Axel Huebl
@axccl.bsky.social
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.
Reposted by Axel Huebl
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...
🎤 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...
November 20, 2025 at 2:42 PM
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...
🎤 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...
Reposted by Axel Huebl
![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.](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:cz73r7iyiqn26upot4jtjdhk/bafkreicnzdnpjdz4clfa2uhx6isbdwgu72oku5pee4av7paavbjmqpyoiu@jpeg)
November 18, 2025 at 3:40 AM
Reposted by Axel Huebl
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...
Reposted by Axel Huebl
HPSF 🤝 SC25
Come say hi at booth 6134!
Come say hi at booth 6134!
November 18, 2025 at 1:04 AM
HPSF 🤝 SC25
Come say hi at booth 6134!
Come say hi at booth 6134!
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.
I'll be at SC until Wed noon this year.
November 16, 2025 at 1:14 AM
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.
I'll be at SC until Wed noon this year.
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/
Program: sc25.conference-program.com/session/?ses...
Homepage: isav-workshop.github.io/2025/
sc25.conference-program.com
November 10, 2025 at 7:26 PM
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/
Program: sc25.conference-program.com/session/?ses...
Homepage: isav-workshop.github.io/2025/
Found my new favorite unit: bit flips / flop
October 28, 2025 at 9:51 PM
Found my new favorite unit: bit flips / flop
Reposted by Axel Huebl
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
@BerkeleyLab @doescience @ENERGY
Read more here
October 17, 2025 at 3:17 PM
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
@BerkeleyLab @doescience @ENERGY
Read more here
Reposted by Axel Huebl
Starting in 15 minutes!
Very much looking forward to @axelvisel.bsky.social's talk "From Nucleotide to Megabase Scale: Enhancer Function in Development and Disease" in our @enhancedgenomics.bsky.social seminar series "The 3D Regulatory Genome"
📅 02 October 2025 (today!)
⏰ 4 pm GMT
Join:
us02web.zoom.us/webinar/regi...
📅 02 October 2025 (today!)
⏰ 4 pm GMT
Join:
us02web.zoom.us/webinar/regi...
October 2, 2025 at 2:47 PM
Starting in 15 minutes!
Reposted by Axel Huebl
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.
➡️ 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.
October 1, 2025 at 6:42 PM
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.
➡️ 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.
Reposted by Axel Huebl
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
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.
➡️ 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.
October 1, 2025 at 11:37 PM
Reposted by Axel Huebl
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...
Read more about our work with Spack, Kokkos, and Trilinos: hpsf.io/blog/2025/hp...
September 24, 2025 at 4:29 PM
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...
Read more about our work with Spack, Kokkos, and Trilinos: hpsf.io/blog/2025/hp...
Reposted by Axel Huebl
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...
👀 🎧 Watch them on demand: www.youtube.com/playlist?lis...
September 18, 2025 at 7:41 PM
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...
👀 🎧 Watch them on demand: www.youtube.com/playlist?lis...
Reposted by Axel Huebl
🚀 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
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
September 6, 2025 at 7:17 AM
🚀 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
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
Reposted by Axel Huebl
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...
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...
github.com
August 20, 2025 at 5:22 AM
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...
Please don't hate me, but I will publish a tiny proceedings paper in which I list a single CPU core not far from a full GPU, because I wanted to learn how bad/good our serial vectorization is before OpenMP and MPI parallelization.
I also want to do the cardinal sin of benchmark presentation, ok?!
I also want to do the cardinal sin of benchmark presentation, ok?!
August 9, 2025 at 1:20 AM
Please don't hate me, but I will publish a tiny proceedings paper in which I list a single CPU core not far from a full GPU, because I wanted to learn how bad/good our serial vectorization is before OpenMP and MPI parallelization.
I also want to do the cardinal sin of benchmark presentation, ok?!
I also want to do the cardinal sin of benchmark presentation, ok?!
Reposted by Axel Huebl
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...
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...
July 31, 2025 at 4:13 PM
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...
