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/...

Staff DevOps Engineer Company Description: NBCUniversal is one of the world's leading media and entertainment companies. We create world-class content, which we distribute across our portfolio of film, television, and stre...

@kermmartian.z80.me and I are hiring for a staff-level DevOps engineer! @spackpm.bsky.social expertise is particularly welcome.

Audience intently watching Greg’s talk

Greg presenting on the road to v1.0

Awesome to see 48 people in the room for the first ever Spack User Meeting at the @hpsf.bsky.social conference!

Greg Becker is outlining the road to v1.0 in the opening session.

#hpc #hpsf @spackpm.bsky.social

Don't forget to fill out the 2025 Spack community survey -- it's open until this Saturday, May 3.

Help us get to 200 responses -- we're only 15 away!

Join us at the Spack User Meeting, May 7-8 at HPSFCon!

We've got 34 presenters lined up and can't wait to hear what they're all doing with Spack.

In May at #HPSFCon in Chicago, catch the Spack User Meeting to participate in sessions such as:
🌍 State of the Spack Community
🎉 Spack v1.0
⚡ Optimizing Spack: Multi-Package Parallel Builds for Faster Installation
🧩 Fast Binary Installation with Spack Splicing
See: hpsf2025.sched.com/overview/typ...

Hey Spack community! We're kicking off the 2025 Spack User Survey! Take 10-15 min to tell us how you feel:

📝https://forms.gle/G7xoddMwPF1k1BxT7

These surveys are invaluable for helping us set development priorities, so don't delay!

We'll keep this open until May 3.

#hpc

The schedule is live for the first Spack User Meeting! The schedule for SUM25, held at HPSFCon 2025, is online! We’ve got a great lineup with 34 contributed talks and updates on the Spack community and Spack v1.0.

The schedule for the first annual Spack User Meeting (SUM25) is online!

We've got 34 talks from user and contributors around the world. Couldn't have asked for a better set of speakers.

See you all in Chicago May 7-8! Register before the early bird deadline on March 21!

spack.io/sum25-schedu...

👏👏👏