Minutes_2020_11_03

Numba Meeting: 2020-11-03

Attendees: Hameer, Siu, Graham, Todd, Ehsan, Stuart, Val

0.52.0RCX updates
- RC3 will be needed
RC testers
- These projects/people
  - AwkwardArray
  - UMAP
  - librosa
  - RAPIDS (Graham)
  - SDC?
  - pydata/sparse (ping Hameer).
  - Clifford?
  - Luk-f-a
- Announce testing on Discourse
- Ask all to test in their CI.
Python 3.9 ETA
- ETA: before winter holiday
- bytecode changes
Code owners
- using github OWNER file for some automation
- and additional file describe ownership of "concepts"
- LLVM Example: https://github.com/llvm/llvm-project/blob/master/llvm/CODE_OWNERS.TXT
- Todd and Graham agree to take on work they actively maintain.
- Open PR.
- Services too, like integration tests and ASV.
numba-extras
- Need to decide on name
- discourse poll
- stub repo first
- Make new repo
  - decide what to put it in as the first feature
- CI:
  - investigation cloud CI situation for direct publishing and testing
public meeting next week:
- ask for topics from discourse
0.53.0 https://hackmd.io/oKJblGCQRv-CcgMYR4k6Ag
Todd suggests bandit as a security scanning tool
- https://bandit.readthedocs.io/
- good to understand what it can do and what security model numba needs to consider.

#6439 - Numba Dict implementation lot slower than pure python Dict Implementation
- performance issue with dict
- to be investigated
#6435 - Creating coo_sparse matrix from numba typed List is significantly slower than Python list or numpy arrays
- trouble with reflected list
- x = typed.List.from_list([1,2,3]) # from outside of jitted code
  - implement it as a C-API in the TypedList wrapper
#6434 - Typed List causes IPython console to hang when gets printed
#6431 - Wrong call type resolved when overloading set of unicodes in Numba 0.52.0rc1
#6426 - Mutually-recursive nopython functions compile error
#6424 - Parallel AOT compilation
#6423 - Print over previous output
#6421 - Broadcasting doesn't works for cuda target
#6420 - Incorrect typing of something that should be a LiteralStrKeyDict and a typed Dict
- make sure it goes to LiteralStrKeyDict.
- bug in type coercion to decide LiteralStrKeyDict.
- Fix is to look at first element, check others against first, if all same DictType else StrKeyDict.

*** #6442 - Fix array analysis regression in 0.52 RC2 for tuple of 1D arrays
#6441 - Fix ASCII flag in Unicode slicing (0.52.0rc2 regression)
#6440 - Add note about performance of typed containers from the interpreter.
#6437 - Don't pass reduction variables known in an outer parfor to inner parfors when analyzing reductions.
#6432 - CUDA: Use _dispatcher.Dispatcher as base Dispatcher class
#6430 - CUDA docs: Add RNG example with 3D grid and strided loops
#6422 - CUDA: Remove deprecated items, expect CUDA 11.1