Minutes_2024_04_02

Numba Meeting: 2024-04-02

Attendees: Siu Kwan Lam, Todd Anderson, Da Li, Guilherme, Graham markall, Tesla42 FPOC (last week): Guilherme FPOC (incoming): Graham

NOTE: All communication is subject to the Numba Code of Conduct.

Please refer to this calendar for the next meeting date.

0. Discussion

• NP2 status
  • NP2 binary compatibility PR is merged
  • Buildfarm doing build on NP2 and test on NP1 + NP2
    • also build on NP1 and test on NP1
  • Refactoring builtin ufuncs to use libm
  • ufunc.resolve_dtypes for NEP50
  • Currently, splitting type system for NP2

@njit
def foo(a):
    x = math.log2(a)  # python float
    y = np.log2(a)  # np.float64
    return x + y  # np.float64

@njit
def bar(a):
    x = foo(a)  # np.float64
    return math.log2(x)

• Plan to release Numba 0.60.0 ASAP when NP2 is official released
  • IMPORTANT upcoming release do not have Typecast Semantic Compatibility against NP2.
• Re-enable Coverage on CI?
  • related PR: https://github.com/numba/numba/pull/9508
  • Siu will try codecov
• State of parallel dictionary implementation:
  • object based implementation: https://github.com/TheTesla/py-par-dict/blob/master/pardictimpl.py

New "Ready for Review" PRs

1. New Issues

• numba#9512 - Add support for more random functions.
• numba#9514 - Type inference leads to libNVVM bugs on 0.59.1
• numba#9515 - jitclass apraisal and performance revisit request.
• numba#9518 - numba's bug with prange without warning
• numba#9519 - [Feature Request] key_equal, copy_key, zero_key in dict is slower than direct assignment if key type is primitive

Closed Issues

• numba#9517 - Numba doing worse than raw Python on default example

2. New PRs

• numba#9513 - Type system implementation #1: Added initial implementation for a new type system using redundancies.
• numba#9516 - Replace context.compile_internal by @overload in cmathimpl.py
• numba#9520 - give primitive types a faster key&value compare, copy, and zero methods in TypedDict
• llvmlite#1036 - LLVM 15 conda recipe

Closed PRs

3. Short-term Roadmap

2024-gantt: TBD 2023-gantt: https://github.com/numba/numba/issues/8971