Correction to those minutes: SG6 in Kona were happy with the removal of
vectors; they originally sent the paper to LEWG WITH vectors at Cologne or
Belfast I think, which were then subsequently removed after Prague.

On Thu, 9 Mar 2023 at 20:20, Michael Wong via SG19 <sg19_at_[hidden]>
wrote:

>
>
> On Tue, Mar 7, 2023 at 11:19 AM Michael Wong <fraggamuffin_at_[hidden]>
> wrote:
>
>> Hi all, SG19 Machine Learning meeting will focus on Matrix. We still
>> want to drive graph and stats to completion and we can have brief moments
>> to review where they are depending on how much Matrix takes up. Are there
>> any other suggested topics? Thank you.
>>
>>
>> Michael Wong is inviting
>> you to a scheduled Zoom meeting.
>>
>> Topic: SG19 monthly
>> Time: 02:00 PM Eastern Time (US and Canada)
>> Every month on the Second Thu,
>>
>>
>> Join from PC, Mac, Linux, iOS or Android:
>>
>> https://iso.zoom.us/j/93084591725?pwd=K3QxZjJlcnljaE13ZWU5cTlLNkx0Zz09
>> Password: 035530
>>
>> Or iPhone one-tap :
>> US: +13017158592,,93084591725# or +13126266799,,93084591725#
>> Or Telephone:
>> Dial(for higher quality, dial a number based on your current
>> location):
>> US: +1 301 715 8592 or +1 312 626 6799 or +1 346 248 7799 or +1
>> 408 638 0968 or +1 646 876 9923 or +1 669 900 6833 or +1 253 215 8782
>> or 877 853 5247 (Toll Free)
>> Meeting ID: 930 8459 1725
>> Password: 035530
>> International numbers available: https://iso.zoom.us/u/agewu4X97
>>
>> Or Skype for Business (Lync):
>> https://iso.zoom.us/skype/93084591725
>>
>> Agenda:
>>
>> 1. Opening and introductions
>>
>> The ISO Code of conduct:
>> https://www.iso.org/files/live/sites/isoorg/files/store/en/PUB100397.pdf
>>
>> IEC Code of Conduct:
>>
>> https://www.iec.ch/basecamp/iec-code-conduct-technical-work
>>
>> ISO patent policy.
>>
>>
>> https://isotc.iso.org/livelink/livelink/fetch/2000/2122/3770791/Common_Policy.htm?nodeid=6344764&vernum=-2
>>
>> The WG21 Practices and Procedures and Code of Conduct:
>>
>> https://isocpp.org/std/standing-documents/sd-4-wg21-practices-and-procedures
>>
>> 1.1 Roll call of participants
>>
> Guy Davidson, Phil Ratzloff, Scott Macmillan, Dounia Khaldi,
> Benjamin Brock, Boguslaw Cyganek, Jens Maurer, Nathan Owen, Oliver Rosten,
> Rene Rivera, Richard Dosselmann, Michael Wong, Mohammed Osama
>
>>
>>
>> 1.2 Adopt agenda
>>
>> 1.3 Approve minutes from previous meeting, and approve publishing
>> previously approved minutes to ISOCPP.org
>>
>> 1.4 Action items from previous meetings
>>
>> 2. Main issues (125 min)
>>
>> 2.1 General logistics
>>
>> Meeting plan, focus on one paper per meeting but does not preclude other
>> paper
>> updates:
>>
>> CPPCON minutes:
>> https://wiki.edg.com/bin/view/Wg21virtual2022-07/SG14
>>
>>
>> Nov 10, 2022 02:00 PM ET: Cancelled due to Kona F2F
>> Dec 8, 2022 02:00 PM ET: Graph
>> Jan 12, 2023 02:00 PM ET: Stats
>> Feb 9, 2023 02:00 PM ET: F2F cancelled
>> Mar 9, 2023 02:00 PM ET: Matrix
>>
>>
>> ISO meeting status
>>
>> future C++ Std meetings
>>
>> 2.2 Paper reviews
>>
>> 2.2.1: ML topics
>>
>> 2.2.1.1 Graph Proposal Phil Ratsloff et al
>>
>> Update: need a bit more time.
