Mailman 3 March 2014 - pypy-dev

win32 and external function calls
by Matti Picus March 22, 2014

March 22, 2014

1 0

How to check, that jit is turned on?
by KoDer March 21, 2014

March 21, 2014

Hi all, I have a quite simple python script, which mostly don't use python dynamic features, but it almost two times slower unded latest pypy than under python 2.6.7. Is there any way to check, that jit actually working? pypy is builded from source with > python ../../rpython/bin/rpython -Ojit targetpypystandalone [PyPy 2.2.1 with GCC 4.8.1] on linux2 Thanks -- K.Danilov aka koder Skype:koder.ua Tel:+38-050-4030512

2 3

GSOC: Introduction and Interested in Numpy Improvements Project
by Rajul Srivastava March 19, 2014

March 19, 2014

Hi all, My name in Rajul, and I am a final year undergraduate student at the Indian Institute of Technology Kharagpur. I wish to participate in Google Summer of Code 2014, and while going through the list of organisations, I came across PyPy. I am proficient with programming languages C/C++, Python, Java, Groovy, Ruby. I am very interested in the fields of Algorithms, Computational Sciences, and Software Engineering. I have always been interested in programming and in the past I have … [View More]

2 1

Rollback interpreter state to fork for unittesting
by anatoly techtonik March 19, 2014

March 19, 2014

Hi, I wonder if it possible to discard run-time changes to interpreter state and get back to some point in the past? One of the applications is forking to speed up unit tests - for it after interpreter is initialized and loaded unittest imports. -- anatoly t.

2 6

ssl and win32
by matti picus March 19, 2014

March 19, 2014

I have been slowly trying to work on the failure on win32 of ssl, as reported in issue 1696 [0]. The issue now includes a 10 line test, using the stdlib test_ftplib classes. i tried converting the test to run on untranslated python, but am running into a very strange failure mode similar to the own-testing failure of ssl_wrap [1]. For some reason a failing call to socket functions is setting errno==2, which is not a valid socket call error [3] I would love to get some ideas about how to … [View More]

1 0

Pypy garbage collection
by Martin Koch March 18, 2014

March 18, 2014

Hi List I'm running a server (written in python, executed with pypy) that holds a large graph (55GB, millions of nodes and edges) in memory and responds to queries by traversing the graph.The graph is mutated a few times a second, and there are hundreds of read-only requests a second. My problem is that I no control over garbage collection. Thus, a major GC might kick in while serving a query, and with this amount of data, the GC takes around 2 minutes. I have tried mitigating this by … [View More]

5 29

Re: [pypy-dev] RinohType and PyPy2
by Maciej Fijalkowski March 11, 2014

March 11, 2014

Hi Brecht. I must say I've been trying to understand what's going on and I'm failing so far. Thanks for a valuable benchmark! And yes, we're working on improving the warmup time (ETA unknown though) On Sun, Mar 2, 2014 at 12:11 PM, Brecht Machiels <brecht(a)mos6581.org> wrote: > Thanks Maciej, > > sys._getframe was introduced by "magicsuper", which I used to avoid refactoring all super() calls. I've done that now and there shouldn't be any more sys._getframe calls. You can pull … [View More]

3 2

Python vs pypy: interesting performance difference [dict.setdefault]
by David Naylor March 10, 2014

March 10, 2014

Hi, I needed to create a cache of date and time objects and I wondered what was the best way to handle the cache. For comparison I put together the following test: <file="iforkey.py"> import datetime import random import timeit ranges = [datetime.datetime(2011,01, random.randint(1, 31)) for i in xrange(1000)] def ifdict(): cache = {} b = [] for i in ranges: key = i.day if key in cache: b.append(cache[key]) else: date = i.… [View More]

4 14

slow-ish multithreaded primitives
by Dima Tisnek March 10, 2014

March 10, 2014

Hey all, I wrote some threaded code and ran it under different version of python, and unexpectedly high overhead is observed: cpython 2.6.8. cpython 2.7.6, pypy 2.2.1: 14~53ms cpython 3.3.4: pypy 2.1.0 beta py3 mode: <1ms is someone here interested in getting to the bottom of it? or getting pypy py2 mode in line with py3 mode? the set up: 1 lock 2 threads each thread has own condition variable both condition variables share the lock mentioned above. threads wake each other up in turn. … [View More]

4 10

win32 failures on own tests
by Matti Picus March 10, 2014

March 10, 2014

2 1