Mailman 3 June 2008 - pypy-dev

channel logs
by Carl Friedrich Bolz July 1, 2008

July 1, 2008

Hi all, just wanted to note that the braintone logs seem to work at the moment, so you can read the as a stopgap measure here: http://merlinux.de/braintone/chat.freenode.net/pypy/last/50/ The format is not so nice, so I would actually really like pybot back :-). Cheers, Carl Friedrich

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pyrepl: cursor blinks
by Armin Rigo June 30, 2008

June 30, 2008

Hi all, When I'm running an interactive pypy-c over an ssh connection I notice that the cursor blinks a bit when I type (it can remain invisible for a fraction of second). Normal readline-style editing doesn't give this result even over laggy connections. I traced it to pypy/lib/pyrepl/unix_console.py lines 95 and 97, which are the control code for hiding and re-showing the cursor, called all the time when refreshing the display. I really don't like this, but of course it is not a concern for people whose terminal's cursor is blinking all the time anyway. Anyway, if I remove these control codes, I get quite a fine experience again. However, I'm sure this is highly dependent on the terminal and I fear that some terminals might display the cursor moving quickly around while refreshing is taking place. If anyone knows of a better solution to avoid both issues, please do tell :-) Otherwise, if you feel like it, could you please try the attached patch in your favourite terminal? No need to re-translate a pypy-c. Tell me what your experience is, running an interactive pypy-c over an ssh connection (preferably laggy). A bientot, Armin.

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I reinstated the nightly run of cpython tests against pypy-c
by Samuele Pedroni June 29, 2008

June 29, 2008

I switched to only test these combinations: 1) hybrid gc thread old-style allworkingmodules the result of a try run for this one can be seen at the usual place: http://www2.openend.se/~pedronis/pypy-c-test/allworkingmodules/summary.html http://www2.openend.se/~pedronis/pypy-c-test/allworkingmodules/56156/index.… although just the % doesn't tell much it seems we had some regressions in some fundamental tests, like test_builtin also our modified test_descr segfaults with this combination/these days it seems 2) stackless old-style allworkingmodules

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Dotviewer capabilities
by Dinu Gherman June 26, 2008

June 26, 2008

Hi all, while preparing a talk for EuroPython.org and chatting with Christian Tismer I remembered that PyPy had a nice PyGame GUI for browsing GraphViz .dot files. So I wanted to play with it and made a new SVN checkout (very funky Mandelbrot sets during compilation, BTW... ;-) Then it occured to me that I don't need PyPy to run dotviewer (great, because it's still compiling). So I throwed a few of my .dot files at dotviewer and got slightly surprised to see a few ra- ther basic things not quite working as I'd expect (like rec- tangular and record-like node shapes. I've created the follow- ing sample files to illustrate my findings: http://python.net/~gherman/tmp/sample.dot http://python.net/~gherman/tmp/sample.pdf http://python.net/~gherman/tmp/sample.sample-dotviewer.jpg I'm running PyGame 1.8.0rc5 on Mac OS X 10.5.3, BTW. So, am I running dotviewer in some wrong fashion? Do I need to run it on a different PyGame version or another OS? Or is there some documentation for docviewer and its capabilities, that I haven't found yet? In fact, what I hoped to find in dotviewer is a browser for dot files in which I can fold individual parts of a graph in and out (while GraphViz is, perhaps, recalculating the layout). If dotviewer cannot do that, maybe somebody knows of another browser which can? Thanks and regards, Dinu

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changes to pysqlite/ctypes
by Maciej Fijalkowski June 23, 2008

June 23, 2008

We implemented few changes, also new features to sqlite-ctypes. Most notably: * Implement create_function without py_object, using closures * Various bugfixes * Accept subclasses of string/unicode * Added support for readahead logic * Thread safety All with tests, or reenabling of tests. However, when I try to use your supplied info how to commit there, it says "authorization failed". Would you rather prefer it in patches or commited to the repo? Cheers, fijal

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Benchmarking django admin app
by Maciej Fijalkowski June 22, 2008

