alone shared … [View More]

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Re: [pypy-dev] RinohType and PyPy2
by Armin Rigo March 2, 2014

March 2, 2014

Hi Brecht, On 1 March 2014 23:34, Brecht Machiels <brecht(a)mos6581.org> wrote: > While PyPy2 performs better than PyPy3, it's still much slower than CPython. Is RinohType hitting a weak spot in PyPy? Any hints on what I can do to improve performance? It's not really helpful, but the warm-up time is the first issue here. If I edit template.py to run it e.g. 10 times instead of only once, the speed grows quickly by a factor of 4. It means your code, for some reason, exhibits slow … [View More]

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pypy in python3?
by Martin Matusiak March 2, 2014

March 2, 2014

Hi, I'm wondering whether there are any plans to port pypy itself to python 3 at some point. And what the benefits of that might be (other than having a more recent host language). Is there anything in python 3 that would make it easier/harder for pypy? Thanks, Martin

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Re: [pypy-dev] RinohType and PyPy2
by Maciej Fijalkowski March 2, 2014

March 2, 2014

the first obvious thing that jumps at me is your casual use of sys._getframe - the JIT aborts in this case and proceeds to the interpreter (so you pay the price for JITting, while you also pay the prace for not having compiled assembler). That probably does not explain everything, but please don't use sys._getframe in production code if you want the JIT to be fast. On Sun, Mar 2, 2014 at 12:34 AM, Brecht Machiels <brecht(a)mos6581.org> wrote: > Hello, > > I've managed to … [View More]

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RinohType and PyPy2
by Brecht Machiels March 1, 2014

March 1, 2014

Hello, I've managed to backport RinohType to Python 2 (took me only a couple of hours thankfully). Results on my Celeron T3000 (Arch Linux x86_64): CPython 3.3.4 14 s PyPy3 2.1.0-beta1 61 s CPython 2.7.6 15 s PyPy 2.2.1 35 s If you want to give it a try (no external dependencies): git clone --branch pypy2 https://github.com/brechtm/rinohtype.git cd rinohtype/examples/rfic2009 rm -rf template.ptc; PYTHONPATH=../.. pypy template.py While PyPy2 performs … [View More]

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