Mailman 3 April 2015 - pypy-dev

Porting PyPy/rpython to Python 3
by VanL April 20, 2015

April 20, 2015

Hi everyone, For the last little bit I have been working on porting the rpython toolchain to Python 3. My initial goal is to get either pypy2 or pypy3 to build with either pypy2 or pypy3. I had gotten the impression from some previous statements that these efforts would not be welcome, so I was doing my work in a private fork. After a few conversations at PyCon, though, I was encouraged to package some of these changes up and send them as a series of pull requests. A couple questions/… [View More]

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Re: [pypy-dev] Porting PyPy/rpython to Python 3
by Laura Creighton April 20, 2015

April 20, 2015

In a message of Mon, 20 Apr 2015 12:28:19 +0200, Armin Rigo writes: >Ok. Then yes, I think there should be little intrinsic reason for it >to be slower (apart from some bytes/unicodes changes, which should not >be too important in this case), and it would be a good excuse to focus >on the performance of PyPy3. > > >A bientôt, > >Armin. Sounds to me as if you are talking youself into it. ;) Laura

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Re: [pypy-dev] Porting PyPy/rpython to Python 3
by Laura Creighton April 20, 2015

April 20, 2015

In a message of Mon, 20 Apr 2015 12:04:10 +0200, Armin Rigo writes: >Hi Laura, > >On 20 April 2015 at 11:53, Laura Creighton <lac(a)openend.se> wrote: >> I worry that this will be slow. > >Slow at which level? The final speed of some translated PyPy should >not be influenced, but maybe translation itself can become slower. >But then it would be good motivation to do performance improvements in >PyPy3, which would at that point gain one major user --- our own … [View More]

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Re: [pypy-dev] Porting PyPy/rpython to Python 3
by Laura Creighton April 20, 2015

April 20, 2015

In a message of Mon, 20 Apr 2015 10:15:52 +0200, Armin Rigo writes: >I think I still prefer the "upgrade everything at once and forget >about Python 2" approach. I worry that this will be slow. Laura

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Can someone explain __extend__?
by VanL April 17, 2015

April 17, 2015

I am having some trouble wrapping my head around it. Reading through rpython/tools/pairtype.py, it looks like it could be one or more of a number of things: - An implementation of javascript-style prototypes. (The similarity: you don't subclass an object in js - you use the base object as a prototype and extend it with new functionality) - A way to do specialization and automatic dispatching on types so that a+b works (both "a" and "b" know what they are, and whether they are compatible with … [View More]

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PyPy translation on Xeon Phi (pka MIC)
by Ajit Dingankar April 14, 2015

April 14, 2015

I tried the translator for BF example on Xeon Phi: http://morepypy.blogspot.com/2011/04/tutorial-writing-interpreter-with-pypy… It failed due to a "safety check" related to asserts at the end of the translate module. I use CPython v2.7.2 since that's the latest I could find for the Phi accelerator. I thought I'd try it before going to the step of cross-compiling a more recent version. (Just for reference the example works with CPython v2.7.5 on the Xeon host.) I tried to search for … [View More]

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Vectorizing pypy traces no3
by Richard Plangger April 14, 2015

April 14, 2015

Hi, I have recently managed to correctly transform a trace to a vectorized trace that includes a guard. I'm hoping that this might be merged into the code base of pypy (when it is finished), thus it would be nice to get feedback and iron out some problems I currently have. Of course this needs explanation (hope that does not lead to tl;dr): Consider the following trace: short version (pseudo syntax): ``` label(...,i,...) store(c,i) = load(a,i) + load(b,i) j = i+1 guard(j<MAX) jump(...,j,..… [View More]

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Which pypy with >=3.3 Python compatibility
by Mike Müller April 14, 2015

April 14, 2015

I need pypy that is Python 3.3 or, even better, Python 3.4 compatible. I can found the nightly builds at http://buildbot.pypy.org//nightly Which one should I use py3.3 or py3k? There are many more version. Should I use one of them? Thanks, Mike

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Re: [pypy-dev] http://speed.pypy.org/timeline/ -- show the code?
by Laura Creighton April 13, 2015

April 13, 2015

In a message of Sun, 12 Apr 2015 17:39:17 +0200, Armin Rigo writes: >Hi Laura, > >On 12 April 2015 at 14:46, Laura Creighton <lac(a)openend.se> wrote: >> I thought there was a way to show the code that was actually run to get >> the results. Maybe I am confusing things with the pshootout site. Have >> I just forgotten how to do this? > >Yes, there is a way: from a page that shows one graph, like for example >http://speed.pypy.org/timeline/?exe=3%2C6%… [View More]

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http://speed.pypy.org/timeline/ -- show the code?
by Laura Creighton April 12, 2015

April 12, 2015

I thought there was a way to show the code that was actually run to get the results. Maybe I am confusing things with the pshootout site. Have I just forgotten how to do this? I wanted to show an astronomer what sort of code we run blazingly fast vs what sort we are less speedy at, so he can decide if he needs to write his algorithm in C++ or not. If speed.pypy.org doesn't have such a feature, it would seem to be a good one to add. Laura

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