Tessera

François Tessier

@hephtaicie.bsky.social

Research Scientist at Inria Rennes 🇫🇷. #HPC, I/O, Storage. Recent focus on #SKA 🔭. French-Swiss, former ANL 🇺🇸 and @cscsch 🇨🇭. Father of one.

75 Posts362 Follower 545 Folgt

Brice Goglin @bgoglin.bsky.social · 3mo ago

#hwloc 2.14.0 is released. Big improvements for ARM hybrid CPU detection, and AMD GPU management. And many other fixes. #hpc #hardware #locality sympa.inria.fr/sympa/arc/hw...

SNCS-FSU Inria @sncs-inria.bsky.social · 6mo ago

L'Inria essaie de défendre le fait que la ZRR ne va pas impacter les libertés académiques et le fait de la pire manière possible : en disant que de toute façon les précaires n'y auraient pas le droit (aux libertés académiques) parce qu'elles ne sont pas en poste....

Est-ce que le dispositif a un impact sur l'autonomie de la démarche scientifique et la libre circulation des idées ?

L'autonomie de la démarche scientifique et la libre circulation des idées garantit aux chercheurs d'effectuer des travaux de recherche, de publier et d’exprimer des idées sans subir de pression, de censure ou de contrainte extérieure, à condition de respecter l’éthique, l’objectivité scientifiques et plus globalement les lois et règlements en vigueur.

Ces garanties protègent les chercheurs déjà recrutés ou investis officiellement de fonctions de recherche. Elles ne sont pas accordées aux candidats à un poste.

L’exclusion d’un candidat avant sa nomination ne constitue donc pas une atteinte à l'autonomie de la démarche scientifique, à la libre circulation des idées ou à la liberté académique, par construction.

SNCS-FSU Inria @sncs-inria.bsky.social · 6mo ago

C'est officiel, cette année il y aura donc plus de 240 candidatures au concours Chargé·e de Recherche Inria pour seulement 6 postes (Plus d'une vingtaine de postes avant 2017). Une catastrophe. Colère pour ces jeunes chercheur·euses.

Sarah Neuwirth 🇪🇺👩🏼‍💻👩🏻‍🏫😄@sneuwirth.bsky.social · 7mo ago

📢 ISPDC 2026: Call for Papers, Posters, and Talks! 📢 I am happy to announce the 25th International Symposium on Parallel and Distributed Computing (ISPDC 2026) (July 1-3, Hamburg, Germany)! Submissions are due March 23, 2026 (AoE). Further info: indico.desy.de/e/ispdc2026 #HPC #supercomputing

François Tessier @hephtaicie.bsky.social · 9mo ago

📢 Call for Papers: 7th International Workshop on Extreme-Scale #Storage and #Analysis (ESSA 2026), held in conjunction with IPDPS (New Orleans, May 2026)! More info here: sites.google.com/view/essa-2026 #HPC #Cloud #IPDPS

7th Workshop on Extreme-Scale Storage and Analysis
Held in conjunction with IPDPS 2026, New Orleans, LA, USA

Paper submission deadline: January 23, 2026
Acceptance notification: February 25, 2026
Camera-ready deadline: March 6, 2026
Workshop date: May 26, 2026

Animation Obsessive @ani-obsessive.bsky.social · 10mo ago

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...

SNCS-FSU Inria @sncs-inria.bsky.social · 9mo ago

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...

ccomptes.fr

Mark A. Hanson @hansonmark.bsky.social · 10mo ago

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.

Suhaib Khan @suhaibkhan.bsky.social · 11mo ago

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 […]

hpcwire.com

Torsten Hoefler 🇨🇭@thoefler.bsky.social · 11mo ago

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

Astropierre @astropierre.com · 11mo ago

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

youtube.com

Glenn K. Lockwood @glennklockwood.com · last yr.

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...

glennklockwood.com

Sarah Neuwirth 🇪🇺👩🏼‍💻👩🏻‍🏫😄@sneuwirth.bsky.social · last yr.

📢 [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

Drew Jolly @amjolly.bsky.social · last yr.

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

François Tessier @hephtaicie.bsky.social · last yr.

A global power outage during an ESSA workshop is not enough to stop us from sharing our work on I/O and Storage! #IPDPS25

Sarah Neuwirth 🇪🇺👩🏼‍💻👩🏻‍🏫😄@sneuwirth.bsky.social · last yr.

📢 [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

Milène Testa-Rioux @milenerioux.bsky.social · last yr.

🆕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...

Au Poste @auposte.media · last yr.

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...

Glenn K. Lockwood @glennklockwood.com · last yr.

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

mcs.anl.gov

Au Poste @auposte.media · last yr.

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)

Ryohei Kobayashi @ryohei-kobayashi.bsky.social · 2y ago

🚀 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

François Tessier @hephtaicie.bsky.social · 2y ago

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

Nicolas Berrod @nicolasberrod.bsky.social · 2y ago

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

Stéphane @molloy.bsky.social · 2y ago

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

François Tessier @hephtaicie.bsky.social · 2y ago

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

François Tessier@hephtaicie.bsky.social · 2y ago

Lots of newcomers to the #HPC community on Bluesky! I am therefore taking this opportunity to repost our CFP for the ESSA workshop which will be organized jointly with IPDPS next June. ESSA is dedicated to I/O challenges, storage management and analysis of large volumes of data.

François Tessier @hephtaicie.bsky.social · 2y ago

Bye bye #PizDaint 🇨🇭. It was a real pleasure working with you for a while. #HPC

CSCS - Swiss National Supercomputing Centre@cscsch.bsky.social · 2y ago

Today we officially shut down our supercomputer Piz Daint 😢 #farewellpizdaint

seb(astien)@nseb.bsky.social · 2y ago

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

HPC Guru @hpcguru.bsky.social · 2y ago

Welcome to #BlueSky, @eurohpc-ju.bsky.social #HPC #AI

EuroHPC Joint Undertaking@eurohpc-ju.bsky.social · 2y ago

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! 💻⚡

Michael Papka @mpapka.bsky.social · 2y ago

The Argonne Leadership Computing Facility has released its 2024 Science report (bit.ly/3BTyEHW) highlighting some of the work of our great users. #hpc

alcf.anl.gov