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...
C++ std::simd (ok, std::datapar) is cool. Portable, order-of-magnitude speedups (w/ modern CPUs and the right, flop intense algorithms) 🚀 #HPC #SIMD
github.com/BLAST-Impact...
github.com/BLAST-Impact...
CPU SIMD Support by ax3l · Pull Request #1002 · BLAST-ImpactX/impactx
todo
See AMReX-Codes/amrex#4520
To Do
update install docs
update CI (partially): SIMD, ideally even single-precision (uncovers more issues at compile-time)
Benchmarks on Dane (LLNL)
Machine: Da...
github.com
July 31, 2025 at 8:12 AM
C++ std::simd (ok, std::datapar) is cool. Portable, order-of-magnitude speedups (w/ modern CPUs and the right, flop intense algorithms) 🚀 #HPC #SIMD
github.com/BLAST-Impact...
github.com/BLAST-Impact...
Reposted by Axel Huebl
The 13th MVAPICH User Group (MUG) Conference is coming up (Aug 18-20 in Columbus). It's a great event for focused technical presentations around MPI and network performance. Great speaker lineup too. Wish I could make it in-person, but virtual attendance is free
mug.mvapich.cse.ohio-state.edu
#HPC
mug.mvapich.cse.ohio-state.edu
#HPC
MUG :: Home
mug.mvapich.cse.ohio-state.edu
July 29, 2025 at 9:40 PM
The 13th MVAPICH User Group (MUG) Conference is coming up (Aug 18-20 in Columbus). It's a great event for focused technical presentations around MPI and network performance. Great speaker lineup too. Wish I could make it in-person, but virtual attendance is free
mug.mvapich.cse.ohio-state.edu
#HPC
mug.mvapich.cse.ohio-state.edu
#HPC
Reposted by Axel Huebl
💥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/...
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
July 20, 2025 at 10:45 AM
💥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/...
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/...
Reposted by Axel Huebl
New #HPC Job! 😍️
HPC Software Scientist: Mixed Precision in molecular dynamics / GROMACS
Location: Stockholm, sweden
Employer: KTH Royal Institute of Technology in Stockholm
Remote: Remote friendly
HPC Software Scientist: Mixed Precision in molecular dynamics / GROMACS
Location: Stockholm, sweden
Employer: KTH Royal Institute of Technology in Stockholm
Remote: Remote friendly
July 3, 2025 at 3:15 AM
New #HPC Job! 😍️
HPC Software Scientist: Mixed Precision in molecular dynamics / GROMACS
Location: Stockholm, sweden
Employer: KTH Royal Institute of Technology in Stockholm
Remote: Remote friendly
HPC Software Scientist: Mixed Precision in molecular dynamics / GROMACS
Location: Stockholm, sweden
Employer: KTH Royal Institute of Technology in Stockholm
Remote: Remote friendly
CfP: We are looking for talks/short/long papers to #ISAV 2025: In Situ AI, Analysis and Visualization!
Are you working on in situ methods, algorithms or the synthesis between HPC & AI/ML? Share your best results as papers, your ideas as short papers or talks! #SC25
isav-workshop.github.io/2025/
Are you working on in situ methods, algorithms or the synthesis between HPC & AI/ML? Share your best results as papers, your ideas as short papers or talks! #SC25
isav-workshop.github.io/2025/
ISAV 2025: In Situ AI, Analysis and Visualization
Information for the SC’25 conference ISAV workshop
isav-workshop.github.io
July 4, 2025 at 3:09 AM
CfP: We are looking for talks/short/long papers to #ISAV 2025: In Situ AI, Analysis and Visualization!
Are you working on in situ methods, algorithms or the synthesis between HPC & AI/ML? Share your best results as papers, your ideas as short papers or talks! #SC25
isav-workshop.github.io/2025/
Are you working on in situ methods, algorithms or the synthesis between HPC & AI/ML? Share your best results as papers, your ideas as short papers or talks! #SC25
isav-workshop.github.io/2025/