June 22, 2008

I did some benchmarks for django admin app. It was fairly hard since django is good at eating exceptions (there are like 3 levels that can eat your SystemExit) which makes it hard to correctly exit application. Anyway, it seems that our ctypes is huge problem there, calling of ctypes functions eats 20% of time overall (which is fairly a lot for 1-value table). C-level benchmark does not show anything specific. Overall it's about 3x slower than cpython, which is fairly bad (it uses the same ctypes-based pysqlite). I think we should repeat this exercise after faster ctypes and see how this goes. I don't have any reasonable benchmark to try without DB, since default webpage takes 4ms to create (12 on pypy-c), but it can be some small issue that makes huge difference. (And we don't support builtin benchmarking for pypy) Cheers, fijal

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Default options for pypy
by Maciej Fijalkowski June 20, 2008

June 20, 2008

Can I make --gc=hybrid --thread --faassen --allworkingmodules --oldstyle default options for pypy? People get easily confused.

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Re: [pypy-dev] From Brett in infrastructure
by Laura Creighton June 20, 2008

June 20, 2008

In a message of Fri, 20 Jun 2008 08:54:24 +0200, Armin Rigo writes: >Hi Laura, > >On Fri, Jun 20, 2008 at 05:17:10AM +0200, Laura Creighton wrote: >> Do we have a tool that does this? > >Not that I know of. I don't even really know the svnmerge.py he is >talking about and we haven't used it in the pypy repository as far as I >am aware. > > >Armin Ah, well I was confused. But it turns out so was he, and the tool he wants already comes with svn. Laura

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From Brett in infrastructure
by Laura Creighton June 19, 2008

June 19, 2008

Do we have a tool that does this? Laura ------- Forwarded Message Return-Path: infrastructure-bounces+lac=openend.se(a)python.org Delivery-Date: Fri Jun 20 04:41:53 2008 Return-Path: <infrastructure-bounces+lac=openend.se(a)python.org> From: "Brett Cannon" <brett(a)python.org> To: infrastructure(a)python.org Subject: [Infrastructure] How do we move over to svn 1.5 once 2.6/3.0 final are out? Does anyone happen to know if there is any way to use ``svn merge`` with a branch that has been managed with svnmerge.py initially? I would love to get the built-in support once we are out of beta, but I am not sure how to make sure we don't lose all the info we currently have going in branches such as py3k. - -Brett

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relative occurency of opcodes
by Maciej Fijalkowski June 18, 2008

June 18, 2008

I just performed simple statistics on hacked pypy-c. It seems that some opcodes are very often repeated by something else. It might make sense to create some super opcodes which combine those two. Here are statistics for translating gcbench: http://codespeak.net/svn/user/fijal/opcodes.txt

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Vilnius/Post EuroPython PyPy Sprint 10-12th of July
by Antonio Cuni June 16, 2008

June 16, 2008

======================================================== Vilnius/Post EuroPython PyPy Sprint 10-12th of July ======================================================== The PyPy team is sprinting at EuroPython again and we invite you to participate in our 3 day long sprint at the conference hotel - Reval Hotel Lietuva. If you plan to attend the sprint we recommend you to listen to the PyPy technical talks (`EuroPython schedule`_) during the conference since it will give you a good overview of the status of development. On the morning of the first sprint day (10th) we will also have a tutorial session for those new to PyPy development. As 3 days is relatively short for a PyPy sprint we suggest to travel back home on the 13th if possible (but it is ok to attend less than 3 days too). ------------------------------ Goals and topics of the sprint ------------------------------ There are many possible and interesting sprint topics to work on - here we list some possible task areas: * try out Python programs and fix them or fix PyPy or fix performance bottlenecks * some JIT improvement work * port the stackless transform to ootypesystem * other interesting stuff that you would like to work on ...;-) ------------ Registration ------------ If you'd like to come, please subscribe to the `pypy-sprint mailing list`_ and drop a note about your interests and post any questions. More organisational information will be sent to that list. Please register by adding yourself on the following list (via svn): http://codespeak.net/svn/pypy/extradoc/sprintinfo/post-ep2008/people.txt or on the pypy-sprint mailing list if you do not yet have check-in rights: http://codespeak.net/mailman/listinfo/pypy-sprint --------------------------------------- Preparation (if you feel it is needed): --------------------------------------- * read the `getting-started`_ pages on http://codespeak.net/pypy * for inspiration, overview and technical status you are welcome to read `the technical reports available and other relevant documentation`_ * please direct any technical and/or development oriented questions to pypy-dev at codespeak.net and any sprint organizing/logistical questions to pypy-sprint at codespeak.net * if you need information about the conference, potential hotels, directions etc we recommend to look at http://www.europython.org. We are looking forward to meet you at the Vilnius Post EuroPython PyPy sprint! The PyPy team .. See also .. .. _getting-started: http://codespeak.net/pypy/dist/pypy/doc/getting-started.html .. _`pypy-sprint mailing list`: http://codespeak.net/mailman/listinfo/pypy-sprint .. _`the technical reports available and other relevant documentation`: http://codespeak.net/pypy/dist/pypy/doc/index.html .. _`EuroPython schedule`: http://europython.org/timetable

