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Brad Chamberlain @bradcray.bsky.social · 1d

Tomorrow is the fourth and final day of ChapelCon '25! Join us for this free, online virtual event to catch my annual "State of the Project" talk, an invited talk by Todd Gamblin (@tgamblin.bsky.social), and much, much more.

Register and browse the agenda at: chapel-lang.org/chapelcon25/

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Brad Chamberlain @bradcray.bsky.social · Sep 10

The phrase "Summer of Programming Languages" is one that's music to my ears. Thanks to HiRSE for sponsoring this video series and for including Chapel as part of it!

Chapel Programming Language @chapellanguage.bsky.social · Sep 10

Want an intro to the Chapel programming language and why you might choose it over other languages? Check out the latest video in the HiRSE "Summer of Programming Languages" series, also featuring Rust, Julia, Python, C++, Fortran, and R:

www.youtube.com/watch?v=Au6d...

Chapel - HiRSE Summer of Programming Languages

YouTube video by HiRSE

www.youtube.com

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Brad Chamberlain @bradcray.bsky.social · Aug 27

It's been a busy quarter for Chapel, and you can read all about it in our latest newsletter which came out this week!

Brad Chamberlain @bradcray.bsky.social · Aug 1

I'm really happy about this new installment of our interview series with Chapel users, but more than that, I'm proud of the great accomplishments that users like Tiago and Guillaume are achieving with our language!

Chapel Programming Language @chapellanguage.bsky.social · Jul 31

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...

Brad Chamberlain @bradcray.bsky.social · Jul 22

Congratulations to the Spack team on reaching this significant milestone!

Spack @spackpm.bsky.social · Jul 20

💥Spack v1.0 is out!💥

This is a huge milestone. We reworked the core to add compiler dependencies, and we're introducing a stable package API.

🚀1.0 also adds concurrent builds, better includes, and much more -- read it all in the release notes!

github.com/spack/spack/...

github.com

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Brad Chamberlain @bradcray.bsky.social · Jul 17

Are GitHub stars something of a silly metric?
In my opinion, "yes."

Would I like you to star our project anyway?
Also "yes". :)

Chapel Programming Language @chapellanguage.bsky.social · Jul 17

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/...

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Brad Chamberlain @bradcray.bsky.social · Jun 17

Engin's a great speaker, so you won't want to miss his virtual talk for Los Alamos tomorrow, particularly if you are interested in parallel programming of CPUs, GPUs, and/or supercomputers!

Chapel Programming Language @chapellanguage.bsky.social · Jun 17

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...

Reposted by Brad Chamberlain

mppf.bsky.social @mppf.bsky.social · Jun 13

I made the new scalable sort routine for the Chapel standard library! Now it's possible to easily sort a distributed array just by calling the standard library 'sort'. Outperforms the best distributed Chapel sort to date, and it performs competitively with the KaDiS AMS sort written in MPI.

#HPC

Chapel Programming Language @chapellanguage.bsky.social · Jun 12

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...

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Brad Chamberlain @bradcray.bsky.social · Jun 6

On top of hundreds of other formulas, this release of E4S adds Chapel's GPU support to the mix. Thanks to the E4S project for this addition!

High Performance Software Foundation (HPSF) @hpsf.bsky.social · Jun 6

E4S 25.06 is here! ✨

Now supporting NVIDIA Blackwell GPUs and CUDA 12.8, this release brings over 950 binaries and 130+ HPC and AI packages. E4S is your go-to for scalable, open-source HPC-AI software.

🔗 Details: insidehpc.com/2025/06/e4s-...

E4S Release 25.06 for AI and HPC Available from High Performance Software… | High Performance Software Foundation (HPSF)

E4S 25.06 is here! ✨ Now supporting NVIDIA Blackwell GPUs and CUDA 12.8, this release brings over 950 binaries and 130+ HPC and AI packages. E4S is your go-to for scalable, open-source HPC-AI softwa...

www.linkedin.com

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Brad Chamberlain @bradcray.bsky.social · May 29

The second article in my archival "10 myths about scalable parallel programming languages (redux)" blog series, with current commentary, 13 years later, is now available.

