Chapel Programming Language

There's still time: ChapelCon '25 submissions close tomorrow! Submit your talk, demo, poster, or extended abstract here:

easychair.org/my/conferenc...

ChapelCon '25 is the premier Chapel event of the year. Share your experience working with Chapel, or Chapel applications like Arkouda, this October. We are accepting submissions for talks, demos, posters, and extended abstracts until Friday, August 8th Submit today! chapel-lang.org/chapelcon25/

Are you an educator teaching Chapel in the classroom? A developer using Chapel to build new software? Share your experiences with the community at ChapelCon '25! Submit today: chapel-lang.org/chapelcon25/

Read about how Chapel supports massive combinatorial optimization problems in the latest installment of our “7 Questions for Chapel Users” series where we talk to Tiago Carneiro and Guillaume Helbecque about their work with ChOp.

Check it out at: chapel-lang.org/blog/posts/7...

ChapelCon '25 submissions close next week! (August 8)

If you've got an idea you're considering submitting, but haven't had time to flesh it out, join us tomorrow at the "Night (or Day) of Unfinished Proposals" to wrap things up!

July 31, at 10am Pacific: tinyurl.com/chapelcon25n...

Using Chapel for a passion project? Share your progress with the community at ChapelCon '25. Submissions are due Friday, August 8th. Learn more here: chapel-lang.org/chapelcon25

This week, we published the fourth article in our “10 Myths About Scalable Parallel Programming Languages” series. This month’s post wrestles with the question “Does a language’s syntax matter?”

What do you think? Read on for Brad Chamberlain’s take: chapel-lang.org/blog/posts/1...

The ChapelCon submission deadline is closer than it appears! Start working on your proposal with the community at the Night (or Day) of Unfinished Proposals. Join us next Thursday, July 31st, at 10am Pacific: tinyurl.com/chapelcon25n...

Lucky day! The deadline for ChapelCon '25 submissions has been extended to Friday, August 8th. Submit your talk/demo proposal, poster, or extended abstract here: chapel-lang.org/chapelcon25/

We recently received our 1,900th star on GitHub! Thanks to all who’ve shown their support for the Chapel programming language in this way and for helping to grow awareness of our open-source community.

Haven’t starred us yet? Help us reach 2k at: github.com/chapel-lang/...

Attending JuliaCon 2025 next week? Join us at the “Chapel ❤️ Julia” BoF on July 24 at 2:30.

In this BoF, learn about Chapel from a developer and why it may be of interest to Julia users; and discuss how these two communities can benefit one another.

pretalx.com/juliacon-202...

Join conversation

Questions about ChapelCon '25? Join our weekly community meeting for an AMA session! Tuesday, June 15th, 10am Pacific:

Working on a project that uses Chapel? We want to hear about it! Submit a talk, demo, poster, or extended abstract about your project to ChapelCon '25, the Chapel Event of the Year. chapel-lang.org/chapelcon25

#HPC #OpenSource

ChapelCon '25 is open for submissions! Working on something cool with Chapel? We are accepting contributions in a variety of formats: presentations, demos, posters, or extended abstracts. Submit today: easychair.org/conferences/...

In this month's edition of "10 Myths of Scalable Parallel Programming Languages", Brad focuses on the question of the adoptability of new parallel languages and the extent to which extending an existing language might help vs. not.

Find it at: chapel-lang.org/blog/posts/1...
#ChapelLang #OpenSource

Looking to share your work using Chapel? Look no further. The ChapelCon '25 Call for Papers is live! Submissions open June 27th and close July 25th. We're excited to see what you've been working on! www.wikicfp.com/cfp/servlet/...

#ChapelLang #OpenSource

This month's 2.5 release introduced Chapel editions, inspired by Rust. This allows the language to continue to evolve by introducing breaking changes, without requiring users to update their code for such changes immediately.

For details, see: chapel-lang.org/blog/posts/a...

HPE Discover is this week! If you are attending and interested in learning more about Chapel and Arkouda, visit our demo station in the Showcase!

Chapel 2.5 adds a fast new distributed sort implementation to the standard library! It out-scales other distributed Chapel sorts. To use it, pass a Block-distributed array to the standard sort() procedure.

See the Chapel 2.5 release notes for more information:

chapel-lang.org/blog/posts/a...

Can one programming language be used to program multicore processors, GPU-packed supercomputers, and everything in between? Chapel can! Engin Kayraklioglu will give a public talk about Chapel's portability at Los Alamos National Laboratory on June 18th, 10AM PT!

teams.microsoft.com/l/meetup-joi...

Chapel 2.5 is being released today! Highlights include a new scalable sort routine, an editions feature for experimental breaking changes, a new aliasing reshape() for arrays, initial support for VSCode debugging, dynamically loaded libraries, and more!

chapel-lang.org/blog/posts/a...

It’s been a while since our last live demo on GPU programming with Chapel—join us Thursday, June 12th for a fresh look! We will discuss how Chapel’s first-class parallelism and locality support makes it a breeze to program multi-GPU, multilocale systems!

#HPC

teams.microsoft.com/l/meetup-joi...

Chapel developers @endofunctor.bsky.social and Jade will be at the HPE booth at #ISC25 in Hamburg, Germany, June 8th-12th. Stop by to learn about Arkouda, a framework for interactive, large-scale data analysis, and about how the Chapel language makes it possible!

isc-hpc.com

Did you know that you can use an LLM system to generate a working, parallel Chapel program? Learn about how Chapel can be used with various LLM-enabled tools to accelerate development in the demo on Thursday, June 5th at 10am PT. We hope to see you there!

teams.microsoft.com/l/meetup-joi...

In this month’s edition of “10 Myths About Scalable Parallel Programming Languages (redux)“, @bradcray.bsky.social takes on the myth that new parallel programming languages can’t succeed because so many previous ones have failed.

chapel-lang.org/blog/posts/1...

#HPC #OpenSource

Next Tuesday at the 30th HIPS workshop at #IPDPS , @bradcray.bsky.social will be presenting the keynote, entitled “Reflections on 30 years of HPC programming: So many hardware advances, so little adoption of new languages.” Hope to see you there!

hips2025.github.io#keynote

#HPC #OpenSource

Chapel’s May newsletter is out now! Check it out for news about many recent and upcoming talks, new public project meetings, as well as Chapel events at JuliaCon, ISC, and HPE Discover!

chapel.discourse.group/t/chapel-new...

Chapel’s new compiler front-end rework, which has brought new language tooling and better error messages, has seen much progress recently. Learn more about this effort, including its goals and design, in the demo session on Thursday, May 22nd at 10am PT! 🚀

teams.microsoft.com/l/meetup-joi...

Chapel by Brad Chamberlain (HPE) Tue. May 13th at 4pm KSA, 9am ET; 3pm Europe Registration Form

Interested in learning more about Chapel? Check out this talk on May 13th, 9am ET/4pm KSA hosted by KAUST. @bradcray.bsky.social will give the talk “Chapel: Accessible Parallel Programming from the Desktop to the Supercomputer”. To attend virtually, register at:

docs.google.com/forms/d/e/1F...

On June 3rd at the 30th HIPS workshop at IPDPS, @bradcray.bsky.social will be presenting the keynote, entitled "Reflections on 30 years of HPC programming: So many hardware advances, so little adoption of new languages." If you're there, be sure to catch it!

hips2025.github.io#keynote