Chapel Programming Language
@chapellanguage.bsky.social
Chapel is a programming language for productive parallel programming, for everyone and at every scale. Learn more about us on our website (https://chapel-lang.org).
Today, we are releasing Chapel 2.7, our first new version since joining @hpsf.bsky.social. Highlights include a new flag for vector libraries, improved support for debugging, and advances to the Mason package manager.
Learn more about these changes, and others, at: chapel-lang.org/blog/posts/a...
Learn more about these changes, and others, at: chapel-lang.org/blog/posts/a...
December 18, 2025 at 10:19 PM
Today, we are releasing Chapel 2.7, our first new version since joining @hpsf.bsky.social. Highlights include a new flag for vector libraries, improved support for debugging, and advances to the Mason package manager.
Learn more about these changes, and others, at: chapel-lang.org/blog/posts/a...
Learn more about these changes, and others, at: chapel-lang.org/blog/posts/a...
Reposted by Chapel Programming Language
Chapel 2.7 is now live! 💙
This release marks an important milestone for the project, as 2.7 is the first version released since Chapel joined the HPSF as an established project in November.
Check out all the highlights in our latest blog post: hpsf.io/blog/2025/ch...
This release marks an important milestone for the project, as 2.7 is the first version released since Chapel joined the HPSF as an established project in November.
Check out all the highlights in our latest blog post: hpsf.io/blog/2025/ch...
Chapel 2.7 Released – High Performance Software Foundation (HPSF)
hpsf.io
December 18, 2025 at 9:42 PM
Chapel 2.7 is now live! 💙
This release marks an important milestone for the project, as 2.7 is the first version released since Chapel joined the HPSF as an established project in November.
Check out all the highlights in our latest blog post: hpsf.io/blog/2025/ch...
This release marks an important milestone for the project, as 2.7 is the first version released since Chapel joined the HPSF as an established project in November.
Check out all the highlights in our latest blog post: hpsf.io/blog/2025/ch...
Interested in doing exploratory analytics interactively on data sets that exceed your workstation’s capacity? Learn about Arkouda, and how it compares to Pandas, Dask, and Spark, in this talk and demo given at the @uwescience.bsky.social Data Science Seminar:
www.youtube.com/watch?si=c_o...
www.youtube.com/watch?si=c_o...
UW Data Science Seminar: Brad Chamberlain
YouTube video by UW eScience Institute
www.youtube.com
December 17, 2025 at 8:52 PM
Interested in doing exploratory analytics interactively on data sets that exceed your workstation’s capacity? Learn about Arkouda, and how it compares to Pandas, Dask, and Spark, in this talk and demo given at the @uwescience.bsky.social Data Science Seminar:
www.youtube.com/watch?si=c_o...
www.youtube.com/watch?si=c_o...
Can Chapel be used to write transformers? How does the resulting performance compare against C++ or PyTorch? Check out the second and final article in Thitrin Sastarasadhit’s “Transformers from Scratch in Chapel and C++” series on the Chapel blog: chapel-lang.org/blog/posts/t...
December 15, 2025 at 9:30 PM
Can Chapel be used to write transformers? How does the resulting performance compare against C++ or PyTorch? Check out the second and final article in Thitrin Sastarasadhit’s “Transformers from Scratch in Chapel and C++” series on the Chapel blog: chapel-lang.org/blog/posts/t...
Reposted by Chapel Programming Language
"With HPSF, the #HPC community now has what I consider to be the largest and healthiest forum for developing and nurturing open source software that it ever has," says
@bradcray.bsky.social in Chapel blog: chapel-lang.org/blog/posts/1...
@bradcray.bsky.social in Chapel blog: chapel-lang.org/blog/posts/1...
December 15, 2025 at 6:13 PM
"With HPSF, the #HPC community now has what I consider to be the largest and healthiest forum for developing and nurturing open source software that it ever has," says
@bradcray.bsky.social in Chapel blog: chapel-lang.org/blog/posts/1...
@bradcray.bsky.social in Chapel blog: chapel-lang.org/blog/posts/1...
HPSFCon 2026 focuses on open-source software for HPC, to be held in Chicago IL, March 16–20.
If you have Chapel work to show off, or other topics related to HPC SW, community building, etc., submit a talk, poster, or panel discussion by January 11th at: events.linuxfoundation.org/hpsf-confere...
