-
Juan Manuel Guijarro (CERN)Applied AI in Computing Center Infrastructures
We are developing a new Machine Learning (ML) service at CERN to support the use of Large Language Models (LLMs) and Agentic AI. Our goal is to provide a reliable and secure foundation for researchers and developers. In this presentation, we will describe the architecture and plans for this new service. It will include several key components: an LLM Proxy that works with OpenAI-compatible...
Go to contribution page -
Mattias Wadenstein (University of Umeå (SE))Networking & Security
Universities and research institutes have been early adopters of IPv4, which
have served scientific research infrastructure well in the past. But now the
time has come to let go of the legacy protocol with awkward limits, and phase
it out in favour of IPv6.The World-wide LHC Computing Grid (WLCG) is half-way through the transition
Go to contribution page
from IPv4 to IPv6, with almost all services now being... -
Luca Atzori (CERN)Techwatch (Topical Session)
As CERN prepares its central IT Data Centres for the High‑Luminosity LHC era (Run 4), the compute and storage infrastructure operated by CERN IT must evolve to meet significantly higher demands in throughput, capacity, and efficiency while remaining within strict constraints on budget, power consumption, and operational simplicity. With LS3 expected to begin in July 2026 and the HL‑LHC start...
Go to contribution page -
Vladimir Bahyl (CERN)Site Reports
News from CERN since the last HEPiX workshop. This talk gives a general update from services in the CERN IT department.
Go to contribution page -
Dr Pau Tallada-Crespí (PIC-CIEMAT)Storage & data management
The adoption of Open Science in data-intensive fields such as astronomy and cosmology requires infrastructures capable of managing, distributing, and enabling the reproducible reuse of massive datasets across geographically distributed communities. Addressing these challenges, CosmoHub is a high-performance open science data platform developed at the Port d’Informació Científica (PIC) to...
Go to contribution page -
Jiri Chudoba (Czech Academy of Sciences (CZ))Networking & Security
The Czech WLCG Tier-2 consistently meets its computing and storage commitments to the LHC experiments through a geographically distributed infrastructure. CZ-Tier-2 resources are spread across three sites, connected by high-bandwidth links operated by the Czech NREN, CESNET. Additionally, substantial CPU resources from the Czech national supercomputing center IT4I are incorporated into WLCG...
Go to contribution page -
qi luo (中科院高能物理所计算中心)Software and Services for Operation
The Institute of High Energy Physics (IHEP), Chinese Academy of Sciences,is a leading research institution in China dedicated to high-energy physics, advanced accelerator technology development, and nuclear technology applications. IHEP undertakes several major national science infrastructure projects, the most prominent of which is the High Energy Photon Source (HEPS). With an electron beam...
Go to contribution page -
Andreas Haupt (Deutsches Elektronen-Synchrotron (DE))Site Reports
News from the lab
Go to contribution page -
QI XU (National Space Science Center, Chinese Academy of Sciences), Prof. Ziming zou (National Space Science Center, Chinese Academy of Sciences)Applied AI in Computing Center Infrastructures
The growing trend of AI for Science (AI4S) has placed new demands on scientific data management and application. As a bridge connecting raw data to data-driven applications, a data repository is expected to enhance its data service capabilities to facilitate AI4S applications. This presentation introduces the open research platform being developed by the Chinese National Space Science Data...
Go to contribution page -
Joao Antonio Tomasio Pina (Laboratory of Instrumentation and Experimental Particle Physics (PT))Software and Services for Operation
The Unified Middleware Distribution (UMD) is a software distribution provided by EGI that integrates a collection of software components (middleware) selected from various technology providers for deployment on the EGI/WLCG production infrastructure. The software repository for UMD (repository.egi.eu) is developed, maintained, and operated by LIP under contract with EGI.
The repositories...
Go to contribution page -
Ruben Domingo Gaspar Aparicio (CERN)Miscellaneous
As part of CERN’s transcription and translation service, high-quality captions were produced for approximately 40,000 hours of media using models trained on CERN-specific/HEP terminology, covering CERN’s official languages. Beyond the immediate accessibility benefits of captioning, the service also explored ways to improve the discoverability of media content. Two proof-of-concept systems were...
