Mailman 3 July 2018 - NumPy-Discussion

NumPy 1.15.0 released.
by Charles R Harris 23 Jul '18

23 Jul '18

Hi All, On behalf of the NumPy team I'm pleased to announce the release of NumPy 1.15.0rc2. This release has an unusual number of cleanups, many deprecations of old functions, and improvements to many existing functions. A total of 438 pull reguests were merged for this release, please look at the release notes <https://github.com/numpy/numpy/releases/tag/v1.15.0>for details. Some highlights are: - NumPy has switched to pytest for testing. - A new `numpy.printoptions` context manager. - Many improvements to the histogram functions. - Support for unicode field names in python 2.7. - Improved support for PyPy. - Fixes and improvements to `numpy.einsum`. The Python versions supported by this release are 2.7, 3.4-3.7. The wheels are linked with OpenBLAS v0.3.0, which should fix some of the linalg problems reported for NumPy 1.14. Wheels for this release can be downloaded from PyPI <https://pypi.org/project/numpy/1.15.0/>, source archives are available from Github <https://github.com/numpy/numpy/releases/tag/v1.15.0>. *Contributors* A total of 133 people contributed to this release. People with a "+" by their names contributed a patch for the first time. * Aaron Critchley + * Aarthi + * Aarthi Agurusa + * Alex Thomas + * Alexander Belopolsky * Allan Haldane * Anas Khan + * Andras Deak * Andrey Portnoy + * Anna Chiara * Aurelien Jarno + * Baurzhan Muftakhidinov * Berend Kapelle + * Bernhard M. Wiedemann * Bjoern Thiel + * Bob Eldering * Cenny Wenner + * Charles Harris * ChloeColeongco + * Chris Billington + * Christopher + * Chun-Wei Yuan + * Claudio Freire + * Daniel Smith * Darcy Meyer + * David Abdurachmanov + * David Freese * Deepak Kumar Gouda + * Dennis Weyland + * Derrick Williams + * Dmitriy Shalyga + * Eric Cousineau + * Eric Larson * Eric Wieser * Evgeni Burovski * Frederick Lefebvre + * Gaspar Karm + * Geoffrey Irving * Gerhard Hobler + * Gerrit Holl * Guo Ci + * Hameer Abbasi + * Han Shen * Hiroyuki V. Yamazaki + * Hong Xu * Ihor Melnyk + * Jaime Fernandez * Jake VanderPlas + * James Tocknell + * Jarrod Millman * Jeff VanOss + * John Kirkham * Jonas Rauber + * Jonathan March + * Joseph Fox-Rabinovitz * Julian Taylor * Junjie Bai + * Juris Bogusevs + * Jörg Döpfert * Kenichi Maehashi + * Kevin Sheppard * Kimikazu Kato + * Kirit Thadaka + * Kritika Jalan + * Kyle Sunden + * Lakshay Garg + * Lars G + * Licht Takeuchi * Louis Potok + * Luke Zoltan Kelley * MSeifert04 + * Mads R. B. Kristensen + * Malcolm Smith + * Mark Harfouche + * Marten H. van Kerkwijk + * Marten van Kerkwijk * Matheus Vieira Portela + * Mathieu Lamarre * Mathieu Sornay + * Matthew Brett * Matthew Rocklin + * Matthias Bussonnier * Matti Picus * Michael Droettboom * Miguel Sánchez de León Peque + * Mike Toews + * Milo + * Nathaniel J. Smith * Nelle Varoquaux * Nicholas Nadeau, P.Eng., AVS + * Nick Minkyu Lee + * Nikita + * Nikita Kartashov + * Nils Becker + * Oleg Zabluda * Orestis Floros + * Pat Gunn + * Paul van Mulbregt + * Pauli Virtanen * Pierre Chanial + * Ralf Gommers * Raunak Shah + * Robert Kern * Russell Keith-Magee + * Ryan Soklaski + * Samuel Jackson + * Sebastian Berg * Siavash Eliasi + * Simon Conseil * Simon Gibbons * Stefan Krah + * Stefan van der Walt * Stephan Hoyer * Subhendu + * Subhendu Ranjan Mishra + * Tai-Lin Wu + * Tobias Fischer + * Toshiki Kataoka + * Tyler Reddy + * Unknown + * Varun Nayyar * Victor Rodriguez + * Warren Weckesser * William D. Irons + * Zane Bradley + * cclauss + * fo40225 + * lapack_lite code generator + * lumbric + * luzpaz + * mamrehn + * tynn + * xoviat Cheers, Charles Harris

