Chapel project meeting: 2025-09-16 (agenda items, meeting link, notes)

[github-actions[bot]]

This discussion is for the weekly Chapel project meeting.

Date/Time: 2025-09-16 at 10am PT
Join the meeting using this Teams link

---

Prior to the meeting, propose any agenda items using comments below. After the meeting, rough notes will be added in comments.

Typically, these meetings consist of:

• News: Quick updates or announcements to keep people in the loop on key efforts or topics
• Demos: Have something cool to show off? Do it in a ~5-minute demo
• Short Topics: Have something that needs a quick discussion, description, or straw poll? Propose a ~5-minute discussion topic
• Longer Topics: If you have a topic needing more time, propose it with an estimated duration and we'll try to fit it in.

If you'd like to propose an item in any of these categories, please reply to this discussion.

In addition to the above sections, we have some standing agenda items, such as:

• Triage: What is the state of testing and are there issues that need more attention?
• User Issues: What new user issues have come up in the past week, and which should we prioritize?
• Q&A: Have something you want to ask, but not on the clock? We'll open the floor to Q&A as the official meeting wraps up.

[pawaka2025]

I would like to ask if Chapel currently supports a particular method of memoization for enabling speculative executions. I can introduce this question with a short discussion during the meeting.

[lydia-duncan]

Here's today's user issues report slide:

[bradcray]

Agenda / Notes

News/Announcements

• 2.6 release timeline:

  • 'main' is currently frozen
  • draft release announcement material due today/tomorrow
  • release should come out this Thursday

• Arkouda/Chapel lightning talk accepted to SLAC data analytics workshop

  • https://lssda.github.io/

• Published next interview in our "7 Questions with Chapel Users" series Monday

  • with Marjan Asgari, Natural Resources, Government of Canada
    • formerly U Guelph, where she used Chapel in her PhD work
  • https://chapel-lang.org/blog/posts/7qs-asgari/

• Upcoming Deep-dives

  • Sept 18: Second TSC meeting (topics: project naming timing, logo, chair)
    • Discussion topics for Sept 18 TSC meeting TSC#3
  • Sept 25: Shubh Singhal (Ga Tech) will present Bale IG results on Frontier
    • interested in feedback on their work
    • Chapel Deep Dive & Demo meeting: topic list #27247 (comment)

Triage Status

• Engin: end-of-rotation update (Brad up next)
  • test-release-tarball failing again sporadically (unowned)
  • EX testing still getting back online after sys changes (Engin, Jade, Anna)
  • Arkouda RNG changes failing in gasnet+asan (Engin)
  • lingering chplcheck failures (Jade)
  • long-term CHAMPS failures (Engin will ping CHAMPS team again)
  • Arkouda sort cases still sporadically noisy (Engin)

User Issues

• Lydia: weekly report
  • 1 new user issue w.r.t. rotl of sizes >= # bits in type being rotated
    • Jade has a PR that adds a warning / resolves the issue

Demos

Discussion Topics

• Rinor Ramli: question about memoization for speculative executions
  • short Q: Does Chapel support memoization automatically?
  • short A: Not automatically / built-in; would need to build from scratch
  • Engin: Creating a general API for memoization in Chapel, potentially
    making use of function pointers, could be of interest to the community.

Post-meeting

Office Hours / Q&A

• Discussed a bit with Rinor the challenge of presenting complex topics
  in short talk slots, like ChapelCon

TODOs / Open Issues