>
>> Latest paper:
>>
>> Here’s a link to the paper (different than the previous paper reviewed).
>> There are some additional updates I’m planning on making before the
>> meeting.
>>
>>
>> https://docs.google.com/document/d/1OpH-xxRri7tJTtJJIZTYmSHkkrZJkdBwm9zJ7LqolfQ/edit?usp=sharing
>>
>>
>>
>>
>> P1709R3:
>>
>> https://docs.google.com/document/d/1kLHhbSTX7j0tPeTYECQFSNx3R35Mu3xO5_dyYdRy4dM/edit?usp=sharing
>>
>>
>> https://docs.google.com/document/d/1QkfDzGyfNQKs86y053M0YHOLP6frzhTJqzg1Ug_vkkE/edit?usp=sharing
>>
>> <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2119r0.html>
>>
>> <
>>
>> https://docs.google.com/document/d/175wIm8o4BNGti0WLq8U6uZORegKVjmnpfc-_E8PoGS0/edit?ts=5fff27cd#heading=h.9ogkehmdmtel
>> *>*
>>
>> Array copy semantics:
>> array copy-semantics paper P1997 "Relaxing Restrictions on Arrays",
>> https://wg21.link/p1997
>>
>> Stats feedback:
>>
>> P2376R0
>> <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p2376r0.pdf>
>> Comments
>> on Simple Statistical Functions (p1708r4): Contracts, Exceptions and
>> Special cases Johan Lundberg
>>
>> 2.2.1.2 Reinforcement Learning Larry Lewis Jorge Silva
>>
>> Reinforcement Learning proposal:
>>
>> 2.2.1.3 Differential Calculus:
>>
>>
>> https://docs.google.com/document/d/175wIm8o4BNGti0WLq8U6uZORegKVjmnpfc-_E8PoGS0/edit?ts=5fff27cd#heading=h.9ogkehmdmtel
>>
>> 2.2.1.4: Stats paper
>>
>
> Question from Oliver about checks constraints. Toeb discussed in future
> call and to post on reflector.
>
>>
>>
>> P2681R0
>> <https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p2681r0.pdf>
>> More
>> Stats Functions Richard Dosselmann, Michael Wong
>> Current github
>>
>> https://github.com/cplusplus/papers/issues/475
>>
>> https://github.com/cplusplus/papers/issues/979
>>
>> Stats review Richard Dosselman et al
>>
>> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p1708r4.pdf
>>
>> Feedback from Johan Lundberg and Oleksandr Korval
>>
>> https://isocpp.org/files/papers/D2376R0.pdf
>>
>> P1708R3: Math proposal for Machine Learning: 3rd review
>>
>> PXXXX: combinatorics: 1st Review
>>
>> *> std.org/jtc1/sc22/wg21/docs/papers/2020/p1708r2
>> <http://std.org/jtc1/sc22/wg21/docs/papers/2020/p1708r2>*
>> *> above is the stats paper that was reviewed in Prague*
>> *> http://wiki.edg.com/bin/view/Wg21prague/P1708R2SG19
>> <http://wiki.edg.com/bin/view/Wg21prague/P1708R2SG19>*
>> *>*
>> *> Review Jolanta Polish feedback.*
>> *> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2119r0.html
>> <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2119r0.html>*
>>
>>
>> 2.2.1.4: Matrix paper
>>
>> Dounia presenting:
> 1. Matrix proposal done in SYCL
> matrix type accepted both static and dynamic, but now drops dynamic_extent
> Matrix datatype
> mma_engine type is new where sizes are transparent to the user
> defined with a specified combination of type and size
> explicit data transfers
> separate memory operations and layout from compute
>
> new fns are multiply and add operation, map function (loop over scalars,
> conversion to a vector)
> extensible to add more operations
>
> mma_engine gives you query and abstract away HW details
> in SYCL this is in private memory in a work item, if shared with all work
> items, then you need a subgroup like simd which clusters these lanes to run
> in parallel, cluster subgroups to become work groups, and many workgroups
> makes up a kernel;
>
> bulk execution is like parallel for , but has no 2d range
>
> layout (mdspan), row major(right), column major (left)
>
> Robert van de Geijn at University of Texas Austin
> Some of Robert's work: https://github.com/flame/blis
>
> this offers full control, but also enables fusion when you have 2 kernels
> that dont communicate with each other in a pipelining way, breaking it up
> makes it low level but gives control
>
> gpu_execution, does P2300 serve GPU_execution? what about matrix gpu
> execution?