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nominations sought for NumFOCUS board of directors
by Ralf Gommers 21 Jul '18

21 Jul '18

Hi all, Not everyone may be on a NumFOCUS mailing list or read Planet SciPy/Python, so I thought it'd be good to point this out: https://www.numfocus.org/blog/numfocus-to-hold-2018-elections-for-board-of-… >From my perspective, it would be great to see some candidates who are actively involved in sponsored projects, and some who are actively involved in organising events/meetups. Cheers, Ralf

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Fwd: [NumFOCUS Projects] NumFOCUS Summit Registration
by Ralf Gommers 21 Jul '18

21 Jul '18

Hi all, In September the NumFOCUS Summit for 2018 will be held in New York. NumPy can send one representative (or a couple, but costs are only covered for one person). We opened this opportunity up to members of the Steering Council first, however it doesn't look like anyone is in the position to attend. Therefore we'd now like to ask if anyone else would like to attend. Rules of the game: you do need a strong affiliation with the project (e.g. you have commit right, have been contributing for a while, have been hired to work on NumPy, etc.); in case multiple people are interested then the NumPy Steering Council will make a decision. If you're interested, please reply here or off-list. Cheers, Ralf ---------- Forwarded message ---------- From: Leah Silen <leah(a)numfocus.org> Date: Wed, Jun 27, 2018 at 4:35 PM Subject: [NumFOCUS Projects] NumFOCUS Summit Registration To: projects(a)numfocus.org *Hi all,We’d like to share some additional details on this year’s NumFOCUS Project Summit. The Sustainability Workshop portion of the Summit (Sept 22-23) is an opportunity for projects to focus on creating roadmaps and developing strategies for long-term sustainability. This year we would like your help in generating the content and driving the direction of the workshop. We’ll be reaching out for your suggestions on specific areas you would like to see addressed.The Project Forum for Core Developers and Critical Users (Sep 24-25) is a meeting, open to the public, for critical users to directly interact with the core developers of NumFOCUS projects. The goal is to connect you with resources to advance your community roadmaps while beginning a dialogue with key stakeholders. The event will be limited to 150 attendees. Again, we will be giving participants (both projects and users) an opportunity to drive the content and agenda. NumFOCUS will cover travel expenses for one representative per sponsored project. This includes an airfare allotment of $600 and hotel accommodations for 4 nights in New York City. The airfare amount is an average; we understand international travel costs will exceed this amount. Please contact us if you would like to have more than one rep attend. When choosing who will attend, we ask that you prioritize members of your leadership team or steering committee as this will help your project get the most benefit out of the Summit experience. In order to book hotel rooms, it is urgent that we know who will be attending as soon as possible. We’ve set up the following site for project leads to register: <link removed by Ralf>Once again, if you’re interested in working on any portion of the summit, we would love your input and leadership in setting the agenda. Please reach out to summit(a)numfocus.org <summit(a)numfocus.org> if you would like to be involved. NumFOCUS Summit Committee-Andy TerrelJames PowellLeah SilenGina HelfrichJim Weiss* --- Leah Silen Executive Director, NumFOCUS leah(a)numfocus.org 512-222-5449 <http://www.numfocus.org/> <https://twitter.com/NumFOCUS> <https://www.facebook.com/NumFOCUS/> -- You received this message because you are subscribed to the Google Groups "Fiscally Sponsored Project Representatives" group. To unsubscribe from this group and stop receiving emails from it, send an email to projects+unsubscribe(a)numfocus.org. To post to this group, send email to projects(a)numfocus.org. Visit this group at https://groups.google.com/a/numfocus.org/group/projects/ . To view this discussion on the web visit https://groups.google.com/a/ numfocus.org/d/msgid/projects/CALWv6uLTL1EFFh%2BsaV3YTGVtfVUm01ey4GTnY1SP% 3DLbYNCS8ZA%40mail.gmail.com <https://groups.google.com/a/numfocus.org/d/msgid/projects/CALWv6uLTL1EFFh%2…> .

