Minutes_2020_06_30

Numba Meeting: 2020-06-30

Attendees: Hameer, Stuart, Todd, Pearu, Ehsan, Siu, Val, Guilherme,

0. Feature Discussion

• 0.50.1 released
• roadmap?
  • core maintainers may not have time given
  • expand to have more contributors
  • list of simple things:
    • labels: "good-first-issues", "good-second-issues"
  • more internal docs
  • expectation management to get up to speed in numba.
    • Val: timeframe >6mos to 24mos
  • bootstrap new numba devs with help from other numba devs
  • Guilherme thinks numpy/scipy functions are easy for newcomers
  • Roadmap theme for time frame
    • wishlist or priority list for community to tackle
    • many items are researchy with hard to estimate ETA
  • Add a list of easier issues (largely refactor):
    • point to code
  • owning maintenance of parts of numba
• Decide on how to proceeed with https://github.com/numba/llvmlite/pull/602
  • Rebuild wheels instructions https://github.com/numba/llvmlite/tree/master/buildscripts/manylinux1
  • No patch, but rebuild wheels

1. New Issues

• #5933 - Wrong result with np.linalg.inv for 1x1 size, modifies input in-place
  • has a PR fix
• #5932 - Unification error for datetimes (minimum/maximum)
  • np1.18
  • unification error
• #5931 - Support for exec() at precompile time
  • need answering
• #5930 - Strange/wrong Error message when giving list of function pointers to jitted function
  • need answering
• #5929 - numpy ediff1d tests have TypeError in to_end (numpy 1.19)
  • remove a patch we made to fix older numpy
• #5927 - SVML weirdness 🙃
  • Maybe an LLVM bug
  • non-deterministic
• #5924 - allow staticmethod's to be compiled with jit(forceobj=True)
  • Good idea, but perhaps need a different design
  • Use a decorator on the function instead
• #5923 - Failed in nopython mode pipeline (step: convert to parfors)
  • Might work as R*=255 + m * 255
  • Hopefully precedence is correct
• #5917 - Release 0.50.1 checklist
  • Closing as released
• #5916 - Fix numba.typed.List pre-allocation
• #5915 - Accelerate numba.typed.List constructor when used from the interpreter.
• #5911 - Feature Request: __hash__ for Enum and IntEnum
• #5910 - AOT compiled function inside JIT function fails.
  • Can probably make this work, with a little bit of help
• #5909 - typedlist slower than Python list
• #5908 - TBB threading layer deadlock on terminate
• #5907 - Numpy wrappers not used for scalar return values
  • Yes, it's an issue
  • Numba only has one scalar type
• #5905 - Yielding while iterating over a typed list results in a segfault
  • Parent in iterator is null
  • Might be really hard
• #5904 - Performance issue with prange when an user-defined function is called
• #5903 - Keyword-only arguments and default arguments always do the wrong thing when combined

Closed Issues

• #5926 - operands on datetime64 data types

2. New PRs

• #5925 - Use np.inf and -np.inf for max and min float values respectively.
• #5922 - Reduce objmode and unpickling overhead
• #5921 - Don't try to analyze the broadcast if the shape of some part is not known.
• #5906 - Fix optional type in static_getitem

Closed PRs

• #5920 - Update master changelog for latest change in 0.50.1
• #5919 - Update changelog 0.50.1
• #5918 - Fix cuda test due to #5876
• #5914 - Update change_log for 0.50.1
• #5913 - Update change_log for 0.50.1
• #5912 - Fix bad attr access on certain typing templates breaking exceptions.

3. Next Release: Version 0.51.0, RC=22 July, Final 29 July?

• Requests for 0.51

• high risk stuff for 0.51.

• 0.51 potential tasks (To be updated)

4. Upcoming tasks

• Opening up the numba meeting