Minutes_2023_06_06

Numba Meeting: 2023-06-06

Attendees: Siu Kwan Lam, Ivan Butygin, vhaenel, AKM Khaled Talukder, Andre Masella, brandon willard, collison, Da Li, dipto, Graham Markall, Ianna Osborne, Jim Pivarski, Kaustubh, Ludger Pahler, Matthew Murray, stuart, Todd A. Anderson, Tuomas Karna, Matt P. Dziubinski, FPOC (last week): Val FPOC (incoming): Siu

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

Please refer to this calendar for the next meeting date.

0. Discussion

• Patch release update: 0.57.1 & 0.40.1
  • https://github.com/numba/llvmlite/issues/955
  • https://github.com/numba/numba/issues/9000
  • May need to delay due to potential Sparse and CUDA regresions that are being worked on now.
• Graham forgot to fix this quite bad performance regression with CUDA ufuncs
  • Plan: try to make PR to fix ASAP to get into 0.57.1 whilst Sparse issue is debugged
  • https://github.com/numba/numba/issues/8923
• Numba-MLIR presentation
  • Recorded if possible and the speaker agrees?
  • Recording at: https://www.youtube.com/watch?v=wnjJLgDmM8M
• NumPy 1.25rc1 - test against?
  • Someone needs to open a patch that tests against nightly wheels on public CI (on Azure) and just see what is broken. (Andre volunteered)

New "Ready for Review" PRs

1. New Issues

• numba#8993 - Different results with Numba 0.56 and 0.57
  • Might be 0.57.1 related
  • Kaustubh will take a look
• numba#8999 - Indexing subspace regression
  • Workaround exists
  • Feature coming to 0.58 via https://github.com/numba/numba/pull/8491
• numba#9000 - Numba 0.57.1-rc1 Checklist
• numba#9001 - Linux AArch64 RuntimeDyld relocation overflows (#8567 specific to Linux only)
  • M1 bug now on Linux too
• numba#9002 - PyOMP and Numba
  • Will remain a plugin project
  • Ping Todd
• llvmlite#955 - llvmlite v0.40.1-rc1 Checklist
• llvmlite#956 - docs: README indicates 0.39 supports LLVM 14, but ffi/build.py requires LLVM 11
  • Nothing prior to 0.40.0 supported LLVM 14
  • 0.40.0 only supports 11 and 14, but only maybe 12 and 13
  • Needs a few lines of fixing

Closed Issues

• numba#8994 - UMAP regression with segfault on AArch64 in 0.57

2. New PRs

• numba#8992 - Add OrcJIT backend to Numba
• numba#8995 - Allow libraries that implement array_ufunc to override DUFunc.__c…
  • Feedback needed, Siu will provide
• numba#8997 - fix np_uniform_impl3 for handling size=()
• numba#9003 - 0.57.1 rel cherry pick
• llvmlite#957 - 0.40.1 rel cherry pick

Closed PRs

• merged - numba#8996 - adding a test for 8940
• merged - numba#8998 - Fix 8939 (second attempt)

3. Short-term Roadmap

gantt: https://github.com/numba/numba/issues/8971