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Upcoming 1.15.0 release
by Charles R Harris 20 Jul '18

20 Jul '18

Hi All, Just a heads up that the NumPy 1.15.0 release is planned for next Monday, Jul 23. If you have encountered a problem with the pre-release, please yell. Chuck

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ANN: Numexpr 2.6.6
by Robert McLeod 16 Jul '18

16 Jul '18

========================== Announcing Numexpr 2.6.6 ========================== Hi everyone, This is a bug-fix release. Thanks to Mark Dickinson for a fix to the thread barrier that occassionally suffered from spurious wakeups on MacOSX. Project documentation is available at: http://numexpr.readthedocs.io/ Changes from 2.6.5 to 2.6.6 --------------------------- - Thanks to Mark Dickinson for a fix to the thread barrier that occassionally suffered from spurious wakeups on MacOSX. What's Numexpr? --------------- Numexpr is a fast numerical expression evaluator for NumPy. With it, expressions that operate on arrays (like "3*a+4*b") are accelerated and use less memory than doing the same calculation in Python. It has multi-threaded capabilities, as well as support for Intel's MKL (Math Kernel Library), which allows an extremely fast evaluation of transcendental functions (sin, cos, tan, exp, log...) while squeezing the last drop of performance out of your multi-core processors. Look here for a some benchmarks of numexpr using MKL: https://github.com/pydata/numexpr/wiki/NumexprMKL Its only dependency is NumPy (MKL is optional), so it works well as an easy-to-deploy, easy-to-use, computational engine for projects that don't want to adopt other solutions requiring more heavy dependencies. Where I can find Numexpr? ------------------------- The project is hosted at GitHub in: https://github.com/pydata/numexpr You can get the packages from PyPI as well (but not for RC releases): http://pypi.python.org/pypi/numexpr Documentation is hosted at: http://numexpr.readthedocs.io/en/latest/ Share your experience --------------------- Let us know of any bugs, suggestions, gripes, kudos, etc. you may have. Enjoy data! -- Robert McLeod, Ph.D. robbmcleod(a)gmail.com robbmcleod(a)protonmail.com robert.mcleod(a)hitachi-hhtc.ca www.entropyreduction.al

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we held an impromptu dtype brainstorming sesison at SciPy
by Matti Picus 15 Jul '18

15 Jul '18

The stars all aligned properly and some of the steering committee suggested we put together a quick brainstorming session over what to do with dtypes. About 20 people joined in the discussion which was very productive. We began with user stories and design requirements, and asked some present to spend 5 minutes and create a straw-man implementation of what their dream dtype implementation would contain. The resulting document https://github.com/numpy/numpy/wiki/Dtype-Brainstorming will serve as the basis for a future NEP and more work toward a better, user-extensible dtype. More comments are welcome, the discussion is only at the beginning stages. Matti

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Proposal to accept NEP 19: Random Number Generator Policy
by Robert Kern 14 Jul '18

14 Jul '18

I propose that we accept NEP 19: Random Number Generator Policy: http://www.numpy.org/neps/nep-0019-rng-policy.html The discussions on this NEP were productive and led to a major revision in how stable random number streams will be maintained in the future for the purpose of unit testing. The current version is much more elegant and imposes less pain on downstream projects. I'd like to thank everyone who participated in that discussion: you really did a good job at clarifying the issues. The NEP is much better because of your input. If there are no substantive objections within 7 days from this email, then the NEP will be accepted; see NEP 0 for more details: http://www.numpy.org/neps/nep-0000.html -- Robert Kern

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Looking for description/insight/documentation on matmul
by jeff saremi 10 Jul '18

10 Jul '18

Is there any resource available or anyone who's able to describe matmul operation of matrices when n > 2? The only description i can find is: "If either argument is N-D, N > 2, it is treated as a stack of matrices residing in the last two indexes and broadcast accordingly." which is very cryptic to me. Could someone break this down please? when a [2 3 5 6] is multiplied by a [7 8 9] what are the resulting dimensions? is there one answer to that? Is it deterministic? What does "residing in the last two indices" mean? What is broadcast and where? thanks jeff

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NumPy 1.15.0rc2 released.
by Charles R Harris 10 Jul '18

