Minutes_2019_02_04

Numba Meeting: 2019-02-04

Attendees: Siu, Stan, Stuart, Ehsan, Todd

0. Feature Discussion

• llvmlite LLVM pass addition PR
  • Hard to figure out how to make this work on Windows given current static linking strategy
• numba 0.42.1 and llvmlite 0.27.1
  • fixes for OSX wheels
  • no updates for conda or any other wheel platforms

1. New issues

• #3733 - tuple getitem with unsigned index breaks parfors lowering
• #3732 - Global list of strings
• #3729 - array broadcast fails when using njit(parallel=True)
• #3728 - Python and Numba Have Different Behaviors with Jitclass and Deferred Type
  • Siu will investigate
• #3726 - np.cumsum returns np.int64 not np.int32 when applied to an array of np.int32
  • NumPy + integer types + operating systems == confusing
  • Numba's typing rule doesn't follow the NumPy specific behavior for this function
• #3724 - RewriteArrayOfConsts incorrectly deleting build_list for empty list.
  • Fix available in PR below
  • Need to RewriteRewriteArrayOfConsts
• #3723 - Implement copy_to_host() for negative strided array
• #3721 - @stencil support for more complex indexing scenarios and slice bound computation

2. Open PRs

• #3734 - Update changelog for 0.42.1
  • ready to merge
• #3731 - WIP: support for heapq
  • in progress
  • looks good so far
• #3730 - Implement getitem and setitem for jitclasses
  • Needs review
• #3727 - Remove dels for known dead vars.
  • Discussing test strategy
• #3725 - Fix invalid removal of dead empty list
• #3722 - Fix #3705: slicing error with negative strides
  • ready for review
• #3720 - improve error msg about invalid signature [WIP]

Old Active

See https://github.com/numba/numba/projects/10

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4. Next Release: Version 0.43, RC=Feb 26?, Final=March 5?

• Initial dictionary support
• ???