Little bit of good news - Congress is quietly pushing for NSF/NASA/DOE budgets that ignore the dramatic cuts proposed by the earlier budget blueprint: www.science.org/content/arti...

I use this read-it-later app that continually resurfaces old things I’ve read and found interesting. Headed into 2026 in a job that is all #AI all the time, I feel like this quote is more meaningful than ever. Everyone is an expert, yet so few actually understand. Source: fs.blog/two-types-of...

Interested in features, design, history or migration to #FluxFramework? We've updated our admin guide for you! flux-framework.readthedocs.io/projects/flu... Have questions? Let us know! We are aiming to better engage with all of you, our community, in 2026 🎉 starting with joining @hpsf.bsky.social!

What dingdong decided that the first week of the new year is a good time to host what has become a major annual technology conference? Also, what dingdong decided that datacenter products should be announced at something originally called the “Consumer Electronics Show?” #grumble #happynewyear

I pitch in and so should you. Plus there are stickers.

Sync training across geos isn’t new, tho doing it b/c of training data governance is. But training across AMD+NVIDIA is new; leave it to DOE to demonstrate such odd methods! Unclear what separates “federated learning” from multicluster training tho. www.sandia.gov/labnews/2025... #AI

Very last minute, but I'm giving a talk online tomorrow (Thurs Dec 18) about my analysis of over 85K model training checkpoints and implications for system design. Punchline is "less bandwidth makes training go faster." Registration required: www.vastdata.com/events/vast-... #AI #storage

NERSC recently did a wholesale replacement of its FDR InfiniBand storage fabric to RoCE. The IB was a greenfield installation back when I started in 2015, and replacing it with a competing technology in production is quite the feat. Glad to hear it succeeded. www.nersc.gov/news-and-eve...

Idle CPUs in GPU clusters do not “exceed $250 million per year in electricity.” This is crazy math. What are they using as fuel here??

Does this mean no more dirt-cheap NRE from Slurm? Or will Slurm development no longer be coin-operated? Would love to see serious engineering effort go into modernizing Slurm, but this could go in many directions.

Philosophical Q: what is the role of industry in the CS peer review process? I am no longer a researcher and no longer publish (so far), but am still invited to review papers/proposals/projects/abstracts. It's not really my job to do this anymore, but I still feel partly obligated. Thoughts?

Wow, that is legit! Complete with Jensen figurine. Wonder if he gets royalties.

So yesterday I flew home from Oak Ridge, TN to San Francisco by way of Dulles Airport. My two flights emitted the same amount of CO2 as running a 100 MW data center for about 70-80 minutes. Or running HPL on the Frontier supercomputer for about 7 hours. #HPC #AI

I'm excited to be in San Diego for #NeurIPS2025! Shyam Sankaran will be presenting our work at the Machine Learning for Physical Sciences (ML4PS) workshop (Upper Level Ballroom 6CF) on Saturday, 11-12: "𝐃𝐢𝐬𝐭𝐫𝐢𝐛𝐮𝐭𝐞𝐝 𝐄𝐥𝐞𝐦𝐞𝐧𝐭-𝐋𝐨𝐜𝐚𝐥 𝐓𝐫𝐚𝐧𝐬𝐟𝐨𝐫𝐦𝐞𝐫 𝐟𝐨𝐫 𝐒𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐌𝐞𝐬𝐡-𝐁𝐚𝐬𝐞𝐝 𝐌𝐨𝐝𝐞𝐥𝐢𝐧𝐠"

Honest Q: what, exactly, is an AI factory?

Helios sounds like AMD's answer to NVIDIA's rack-scale NVLink, but it uses UALink over Ethernet with custom Broadcom scale-up switches. Interestingly, HPE will ship its Helios rack before its own Cray GX rack. Another example of #HPC playing second fiddle to #AI. www.amd.com/en/newsroom/...

Wouldn’t be a trip to Oak Ridge National Lab without a leg on one of these lil guys.

I wrote up my notes from #SC25. Have a look: blog.glennklockwood.com/2025/12/sc25... I’ll keep picking away at the editing, but would love to hear more from others about what stood out to them. I wasn’t at the conference itself as much this years as in the past, so I know I missed a lot. #HPC

Appreciate the candor, and will be making sure the team is aware of the issues. I'd recommend to all to check out the article here: www.theregister.com/2025/11/27/t...

I defended my doctoral dissertation thirteen years ago this month, and the only question I got from my entire committee was “why doesn’t the water fall out of jello?” I still think about that.

It was tradition at NERSC for the director to give everyone a half-day off on the Wednesday before Thanksgiving. By comparison, VAST has no company holidays, so technically, nobody gets Thanksgiving off (much less the half day before it!)

A brave stake in the ground that defines what is (and isn’t) a parallel file system. I generally agree with Chris’ explanation. But I’m sure he’ll get hate from parallel storage elitists who don’t like how inclusive his take is.

