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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 1d

I'm honored to present the Raj Reddy Artificial Intelligence lecture at Carnegie Mellon University this Thursday. Join us in person at 5pm in Rashid Auditorium, Gates Hillman 4401!

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This lecture series is honoring the Turing award winner's work in AI.

Raj Reddy Artificial Intelligence Lecture - Torsten Hoefler | Carnegie Mellon University Computer Science Department

We will explore the fascinating evolution of Large Language Models (LLMs) and their transformative journey through the lenses of computation and optimization. We begin by tracing the origins of LLMs,…

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Reposted by Torsten Hoefler 🇨🇭

Association for Computing Machinery @acm.org · 1d

Thanks to The New York Times for featuring the ACM A.M. Turing Prize! Indeed, beyond the Nobel Prizes, "there are plenty of other prizes scientists and mathematicians can compete for."

Learn more: buff.ly/NAhXVmy

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 1d

Congrats Ian - well deserved!

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 3d

The first ADIA Lab transactions edited by Horst Simon arrive at my desk 📖.

An exciting mix of different science areas under the umbrella of advanced scientific computing and #AI 🎯. Congratulations to Horst and all co-authors 👏.

Onward 🚀!

Reposted by Torsten Hoefler 🇨🇭

Association for Computing Machinery @acm.org · 4d

Listen to 2024 ACM Prize in Computing recipient Torsten Hoefler share how he tries to bridge academia and industry for societal impact . Full episode here or wherever you get your podcast: learning.acm.org/bytecast/ep7...

#ACMByteCast #computing

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 7d

Cool and impactful project led by the MPI-M: coupled simulation of the full Earth system in 1.25km resolution. Unprecedented complexity, fidelity, and performance at 82.5 simulated days per day. Accelerated by DaCe on GH200 - next generation #HPC for #climate science is here!

Global climate simulations achieve 1.25 km resolution—team nominated for Climate Gordon Bell Prize | CSCS

For the first time, scientists have run global coupled climate simulations at a resolution of just 1.25 kilometres. Using CSCS’s “Alps” supercomputer, the team including researchers from ETH Zürich…

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 9d

I met many of my heroes at my first Heidelberg Laureate Forum #HLF25! Exciting discussions with 28 other laureates of the five highest awards in CS and Math and young researchers!

Watch my Spark talk at: buff.ly/SO6ntUb

Thanks to the HLF Foundation and Klaus Tschira Stiftung.

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 10d

Happy 100th Birthday to Seymour Cray! 🎂

We took your relentless pursuit of speed and parallel processing, and built on your ideas to start the #AI revolution. Every neural network owes a debt to your chips.

Thanks for the gigahertz, Seymour! We're putting them to good use - your #LLM friend. 😉 #AI

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Reposted by Torsten Hoefler 🇨🇭

Association for Computing Machinery @acm.org · 12d

Listen to 2024 ACM Prize in Computing recipient Torsten Hoefler discuss the power of High Performance Computing. Full episode here or wherever you get your podcast: learning.acm.org/bytecast/ep7...

#ACMByteCast #computing

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 15d

Apertus, the Swiss Fully-Open-Data model downloaded more than 379k times - ~13 downloads per minute of up to 140+ GiB! Trending for some weeks among the world's top LLMs.

The techreport is now on arXiv: buff.ly/bvSioQH

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 17d

Bill Gropp speaks at the Modeling to Learning with #HPC #ICERM workshop about MPI performance, emphasizing the characteristic rendezvous "little blip" where bandwidth is lost in transition. This will completely go away to a smooth transition with Deferrable Sends in Ultra Ethernet!

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 17d

Microsoft's first of many (connected!) Fairwater GB200 Supercomputers coming online in Wisconsin. 10x faster than the top of the #top500 list powered by an innovative network after years of planning and design. Proud to have contributed :-). Watch out for more info appearing.

Inside the world’s most powerful AI datacenter - The Official Microsoft Blog

This week we have introduced a wave of purpose-built datacenters and infrastructure investments we are making around the world to support the global adoption of cutting-edge AI workloads and cloud…

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 17d

Those evil non-continuities messing up the clean physics :-).

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 24d

Wonderful ICERM meeting on #HPC and #AI honoring Bill Gropp from NCSA. After crossing five US states by car (NJ, NY, CT, RI, MA) I met many old and new friends. Thanks to David Keyes to take the lead of this in a multi-year planning effort!

