François Tessier
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hephtaicie.bsky.social
François Tessier
@hephtaicie.bsky.social
350 followers 530 following 68 posts
Research Scientist at Inria Rennes 🇫🇷. #HPC, I/O, Storage. Recent focus on #SKA 🔭. French-Swiss, former ANL 🇺🇸 and @cscsch 🇨🇭. Father of one.
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Reposted by François Tessier
ani-obsessive.bsky.social
It wasn't deep. It didn't have much to say. But Xiao Xiao inspired millions to try Flash animation for themselves.

A Beijing artist made this series -- and turned stick fights into a phenomenon. We're exploring why and how he did it:
animationobsessive.substack.com/p/when-stick...
November 3, 2025 at 7:27 PM
Reposted by François Tessier
sncs-inria.bsky.social
La cour des comptes publie son rapport sur les agences de programme.
Les agences de programmes
Depuis 2017, la France a cherché à développer une nouvelle modalité de financement de la recherche en déployant des programmes de « recherche dirigée », au sein des programmes d’investissements d’aven...
www.ccomptes.fr
November 20, 2025 at 9:32 AM
Reposted by François Tessier
hansonmark.bsky.social
We wrote the Strain on scientific publishing to highlight the problems of time & trust. With a fantastic group of co-authors, we present The Drain of Scientific Publishing:

a 🧵 1/n

Drain: arxiv.org/abs/2511.04820
Strain: direct.mit.edu/qss/article/...
Oligopoly: direct.mit.edu/qss/article/...
A table showing profit margins of major publishers. A snippet of text related to this table is below. 1. The four-fold drain 1.1 Money Currently, academic publishing is dominated by profit-oriented, multinational companies for whom scientific knowledge is a commodity to be sold back to the academic community who created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis, which collectively generated over US$7.1 billion in revenue from journal publishing in 2024 alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit margins have always been over 30% in the last five years, and for the largest publisher (Elsevier) always over 37%. Against many comparators, across many sectors, scientific publishing is one of the most consistently profitable industries (Table S1). These financial arrangements make a substantial difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor & Francis revenues were generated in North America, meaning that North American researchers were charged over US$2.27 billion by just two for-profit publishers. The Canadian research councils and the US National Science Foundation were allocated US$9.3 billion in that year. A figure detailing the drain on researcher time. 1. The four-fold drain 1.2 Time The number of papers published each year is growing faster than the scientific workforce, with the number of papers per researcher almost doubling between 1996 and 2022 (Figure 1A). This reflects the fact that publishers’ commercial desire to publish (sell) more material has aligned well with the competitive prestige culture in which publications help secure jobs, grants, promotions, and awards. To the extent that this growth is driven by a pressure for profit, rather than scholarly imperatives, it distorts the way researchers spend their time. The publishing system depends on unpaid reviewer labour, estimated to be over 130 million unpaid hours annually in 2020 alone (9). Researchers have complained about the demands of peer-review for decades, but the scale of the problem is now worse, with editors reporting widespread difficulties recruiting reviewers. The growth in publications involves not only the authors’ time, but that of academic editors and reviewers who are dealing with so many review demands. Even more seriously, the imperative to produce ever more articles reshapes the nature of scientific inquiry. Evidence across multiple fields shows that more papers result in ‘ossification’, not new ideas (10). It may seem paradoxical that more papers can slow progress until one considers how it affects researchers’ time. While rewards remain tied to volume, prestige, and impact of publications, researchers will be nudged away from riskier, local, interdisciplinary, and long-term work. The result is a treadmill of constant activity with limited progress whereas core scholarly practices – such as reading, reflecting and engaging with others’ contributions – is de-prioritized. What looks like productivity often masks intellectual exhaustion built on a demoralizing, narrowing scientific vision. A table of profit margins across industries. The section of text related to this table is below: 1. The four-fold drain 1.1 Money Currently, academic publishing is dominated by profit-oriented, multinational companies for whom scientific knowledge is a commodity to be sold back to the academic community who created it. The dominant four are Elsevier, Springer Nature, Wiley and Taylor & Francis, which collectively generated over US$7.1 billion in revenue from journal publishing in 2024 alone, and over US$12 billion in profits between 2019 and 2024 (Table 1A). Their profit margins have always been over 30% in the last five years, and for the largest publisher (Elsevier) always over 37%. Against many comparators, across many sectors, scientific publishing is one of the most consistently profitable industries (Table S1). These financial arrangements make a substantial difference to science budgets. In 2024, 46% of Elsevier revenues and 53% of Taylor & Francis revenues were generated in North America, meaning that North American researchers were charged over US$2.27 billion by just two for-profit publishers. The Canadian research councils and the US National Science Foundation were allocated US$9.3 billion in that year. The costs of inaction are plain: wasted public funds, lost researcher time, compromised scientific integrity and eroded public trust. Today, the system rewards commercial publishers first, and science second. Without bold action from the funders we risk continuing to pour resources into a system that prioritizes profit over the advancement of scientific knowledge.
November 11, 2025 at 11:52 AM
Reposted by François Tessier
suhaibkhan.bsky.social
Part 1 of the special HPCwire series about the future of #storage for #HPC and #AI lays out the current state of storage for AI and HPC and touches on some of the broad challenges that organizations are facing.