If you have Chapel work to show off, or other topics related to HPC SW, community building, etc., submit a talk, poster, or panel discussion by January 11th at: events.linuxfoundation.org/hpsf-confere...
Call For Proposals (CFP) | LF Events
Join us for the 2026 annual HPSF Conference, where the brightest minds in high performance software come together. Hosted by the High Performance Software Foundation (HPSF), this event is dedicated to...
events.linuxfoundation.org
December 10, 2025 at 9:34 PM
HPSFCon 2026 focuses on open-source software for HPC, to be held in Chicago IL, March 16–20.
If you have Chapel work to show off, or other topics related to HPC SW, community building, etc., submit a talk, poster, or panel discussion by January 11th at: events.linuxfoundation.org/hpsf-confere...
If you have Chapel work to show off, or other topics related to HPC SW, community building, etc., submit a talk, poster, or panel discussion by January 11th at: events.linuxfoundation.org/hpsf-confere...
Chapel is at HPE Discover Barcelona this week! Stop by the High Performance Software demo station (#227) on December 3rd and 4th to chat with Daniel Fedorin about Chapel and Arkouda.
December 3, 2025 at 7:44 PM
Chapel is at HPE Discover Barcelona this week! Stop by the High Performance Software demo station (#227) on December 3rd and 4th to chat with Daniel Fedorin about Chapel and Arkouda.
With #SC25 wrapped and the U.S. Thanksgiving break behind us, it is time to gear up for the final stretch of 2025. Make sure to recap recent Chapel events featured in the November newsletter.
chapel.discourse.group/t/chapel-new...
chapel.discourse.group/t/chapel-new...
December 2, 2025 at 12:12 AM
With #SC25 wrapped and the U.S. Thanksgiving break behind us, it is time to gear up for the final stretch of 2025. Make sure to recap recent Chapel events featured in the November newsletter.
chapel.discourse.group/t/chapel-new...
chapel.discourse.group/t/chapel-new...
For those in the Seattle area, Brad Chamberlain will be speaking at the UW Data Science Seminar tomorrow, Dec 2, introducing Arkouda—the Chapel-based framework supporting interactive data science at scale from Python.
For details, see: escience.washington.edu/events/uw-da...
uwescience.bsky.social
For details, see: escience.washington.edu/events/uw-da...
uwescience.bsky.social
December 2, 2025 at 12:11 AM
For those in the Seattle area, Brad Chamberlain will be speaking at the UW Data Science Seminar tomorrow, Dec 2, introducing Arkouda—the Chapel-based framework supporting interactive data science at scale from Python.
For details, see: escience.washington.edu/events/uw-da...
uwescience.bsky.social
For details, see: escience.washington.edu/events/uw-da...
uwescience.bsky.social
New on the Chapel blog: Read part 1 of Thitrin Sastarasadhit’s experience implementing Transformers from scratch in Chapel and C++, comparing to Python. This work was done as an undergraduate summer internship at University of Tokyo under Kenjiro Taura.
chapel-lang.org/blog/posts/t...
chapel-lang.org/blog/posts/t...
November 21, 2025 at 7:27 PM
New on the Chapel blog: Read part 1 of Thitrin Sastarasadhit’s experience implementing Transformers from scratch in Chapel and C++, comparing to Python. This work was done as an undergraduate summer internship at University of Tokyo under Kenjiro Taura.
chapel-lang.org/blog/posts/t...
chapel-lang.org/blog/posts/t...
If you’re at #SC25 and haven’t had the chance to talk to Oliver or Engin about Chapel and Arkouda yet, be sure to stop by the High Performance Software demo station at the HPE booth while the show room floor is open today or tomorrow!
November 19, 2025 at 5:48 PM
If you’re at #SC25 and haven’t had the chance to talk to Oliver or Engin about Chapel and Arkouda yet, be sure to stop by the High Performance Software demo station at the HPE booth while the show room floor is open today or tomorrow!
The French paper magazine @magazineprogrammez.bsky.social has printed an article on GPU programming in Chapel by @endofunctor.bsky.social! Grab a digital copy and check out this and other articles here:
www.programmez.com/magazine/art...
www.programmez.com/magazine/art...
