# \[ANN\] Numba 0.62.0rc1 / llvmlite 0.45.0rc1

**URL:** <https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048>\
**Category:** Announcements\
**Created:** [August 28, 2025, 7:22pm UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048 "2025-08-28T19:22:01Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![esc](https://yyz2.discourse-cdn.com/free1/user_avatar/numba.discourse.group/esc/32/49_2.png) [@esc](https://numba.discourse.group/u/esc)\
**Post date:** [August 28, 2025, 7:22pm UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048/1 "2025-08-28T19:22:01Z")

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Dear all,

I am exhilarated to announce the availability of fresh release candidates for both  
Numba and llvmlite. Please see the release notes for highlights of the release.

Please note the special installation instructions for Linux wheels (linux-64 and linux-aarch64), this was caused by a last-minute build failure and we could only make them available on [anaconda.org](http://anaconda.org) and not [PyPi.org](http://PyPi.org). We will ensure to have wheels on PyPi for the final release for those platforms though, no danger.

- Numba 0.62.0rc1

As usual, `llvmlite` is a dependency of `Numba`, so if you installed `Numba` as above you do not also need to install `llvmlite`.

- llvmlite 0.45.0rc1

Please do test the release with any software you maintain that depends on Numba  
and drop your results in the thread below or open a ticket on the tracker.

A big thank you to all of our contributors – listed on the release notes of  
each project – it’s always lovely to see so many people come together to shape  
a piece of software! Thank you so much!

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**Author:** ![esc](https://yyz2.discourse-cdn.com/free1/user_avatar/numba.discourse.group/esc/32/49_2.png) [@esc](https://numba.discourse.group/u/esc)\
**Post date:** [August 28, 2025, 7:25pm UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048/2 "2025-08-28T19:25:22Z")

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Ping our esteemed [@RC\_Testers](https://numba.discourse.group/groups/rc_testers) – 👆

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**Author:** ![seanlaw](https://yyz2.discourse-cdn.com/free1/user_avatar/numba.discourse.group/seanlaw/32/506_2.png) [@seanlaw](https://numba.discourse.group/u/seanlaw)\
**Post date:** [August 29, 2025, 3:27am UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048/3 "2025-08-29T03:27:55Z")

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All tests are passing for STUMPY: [check\_numba\_release\_candidate · stumpy-dev/automate@674d04a · GitHub](https://github.com/stumpy-dev/automate/actions/runs/17296597100/job/49151317390)

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**Author:** ![yangeorget](https://yyz2.discourse-cdn.com/free1/user_avatar/numba.discourse.group/yangeorget/32/1127_2.png) [@yangeorget](https://numba.discourse.group/u/yangeorget)\
**Post date:** [September 2, 2025, 6:29am UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048/4 "2025-09-02T06:29:40Z")

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All tests are passing for NuCS. No performance improvement … Is it expected ?

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**Author:** ![esc](https://yyz2.discourse-cdn.com/free1/user_avatar/numba.discourse.group/esc/32/49_2.png) [@esc](https://numba.discourse.group/u/esc)\
**Post date:** [September 2, 2025, 9:08am UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048/5 "2025-09-02T09:08:02Z")

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> [@yangeorget](#):
>
> All tests are passing for NuCS. No performance improvement … Is it expected ?

In general there was an expectation of LLVM 20 potentially bringing in performance improvements. But this was always a “maybe, but we need to see what really happens”. Looks like there was no performance improvement for your use-case, perhaps?

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**Author:** ![milton](https://avatars.discourse-cdn.com/v4/letter/m/87869e/32.png) [@milton](https://numba.discourse.group/u/milton)\
**Post date:** [September 4, 2025, 10:53am UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048/6 "2025-09-04T10:53:01Z")

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All tests pass for [numbox](https://github.com/Goykhman/numbox).

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**Author:** ![esc](https://yyz2.discourse-cdn.com/free1/user_avatar/numba.discourse.group/esc/32/49_2.png) [@esc](https://numba.discourse.group/u/esc)\
**Post date:** [September 4, 2025, 4:19pm UTC](https://numba.discourse.group/t/ann-numba-0-62-0rc1-llvmlite-0-45-0rc1/3048/7 "2025-09-04T16:19:21Z")

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@seanlaw @yangeorget @milton – thank you so much for testing out the RC! Your involvement and feedback is much appreciated. Thank you for using Numba!
