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Axel Huebl

@axccl.bsky.social
329 followers 266 following 170 posts

computational physicist • accelerates accelerator research at @berkeleylab.bsky.social • laser-plasma aficionado • PByte connoisseur • mostly memory BW bound • openPMD • sciency C++ & 🐍 • GPGPU since before it was cool • he/his • Dr. rer. nat. Dipl.-Phys.

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Reposted by Axel Huebl
High Performance Software Foundation (HPSF) @hpsf.bsky.social · 18h
HPC Best Practices Webinar on Oct 28th at 1pm ET features Julien Bigot & Xavier Delaruelle of @cea.fr and @axccl.bsky.social of @berkeleylab.lbl.gov who will detail the support HPSF offers to projects like tools, CI/CD, continuous benchmarking, outreach, training, packaging, & distribution
ideas-productivity.org
The HPSF: Building the Future of High-Performance Software, Together
The High Performance Software Foundation (HPSF), a project within the Linux Foundation, champions, promotes, and advances core portable software for HPC. It achieves this by increasing adoption, lower...
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Axel Huebl @axccl.bsky.social · 21/04/2026
Super excited about our new #preprint led by Carl A. Lindstrøm et al. on their highly anticipated "Achromatic optics using nonlinear plasma lenses for beam-quality preservation between plasma-accelerator stages"! arxiv.org/abs/2604.17605
Working principle plot: interstage over 6 metersEnergy scaling of key parameters
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Axel Huebl @axccl.bsky.social · 26/02/2026
It's a bit sad how many web apps / UIs do not support running behind HTTP Basic Auth anymore :-S Often due to static paths and assets that do not forward the auth (probably to load balance these static assets).
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Axel Huebl @axccl.bsky.social · 16/01/2026
The pybind11-stubgen project seeks support in #maintaining it! We #pybind11 maintainers would move it to the pybind mainline org, but we need a community to help support the .pyi stub generator <3 Chime in here: github.com/sizmailov/py... #opensource #sustainability #CallForMaintainers
github.com
Call for maintainers · Issue #244 · sizmailov/pybind11-stubgen
I've started pybind11-stubgen when there were no good alternatives to make good enough stubs for pybind modules. As of today I don't have a C++ project that needs python bindings, so I'm a bit out ...
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Axel Huebl @axccl.bsky.social · 16/01/2026
Are you one of the 10'000s of #CXX #Python developers using #pybind11? Do you care about great #autodocs and #autocompletion in #interactive workflows?
github.com
Call for maintainers · Issue #244 · sizmailov/pybind11-stubgen
I've started pybind11-stubgen when there were no good alternatives to make good enough stubs for pybind modules. As of today I don't have a C++ project that needs python bindings, so I'm a bit out ...
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Axel Huebl @axccl.bsky.social · 07/01/2026
Look at this #zenodo #openscience peeps, @vsoch.bsky.social created an awesome @github.com action for us 🤩 github.com/vsoch/zenodo...
github.com
GitHub - vsoch/zenodo-validator: GitHub Action to validate Zenodo JSON Metadata Files. 🛡️
GitHub Action to validate Zenodo JSON Metadata Files. 🛡️ - vsoch/zenodo-validator
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Axel Huebl @axccl.bsky.social · 08/12/2025
Oh, and sorry to hear 😔
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Axel Huebl @axccl.bsky.social · 08/12/2025
I think although they are not equally hot they are still fire 🔥 I'll see myself out.
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Axel Huebl @axccl.bsky.social · 21/11/2025
I need the list please 😁
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Reposted by Axel Huebl
High Performance Software Foundation (HPSF) @hpsf.bsky.social · 20/11/2025
HPSFCon 2026 Call for Proposals are OPEN! 📄 🎤 Submit talks, discussions, lightning sessions, posters that are moving HPC forward 📅 Deadline: January 11, 2026 👉 Submit your proposal here: events.linuxfoundation.org/hpsf-confere... 💭 Learn more about what we are looking for: hpsf.io/blog/2025/hp...
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Axel Huebl @axccl.bsky.social · 20/11/2025
Oh no! Get well soon!
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Reposted by Axel Huebl
Randall Munroe @xkcd.com · 18/11/2025
Beam Dump xkcd.com/3168/
Comic. [Person with ponytail pointing at diagram while speaking to three other people] PERSON: If the emergency stop is activated, any riders on the waterslide will be diverted into the beam dump, a large graphite block which will safely absorb their momentum. [caption] We regretted hiring an accelerator physicist to design our water park.
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Reposted by Axel Huebl
High Performance Software Foundation (HPSF) @hpsf.bsky.social · 18/11/2025
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...
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Reposted by Axel Huebl
High Performance Software Foundation (HPSF) @hpsf.bsky.social · 18/11/2025
HPSF 🤝 SC25 Come say hi at booth 6134!
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Axel Huebl @axccl.bsky.social · 18/11/2025
Excellent
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Axel Huebl @axccl.bsky.social · 16/11/2025
You probably refer to the original Xbox and PS then 😁 no numbers
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Axel Huebl @axccl.bsky.social · 16/11/2025
Lego!
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Axel Huebl @axccl.bsky.social · 16/11/2025
Flying to #SC25: come see us tomorrow morning at #ISAV25 and visit our @hpsf.bsky.social booth! I'll be at SC until Wed noon this year.
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Axel Huebl @axccl.bsky.social · 13/11/2025
But does 121V and above include 240V?🥲
NEMA 14-50 Outlet
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Axel Huebl @axccl.bsky.social · 12/11/2025
Oh nice. Can you also filter by impedence?
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Axel Huebl @axccl.bsky.social · 12/11/2025
Naturally 😉
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Axel Huebl @axccl.bsky.social · 12/11/2025
