Mailman 3 October 2016 - pypy-dev

About gurobipy
by Luis José Novoa 31 May '18

31 May '18

Hi All, My name is Luis Novoa. Im working on a large scale optimization problem using python/gurobipy for my implementation. I was wondering if any of you in this list has used gurobipy with pypy, or if it is even possible at this time. Thanks in advance, Luis.

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Dontbug: A reversible debugger for PHP (similar in concept to RevDB for Python/PyPy)
by Sidharth Kshatriya 17 Dec '16

17 Dec '16

Dear All, There have been some interesting blogs about RevDB a reversible debugger for Python on the PyPy blog. I'd like to tell you about Dontbug, a reversible debugger for PHP that I recently released. Like RevDB, it allows you to debug forwards and backwards -- but in PHP. See: https://github.com/sidkshatriya/dontbug For a short (1m35s) demo video: https://www.youtube.com/watch?v=DA76z77KtY0 Why am I talking about this in a PyPy mailing list :-) ? Firstly, because I think reverse debuggers for dynamic languages are relatively rare -- so its a good idea that we know about each other! Secondly, the fact that there are more and more reversible debuggers for various languages every year means that reverse debugging is definitely entering the mainstream. We could be at an inflexion point here! Hope you guys find Dontbug interesting! Thanks, Sidharth

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Bump DARWIN_VERSION_MIN to 10.7?
by Jeremy Thurgood 30 Nov '16

30 Nov '16

Hi, I recently tried to build RevDB on OS X and the build failed because __thread isn't supported on OS X 10.6 which RPython specifies as the minimum supported version. I've updated DARWIN_VERSION_MIN to 10.7 in the reverse-debugger branch[1], because otherwise it doesn't build at all on OS X. Armin suggested that there would be a performance benefit to increasing DARWIN_VERSION_MIN for pypy as well (along with adding darwin to the SUPPORT__THREAD list). I would like to make this change, but I don't want to break pypy for anyone who may still need OS X 10.6 support. As far as I can tell, OS X 10.6 is unsupported (last release in 2011) but still available as a necessary upgrade step from older versions that don't support the app store to newer versions that are only available through the app store. I also have an old laptop running OS X 10.8, and several applications (including Chrome) have dropped support for that recently. [1] https://bitbucket.org/pypy/pypy/commits/a740348ea339c358601d9029bc6811f56c4… Thanks, --jerith

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PGO Optimized Binary
by Singh, Yashwardhan 10 Nov '16

10 Nov '16

Hi All, We applied compiler assisted optimization technique called PGO or Profile Guided Optimization while building PyPy, and found performance got improved by up to 22.4% on the Grand Unified Python Benchmark (GUPB) from “hg clone https://hg.python.org/benchmarks”. The below result table shows majority of 51 micros got performance boost with 8 got performance regression. Benchmark Baseline PGO Perf Delta % hg_startup 0.0160 0.0124 22.4 2to3 6.1157 5.1978 15.0 html5lib 4.9263 4.1961 14.8 formatted_logging 0.0463 0.0399 13.9 regex_v8 0.1394 0.1206 13.5 simple_logging 0.0328 0.0289 11.9 html5lib_warmup 2.5411 2.2939 9.7 bzr_startup 0.0686 0.0621 9.6 unpack_sequence 0.0001 0.0001 8.6 normal_startup 0.8694 0.7983 8.2 regex_compile 0.0707 0.0657 7.0 json_load 0.2924 0.2734 6.5 fastpickle 1.7315 1.6290 5.9 tornado_http 0.0707 0.0665 5.8 pickle_list 1.8614 1.7897 3.9 slowunpickle 0.0260 0.0250 3.8 slowpickle 0.0336 0.0323 3.7 telco 0.0194 0.0187 3.7 pathlib 0.0171 0.0165 3.2 go 0.1069 0.1036 3.1 slowspitfire 0.2624 0.2547 2.9 etree_generate 0.1037 0.1008 2.8 silent_logging 0.0000 0.0000 2.8 pickle_dict 3.2698 3.1796 2.8 spambayes 0.0581 0.0566 2.6 startup_nosite 0.5691 0.5549 2.5 chameleon_v2 2.7629 2.7009 2.2 etree_parse 0.5610 0.5505 1.9 etree_process 0.0725 0.0712 1.9 regex_effbot 0.0377 0.0371 1.7 fastunpickle 0.8521 0.8382 1.6 float 0.0171 0.0169 0.9 pidigits 0.3833 0.3801 0.8 call_method_unknown 0.0123 0.0122 0.6 hexiom2 15.8354 15.7533 0.5 etree_iterparse 0.2102 0.2094 0.4 chaos 0.0089 0.0088 0.2 spectral_norm 0.0099 0.0099 0.2 call_simple 0.0102 0.0102 0.1 mako_v2 0.0204 0.0204 0.1 fannkuch 0.2262 0.2260 0.1 unpickle_list 0.6448 0.6449 0.0 call_method_slots 0.0106 0.0106 0.0 call_method 0.0106 0.0106 -0.1 raytrace 0.0210 0.0210 -0.2 richards 0.0042 0.0043 -1.6 json_dump_v2 0.9288 0.9501 -2.3 django_v3 0.0551 0.0570 -3.4 meteor_contest 0.0984 0.1021 -3.8 nbody 0.0446 0.0463 -3.8 nqueens 0.0498 0.0525 -5.4 Average 3.6 We’d like to get some input on how to contribute our optimization recipe to the PyPy dev tree, perhaps by creating an item to the PyPy issue tracker? In addition, we would also appreciate any other benchmark or real world use based workload as alternatives to evaluate this. Thanks, Yash

