Mailman 3 March 2011 - pypy-dev

status of the graphviz server on codespeak?
by Laura Creighton March 23, 2011

March 23, 2011

getting-started-dev says: Download and install `Dot Graphviz`_ (optional if you have an internet connection: the flowgraph viewer then connects to codespeak.net and lets it convert the flowgraph by a graphviz server). What's going to happen to that when codespeak goes away? Laura

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Implementing CAS
by Timothy Baldridge March 23, 2011

March 23, 2011

After my last discussion about getting some multi-threading primitives, I took a look at how locks are implemented in PyPy. PyPy currently uses OS level mutexes...which is okay for most uses, but in my case, I need super fast spinlocks, and for that I need a CAS operation. What I'm looking for is a bit of direction on how to go about implementing this function (shown in C syntax): int cas(*expected, *new, **location) This function looks at the contents of the data pointed at by **location. If … [View More]

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Re: [pypy-dev] [pypy-svn] pypy fold_intadd: Changed test to reflect my optimizeopt's decision to emit int_sub(iX, -x) when x < 0
by Antonio Cuni March 20, 2011

March 20, 2011

Hi Daniel, On 19/03/11 04:45, ademan wrote: > Author: Daniel Roberts <Ademan555(a)gmail.com> > Branch: fold_intadd > Changeset: r42802:386510d0fb45 > Date: 2011-03-18 20:41 -0700 > http://bitbucket.org/pypy/pypy/changeset/386510d0fb45/ > > Log: Changed test to reflect my optimizeopt's decision to emit > int_sub(iX, -x) when x < 0 what happens when you are on 32 bit and see int_add(i0, -2147483648)? ciao, Anto

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Re: [pypy-dev] phb impression from speed.pypy.org
by Laura Creighton March 19, 2011

March 19, 2011

Smaller is better when you are dieting. Or when you are racing. Given that there is talk that we will measure memory size as well, and turn into performance.pypy.org then I think that the 'smaller is better' idea will be well understood. As a practical matter, making 'faster' be 'bigger' doesn't make sense in terms of benchmarks, in which you want to be the first to finish. Laura

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Re: [pypy-dev] European sprints?
by Laura Creighton March 18, 2011

March 18, 2011

In a message of Wed, 16 Feb 2011 13:08:07 +0100, Laura Creighton writes: >In a message of Wed, 16 Feb 2011 12:01:38 +0100, Bea During writes: >>Here is a suggestion of places and dates based on Lauras, Carl Friedrich > >>and Antos >>input: >> >>- Gothenburg sprint: 25th of April to 1st of May >>- Europython sprint/Florence: 25th of June to 26th of June (EP2011 >>official sprint dates) >>- Düsseldorf sprint: 22nd of August to 28th of August … [View More]

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Documentation sprint at PyCon
by David Malcolm March 18, 2011

March 18, 2011

Laura, me, and others sprinted on documentation cleanups at PyCon, using https://bitbucket.org/dmalcolm/pypy-dmalcolm as a development branch. Laura and Armin just merged the changes from that repo Significant changes are: - the Sphinxification of the docs - the renaming of the sources from .txt to .rst, to play better with text editors with smarts for rst - organizing the documentation, to try to stress the high-important up-to-date material, whilst moving the more out-of-date … [View More]

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Re: [pypy-dev] ideas for Google Summer of code
by Laura Creighton March 18, 2011

March 18, 2011

I'd like speed.python.org to become performance.python.org so we can measure memoryt consumption too. Laura

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GC Tuning script values
by Chris Mulligan March 18, 2011

March 18, 2011

Just installed PyPy on my Macbook Pro per Bob Ippolito's instructions. Very easy! Here's a link to my tuning values http://a.libpa.st/hMGxQ. In short with a dual cure i5 w/ 3MB L3 the following were fastest: 1 CPU: 2M 2 CPU: 768K 3 CPU: 768K 4 CPU: 512K Congrats on the hard work, everyone. I'm very excited to start testing some of our own code with pypy.

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gcbench run
by Curt Micol March 18, 2011

March 18, 2011

Hello, In his post today, Bob Ippolito said the devs were interested in results from the gcbench run. Here's a gist with all of the data. Hope this is helpful. https://gist.github.com/874910 Thanks for the great work on PyPy, -- # Curt Micol

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ideas for Google Summer of code
by Antonio Cuni March 17, 2011

March 17, 2011

Hi all, the deadlines for GSoc are approaching, and at some point we should probably make a blog post about that. But first, we need to 1) collect ideas for possible tasks and 2) find potential mentors. Two ideas that just came to my mind: - "general work" on speed.pypy.org (we need to define better what we want, of course) - improving the jitviewer, maybe integrating it with the profiler (when we'll have one :-)) - <insert-your-idea-here> :-) ciao, Anto

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