Trigger warnings: multiple mentions of HPF

#HPC

Chapel Programming Language @chapellanguage.bsky.social · May 29

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

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Brad Chamberlain @bradcray.bsky.social · May 27

We're now one week out from IPDPS and this keynote!

Chapel Programming Language @chapellanguage.bsky.social · May 9

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

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Brad Chamberlain @bradcray.bsky.social · May 21

It's been a very busy quarter for the Chapel community, and Engin has done a great job of capturing the highlights in our latest newsletter. Read on to see what we've been up to!

Chapel Programming Language @chapellanguage.bsky.social · May 21

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...

Brad Chamberlain @bradcray.bsky.social · May 13

Look carefully and you can see @mppf.bsky.social and Shreyas Khandekar sporting their Chapel Programming Language keychains. :)

High Performance Software Foundation (HPSF) @hpsf.bsky.social · May 12

We had a great time at HPSF Conference last week 💥
What were your highlights? #HPSFCon

Brad Chamberlain @bradcray.bsky.social · May 12

I'm excited to have the opportunity to give this virtual talk hosted by KAUST tomorrow morning. If you're interested in learning a bit about Chapel, please feel encouraged to register and attend!

Chapel Programming Language @chapellanguage.bsky.social · May 12

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...

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

Registration Form

docs.google.com

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Brad Chamberlain @bradcray.bsky.social · May 9

I'm excited to be giving this keynote at HIPS / IPDPS 2025, using the workshop's 30th anniversary as an opportunity to reflect on the past 30 years of #HPC programming language design and adoption. Hope to see many of you there!

Chapel Programming Language @chapellanguage.bsky.social · May 9

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

Brad Chamberlain @bradcray.bsky.social · May 5

For those at #CUG2025 this week, be sure to catch @michelle-strout.bsky.social's talk tomorrow about our team's collaboration with @cworthy.bsky.social in support of climate research.

Chapel Programming Language @chapellanguage.bsky.social · May 5

At #CUG2025 on Tuesday May 6, see how @cworthy.bsky.social is experimenting with distributed parallel simulation of ocean-based carbon dioxide removal w/ Chapel and trusted Fortran libraries.

ssl.linklings.net/conferences/...

Read more about Chapel-Fortran interop: chapel-lang.org/blog/posts/f...

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Brad Chamberlain @bradcray.bsky.social · May 5

Though I wasn't able to attend, I'm very excited for HPSFCon to be happening in Chicago this week. Michael and Shreyas will be representing our project on-site, so seek them out to talk Chapel, HPC programming, and open-source. They'll also be presenting a short project overview tomorrow (Monday).

High Performance Software Foundation (HPSF) @hpsf.bsky.social · May 2

We're looking forward to HPSFCon next week with more than 130 speakers on the most pressing high performance software topics 🔥 Featured panels include:
👥 Status and Trends in the HPC Landscape
👥 Processor Trends and What They Mean for Software
Join us in Chicago to be part of the conversation!

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Brad Chamberlain @bradcray.bsky.social · May 1

In June, I will be giving a talk at HIPS 2025 reflecting on the past 30 years of programming languages in #HPC.

I have an outline and my own opinions as to why new languages have not been adopted, but want to hear yours as well: Why would you say the HPC community has not adopted new languages?

Brad Chamberlain @bradcray.bsky.social · Apr 30

I was really proud of this "[10] Myths of Scalable Parallel Programming Languages" series when I wrote it for IEEE TCSC in 2012. I'm somewhat terrified to go back and re-read my writing now, but in honor of its 13th anniversary, we're doing just that, re-publishing and reflecting on the series.

