Spack

Un bon argument pour @spackpm.bsky.social !

Release v1.1.1 · spack/spack v1.1.1 (2026-01-14) Usability and performance enhancements solver: do a precheck for non-existing and deprecated versions #51555 improvements to solver performance (PRs #51591, #51605, #51612, #51...

Spack v1.1.1 is out!

This is a patch release with some notable improvements:
* Python 3.14 support
* Better error messages for missing/deprecated versions
* Major performance improvements for the solver

Read it all in the release notes! #hpc #spack

github.com/spack/spack/...

There’s an example of how to set up a binary cache here:
- spack-tutorial.readthedocs.io/en/latest/tu...

And an action to use buildcaches in CI here:
- github.com/spack/setup-...

New blog post: Using Spack on top of EESSI: A Proof of Concept

Can we convince Spack to reuse software installations available in EESSI to resolve required dependencies when installing QuantumESPRESSO?

www.eessi.io/docs/blog/20...

@spackpm.bsky.social

"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...

PSA, if you’re looking to do something like this, I highly recommend using @spackpm.bsky.social to manage your build environment. You can build NCEP’s GRIB2, BUFR, and “ip” libraries, along with other dependencies like Proj. Would be much harder without it.

So proud to be recognized as the Readers' Choice for Best HPC Collaboration in HPCwire!

Thank you once again to everyone who voted, and everyone who visited us at SC this week! 💚 💙 ❤️

Release v1.1.0 (2025-11-14) · spack/spack v1.1.0 features major improvements to compiler handling and configuration management, a significant refactoring of externals, and exciting new experimental features like a console UI for parallel i...

Spack v1.1.0 and spack-packages v2025.11.0 are out!

🥳Features:
🏗️ Compiler control (unmixing, %%)
📦 Improved externals
⬇️ Git fetching
😌 Configurable config

👩🏻‍🔬Experimental:
👩🏻‍💻 New parallel console UI
🏎️ Concretization caching

More here!
github.com/spack/spack/...

seconding spack slack -- join at slack.spack.io

You should also be able to run `spack diff /hash1 /hash2` to see

you could also try running `spack solve` (debug thing) instead of `spack spec`, both without forcing the option and with. It'll show you the optimization criteria.

Run `spack spec --json /hash` to see what's in the hash.

`spack bulidcache list -l` will give you hashes.

If you try to build and require the thing you think you want by hash (^/abc123), Spack should tell you why it doesn't work.

Join us in Chicago in March, when we'll hold the second in-person Spack User Meeting in conjunction with HPSFCon 2026!

Stay tuned for details! #hpc #hpsf #spack

Great news! The date & location is locked in for #HPSFCon 2026. Save the date:
➡️ HPSF Conference
📅 March 16-20, 2026
📍 Chicago, IL
The 2nd annual HPSFCon will again bring together the brightest minds in high performance software. Stay tuned for CFP & registration details later this month.

Missed our 4 day tutorial at ICPP? We've outlined the highlights in our latest blog ✏️ ✨

Read more about our work with Spack, Kokkos, and Trilinos: hpsf.io/blog/2025/hp...

The morning session also included an overview of @spackpm.bsky.social presented by #LLNL's Caetano Melone #HPC #CARLA2025

🏆 HPSF is nominated for best HPC collaboration in this year’s HPCwire Readers' Choice Awards.

🏆 Spack 1.0 is also nominated for best HPC programming tool.

Vote now: www.hpcwire.com/2025-hpcwire...

#HPSF #Spack #HPCwire #HPCCollaboration #HPCProgrammingTool

📢 Talk Announcement

"Reproducible software provisioning for high performance computing (HPC) and research software engineering (RSE) using Spack", by Martin Lang and Hans Fangohr.

📜 pretalx.com/pydata-paris-2025/talk/8C889E
📅 pydata.org/paris2025/schedule
🎟 pydata.org/paris2025/tickets

Release v1.0.2 (2025-09-11) · spack/spack Bug Fixes spack config edit can now open malformed YAML files. (#51088) spack edit -b supports specifying the repository path or its namespace. (#51084) spack repo list escapes the color code for ...

Spack v1.0.2 is out! This release has a number of bug fixes and some improvements. #hpc #packaging

See the notes for details:
github.com/spack/spack/...

YouTube video by Sharcnet HPC Installing your software packages with Spack

Nice little intro to Spack by Pawel Pomorski of Compute Canada

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

Release v1.0.1 (2025-08-11) · spack/spack Bug Fixes Ensure forward compatibility of package hashing with the upcoming Python 3.14 release. (#51042) The spack diff command now shows differences in runtime dependencies (e.g., gcc-runtime, g...

Spack v1.0.1 is out!

github.com/spack/spack/...

This is a bug fix release -- check out the release notes for details! #hpc #spack

We're looking forward to participating in the 2025 International Conference on Parallel Processing (ICPP) 🤓

We'll be having a hands on workshop showcasing an introduction to Performance Portable HPC Development with Spack, Kokkos, and Trilinos.

See you there ✨ hpsf.io/blog/2025/hp...

a man in a white shirt is standing in front of a brick house with the words hi there above him . Alt: Napoleon dynamite waving hi there

👋

Congratulations to the Spack team on reaching this significant milestone!

Hard to believe!

Cant wait to try this out. Huge achievement!

This is excellent news! Spack is an incredible tool within the HPC software management space, but I also use it on my own Linux machine to manage builds and environments. Like conda for compiled code.

💥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/...