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pypy3.3: building extensions: environment variables CC etc - not honored
by Danny Milosavljevic 04 Nov '16

04 Nov '16

Hi, I'm trying to package pypy3.3 for the Guix distribution. In the course of that I found that pypy3.3-v5.2.0-alpha1-src/lib-python/3/distutils/sysconfig_pypy.py doesn't honor the compiler environment variables ("CC" etc) like sysconfig_cpython.py does. Is that on purpose? If not, find attached a patch which makes it honor the variables (I have tested it and it works). Cheers, Danny

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pypy-config
by David Naylor 02 Nov '16

02 Nov '16

Hi Some software depends on python-config however PyPy does not provide an equivalent pypy-config. Are there any plans/workarounds to provide such a bin? Regards D

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Colo in Germany for the Windows build slave?
by Yury V. Zaytsev 02 Nov '16

02 Nov '16

Hi there, I've been running the Windows build slave for the last ~1.5 years, but all good things come to an end, and I've been informed that I must shutdown the machine by the end of the year (that was the bad news). The "good" news is that I've been promised that I can have the hardware, so, in theory, if I can find colo to host it (Germany, preferably Cologne area), I can replace the hard drives, reshuffle the RAM, reinstall the system and plug it back in. If memory serves me well, it's an old Dell PowerEdge R710 rack mount server (2U). It used to run other VMs unrelated to the PyPy project, but I only plan to use it to host build VMs for OSS projects that I'm involved in after "decommissioning". Any takers? I think it would be best to talk via private email to avoid annoying list subscribers. -- Sincerely yours, Yury V. Zaytsev

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SSL module Py3.5, Github? Bitbucket?
by Richard Plangger 02 Nov '16

02 Nov '16

Hi, I'm currenlty working on the ssl stdlib replacement we agreed to implement during for py3.5. I'm unsure what the current rule for new project is. Github? Bitbucket? VMProf was initiated on Github, what did we learn from that experiment? Is the bar lower for new contributions? Cheers, Richard

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Fwd: [SUPPORT] [Bitbucket Cloud Support] users are issuing spam pull requests [BBS-42969]
by Matti Picus 31 Oct '16

31 Oct '16

I filed an issue in PyPy's name with Atlassian about spam pull requests on the PyPy hg repo, it is annoying to decline them. Here is the text of the issue (reference BBS-42969): "We have been getting pull requests like this one https://bitbucket.org/pypy/pypy/pull-requests/492/niconico-translator/diff Pure garbage. How can we prevent this?" Matti

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Performance degradation in the latest pypy
by Saud Alwasly 29 Oct '16

29 Oct '16

Dear pypy-dev representative I have noticed severe performance degradation after upgrading pypy from pypy4.0.1 to pypy5.4.1. I attached the call graph for the same script running on both: it seems that the copy module is an issue in the new version.

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