Go to contribution page -
Marc Santamaria Riba (INSTITUT DE FÍSICA D´ALTES ENERGIES)Networking & Security
The Port d’Informació Científica (PIC) serves as a critical data and computing hub for numerous scientific experiments, with the vast majority of its resources dedicated to the Worldwide LHC Computing Grid (WLCG). While standard LHC grid operations rely heavily on traditional batch submissions, the growing demand for interactive, Tier-3 analysis facilities requires a shift toward scalable,...
Go to contribution page -
Zhechka Toteva (CERN)Software and Services for Operation
CERN's computing infrastructure manages thousands of services across a complex distributed environment, requiring robust secret management for application credentials, root accounts, certificates, and service tokens. This talk explores CERN's transition from puppet-oriented, in-house secrets management solutions to HashiCorp Vault as a centralized, enterprise-level secret management...
Go to contribution page -
39. Fujifilm’s Evolution of Magnetic Tape: BaFe and SrFe Innovations for Next-Generation HPC StorageMs Elisabeth Gameiro (FUJIFILM Recording Media France)Techwatch (Topical Session)
High-Performance Computing (HPC) has become a critical tool in scientific research, engineering, AI training, and more. Some of the main challenges of HPC in data storage are handling massive data volumes, ensuring long-term data integrity and security, reducing the floor space and the carbon footprint.
HPC applications generate petabytes of data, requiring high-capacity storage solutions....
Go to contribution page -
Matthias Jochen SchnepfTechwatch (Topical Session)
GPUs are energy-efficient hardware for several High Energy Physics (HEP) applications.
Go to contribution page
However, servers with GPUs are expensive and special in cooling, operation, and software support compared to CPU-only servers.
We present what we have learned during the operations of GPU servers regarding these aspects at KIT, as well as some experiences from other sites. -
Dr Max Kühn (Karlsruhe Institute of Technology)Site Reports
We provide an overview of current activities, topics and challenges around the GridKa Tier-1 centre. Key experiences include very high capacity workernodes, the physical relocation of our entire tape library between campuses, and the transition of the entire compute centre to a new network layout. We also dive into current woes around Grid-size online storage and configuration management.
Go to contribution page -
Domenico Giordano (CERN)Computing & Batch Services
The HEPiX Benchmarking Working Group develops and maintains benchmarking tools to measure computing resources across the Worldwide LHC Computing Grid (WLCG). Since the adoption of HEPScore23 in April 2023, the WG has been enhancing the benchmark suite to address evolving community needs. Currently, the WG is focused on two main developments: extending the benchmark suite with modules to...
Go to contribution page -
David Kelsey (Science and Technology Facilities Council STFC (GB))Networking & Security
The HEPiX IPv6 Working Group has been encouraging the deployment and use of IPv6 in WLCG for many years. At the last HEPiX meeting in China we reported that more than 70% of all WLCG sites have worker nodes and compute services that are IPv6-capable. That campaign continues. We also presented news that the USA Tier1 sites had successfully removed IPv4 peering from their LHCOPN connections. We...
Go to contribution page -
Mr Andrea Chierici (Universita e INFN, Bologna (IT)), Dr Andrea Sciabà (CERN)Techwatch (Topical Session)
The Technology Watch Working Group, established in 2018 to take a close look at the evolution of the technology relevant to HEP computing, has resumed its activities after a long pause. In this report, we provide an overview of the hardware technology landscape and some recent developments, highlighting the impact on the HEP computing community, with a special focus on resource price evolution.
Go to contribution page -
Hao Hu (Institute of High Energy of Physics)Storage & data management
The High Energy cosmic Radiation Detector (HERD) is a major international space astronomy and particle astrophysics experiment planned for installation on the Chinese Space Station (CSS) around 2027. Its primary scientific objectives include precise measurement of high-energy cosmic rays up to the PeV range, indirect detection of dark matter, and observation of high-energy gamma rays.
Go to contribution page
It is... -
Mr Xiaowei Jiang (IHEP（中国科学院高能物理研究所）)Site Reports
To introduce the recent updates of IHEP site.
Go to contribution page -
Jingyan Shi (IHEP)Software and Services for Operation
Joblens, a lightweight and observability collector designed to achieve fine-grained monitoring of cluster jobs. Leveraging eBPF-based kernel instrumentation, Joblens enables dynamic tracking of process creation and system calls with zero overhead and no need for kernel modifications. Its modular and highly configurable plugin system, built on an asynchronous double-buffer pipeline, exports...