www.hpcwire.com/2025/10/13/t...
The Future of Storage for HPC and AI
The AI arms race has made “GPU” and “gigawatt” household words, and for good reason: What’s happening with the scale of compute is unprecedented. But what about the underlying storage […]
www.hpcwire.com
October 17, 2025 at 3:42 PM
Reposted by François Tessier
thoefler.bsky.social
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…
buff.ly
October 2, 2025 at 5:00 AM
Reposted by François Tessier
astropierre.com
126 millions de milliards d’opérations en virgule flottante par seconde : c’est la capacité du supercalculateur Jean Zay 4 depuis mai 2025.
Une puissance énorme entièrement au service de la science.

Reportage @cnrs.fr :

www.youtube.com/watch?v=8Jdj...
Jean Zay 4 : Accélérer l'IA I Reportage CNRS
YouTube video by CNRS
www.youtube.com
September 26, 2025 at 8:00 AM
Reposted by François Tessier
glennklockwood.com
I wrote up some notes on how to approach I/O and storage benchmarks in RFPs. I normally don't post here about updates to my digital garden, but I think this page is tidy and useful.

www.glennklockwood.com/garden/bench...

#HPC
benchmarking
There are two ways to approach benchmarking. System-level capability: This tells you the best- and worst-case performance you can get out of the system regardless of whatever workload (or mix of workl...
www.glennklockwood.com
July 25, 2025 at 5:33 PM
Reposted by François Tessier
sneuwirth.bsky.social
📢 [FINAL] Call for Papers for the REX-IO 2025 Workshop! 📢

REX-IO 2025 is still accepting submissions (short & full papers) and your high-quality work can make a big difference!

Final deadline: July 25, 2025 11:59PM AoE. 🤩 📜 🦖

More information: sites.google.com/view/rexio/

#HPC #supercomputing
July 21, 2025 at 8:16 PM
Reposted by François Tessier
amjolly.bsky.social
Glenn Lockwood Joins VAST with Eye on Next-Gen AI Infrastructure Strategy
ow.ly/flLQ50Ws29T #HPC #HPCwire
Glenn Lockwood Joins VAST with Eye on Next-Gen AI Infrastructure Strategy
July 18, 2025 — Editor’s Note: Glenn Lockwood, known for his work on Azure’s large-scale AI supercomputers and the Perlmutter supercomputer’s all-NVMe Lustre system, announced earlier this month he wa...
ow.ly
July 18, 2025 at 6:29 PM
hephtaicie.bsky.social
A global power outage during an ESSA workshop is not enough to stop us from sharing our work on I/O and Storage! #IPDPS25
June 4, 2025 at 2:48 PM
Reposted by François Tessier
sneuwirth.bsky.social
📢 [CFP] REX-IO 2025 Workshop at IEEE Cluster Conference 2025!

I'm happy to announce the 5th Workshop on Re-envisioning Extreme-Scale I/O for Emerging Hybrid HPC Workloads!

Submissions are due July 9, 2025 (11:59PM AoE). 🤩 📜 🦖

Further info: sites.google.com/view/rexio/

#HPC #supercomputing
May 20, 2025 at 1:19 PM
Reposted by François Tessier
milenerioux.bsky.social
🆕Comment simuler des phénomènes naturels complexes sur ordinateur pour les rendre compréhensifs et les étudier ?🔬

Au centre #Inria de l’ @univbordeaux.bsky.social : #modélisation, #data et #HPC s’unissent dans un #continuum scientifique puissant.

🔎Sur inria.fr : www.inria.fr/fr/modelisat...
May 19, 2025 at 2:57 PM
Reposted by François Tessier
auposte.fr
Au Poste, c’est vous. Sans vous, c’est silence radio. Aujourd’hui, nous avons besoin de vous pour notre chaine YouTube. Moins de 5000 followers manquent pour franchir un cap, trouver des appuis, tenir la ligne, et remplir les conditions pour demandes d'aides au CNC -> www.youtube.com/@au_poste?su...
May 4, 2025 at 7:01 AM
Reposted by François Tessier
glennklockwood.com
Darshan now supports I/O profiling for (non-MPI) machine learning frameworks, and a new blog post explains how: https://www.mcs.anl.gov/research/projects/darshan/2025/03/11/using-darshan-with-non-mpi-applications-e-g-ai-ml-frameworks/