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spotting pypy segfault
by Maciej Fijalkowski June 16, 2008

June 16, 2008

I think this is the one about finalizers, because they raise errors, but that might also be something with threads or anything, I don't know. What to do: 1. Have pypy-c with threads (hybrid gc, faassen, threads, allworkingmodules for me, svn v 55678) 2. Check out sqlalchemy svn checkout http://svn.sqlalchemy.org/sqlalchemy/trunk sqlalchemy go inside this directory (sqlalchemy), and run: PYTHONPATH=test gdb --args pypy-c --oldstyle test/ext/orderinglist.py my gdb got confused, but hopefully you'll have better chance. eventually, if this doesn't work (like you have different sqlalchemy installed), do (inside sqlalchemy dir) python2.4 setup.py develop, eventually as root depending on your system conf. Cheers and have fun debugging, fijal

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Talks at the EP
by Maciej Fijalkowski June 15, 2008

June 15, 2008

Jacob: can you tell me more or less exactly what your talk will be about? I would like to prepare mine at some point soon and it would be super-cool if they won't overlap.

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Beijing, China
by Lalo Martins June 10, 2008

June 10, 2008

This is an open-ended invitation. If any pypy developers or contributors find themselves in Beijing or nearby in the near future, drop me an email so we can arrange a talk or a dinner with the local geeks. We'll also be happy to show you around, help find hotel, and the usual necessities. best, Lalo Martins -- So many of our dreams at first seem impossible, then they seem improbable, and then, when we summon the will, they soon become inevitable. ----- http://lalomartins.info/ GNU: never give up freedom http://www.gnu.org/

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A freidn of mine is organising a computer security conference in Austria
by Laura Creighton June 10, 2008

June 10, 2008

He's looking for speakers and sponsors. He wanted to know whom we knew at IBM Zurich Security, and anybody else that he should probably invite to speak because they are interesting. So -- the people in Dresden? Anybody have a list of names and emails I could give him? Laura

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django performance analysis
by Maciej Fijalkowski June 9, 2008

June 9, 2008

Analysis of pypy-c --oldstyle runtests.py --settings=settings -v 2 using new _lsprof module These are analysis of a single test suite (test_client). In general, ctypes costs are bigger (due to teardown/setup which takes most of time). http://codespeak.net/~fijal/django-calltree.png Hereby I'll try to rewrite parts of ctypes (especially calling and some basic objects) in RPython. PS. I can upload kcachegrind input file if someone is interested.

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dead loop compilation
by Yun Mao June 9, 2008

June 9, 2008

Hi, I was playing with pypy svn branch, and one of the first functions i tried was the following: def f(): while 1: pass it looks like pypy was trying to evaluate this and has gone dead too. Is this what I suppose to see? thanks, Yun

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Problem on OOType for jspypy
by Leonardo Santagada June 5, 2008

June 5, 2008

Directly after annotation the targetjsstandalone.py gives an error on ootype. I cant see what might be the problem, and yes the code is translating to c fine. Here I am talking about the new code on a branch, but hopefully when antocuni and others in europe read this the code is going to be merged to trunk (if it is not wait a little for it). the error is: [translation:ERROR] Exception: unexpected prebuilt constant: <staticmethod object at 0x5937b0> but the full trace is on: http://paste.pocoo.org/show/62193/ thanks and I will be tomorrow on the channel. -- Leonardo Santagada

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