November 19, 2025 at 5:40 PM
The French paper magazine @magazineprogrammez.bsky.social has printed an article on GPU programming in Chapel by @endofunctor.bsky.social! Grab a digital copy and check out this and other articles here:
www.programmez.com/magazine/art...
www.programmez.com/magazine/art...
Reposted by Chapel Programming Language
We’re so excited to share that HPSF has been recognized as the Best HPC Collaboration in the 22nd edition of the HPCwire Readers’ Choice Awards! 🏆
Thank you to everyone who voted for HPSF. We’re excited for what the future of HPC holds!
hpsf.io/blog/2025/hp...
Thank you to everyone who voted for HPSF. We’re excited for what the future of HPC holds!
hpsf.io/blog/2025/hp...
November 18, 2025 at 12:58 AM
We’re so excited to share that HPSF has been recognized as the Best HPC Collaboration in the 22nd edition of the HPCwire Readers’ Choice Awards! 🏆
Thank you to everyone who voted for HPSF. We’re excited for what the future of HPC holds!
hpsf.io/blog/2025/hp...
Thank you to everyone who voted for HPSF. We’re excited for what the future of HPC holds!
hpsf.io/blog/2025/hp...
The Chapel team at HPE is proud to announce that we are now an official @hpsf.bsky.social project! For details, please see HPSF’s announcement below:
Chapel has joined HPSF 🚀👏 Chapel is an open source language for scalable parallel computing, enabling efficient computation across desktops, clusters, & supercomputers. Through HPSF, Chapel will continue to grow as a community-governed project. Learn more: hpsf.io/blog/2025/hp...
November 17, 2025 at 5:50 PM
The Chapel team at HPE is proud to announce that we are now an official @hpsf.bsky.social project! For details, please see HPSF’s announcement below:
Chapel’s November Newsletter is out! As with last year’s edition, this one features a special section for events at #SC25. It also has news from ChapelCon ’25, talks, articles, and other community events.
chapel.discourse.group/t/chapel-new...
chapel.discourse.group/t/chapel-new...
November 17, 2025 at 4:41 PM
Chapel’s November Newsletter is out! As with last year’s edition, this one features a special section for events at #SC25. It also has news from ChapelCon ’25, talks, articles, and other community events.
chapel.discourse.group/t/chapel-new...
chapel.discourse.group/t/chapel-new...
@bradcray.bsky.social will give a talk on Chapel tomorrow (Friday, Nov 7) at @seagl.org — the Seattle GNU/Linux Conference dedicated to open-source software, hardware, and culture. To attend this free conference in person or remotely, please see:
seagl.org/attend
#SeaGL2025
seagl.org/attend
#SeaGL2025
Attend SeaGL 2025
seagl.org
November 6, 2025 at 7:47 PM
@bradcray.bsky.social will give a talk on Chapel tomorrow (Friday, Nov 7) at @seagl.org — the Seattle GNU/Linux Conference dedicated to open-source software, hardware, and culture. To attend this free conference in person or remotely, please see:
seagl.org/attend
#SeaGL2025
seagl.org/attend
#SeaGL2025
PSA: The Chapel website has been having some connectivity and security certificate issues over the past day or two. We apologize for the inconvenience and are working with our hosting company to bring it back online and stabilize it.
October 31, 2025 at 9:34 PM
PSA: The Chapel website has been having some connectivity and security certificate issues over the past day or two. We apologize for the inconvenience and are working with our hosting company to bring it back online and stabilize it.
This week’s episode of HPE’s “Technology Now” podcast focuses on Chapel, featuring a discussion between Brad Chamberlain and Michael Bird!
#HPC #OpenSource
Head to hpe.lnk.to/Chapelgu to stream it from your favorite podcast platform.
#HPC #OpenSource
Head to hpe.lnk.to/Chapelgu to stream it from your favorite podcast platform.
Why would you programme in Chapel?
What is Chapel? This week, Technology Now explores the programming language, Chapel. We ask what it I, how it was designed, and we explore why people would use it instead of some of the more establish...
hpe.lnk.to
October 30, 2025 at 5:40 PM
This week’s episode of HPE’s “Technology Now” podcast focuses on Chapel, featuring a discussion between Brad Chamberlain and Michael Bird!
#HPC #OpenSource
Head to hpe.lnk.to/Chapelgu to stream it from your favorite podcast platform.
#HPC #OpenSource
Head to hpe.lnk.to/Chapelgu to stream it from your favorite podcast platform.