#HPC
Using Darshan with non-MPI applications (e.g., AI/ML frameworks) – Darshan
www.mcs.anl.gov
March 12, 2025 at 4:34 PM
Reposted by François Tessier
auposte.fr
Opération 50000 abonnés Youtube lancée: il nous manque 12.000 followers pour prétendre à traquer quelques menues aides financières ici ou là. Vous êtes 15000 ici à nous suivre sur BSKY. On serait tellement pas loin... youtube.com/@au_poste Merci de vous abonner à notre canal (gratuit)
March 9, 2025 at 8:00 AM
Reposted by François Tessier
ryohei-kobayashi.bsky.social
🚀 𝐈𝐄𝐄𝐄 𝐂𝐥𝐮𝐬𝐭𝐞𝐫 𝟐𝟎𝟐𝟓 – 𝐂𝐚𝐥𝐥 𝐟𝐨𝐫 𝐏𝐚𝐩𝐞𝐫𝐬! 📢
Submission Deadline: April 25, 2025

📍 Location: Edinburgh, United Kingdom
📅 Dates: September 2-5, 2025

📢 The CFP is open! Submit your paper by April 25, 2025: clustercomp.org/2025/papers/
Welcome!
Website for IEEE Cluster 2025. The latest news is also shown in Twitter/ieeecluster
clustercomp.org
February 8, 2025 at 6:06 AM
hephtaicie.bsky.social
ECLAT, the Extreme Computing Lab for Astronomical Telescopes, now has an English website! eclat-lab.fr/en/

Next week will also be organized the first hackathon at the Paris Observatory. A great opportunity for the #HPC and #Astro communities to work together on scaling up #SKA processing pipelines.
Homepage - ECLAT
Introducing ECLAT, a laboratory of excellence dedicated to high-performance computing (HPC) and artificial intelligence (AI) for astronomical instrumentation. Created as a result of France's contribut...
eclat-lab.fr
January 31, 2025 at 1:53 PM
Reposted by François Tessier
nicolasberrod.bsky.social
La communauté scientifique a massivement migré sur le ciel bleu, la preuve en chiffres : parmi 5 300 répondants à Nature...

• 52,5 % ont quitté X
• 14,9 % utilisent toujours X mais davantage Bsky
• Seuls 13,6 % utilisent toujours davantage X que Bsky

1/3
January 27, 2025 at 7:00 AM
Reposted by François Tessier
molloy.bsky.social
A review of the world scientific literature shows the number of supercomputer articles, growing rapidly after 1980.

An Informal Survey of the Scientific and Social Impact of a Soda Can-Sized Super-Supercomputer

doi: 10.1063/1.4822988
#supercomputer #HPC #retrocomputer #vintagecomputiong #research
Supercomputer articles. A review of the world scientific literature shows the number of supercomputer articles, growing rapidly after 1980. 1981 : 11 85 : 47 89 : 103 90 : 120
January 28, 2025 at 3:21 AM
hephtaicie.bsky.social
We have extended the deadline for ESSA! You still have a bit of time to submit your work on I/O, storage and data analytics at extreme scale, and join us in June in Milano, Italy. #HPC
January 23, 2025 at 5:27 PM
hephtaicie.bsky.social
Bye bye #PizDaint 🇨🇭. It was a real pleasure working with you for a while. #HPC
cscsch.bsky.social CSCS - Swiss National Supercomputing Centre @cscsch.bsky.social · Jan 23
Today we officially shut down our supercomputer Piz Daint 😢 #farewellpizdaint
January 23, 2025 at 2:07 PM
Reposted by François Tessier
nseb.bsky.social
To kick start this account let's repost something I worked on last year at @epcc.bsky.social.
Wind turbine flow simulation done with @xcompact3d.bsky.social by Andrew Mole and render and animation by me using @blender.org
#hpc #blender #sc24 #cfd
January 23, 2025 at 12:51 PM
Reposted by François Tessier
hpcguru.bsky.social
Welcome to #BlueSky, @eurohpc-ju.bsky.social

#HPC #AI
eurohpc-ju.bsky.social EuroHPC Joint Undertaking @eurohpc-ju.bsky.social · Jan 21
Hello EuroHPC Community!👋

As of today, the EuroHPC Joint Undertaking is officially on #BlueSky! 🦋

We look forward to sharing updates and insights with you here.

Follow us to stay informed on #EuroHPC developments! 💻⚡
January 21, 2025 at 1:48 PM
Reposted by François Tessier
mpapka.bsky.social
The Argonne Leadership Computing Facility has released its
2024 Science report (bit.ly/3BTyEHW) highlighting some of the work of our great users. #hpc
www.alcf.anl.gov
January 5, 2025 at 12:02 PM