10 Jul '18

Hi All, On behalf of the NumPy team I'm pleased to announce the release of NumPy 1.15.0rc2. This release has an unusual number of cleanups, many deprecations of old functions, and improvements to many existing functions. A total of 435 pull reguests were merged for this release, please look at the release notes <https://github.com/numpy/numpy/releases/tag/v1.15.0rc2>for details. Some highlights are: - NumPy has switched to pytest for testing. - A new `numpy.printoptions` context manager. - Many improvements to the histogram functions. - Support for unicode field names in python 2.7. - Improved support for PyPy. - Fixes and improvements to `numpy.einsum`. The Python versions supported by this release are 2.7, 3.4-3.7. The wheels are linked with OpenBLAS v0.3.0, which should fix some of the linalg problems reported for NumPy 1.14. Wheels for this release can be downloaded from PyPI <https://pypi.org/project/numpy/1.15.0rc2/>, source archives are available from Github <https://github.com/numpy/numpy/releases/tag/v1.15.0rc2>. A total of 131 people contributed to this release. People with a "+" by their names contributed a patch for the first time. - Aaron Critchley + - Aarthi + - Aarthi Agurusa + - Alex Thomas + - Alexander Belopolsky - Allan Haldane - Anas Khan + - Andras Deak - Andrey Portnoy + - Anna Chiara - Aurelien Jarno + - Baurzhan Muftakhidinov - Berend Kapelle + - Bernhard M. Wiedemann - Bjoern Thiel + - Bob Eldering - Cenny Wenner + - Charles Harris - ChloeColeongco + - Chris Billington + - Christopher + - Chun-Wei Yuan + - Claudio Freire + - Daniel Smith - Darcy Meyer + - David Abdurachmanov + - David Freese - Deepak Kumar Gouda + - Dennis Weyland + - Derrick Williams + - Dmitriy Shalyga + - Eric Cousineau + - Eric Larson - Eric Wieser - Evgeni Burovski - Frederick Lefebvre + - Gaspar Karm + - Geoffrey Irving - Gerhard Hobler + - Gerrit Holl - Guo Ci + - Hameer Abbasi + - Han Shen - Hiroyuki V. Yamazaki + - Hong Xu - Ihor Melnyk + - Jaime Fernandez - Jake VanderPlas + - James Tocknell + - Jarrod Millman - Jeff VanOss + - John Kirkham - Jonas Rauber + - Jonathan March + - Joseph Fox-Rabinovitz - Julian Taylor - Junjie Bai + - Juris Bogusevs + - Jörg Döpfert - Kenichi Maehashi + - Kevin Sheppard - Kimikazu Kato + - Kirit Thadaka + - Kritika Jalan + - Lakshay Garg + - Lars G + - Licht Takeuchi - Louis Potok + - Luke Zoltan Kelley - MSeifert04 + - Mads R. B. Kristensen + - Malcolm Smith + - Mark Harfouche + - Marten H. van Kerkwijk + - Marten van Kerkwijk - Matheus Vieira Portela + - Mathieu Lamarre - Mathieu Sornay + - Matthew Brett - Matthew Rocklin + - Matthias Bussonnier - Matti Picus - Michael Droettboom - Miguel Sánchez de León Peque + - Mike Toews + - Milo + - Nathaniel J. Smith - Nelle Varoquaux - Nicholas Nadeau, P.Eng., AVS + - Nick Minkyu Lee + - Nikita + - Nikita Kartashov + - Nils Becker + - Oleg Zabluda - Orestis Floros + - Pat Gunn + - Paul van Mulbregt + - Pauli Virtanen - Pierre Chanial + - Ralf Gommers - Raunak Shah + - Robert Kern - Russell Keith-Magee + - Ryan Soklaski + - Samuel Jackson + - Sebastian Berg - Siavash Eliasi + - Simon Conseil - Simon Gibbons - Stefan Krah + - Stefan van der Walt - Stephan Hoyer - Subhendu + - Subhendu Ranjan Mishra + - Tai-Lin Wu + - Tobias Fischer + - Toshiki Kataoka + - Tyler Reddy + - Unknown + - Varun Nayyar - Victor Rodriguez + - Warren Weckesser - William D. Irons + - Zane Bradley + - fo40225 + - lapack_lite code generator + - lumbric + - luzpaz + - mamrehn + - tynn + - xoviat Cheers Chuck

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NumPy 1.15.0rc1 released
by Charles R Harris 09 Jul '18