I see you received my reminder emails 😁
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Axel Huebl @axccl.bsky.social · 12/11/2025
Nooo 🥲
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Axel Huebl @axccl.bsky.social · 10/11/2025
We look forward to welcome #SC25 attendees for #ISAV25 on Sunday morning! Program: sc25.conference-program.com/session/?ses... Homepage: isav-workshop.github.io/2025/
sc25.conference-program.com
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Axel Huebl @axccl.bsky.social · 08/11/2025
Since this site does not accept vertical tab, I go for... ACK BEL
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Axel Huebl @axccl.bsky.social · 01/11/2025
Boo 👻 ✊ Night time people
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Axel Huebl @axccl.bsky.social · 01/11/2025
Awesome. I started using std SIMD + vir::simd extensions and can't wait for the 26 features for better usability in the standard. github.com/BLAST-Impact...
github.com
CPU SIMD Support by ax3l · Pull Request #1002 · BLAST-ImpactX/impactx
Until recently (see AMReX PR AMReX-Codes/amrex#4520), AMReX does not have a concept to help users write effective SIMD code on CPU, besides relying on auto-vectorization and pragmas, which are unre...
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Axel Huebl @axccl.bsky.social · 28/10/2025
Unless you live in space or inside a particle accelerator, I hope that your values are << 1
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Axel Huebl @axccl.bsky.social · 28/10/2025
Found my new favorite unit: bit flips / flop
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Axel Huebl @axccl.bsky.social · 27/10/2025
Can you tell me some details about the DP support? I know it's heavily AI focused, but wonder if it makes for good CI runners...
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Reposted by Axel Huebl
LBNL Accelerator Technology & Applied Physics @atap.lbl.gov · 17/10/2025
Our BELLA Center has accomplished the first characterization of a collimated muon beam using a laser-plasma accelerator, laying the groundwork for advanced imaging techniques far exceeding current technologies @BerkeleyLab @doescience @ENERGY Read more here
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Axel Huebl @axccl.bsky.social · 13/10/2025
😂😉
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Axel Huebl @axccl.bsky.social · 10/10/2025
Thanks for the hint! Yes, we will haggle about this on Tuesday, too :D
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Axel Huebl @axccl.bsky.social · 10/10/2025
Wow, 52 paper submissions for #hpc #apps in our #IPDPS26 track this year. Do you like to join our strong review committee? Please contact me :)
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Axel Huebl @axccl.bsky.social · 04/10/2025
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Axel Huebl @axccl.bsky.social · 04/10/2025
media.tenor.com
a cartoon of donald duck standing on a fence
Alt: Ducktails: duck jumping into a pool of money
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Axel Huebl @axccl.bsky.social · 04/10/2025
Dang, I still need those TLDs, ok?!
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Reposted by Axel Huebl
Axel Visel @axelvisel.bsky.social · 02/10/2025
Starting in 15 minutes!
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Reposted by Axel Huebl
High Performance Software Foundation (HPSF) @hpsf.bsky.social · 01/10/2025
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.
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Reposted by Axel Huebl
Spack @spackpm.bsky.social · 02/10/2025
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
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Reposted by Axel Huebl
High Performance Software Foundation (HPSF) @hpsf.bsky.social · 24/09/2025
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...
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Reposted by Axel Huebl
High Performance Software Foundation (HPSF) @hpsf.bsky.social · 18/09/2025
Working on performance portability, sustainability, or trust in software? HPSFCon sessions dive into these challenges and more. 👀 🎧 Watch them on demand: www.youtube.com/playlist?lis...
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Reposted by Axel Huebl
European Commission @ec.europa.eu · 06/09/2025
🚀 Europe’s first exascale supercomputer is here! JUPITER, launched in Germany, is the EU’s most powerful system and fourth fastest worldwide. 100% powered by renewables, it has also ranked first in energy efficiency. It will boost AI, science, and climate research. Read more - europa.eu/!vcWBqW
A futuristic corridor inside a data center with rows of tall, blue-lit server racks on both sides. Text overlaid at the bottom reads "JUPITER Supercomputer: Europe enters the exascale supercomputing league." In the lower right corner, there is a logo of the European Commission.
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Axel Huebl @axccl.bsky.social · 01/09/2025
I think I need some electric bass and distorted guitar samples in strudel... 😂
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Axel Huebl @axccl.bsky.social · 01/09/2025
As a kid of the 90s: I love it 😁
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Axel Huebl @axccl.bsky.social · 25/08/2025
Urgh, that is annoying. There is a block button though that helped me last time.
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Reposted by Axel Huebl
Henry Schreiner @henryiii.bsky.social · 20/08/2025
cibuildwheel π is out! (3.1.4). A few nice things, like --clean-cache, Android fixes, and new versions of things like CPython 3.14rc2. Note for iOS on GHA/Azure, you need macOS-14, Microsoft broke macOS-15 images for iOS (WRT CPython's test runner, anyway) github.com/pypa/cibuild...
github.com
Release v3.1.4 · pypa/cibuildwheel
✨ Add a --clean-cache command to clean up our cache (#2489) 🛠 Update Python to 3.14rc2 and other patch version bumps (#2542, #2556) 🛠 Update Pyodide to 0.28.2 (#2562, #2558) 🐛 Fix resolution with p...
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Axel Huebl @axccl.bsky.social · 09/08/2025
I know, I know... 😅
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Axel Huebl @axccl.bsky.social · 09/08/2025
Performance portability layer gotta perform!
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