Go to contribution page -
Konomi Omori (KEK)Software and Services for Operation
KEK has deployed an Identity Provider (IdP) and joined both GakuNin and eduGAIN to enable federated authentication with domestic and international institutions. This presentation describes the technical architecture and current status of the IdP, and outlines plans to extend this federated authentication infrastructure across multiple services provided by the KEK Computing Research Center. It...
Go to contribution page -
Jorge Humberto Lucio Oliveira GomesSite Reports
LIP and CNCA sites report to HEPiX Spring 2026.
Go to contribution page -
Bart van der Wal (NIkhef)Cloud Technologies, Virtualization & Orchestration, Operating Systems
After Vmware was bought out by Broadcom the price of the products increased and the service decreased. Nikhef decided to move our Vmware cluster to XPC-ng with XOA.
Go to contribution page
I will be talking about why we decided to do this, but most of the talks will be about the migration and our experiences of the last year. -
QI XU (National Space Science Center, Chinese Academy of Sciences)Storage & data management
With numbers of space science missions have been launched domestically in recent years, observation data of space science are exploding in China, the long-term preservation of data have become key challenges in the management of scientific data.
Go to contribution page
The Chinese National Space Science Data Center (NSSDC) is responsible for the archiving, curation, long-term preservation, and open sharing of space... -
Mattias Wadenstein (University of Umeå (SE))Site Reports
Site report from the Nordic Tier-1
Go to contribution page -
Jose Flix Molina (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))Site Reports
PIC report to HEPIX Spring 2026.
Go to contribution page -
Natalia Diana Szczepanek (CERN)Environmental sustainability, business continuity, and Facility improvement
Monitoring power consumption at the level of grid job slots remains a missing component of current Workload Management Systems for HEP experiments. While individual computing centres can monitor power consumption locally, maintaining a consistent view across heterogeneous clusters and re-benchmarking systems after each configuration change is time-consuming and often impractical for...
Go to contribution page -
Christoph BeyerComputing & Batch Services
The yearly autumn, european HTCondor workshop is wrapped up and some of the highlights are presented in more detail
Go to contribution page -
Vladimir Bahyl (CERN)Techwatch (Topical Session)
This talk is a short update on the recent evolution of the tape technology from the CERN user perspective.
Go to contribution page -
Jan HartmannEnvironmental sustainability, business continuity, and Facility improvement
I have been working at DESY for a bit over a year as part of Research Facilities 2.0 (RF2.0), with the aim of making the compute infrastructure more ressource efficient.
In this talk I will present how we rolled out benchmarks to our clusters, how the results helped us finding misconfigurations, and some of the configuration changes we made to our infrastructure.
Go to contribution page
Also, i will present our... -
Tristan SuerinkTechwatch (Topical Session)
With CPU’s and Accelerators that want to have more and more watt compared with the previous generations, cooling will become getting harder to keep future clusters running efficiently.
Go to contribution page
At every conference, you’ll see more companies telling you that they have the real golden egg for this problem. The big question is, do they really have that golden egg for you?
We will show the different type... -
Tristan SuerinkTechwatch (Topical Session)
The problem of efficient and effective cooling has been haunting us for nearly a decade: since 2018 Nikhef has been aware of the issue and has explored several possibilities: ones that fir our environment, use the data centre infrastructure we have, and the infrastructure we have for getting rid of residual heat.
Go to contribution page
But what is the best technology out there today? And which technologies that... -
Horst Severini (University of Oklahoma (US))Site Reports
Updates on the US ATLAS SouthWest Tier2 Center since the last HEPiX we attended.
Go to contribution page -
Panos Paparrigopoulos (CERN)Software and Services for Operation
As WLCG prepares for the HL-LHC era, Operations Coordination continues to steer the infrastructure through major technical transitions while ensuring stable Run 3 operations.
Go to contribution page
The current focus is on four key cross-cutting projects: the migration to token-based authentication and authorization, the evolution and sustainability of WLCG accounting, the implementation of XRootD monitoring, and... -
Oxana Smirnova (Lund University)Techwatch (Topical Session)
The WLCG Workshop on Heterogeneous Architectures (CERN, Dec 2025) reviewed the readiness of GPU‑enabled workflows across LHC experiments and the requirements for heterogeneous resources ahead of Run 4. While GPU acceleration is advancing in simulation, reconstruction and ML workflows, experiments are not yet ready to request formal GPU pledges, pending further benchmarking, workflow...
Go to contribution page
Choose timezone
Your profile timezone: