Minutes_2023_05_30
esc edited this page May 30, 2023
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Attendees: val, siu, Andre, Brandon Willard, Graham Markall, Ianna Osborne, Ivan Butygin, Jim Pivarski, Luk, stuart, Todd A. Anderson, Kaustubh, collison, Matthew Murray FPOC (last week): Kaustubh FPOC (incoming): Val
NOTE: All communication is subject to the Numba Code of Conduct.
Please refer to this calendar for the next meeting date.
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(discussed in triage) NumPy 1.25 milestone has it scheduled for 1st July https://github.com/numpy/numpy/milestone/113 so an RC will likely be out soon.
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Updates from numba-family projects: RVSDG, PIXIE, and an update on the AOT MVP.
- RVSDG:
- Siu's path finding on full RVSDG form
- Work in progress on lowering simple programs
- Look out for a presnetation in the near future
- Kaust's refactoring to simpler datastructures
- Siu's path finding on full RVSDG form
- PIXIE
- Scope has been reduced slightly
- AOT prototype
- Implemented a prototype as per the document on Discourse and AOT use-case
- Simple c-compilation into PIXIE libraries/modules
- New AOT pipeline for Numba code to PIXIE module
- Ways to combine these two modules in various ways
- Few hacks still in place to get a quicker solution
- You can import a PIXIE library, expose all functions in this library and make them availble for both JIT and AOT compilation.
- Hope to stabilize this stuff and resolve call conventions type stuff
- First version of PIXIE coming soon, will need feedback about how folks want to use this tool, inputs, outputs and what consumers would expect.
- RVSDG:
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update on 0.57.1/0.40.1
- Numba milestone three issues, one needs a real fix, one is ready and one needs a flake8 fix and some tests
- llvmlite milestone: two issues left, one is RTM and one has been reviewed by OP
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(discussed in triage) gpuCI follow up
- No problems with installing the apps / following the process
- Graham to contact Andre regarding app installation to start the process of setting up new CI
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(discussed in triage) 2 months to 0.58. Some large items that need doing include
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- objmode fallback removal (and clean up).
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- cache invalidation PR
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- NumPy 1.25 (large because of testing etc).
- There's also a few smaller things on the milestone, suggest not adding anything else for now.
- Val will drive this (together with Kaust?)
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(discussed in triage) Given there was no one in favour of keeping support for windows 32 bit at last week's meeting and https://github.com/numba/numba/issues/8758 asks whether anyone depends on it, to which there have been no responses. Can it be concluded that windows 32bit support will be dropped for 0.58?
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Numba-MLIR presentation by Ivan Butygin next week. Announcement: https://numba.discourse.group/t/numba-meeting-june-6-2023-presentation-on-numba-mlir/1959
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numba#8981 - Ahead Of Time default parameters and default keyword arguments- method doesn't work as expected
- pycc does support default arguments?
- Answer is: no we don't
- Siu suggests to do nothing on this issue, since the AOT pipeline needs a rewrite and this will be solved with that
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numba#8986 - BUG: Windows11 VSCode Numba llvmlite OSError
- Point user to other issues: missing runtime?
- What is the real error? Doesn't llvmlite provide more info?
- Hard to debug and diagnose remotely without a reproducer
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numba#8989 - Spurious deep copies in inlining
- Why is so much stuff being inlined that this is causing an issue
- This was mentiond on gitter too
- PR opened at: https://github.com/numba/numba/pull/8990 -- this removes some of the deepcopy that may not ne necessary
- Check this some more with
git blameand history - Run through build farm
- Check back with OP
- If everything checks out, the PR should be merged.
- numba#8977 - NameError from CubinLinker with CUDA_ENABLE_MINOR_VERSION_COMPATIBILITY
- numba#8985 - Call to cuInit results in UNKNOWN_CUDA_ERROR
- *** numba#8982 - Don't do the parfor diagnostics pass for the parfor gufunc.
- Waiting on Todd to do some flake8 fixes.
- Needs a test: use
run_test_in_subprocess-- this is the ideal thing to use since one needs to test that the env var has been set.
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numba#8983 - Fix typo in deprecation.rst
- Short typo fix, been reviewed and is now read to merge
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numba#8984 - Support @gufunc inside @jit
- Still in progress
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numba#8987 - Add support of exception in CUDA kernels
- Still in progress
- numba#8988 - support for latest CUDA driver codes #8363
- numba#8990 - [Do Not Merge] Removed extra block copying in InlineWorker
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numba#8991 - Cherry-pick and squash PR #8978 (Import MVC packages when using MVCLinker) for Release 0.57.1
- Backport for 0.57.1
- *** llvmlite#953 - Add operand bundle tag support and file system support.
- Has come from work on PyOpenMP
- Questions for Todd:
- What does the filesytstem have to do with this?
- PyOpenMP does rely on a global structure for modules
- Filling in those datastructures on the Numba side for llvmlite
- A few fields need results of filesystem calls
- Current approach: LLVM pass that does target processing
- So we don't need to create the structres with llvmlite anymore
- This could potentially be useful to other people
- It's not structly necessary, but also not getting in the way
- Tests and documentation will be needed ?
- What level of dcoumentation, where should this go?
- Documentation is straight forward, just documents that APIs exist and what they do
- RST file somewhere
- What would tests look like?
- For the bundle, we just need some simple assembly parsing, to ensure valid LLVM IR is being generated
- For the filesystem stuff, perhaps just exercise it, we can maybe just check if it works and returns something useful
- What does the filesytstem have to do with this?
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llvmlite#954 - Invalidate string cache for mutable instructions
- Graham may comment some more on this
- merged - numba#8976 - Fix index URL for ptxcompiler/cubinlinker packages.
- merged - numba#8978 - Import MVC packages when using MVCLinker.
- merged - numba#8979 - Cherry-pick #8976 (fix index URL for ptxcompiler/cubinlinker packages) for Release 0.57.1
- numba#8980 - [CI only] Use nightly build of cubinlinker