09 Jul '18

Hi All, On behalf of the NumPy team I'm pleased to announce the release of NumPy 1.15.0rc1. This release has an unusual number of cleanups, many deprecations of old functions, and improvements to many existing functions. A total of 423 pull reguests were merged for this release, please look at the release notes <https://github.com/numpy/numpy/releases/tag/v1.15.0rc1>for details. Some highlights are: - NumPy has switched to pytest for testing. - A new `numpy.printoptions` context manager. - Many improvements to the histogram functions. - Support for unicode field names in python 2.7. - Improved support for PyPy. The Python versions supported by this release are 2.7, 3.4-3.6. The wheels are linked with OpenBLAS 3.0, which should fix some of the linalg problems reported for NumPy 1.14, and the source archives were created using Cython 0.28.2 and should work with the upcoming Python 3.7. Wheels for this release can be downloaded from PyPI <https://pypi.org/project/numpy/#description>, source archives are available from Github <https://github.com/numpy/numpy/releases/tag/v1.15.0rc1>. A total of 128 people contributed to this release. People with a "+" by their names contributed a patch for the first time. - Aaron Critchley + - Aarthi + - Aarthi Agurusa + - Alex Thomas + - Alexander Belopolsky - Allan Haldane - Anas Khan + - Andras Deak - Andrey Portnoy + - Anna Chiara - Aurelien Jarno + - Baurzhan Muftakhidinov - Berend Kapelle + - Bernhard M. Wiedemann - Bjoern Thiel + - Bob Eldering - Cenny Wenner + - Charles Harris - ChloeColeongco + - Chris Billington + - Christopher + - Chun-Wei Yuan + - Claudio Freire + - Daniel Smith - Darcy Meyer + - David Abdurachmanov + - David Freese - Deepak Kumar Gouda + - Dennis Weyland + - Derrick Williams + - Dmitriy Shalyga + - Eric Cousineau + - Eric Larson - Eric Wieser - Evgeni Burovski - Frederick Lefebvre + - Gaspar Karm + - Geoffrey Irving - Gerhard Hobler + - Gerrit Holl - Guo Ci + - Hameer Abbasi + - Han Shen - Hiroyuki V. Yamazaki + - Hong Xu - Ihor Melnyk + - Jaime Fernandez - Jake VanderPlas + - James Tocknell + - Jarrod Millman - Jeff VanOss + - John Kirkham - Jonas Rauber + - Jonathan March + - Joseph Fox-Rabinovitz - Julian Taylor - Junjie Bai + - Juris Bogusevs + - Jörg Döpfert - Kenichi Maehashi + - Kevin Sheppard - Kimikazu Kato + - Kirit Thadaka + - Kritika Jalan + - Lakshay Garg + - Lars G + - Licht Takeuchi - Louis Potok + - Luke Zoltan Kelley - MSeifert04 + - Mads R. B. Kristensen + - Malcolm Smith + - Mark Harfouche + - Marten H. van Kerkwijk + - Marten van Kerkwijk - Matheus Vieira Portela + - Mathieu Lamarre - Mathieu Sornay + - Matthew Brett - Matthew Rocklin + - Matthias Bussonnier - Matti Picus - Michael Droettboom - Miguel Sánchez de León Peque + - Mike Toews + - Milo + - Nathaniel J. Smith - Nelle Varoquaux - Nicholas Nadeau + - Nick Minkyu Lee + - Nikita + - Nikita Kartashov + - Nils Becker + - Oleg Zabluda - Orestis Floros + - Pat Gunn + - Paul van Mulbregt + - Pauli Virtanen - Pierre Chanial + - Ralf Gommers - Raunak Shah + - Robert Kern - Russell Keith-Magee + - Ryan Soklaski + - Samuel Jackson + - Sebastian Berg - Siavash Eliasi + - Simon Conseil - Simon Gibbons - Stefan Krah + - Stefan van der Walt - Stephan Hoyer - Subhendu + - Subhendu Ranjan Mishra + - Tai-Lin Wu + - Tobias Fischer + - Toshiki Kataoka + - Tyler Reddy + - Varun Nayyar - Victor Rodriguez + - Warren Weckesser - Zane Bradley + - fo40225 - lumbric + - luzpaz + - mamrehn + - tynn + - xoviat Cheers Chuck

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