Minutes_2020_03_24

Numba Meeting: 2020-03-24

Attendees: Graham, Siu, Todd, Ehsan, Val, Aaron, Pearu, Guilherme, Stuart

0. Feature Discussion

• preparing for 0.49.0RC1:
  • SSA PR now unblocked
  • aiming for Thurs
  • shim PR, and 1st class function making progress and in review
• TODO:
  • check cuda testsuite on our DGX for segfault
  • TARDIS SN - request for GSoC supervision.
    • related: https://github.com/numba/numba/issues/5394
    • Mentoring from us is needed

1. New Issues

• #5408 - test_set_registers_57 fails (possibly specific to Maxwell)
• #5407 - numba.errors.TypingError
  • user question
• #5405 - Stange behavior with Numba (Could not load llvmlite.dll)
  • libc problem?
• #5404 - Yielding numpy array results in segfault
  • confirmed
• #5401 - TypingError: Failed in nopython mode pipeline (step: nopython frontend) non-precise type pyobject
• #5398 - How well can CUDA be compatible with class
• ** #5397 - How to change structure of a custom object in place?
  • work proposed: refactor the common code in creating mutable structs from jitclasses
• #5395 - Unable to define cfunc with scalar bool* and an njited UDF
  • not hard.
  • problem with datamodel mismatch
• #5394 - Suggestion for Numba/TARDIS-SN GSoC project
• #5392 - Problem with cuda

Closed Issues

• #5403 - How to call a cython function from within @njit compiled code?

2. New PRs

• #5402 - testing things for #5351
• #5399 - [WIP] Add: iterate empty tuple
• **** #5396 - Add support for tuple concatenation to array analysis.
• #5393 - Update Integer and _NPDatetimeBase classes to use @property for bitwidth/signed & unit respectively

Closed PRs

• #5406 - [WIP] Fix #4809 for device only (i.e. not simulator)
• #5400 - Fix #4954, and some other small CUDA testsuite fixes

3. Next Release: Version 0.49.0, RC=March 26

• Requests for 0.49

  • TBD

• Future Relase Plan

  1. LLVM9
  2. Explore LLVM pass for refcount pruning