Chapel Programming Language @chapellanguage.bsky.social · Apr 30

In 2012, @bradcray.bsky.social put a stake in the ground for Chapel, publishing the series “Myths of Scalable Parallel Programming Languages” on the IEEE TCSC blog. Today, we are republishing and revisiting the series on the Chapel blog. See how it holds up!

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

#HPC

A screenshot of the blog post "10 myths about scalable parallel programming languages (Redux), Part 1: Productivity and Performance"

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Brad Chamberlain @bradcray.bsky.social · Apr 10

Given the recent focus on software safety, I really enjoyed this article by @mppf.bsky.social exploring how Chapel, despite not being as safety-driven as Rust, comes quite close for the errors he studied, while also arguably having a better story in terms of programmability and #HPC parallelism.

Chapel Programming Language @chapellanguage.bsky.social · Apr 10

Check out Michael Ferguson's new article in the Chapel Blog to learn about how Chapel's design gives it good memory safety properties. The article shows how C, C++, Rust, Python, OpenSHMEM, MPI, and Chapel respond to common programming errors.

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

#ChapelLang

A table of possible memory errors, with columns for C, C++, Rust, Python, and Chapel.

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Brad Chamberlain @bradcray.bsky.social · Apr 2

On one hand, the support we've just added for multidimensional array literals in Chapel is not a big deal compared to its core features for distributed scalable parallelism. On the other hand, it's a feature that users have understandably requested for years, so it's great to have landed it in 2.4!

Chapel Programming Language @chapellanguage.bsky.social · Apr 2

Chapel's first community-designed language feature has been released! Check out the latest Chapel blog to learn more about multidimensional array literals in Chapel 2.4 and how its design was shaped by community input.

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

#HPC #OpenSource

A screenshot of a two-dimensional array literal stored into a Chapel variable `Arr3by3`.

Brad Chamberlain @bradcray.bsky.social · Apr 1

Continues to be excited by the community-building activities HPSF is undertaking to advance HPC software!

High Performance Software Foundation (HPSF) @hpsf.bsky.social · Apr 1

Check out our new HPSF-Community YouTube channel 🎬
🚀 Read the blog: hpsf.io/blog/2025/hp...
▶️ Subscribe: www.youtube.com/@HPSF-commun...

Brad Chamberlain @bradcray.bsky.social · Mar 20

I'm particularly proud of this release. Not because it contains crazy new massively groundbreaking changes, but instead the opposite: Because it feels like the highlights shore up the technology and fill in gaps that users have asked us to focus on.

(That said, the Python interop is very cool!)

Chapel Programming Language @chapellanguage.bsky.social · Mar 20

Chapel 2.4 is now available! This release brings powerful new features, including multi-dimensional array literals, [significantly improved] Python interoperability, and CMake support. Learn more in its release announcement:

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

#HPC #OpenSource

A screenshot of the "Announcing Chapel 2.4" blog post linked in this post.

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Brad Chamberlain @bradcray.bsky.social · Mar 20

Nice to see LBNL increasing their participation in HPSF!

High Performance Software Foundation (HPSF) @hpsf.bsky.social · Mar 20

Welcome to the High Performance Software Foundation, Berkeley Lab‬ @berkeleylab.lbl.gov 👋
🙌 Great to have you as an institutional member of HPSF! 🎉

Berkeley Lab Computing Sciences @cs.lbl.gov · Mar 13

🌟Exciting News!🌟 @berkeleylab.lbl.gov is now an institutional member of the High Performance Software Foundation! This membership advances high-performance #software stacks across industry, academia, and government, meeting the demand for portable and scalable solutions in #HPC + #AI bit.ly/HPSFlbnl

Brad Chamberlain @bradcray.bsky.social · Mar 14

What must I do to make you remove that little green dot, Element? I've scrolled through all 41 replies in the thread… I've clicked on most of them… What... Must... I... DO?!?