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · 28d

Was great to attend the Intel Academic Security workshop in Hillsboro, OR to talk about Marcin's work on performance aspects of Confidential HPC and AI systems as well as giving a keynote on UE from a security perspective. TSS rules - thanks to Eric Spada's leadership!

Read more: buff.ly/A9jczpC

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Reposted by Torsten Hoefler 🇨🇭

SPCL@ETH @spcl-eth.bsky.social · 28d

📢REPS accepted at EuroSys 2026!🚀
A per-packet load balancer for out-of-order transports. It caches high-performing paths and reroutes away from failures. It requires no switch changes and uses only ~25B per flow.

👉https://arxiv.org/pdf/2407.21625

#HPC @thoefler.bsky.social @csateth.bsky.social

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · Sep 8

New #ISC25 podcast with Kevin Jackson on ISC highlights on connecting everything, #AI vs. #HPC? No! HPC is the Engine for AI and AI is HPC.

Precision boosting, Ultra Ethernet, Reasoning Language Models, AI applications, and Supercomputing as driver for future societies!

Torsten Hoefler, ISC25 Program Chair, on Community, Connections, and the Vital Role of HPC and AI

Listen to Torsten Hoefler, ISC25 Program Chair, on Community, Connections, and the Vital Role of HPC and AI by Scaling Intelligence #np on #SoundCloud

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Reposted by Torsten Hoefler 🇨🇭

Glenn K. Lockwood @glennklockwood.com · Aug 14

The paper is really good. It makes me wish my new job had me working on more fabric-related stuff. The networking inside storage systems is not very exciting.

Torsten Hoefler 🇨🇭 @thoefler.bsky.social · Aug 13

It can be daunting to read all 562 pages of Ultra Ethernet 1.0 for next-generation #AI and #HPC networking. Thus, we prepared an author's cut paper about the key principles, architecture, and innovation.

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I will also give a distilled short talk on this at hoti.org next week!

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Reposted by Torsten Hoefler 🇨🇭

SPCL@ETH @spcl-eth.bsky.social · Sep 3

Happening right now!🚀 Afif Boudaoud from @spcl-eth.bsky.social is presenting today in the AI Models & Approaches session at IEEE Cluster 2025 in Edinburgh!

Check out our paper on DaCe AD👉 arxiv.org/abs/2509.02197

#HPC @thoefler.bsky.social @csateth.bsky.social

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Reposted by Torsten Hoefler 🇨🇭

SPCL@ETH @spcl-eth.bsky.social · Sep 4

📢 Our paper Demystifying Chains, Trees, and Graphs of Thoughts just got accepted by the journal IEEE Transactions on Pattern Analysis and Machine Intelligence!🚀

👉https://ieeexplore.ieee.org/document/11123142
👉https://arxiv.org/abs/2401.14295

#HPC @thoefler.bsky.social @csateth.bsky.social

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · Sep 3

Learn about Ultra Ethernet 1.0 from some of the authors.

Abdul Kabbani from Microsoft and I will be speaking about details of the 1.0 specification on Mon Sep. 8th 10am PST.

Join in-person at Microsoft Redmond building 99/1915 (open to public) or online buff.ly/vWIGYls

More info: buff.ly/ijiW5so

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · Sep 3

Congrats to Switzerland 🇨🇭 to its first sovereign #LLM #AI #chatbot. Apertus is a fully open (data) model trained on CSCS' 10,752 GH200 superchips #HPC.

Like a proper Swiss - multi-lingual, ethical, neutral, and open (direct) 😅!

Try: publicai.co

Download: buff.ly/sbZJOyo

Study: buff.ly/dHfcjkL

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Reposted by Torsten Hoefler 🇨🇭

Underfox @underfox3.bsky.social · Aug 28

In this paper is presented an ab-initio transistor simulation of unprecedented scale including electron-electron interactions within the self-consistent GW approximation, carefully optimized to take advantage of the Alps and Frontier supercomputers. #HPC

arxiv.org/pdf/2508.19138

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · Sep 1

The three tiers of openness for AI models: open weights, open source, and open data.

They determine scientific reproducibility, analyzability, and integrity of released models.

#AI for #Science

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Torsten Hoefler 🇨🇭 @thoefler.bsky.social · Aug 21

3200 published papers this year 🤯

EMNLP @emnlpmeeting.bsky.social · Aug 20

✨We are thrilled to announce that over 3200 papers have been accepted to #EMNLP2025 ✨

This includes over 1800 main conference papers and over 1400 papers in findings!

Congratulations to all authors!! 🎉🎉🎉

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