Mailman 3 September 2018 - pypy-dev

install pypy3 error
by Jie You 29 Sep '18

29 Sep '18

Dear, I can not install the pypy3 on my Mac. I try several times. It raised NOTTY("Can not start the debugger when stdout is capture"). I have enclosed the screenshot in the attachment. Please tell me how to fix it. Thank you so much for your kindly support. Best regards, Jie

2 1

CFFI: better performance when calling a function from address
by Dimitri Vorona 27 Sep '18

27 Sep '18

Hi all, I am JIT-generating functions in my code and call them by first ffi.cast'ing them to a function pointer. In my microbenchmarks its has pretty much the same call performance as when using cffi ABI mode (dumping the functions to a shared library first) and is around 250ns per call slower than when using API mode. I haven't looked at the generating assembly yet, but I guess pypy has to be more careful, since not all information from API mode is available. So the question is: is there any way to provide the missing information, since I basically know everything about the function behind the pointer that a compile would know? Cheers, Dimitri.

3 5

Any news on pypy3 + numpy?
by Neal Becker 23 Sep '18

23 Sep '18

https://mail.python.org/pipermail//pypy-dev/2016-September/014644.html

3 6

Effort required to support (or ignore) type annotations?
by Eli Stevens (Gmail) 08 Sep '18

08 Sep '18

Hi all, I've got a hobby project that I think would benefit from PyPy's pure-python speedups. I've been using CPython 3.6 for the type-annotation-based IDE hinting (nothing with a runtime impact). Would it be possible to get a release of PyPy that supported the syntax of type annotations? I wouldn't even need the language support, I don't think. Format strings would be keen too, but those are easy enough to change out to the old style that I'd be fine without support there. Thanks for all the work that you've all sunk into PyPy over the years. :) Cheers, Eli

2 2

tensorflow support
by Shuaib Osman 05 Sep '18

05 Sep '18

Hi, I've been using pypy on windows (32-bit) for some time now, and was wondering what the status is on the following: 1) Windowx x64 support 2) Tensorflow support on linux Now that numpy works quite well, if tensorflow manages to compile and run in pypy, it would speed up graph construction time considerably (although running a graph should be the same time as in Cpython). My particular use case is dynamically constructing complex tensorflow graphs, differentiating them and then running them once - so pypy could potentially offer a huge speedup. Thanks. Disclaimer This e-mail and any attachments thereto may contain confidential and proprietary information. This e-mail is intended for the addressee only and should only be used by the addressee for the related purpose. If you are not the intended recipient of this e-mail, you are requested to delete it immediately. Any disclosure, copying, distribution of or any action taken or omitted in reliance on this information is prohibited and may be unlawful. The views expressed in this e-mail are, unless otherwise stated, those of the sender and not those of the Investec Group of Companies or its management. E-mails cannot be guaranteed to be secure or free of errors or viruses. No liability or responsibility is accepted for any interception, corruption, destruction, loss, late arrival or incompleteness of or tampering or interfering with any of the information contained in this e-mail or for its incorrect delivery or non-delivery or for its effect on any electronic device of the recipient. For more information on the Investec Group of Companies see www.investec.com.

3 2

last benchmark run was June 2
by Matti Picus 01 Sep '18

01 Sep '18

We lost the machine that was running our benchmark suite, the last run sees to have been June2 http://speed.pypy.org/changes/. Choices: - Ask the PSF to run on the machine that is used to run benchmarks for speed.python.org. The machine, speed-python.osuosl.org, is very powerful and not heavily used, a description of it is https://speed.python.org/about/ under "The Machine". The users with psf-authorized access to the machine, from https://github.com/python/psf-chef, are fijal, zware, mattip, haypo (results of "grep python-speed -r ." in that repo) - Use one of bencher4, baroquesoftware.com, or any other pypy-specific donated machine. - Stop running benchmarks Any thoughts? Do we need nightly benchmarks or should we run them less often? Should we also be running py3.5 benchmarks? Should we upload to speed.python.org, speed.pypy.org or both? Matti

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