In case you missed it live, Engin Kayraklioglu's talk at LUMI User Coffee Breaks is now available online. Check it out to learn more about how Chapel makes going from programming a laptop to a supercomputer easy.
#HPC #OpenSource
lumi-supercomputer.github.io/LUMI-trainin...
#HPC #OpenSource
lumi-supercomputer.github.io/LUMI-trainin...
October 20, 2025 at 6:07 PM
In case you missed it live, Engin Kayraklioglu's talk at LUMI User Coffee Breaks is now available online. Check it out to learn more about how Chapel makes going from programming a laptop to a supercomputer easy.
#HPC #OpenSource
lumi-supercomputer.github.io/LUMI-trainin...
#HPC #OpenSource
lumi-supercomputer.github.io/LUMI-trainin...
Should a good parallel language design be minimal in nature? Read @bradcray.bsky.social's take on this question in this month's edition of his "10 Myths About Scalable Parallel Programming Languages" blog series.
chapel-lang.org/blog/posts/1...
chapel-lang.org/blog/posts/1...
October 17, 2025 at 7:35 PM
Should a good parallel language design be minimal in nature? Read @bradcray.bsky.social's take on this question in this month's edition of his "10 Myths About Scalable Parallel Programming Languages" blog series.
chapel-lang.org/blog/posts/1...
chapel-lang.org/blog/posts/1...
Have an idea for the new Chapel logo? Make sure to read github.com/chapel-lang/... and submit your proposal by October 21st!
Chapel Logo Design · Issue #27901 · chapel-lang/chapel
Hello Chapel community! We are entering a new chapter in the language's history and joining HPSF! As we migrate to HPSF, we will be getting a new logo to represent the project. The Chapel Technical...
github.com
October 16, 2025 at 7:39 PM
Have an idea for the new Chapel logo? Make sure to read github.com/chapel-lang/... and submit your proposal by October 21st!
Upcoming talk alert: Join Engin Kayraklioglu during the LUMI User Coffee Break on Oct. 15th 9AM ET. He will cover several applications of Chapel and how its language features allow its users to go from laptops to supercomputers with ease.
More info & link: www.lumi-supercomputer.eu/events/userc...
More info & link: www.lumi-supercomputer.eu/events/userc...
October 14, 2025 at 6:07 PM
Upcoming talk alert: Join Engin Kayraklioglu during the LUMI User Coffee Break on Oct. 15th 9AM ET. He will cover several applications of Chapel and how its language features allow its users to go from laptops to supercomputers with ease.
More info & link: www.lumi-supercomputer.eu/events/userc...
More info & link: www.lumi-supercomputer.eu/events/userc...
And that's a wrap on ChapelCon '25! Huge thanks to all the presenters for their hard work and the participants for their engagement. You can catch replays of the tutorials and presentations soon! Until next year 👋
October 13, 2025 at 7:09 PM
And that's a wrap on ChapelCon '25! Huge thanks to all the presenters for their hard work and the participants for their engagement. You can catch replays of the tutorials and presentations soon! Until next year 👋
ChapelCon ’25 Conference Days start today! Join us for four sessions on Chapel applications and algorithms, and a keynote address from Chris Rackauckas of MIT's JuliaLab. The conference begins at 9AM PT.
Register for free here: hpe.zoom.us/j/91206107280
Register for free here: hpe.zoom.us/j/91206107280
October 9, 2025 at 4:33 PM
ChapelCon ’25 Conference Days start today! Join us for four sessions on Chapel applications and algorithms, and a keynote address from Chris Rackauckas of MIT's JuliaLab. The conference begins at 9AM PT.
Register for free here: hpe.zoom.us/j/91206107280
Register for free here: hpe.zoom.us/j/91206107280
✅ ChapelCon '25 Day 1 is complete! ✅ Thank you to our presenters and participants. See you tomorrow for tutorials and demos on some of Chapel's advanced features.
Register here: chapel-lang.org/chapelcon25/
Register here: chapel-lang.org/chapelcon25/
October 7, 2025 at 11:00 PM
✅ ChapelCon '25 Day 1 is complete! ✅ Thank you to our presenters and participants. See you tomorrow for tutorials and demos on some of Chapel's advanced features.
Register here: chapel-lang.org/chapelcon25/
Register here: chapel-lang.org/chapelcon25/