>
> current framework seems to assume shared cpu/GPU memory
>
> please feedback to P2300
>
> different data types, dims, element type, can take away the a, b type,
> accumulator type
>
> uint3, sint4 are not in C++
>
> uint32_t is better as parameter or size_t as sparse matrix may have more
> than 32 bits, its compile info so can take larger size.
>
> Guy Davidson:D1385R8
> https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2022/p1385r7.pdf
> construct vectors by constructing single row
> plan at Varna is to use what is presented at ACCU
> COT is the storage engine and operation types
>
> graph is a CSR graph, can this apply to this matrix, yes can put mdspan
> inside,
> close relation in sparse matrix and graphs, talk to Christian in issaquah,
> and was not sure mdspan can do sparse matrix well, using vectors.
>
>
> matrix synopsis shops lots of @includes, like deque, will need to trim
> even if the interface might requires these symbols, as all implementation
> need to get the full header, can just get the bits you need using a common
> include file
> #include is not needed in synopsis
>
> SG6 OK but did not see the vector.
> LEWG waiting. may present in Varna
>
>
>
>
>
>
>
>
>
> 2.2.3 any other proposal for reviews?
>>
>> 2.3 Other Papers and proposals
>>
>> P1416R1: SG19 - Linear Algebra for Data Science and Machine Learning
>>
>> https://docs.google.com/document/d/1IKUNiUhBgRURW-UkspK7fAAyIhfXuMxjk7xKikK4Yp8/edit#heading=h.tj9hitg7dbtr
>>
>> P1415: Machine Learning Layered list
>>
>> https://docs.google.com/document/d/1elNFdIXWoetbxjO1OKol_Wj8fyi4Z4hogfj5tLVSj64/edit#heading=h.tj9hitg7dbtr
>>
>> 2.2.2 SG14 Linear Algebra progress:
>> Different layers of proposal
>>
>> https://docs.google.com/document/d/1poXfr7mUPovJC9ZQ5SDVM_1Nb6oYAXlK_d0ljdUAtSQ/edit
>>
>> 2.5 Future F2F meetings:
>>
>> 2.6 future C++ Standard meetings:
>> https://isocpp.org/std/meetings-and-participation/upcoming-meetings
>>
>> None
>>
>> 3. Any other business
>>
>> New reflector
>>
>> http://lists.isocpp.org/mailman/listinfo.cgi/sg19
>>
>> Old Reflector
>> https://groups.google.com/a/isocpp.org/forum/#!newtopic/sg19
>> <https://groups.google.com/a/isocpp.org/forum/?fromgroups=#!forum/sg14>
>>
>> Code and proposal Staging area
>>
>> 4. Review
>>
>> 4.1 Review and approve resolutions and issues [e.g., changes to SG's
>> working draft]
>>
>> 4.2 Review action items (5 min)
>>
>> 5. Closing process
>>
>> 5.1 Establish next agenda
>>
>>
>> 5.2 Future meeting
>>
>>
>>
>>
>> Jan 2, 2022 02:00 PM ET: Stats
>> Feb 9, 2022 02:00 PM ET: F2F Cancelled
>> mar 9, 2022 02:00 PM ET: Matrix
>>
> --
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>