Mailman 3 August 2017 - pypy-dev

About gurobipy
by Luis José Novoa 01 Jun '18

01 Jun '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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PhD Positions in programming language runtimes (Python)
by David Bremner 03 May '18

03 May '18

1 Position I: Python on OMR =========================== The candidate will explore the benefits and challenges of using OMR [1] components (e.g. JIT, GC) in Python [2,3] runtimes. This may involve extending OMR in novel ways to better support Python, or vice-versa. If questions like how to balance fast startup time for scripting applications against good performance for compute-intensive workloads sound interesting, this might an opportunity for you. 2 Position II: Python and PGAS ============================== The candidate will implement support for parallel programming with Python, using the PGAS [4] (parallel global address space) model. The PGAS model can significantly simplify the implementation of parallel algorithms on distributed and shared memory computers. Challenges include enabling parallelism while dealing with Python's Global Interpreter Lock (GIL), and implementing distributed garbage collection efficiently. 3 Qualifications ================ Normally applicants to the Computer Science PhD program at UNB require a Master's degree in computer science or a closely related area. This project will require substantial hands-on and experimental work, and being comfortable with Python and C++. Familiarity with Linux and Open Source Software development would be a plus. For position I, exposure to programming language concepts like GC, JIT, and bytecode would be helpful. For position II, experience with parallel programming frameworks and/or languages such as MPI, OpenMP, X10 is an asset. 4 Environment ============= This project is supported by the IBM Centre for Advanced Studies (Atlantic) at the University of New Brunswick [5]. We have a lively group of students, postdocs, and research assistants working on related problems. Students work closely with both UNB researchers and technical experts from IBM, gaining valuable perspective and experience. 5 Support ========= These positions are "fully funded"; the exact funding package is subject to finalization but will be consistent with other fully funded students in Computer Science at UNB. You can find some information about expenses on the UNB web site [6]. 6 Contact ========= Send your resumé and unofficial transcripts by email to Stephen MacKay <smackay3(a)unb.ca> Please specify which position(s) you are interested in. [1]: [http://www.eclipse.org/omr/] [2]: [http://www.python.org] [3]: [http://www.pypy.org] [4]: [http://www.pgas.org/] [5]: [http://www.unb.ca/research/casatlantic/] [6]: [http://www.unb.ca/fredericton/studentservices/international/new_internation…]

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Delimited Continuations in PyPy?
by Timothy Baldridge 16 Dec '17

16 Dec '17

I recently came across this paper: https://www.microsoft.com/en-us/research/publication/implementing-algebraic… The gist is that they use setjmp/longjmp to create delimited continuations in compliant C99. It seems like this method is fairly close to what PyPy already does with stacklets. Any reason why this couldn't be ported to PyPy? Of course there'd have to be some sort of stack integration as with stacklets, but it seems that that mostly boils down to making sure the GC has a way to trace the bits of the stack contained in the continuations. I'm considering trying my hand at using their library via rffi, and copying what I need from _stacklet_shadowstack.py. But perhaps there's something I'm missing that makes this a no-go from the start. Thanks, Timothy Baldridge

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Does pypy 58 arm version support numpy?
by Gelin Yan 08 Sep '17

08 Sep '17

Hi All When I tried to use pip to install numpy, I got some compiler failtures. I want to know whether pypy arm version fully support numpy. OS: raspbian Gcc version: 4.9.2 Pypy version: 5.8 Hardware: raspberry pi 3 Regards gelin yan

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PyBaseExceptionObject has no member named ‘args’
by Stuart Axon 29 Aug '17

