Todd Gamblin
@tgamblin.bsky.social
Dev tools, open source, HPC, systems, parallel computing at LLNL. spack.io guy. Setting up http://hpsf.io. Opinions mine. he/him.
Reposted by Todd Gamblin
Me in the airport after not having slept, passing -mcmodel=large to the compiler for the fifth time hoping it fixes my GOT relocation issues
October 14, 2025 at 5:44 AM
Me in the airport after not having slept, passing -mcmodel=large to the compiler for the fifth time hoping it fixes my GOT relocation issues
Reposted by Todd Gamblin
Reposted by Todd Gamblin
A Fedora fork called M’linux
Are you allowed to claim Linux cred if it’s Fedora
October 8, 2025 at 2:30 AM
A Fedora fork called M’linux
Reposted by Todd Gamblin
Ask not for whom the bell tolls, it tolls for ^G
October 6, 2025 at 4:53 PM
Ask not for whom the bell tolls, it tolls for ^G
Reposted by Todd Gamblin
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 Todd Gamblin
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 Todd Gamblin
📢 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
"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
September 16, 2025 at 7:01 AM
📢 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
"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
Reposted by Todd Gamblin
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/...
See the notes for details:
github.com/spack/spack/...
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 ...
github.com
September 16, 2025 at 9:10 PM
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/...
See the notes for details:
github.com/spack/spack/...
Reposted by Todd Gamblin
Installing your software packages with Spack
YouTube video by Sharcnet HPC
www.youtube.com
September 16, 2025 at 4:28 AM
Reposted by Todd Gamblin
Don't miss our 4️⃣ day tutorial - Intro to Performance Portable #HPC Development with Spack, Kokkos, & Trilinos - at International Conference on Parallel Processing (ICPP) in San Diego, CA from September 8-11
Early registration savings end on August 20th 👉 Register: icpp2025.sdsc.edu/registration
Early registration savings end on August 20th 👉 Register: icpp2025.sdsc.edu/registration
August 14, 2025 at 7:15 PM
Don't miss our 4️⃣ day tutorial - Intro to Performance Portable #HPC Development with Spack, Kokkos, & Trilinos - at International Conference on Parallel Processing (ICPP) in San Diego, CA from September 8-11
Early registration savings end on August 20th 👉 Register: icpp2025.sdsc.edu/registration
Early registration savings end on August 20th 👉 Register: icpp2025.sdsc.edu/registration
Reposted by Todd Gamblin
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
github.com/spack/spack/...
This is a bug fix release -- check out the release notes for details! #hpc #spack
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...
github.com
August 13, 2025 at 7:36 PM
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
github.com/spack/spack/...
This is a bug fix release -- check out the release notes for details! #hpc #spack
Reposted by Todd Gamblin
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...
Reposted by Todd Gamblin
Further update as of ~9:20pm Pacific Time on 7/29: There has been a *localized* upgrade to Tsunami Warning for segment of NorCal coast due to potential for <6 ft inundation near Crescent City. Rest of U.S./Canada West Coast remain under (lesser) Advisory. tsunami.gov/events/P...
July 30, 2025 at 4:24 AM
Further update as of ~9:20pm Pacific Time on 7/29: There has been a *localized* upgrade to Tsunami Warning for segment of NorCal coast due to potential for <6 ft inundation near Crescent City. Rest of U.S./Canada West Coast remain under (lesser) Advisory. tsunami.gov/events/P...
Reposted by Todd Gamblin
Congratulations! That’s a huge milestone and so cool to see
July 20, 2025 at 10:34 PM
Congratulations! That’s a huge milestone and so cool to see
Reposted by Todd Gamblin
💥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 Todd Gamblin
Please join us in welcoming R‑CCS as our newest General Member 🙌
R-CCS brings deep expertise in high performance computing and optimization for Arm systems, and is the team behind the Fugaku supercomputer.
Read more: hpsf.io/blog/2025/hp...
R-CCS brings deep expertise in high performance computing and optimization for Arm systems, and is the team behind the Fugaku supercomputer.
Read more: hpsf.io/blog/2025/hp...
July 8, 2025 at 2:55 PM
Please join us in welcoming R‑CCS as our newest General Member 🙌
R-CCS brings deep expertise in high performance computing and optimization for Arm systems, and is the team behind the Fugaku supercomputer.
Read more: hpsf.io/blog/2025/hp...
R-CCS brings deep expertise in high performance computing and optimization for Arm systems, and is the team behind the Fugaku supercomputer.
Read more: hpsf.io/blog/2025/hp...
