Explanipedia

Data discovery, analysis and reproducibility in Virtual Research Environments Open

Enrique García García, G. Guerrieri, Rubén Mercado, Michael Ryan Zengel, Georgy Skorobogatov , et al. · 2025

During the ESCAPE project, a pilot analysis facility was developed with a bottom-up approach, in collaboration with all the project partners. As a result, the CERN Virtual Research Environment (VRE) initiative proposes a workspace that fac…

Data discovery, analysis and reproducibility in Virtual Research Environments Open

Enrique García García, G. Guerrieri, Rubén Mercado, Michael Ryan Zengel, Georgy Skorobogatov , et al. · 2025

During the ESCAPE project, a pilot analysis facility was developed with a bottom-up approach, in collaboration with all the project partners. As a result, the CERN Virtual Research Environment (VRE) initiative proposes a workspace that fac…

CHEP 2023: Preface to the Proceedings Open

B. Sawatzky, A. Boehnlein, W.G. Heyes, Raffaella De Vita, X. Espinal Curull , et al. · 2024

The 26 th International Conference on Computing in High Energy and Nuclear Physics (CHEP), organized by Jefferson Lab, took place in Norfolk, Virginia from 5–11 May 2023. The conference attracted 581 registered participants from 28 differe…

The Virtual Research Environment: towards a comprehensive analysis platform Open

Elena Gazzarrini, Enrique Alonso García, Domenic Gosein, Alba Vendrell Moya, Agisilaos Kounelis , et al. · 2023

The Virtual Research Environment is an analysis platform developed at CERN serving the needs of scientific communities involved in European Projects. Its scope is to facilitate the development of end-to-end physics workflows, providing res…

ESCAPE - addressing Open Science challenges Open

M. Allen, G. Lamanna, X. Espinal Curull, Kay Graf, Michiel van Haarlem , et al. · 2022

ESCAPE (European Science Cluster of Astronomy & Particle physics ESFRI research infrastructures) is an EU H2020 project that addresses the Open Science challenges shared by the astrophysics and and accelerator-based physics and nuclear phy…

Prototype of the Russian Scientific Data Lake Open

Aleksandr Alekseev, X. Espinal Curull, S. Jézéquel, Andrey Kiryanov, A. Klimentov , et al. · 2021

The High Luminosity phase of the LHC, which aims for a tenfold increase in the luminosity of proton-proton collisions is expected to start operation in eight years. An unprecedented scientific data volume at the multiexabyte scale will be …

Federated data storage evolution in HENP: data lakes and beyond Open

A. Zarochentsev, X. Espinal Curull, Andrey Kiryanov, Jaroslava Schovancová · 2020

Storage has been identified as the main challenge for the future distributed computing infrastructures: Particle Physics (HL-LHC, DUNE, Belle-II), Astrophysics and Cosmology (SKA, LSST). In particular, the High Luminosity LHC (HL-LHC) will…

ESCAPE prototypes a data infrastructure for open science Open

Rosie Bolton, S. Campana, Andrea Ceccanti, X. Espinal Curull, Aristeidis Fkiaras , et al. · 2020

The European-funded ESCAPE project will prototype a shared solution to computing challenges in the context of the European Open Science Cloud. It targets Astronomy and Particle Physics facilities and research infrastructures and focuses on…

The Quest to solve the HL-LHC data access puzzle Open

X. Espinal Curull, S. Jézéquel, Michael Schulz, A. Sciabà, I. Vukotić , et al. · 2020

HL-LHC will confront the WLCG community with enormous data storage, management and access challenges. These are as much technical as economical. In the WLCG-DOMA Access working group, members of the experiments and site managers have explo…

Russian academic institutes participation in WLCG DataLake project Open

Andrey Kiryanov, A. Klimentov, X. Espinal Curull, A. Zarochentsev · 2019

WLCG DataLake R&D; project aims at exploring an evolution of distributed storage while bearing in mind very high demands of HL-LHC era. Its primary objective is to optimize hardware usage and operational costs of a storage system deployed …

IPv6 in production: its deployment and usage in WLCG Open

Marian Babik, M. J. Bly, Tim Chown, J. Chudoba, Catalin Condurache , et al. · 2019

The fraction of general internet traffic carried over IPv6 continues to grow rapidly. The transition of WLCG central and storage services to dual-stack IPv4/IPv6 is progressing well, thus enabling the use of IPv6-only CPU resources as agre…

Providing large-scale disk storage at CERN Open

Hervé Rousseau, Belinda Chan Kwok Cheong, Cristian I. Contescu, X. Espinal Curull, Jan Iven , et al. · 2019

The CERN IT Storage group operates multiple distributed storage systems and is responsible for the support of the infrastructure to accommodate all CERN storage requirements, from the physics data generated by LHC and non-LHC experiments t…

Architecture and prototype of a WLCG data lake for HL-LHC Open

Ian Bird, S. Campana, Maria Girone, X. Espinal Curull, G.J. McCance , et al. · 2019

The computing strategy document for HL-LHC identifies storage as one of the main WLCG challenges in one decade from now. In the naive assumption of applying today's computing model, the ATLAS and CMS experiments will need one order of magn…

The LHC Tier-1 at PIC: ten years of operations Open

J. Flix, Esther Acción, V Acín, Carles Acosta‐Silva, Gerard Bernabeu , et al. · 2017

This paper summarizes ten years of operational experience of the WLCG Tier-1 computer centre at Port d’Informació Científica (PIC), which serves the ATLAS, CMS and LHCb experiments. The centre, located in Barcelona (Spain), has supported a…

From Physics to industry: EOS outside HEP Open

X. Espinal Curull, M. Lamanna · 2017

In the competitive market for large-scale storage solutions the current main disk storage system at CERN EOS has been showing its excellence in the multi-Petabyte high-concurrency regime. It has also shown a disruptive potential in powerin…

CERN data services for LHC computing Open

X. Espinal Curull, Enrico Bocchi, Belinda Chan, A Fiorot, Jan Iven , et al. · 2017

Dependability, resilience, adaptability and efficiency. Growing requirements require tailoring storage services and novel solutions. Unprecedented volumes of data coming from the broad number of experiments at CERN need to be quickly avail…

Disk storage at CERN Open

Luca Mascetti, E. Cano, Belinda Chan, X. Espinal Curull, A Fiorot , et al. · 2015

CERN IT DSS operates the main storage resources for data taking and physics analysis mainly via three system: AFS, CASTOR and EOS. The total usable space available on disk for users is about 100 PB (with relative ratios 1:20:120). EOS acti…

Latest evolution of EOS filesystem Open

G Adde, Belinda Chan, Dirk Duellmann, X. Espinal Curull, A Fiorot , et al. · 2015

EOS is an open source distributed filesystem developed and used mainly at CERN. It provides low latency, high availability, strong authentication, multiple replication schemas as well as multiple access protocols and features. Deployment a…

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