29 Aug '17

Found this trying to compile pycairo, is it worth opening a bug about? (I realise there is CairoCFFI, but they don't have feature parity - OTOH, CFFI probably is the way to go eventually). $ python setup.py install running install running build running build_py creating build creating build/lib.linux-x86_64-2.7 creating build/lib.linux-x86_64-2.7/cairo copying cairo/__init__.py -> build/lib.linux-x86_64-2.7/cairo running build_ext building 'cairo._cairo' extension creating build/temp.linux-x86_64-2.7 creating build/temp.linux-x86_64-2.7/cairo cc -pthread -DNDEBUG -O2 -fPIC -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/home/stu/.virtualenvs/pypy-nightly/include -c cairo/device.c -o build/temp.linux-x86_64-2.7/cairo/device.o -fno-strict-aliasing cc -pthread -DNDEBUG -O2 -fPIC -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/home/stu/.virtualenvs/pypy-nightly/include -c cairo/bufferproxy.c -o build/temp.linux-x86_64-2.7/cairo/bufferproxy.o -fno-strict-aliasing cc -pthread -DNDEBUG -O2 -fPIC -I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng16 -I/home/stu/.virtualenvs/pypy-nightly/include -c cairo/error.c -o build/temp.linux-x86_64-2.7/cairo/error.o -fno-strict-aliasing In file included from /home/stu/.virtualenvs/pypy-nightly/include/Python.h:81:0, from cairo/error.c:32: cairo/error.c: In function ‘error_init’: cairo/error.c:111:35: error: ‘PyBaseExceptionObject {aka struct <anonymous>}’ has no member named ‘args’ if(PyTuple_GET_SIZE(self->base.args) >= 2) { ^ /home/stu/.virtualenvs/pypy-nightly/include/object.h:61:39: note: in definition of macro ‘Py_SIZE’ #define Py_SIZE(ob) (((PyVarObject*)(ob))->ob_size) ^~ cairo/error.c:111:8: note: in expansion of macro ‘PyTuple_GET_SIZE’ if(PyTuple_GET_SIZE(self->base.args) >= 2) { ^~~~~~~~~~~~~~~~ In file included from /home/stu/.virtualenvs/pypy-nightly/include/Python.h:108:0, from cairo/error.c:32: cairo/error.c:112:49: error: ‘PyBaseExceptionObject {aka struct <anonymous>}’ has no member named ‘args’ status_obj = PyTuple_GET_ITEM(self->base.args, 1); ^ /home/stu/.virtualenvs/pypy-nightly/include/tupleobject.h:23:53: note: in definition of macro ‘PyTuple_GET_ITEM’ #define PyTuple_GET_ITEM(op, i) (((PyTupleObject *)(op))->ob_item[i]) ^~ In file included from /home/stu/.virtualenvs/pypy-nightly/include/Python.h:81:0, from cairo/error.c:32: cairo/error.c: In function ‘error_str’: cairo/error.c:152:36: error: ‘PyBaseExceptionObject {aka struct <anonymous>}’ has no member named ‘args’ if (PyTuple_GET_SIZE(self->base.args) >= 1) { ^ /home/stu/.virtualenvs/pypy-nightly/include/object.h:61:39: note: in definition of macro ‘Py_SIZE’ #define Py_SIZE(ob) (((PyVarObject*)(ob))->ob_size) ^~ cairo/error.c:152:9: note: in expansion of macro ‘PyTuple_GET_SIZE’ if (PyTuple_GET_SIZE(self->base.args) >= 1) { ^~~~~~~~~~~~~~~~ In file included from /home/stu/.virtualenvs/pypy-nightly/include/Python.h:108:0, from cairo/error.c:32: cairo/error.c:153:56: error: ‘PyBaseExceptionObject {aka struct <anonymous>}’ has no member named ‘args’ return PyObject_Str(PyTuple_GET_ITEM(self->base.args, 0)); ^ /home/stu/.virtualenvs/pypy-nightly/include/tupleobject.h:23:53: note: in definition of macro ‘PyTuple_GET_ITEM’ #define PyTuple_GET_ITEM(op, i) (((PyTupleObject *)(op))->ob_item[i]) ^~ error: command 'cc' failed with exit status 1

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GIL removal
by Brad Kish 16 Aug '17

16 Aug '17

The blog post on the GIL removal work seems to indicate that the work is gated on “interest of the community and the commercial partners”. How is this interest going to be measured? We use pypy in production at Arctic Wolf Networks, and have several cases where this change could benefit our use cases. We would be interested in helping support this project. Brad.

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mixed embedding and cpyext access`
by David Callahan 11 Aug '17

11 Aug '17

The Boost libraries in their test jigs use a mixture of an embedded API and direct access to the methods in Python.h. Below is an example which compiles with the py3.5 branch, correctly prints “hello world” but then faults with an message: “Invalid RPython operation (NULL ptr or bad array index)”. Is this kind of mixing of the two interfaces supported? Thanks --david #include <Python.h> #include <PyPy.h> #include <assert.h> int main() { rpython_startup_code(); int err = pypy_setup_home((char*)"/home/dcallahan/local/pypy", /*verbbose*/1); pypy_execute_source("print('hello world')"); const char *s = "'abcdefg'.upper()"; PyObject *obj = ::PyUnicode_FromString(s); return 0; }

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Cocos2D - works for me.
by Stuart Axon 11 Aug '17

11 Aug '17

Hi, Today I was trying out Cocos2D in PyPy, it seems work :) I don't have any of my own projects to try, but all the examples that come with it seem to work, I also tried some tutorials which seemed to work as well. Not sure if I use use it enough to be able to say "it works", but I wasn't able to break it, los-cocos/cocos | | | | | | | | | | | los-cocos/cocos cocos - graphic library for games and multimedia, for python language on PC-like hardware | | | S++

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Pypy seems not so active recently since I can't find any talk related to pypy in PYCON 2017
by Meide Zhao 05 Aug '17

05 Aug '17

Hi all, I'm looking for a recent talk on pypy but can't find one in PYCON 2017. It seems pypy is not so hot recently. Can someone give us status and the future direction on pypy? It seems cpython will stay active for a long time but pypy which seems better than llvm is going to the right direction for compiler technology. Thanks, Meide

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Re: [pypy-dev] Pypy seems not so active recently since I can't find any talk related to pypy in PYCON 2017
by rymg19＠gmail.com 05 Aug '17

05 Aug '17

Not so active? https://morepypy.blogspot.com/2017/06/pypy-v58-released.html https://morepypy.blogspot.com/2017/07/binary-wheels-for-pypy.html? -- Ryan (ライアン) Yoko Shimomura, ryo (supercell/EGOIST), Hiroyuki Sawano >> everyone elsehttp://refi64.com On Aug 4, 2017 at 5:02 PM, <Meide Zhao <zhao.meide(a)gmail.com>> wrote: Hi all, I'm looking for a recent talk on pypy but can't find one in PYCON 2017. It seems pypy is not so hot recently. Can someone give us status and the future direction on pypy? It seems cpython will stay active for a long time but pypy which seems better than llvm is going to the right direction for compiler technology. Thanks, Meide _______________________________________________ pypy-dev mailing list pypy-dev(a)python.org https://mail.python.org/mailman/listinfo/pypy-dev

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pypy-dev August 2017