We’ve got a request for information out on where we want to take Livermore Computing and other #HPC centers in the next five years.
hpc.llnl.gov/fg-hpcc-rfi
Check it out and send us your thoughts.
hpc.llnl.gov/fg-hpcc-rfi
Check it out and send us your thoughts.
Request for Information–Future Generation High Performance Computing Center | HPC @ LLNL
This website enables public access to Request for Information No. HPC-007 (RFI) pertaining to a Future Generation High Performance Computing Center. The RFI points of contact are LLNS Contract Analyst...
hpc.llnl.gov
June 25, 2025 at 11:21 PM
We’ve got a request for information out on where we want to take Livermore Computing and other #HPC centers in the next five years.
hpc.llnl.gov/fg-hpcc-rfi
Check it out and send us your thoughts.
hpc.llnl.gov/fg-hpcc-rfi
Check it out and send us your thoughts.
Reposted by Todd Gamblin
Ultra Ethernet 1.0 is finally released for everybody to study :-). Find the full 562-page specification at: buff.ly/6Azv6x8
Thanks to everybody whol helped in the process. It has been a whild ride. Now we're looking forward to strong #HPC and #AI products.
Thanks to everybody whol helped in the process. It has been a whild ride. Now we're looking forward to strong #HPC and #AI products.
June 11, 2025 at 2:07 PM
Ultra Ethernet 1.0 is finally released for everybody to study :-). Find the full 562-page specification at: buff.ly/6Azv6x8
Thanks to everybody whol helped in the process. It has been a whild ride. Now we're looking forward to strong #HPC and #AI products.
Thanks to everybody whol helped in the process. It has been a whild ride. Now we're looking forward to strong #HPC and #AI products.
Reposted by Todd Gamblin
Every so often I remember that openai has a model called 4o and another model called o4 and I lose 10 sanity points
June 12, 2025 at 5:11 AM
Every so often I remember that openai has a model called 4o and another model called o4 and I lose 10 sanity points
Reposted by Todd Gamblin
🌍 Researchers developing Earth system models:
#ESiWACE3 offers in-kind HPC support to help you adopt tools developed in ESiWACE3 and adapt your models for the exascale-computing challenge
🛠 Kernel Tuner, AutoRPE, Spack, APP, containers
🔗 Apply now: www.esiwace.eu/services/sof...
#ESiWACE3 offers in-kind HPC support to help you adopt tools developed in ESiWACE3 and adapt your models for the exascale-computing challenge
🛠 Kernel Tuner, AutoRPE, Spack, APP, containers
🔗 Apply now: www.esiwace.eu/services/sof...
June 4, 2025 at 1:39 PM
🌍 Researchers developing Earth system models:
#ESiWACE3 offers in-kind HPC support to help you adopt tools developed in ESiWACE3 and adapt your models for the exascale-computing challenge
🛠 Kernel Tuner, AutoRPE, Spack, APP, containers
🔗 Apply now: www.esiwace.eu/services/sof...
#ESiWACE3 offers in-kind HPC support to help you adopt tools developed in ESiWACE3 and adapt your models for the exascale-computing challenge
🛠 Kernel Tuner, AutoRPE, Spack, APP, containers
🔗 Apply now: www.esiwace.eu/services/sof...
Reposted by Todd Gamblin
HPSF 🤝 ISC 2025
Join us next week at ISC for tutorials, BoFs, and workshops on HPSF projects Spack, OpenCHAMI, and more.
🗓️ Details: hpsf.io/blog/2025/hp...
#HPSF #ISC25 #ISChpc #ISC25_SCC #ConnectingTheDots
Join us next week at ISC for tutorials, BoFs, and workshops on HPSF projects Spack, OpenCHAMI, and more.
🗓️ Details: hpsf.io/blog/2025/hp...
#HPSF #ISC25 #ISChpc #ISC25_SCC #ConnectingTheDots
June 4, 2025 at 3:22 PM
HPSF 🤝 ISC 2025
Join us next week at ISC for tutorials, BoFs, and workshops on HPSF projects Spack, OpenCHAMI, and more.
🗓️ Details: hpsf.io/blog/2025/hp...
#HPSF #ISC25 #ISChpc #ISC25_SCC #ConnectingTheDots
Join us next week at ISC for tutorials, BoFs, and workshops on HPSF projects Spack, OpenCHAMI, and more.
🗓️ Details: hpsf.io/blog/2025/hp...
#HPSF #ISC25 #ISChpc #ISC25_SCC #ConnectingTheDots