It’s funny to see the HPE K3000 docs pitch DAOS’s key capability as bypassing POSIX, when the DAOS team openly states that the majority of DAOS users access it via POSIX. Something doesn’t line up in the value prop.

US DOE is being directed to go all-in on AI: www.whitehouse.gov/presidential... #HPC

As much as I like DAOS and Denis, he was asking for trouble when he implied that DAOS is better than others for single, huge systems. For example, the largest VAST namespace in production is larger (in exabytes) than the largest single Lustre or DAOS namespace in existence.

St. Louis's weather is working in our favor! 😁 Join us in room 260 for the Interactive and Urgent #HPC workshop at #SC25. Starting at 8:30. Keynote by Alan Chalker of OOD fame!

=> "The Future of Supercomputing Storage", HPE, DAOS UG at SC25 daos.io/wp-content/u... HPE Cray K3000 DAOS GX5000 bsky.app/profile/ogaw... SmartNIC Offload, RESDIS 2025 dl.acm.org/doi/10.1145/... www.dropbox.com/scl/fi/ymjo4... DAOS on 400 Gbps, HPE, WIP, PDSW 2025 www.pdsw.org/pdsw25/paper...

📆 Our activities at #SC25 on Friday: 📈 Workshop: Third International Workshop on HPC Testing and Evaluation of Systems, Tools, and Software (HPCTESTS 2025) ⌚ 8:30 am - 12:30 pm 📍 Room: 276 👤 Andreas Herten ➡ go.fzj.de/sc25 #HPCignites #HPC4Germany

This years venue for the #SC25 Tech Program Reception took me back to my childhood, going to my local science center in New Jersey. As has happened all week though, I kept running into friends and colleagues, so I didn’t actually get to see many of the exhibits. Alas!

Come work on GROMACS mixed precision algorithms!

@glennklockwood.com and @willkill07.bsky.social in the house!

Yippie! #SC25 #HPC #JUPITER

I sometimes have this nightmare where I am at SC on the last day, forget that the exhibit closes early (at 3pm), and wind up never getting to walk the floor at all. I don’t know what Freud would say about it, but I’m worried that it’ll come true this year. Feels like I missed the whole of #SC25.

If you are attending the Friday workshops at #SC25, please consider attending the Sixth Combined Workshop on Interactive and Urgent High-Performance Computing. Keynote by Alan Chalker from OSC, talking about Open OnDemand. www.interactivehpc.com @larofeticus.bsky.social #HPC

Andreas Dilger is now working for The Lustre Collective (thelustrecollective.com) after leaving DDN. I am glad to see his leadership continue to drive Lustre into the future. Say what you will about it, Lustre is the standard to which every other #HPC file system is compared. #SC25

It’s hard to not be a little cynical about Lustre sometimes after working in a Lustre-free world for the last two years. Want to expand your Lustre file system? Step 1 is stand up redis.

they must be too busy breaking the yottaflop barrier to staff their booth

Complete with Ian Buck kung fu gestures! But Ian’s message is right; AI doesn’t replace scientific computing as much as doomsayers want to decry that the AI/science communities want it to. #HPC

When I spent a Thanksgiving week after SC writing the non-MPI layer for Darshan years ago, I thought to myself “surely this work will make me famous!” I guess my ship finally came in at the PDSW keynote by Rob Ross. #SC25

You'll find the full schedule of EPCC activity at #SC25 on our website: www.epcc.ed.ac.uk/whats-happen...

The exhibit hall overflows into the old stadium this year. Fun to watch the setup from afar, but feel bad for the vendors who didn’t get a spot in the main room. #SC25

Here’s Rob gesturing about the nuances of PnetCDF. Sadly I didn’t think to snap a photo of @adrianjhpc.bsky.social for completeness. #SC25

#HPC #SC24. Current registration is 15,446. Peak Scinet bandwidth is 14.72 TBPS. 560 exhibitors.

Apparently I was the first DAOS user to complain about having to refer to DAOS containers by UUIDs, so they added container labels. Don’t know if this is completely true, but I remember voicing this and will accept the credit if Mohamad is willing to give it to me 🙂 (#SC25 tutorial in rm. 120)

Arrived at #SC25 I’m away from my computer today 😁 mostly … you’ll understand if you see me … Feel free to say hello if you see me around. Looking forward to a great week of people and technology etc. #HPC #AI #cloud #supercomputing

New SC record: ran into a colleague within 2 minutes of walking into the airport terminal from the curb. Been catching up nonstop straight through takeoff. Conference starts earlier and earlier every year.

Frontiere ran on Frontier. This alone is worth recognition. The TLDR is that a really big HACC job ran on Frontier with a bunch of new algorithmic optimizations. Neato.

Chatting with a pal reminded me of a fun pre-SC activity: looking back at old conference takes that aged like milk. Remember this one? #HPC #zettascale #hedoesntworkthereanymore

🎶 It's the most wonderful time of the year 🎶 #SC25

Gotta eat at least enough free Microsoft food to make up for my annual O365 subscription cost. #SC25