Speakers
Description
The KM3NeT Collaboration is building a large-scale neutrino research infrastructure in the Mediterranean Sea, comprising the ARCA detector, in Italy, and the ORCA detector in France. Within this framework, INFN plays a central role in the computing and data management strategy supporting both detectors.
The Tier-0 facilities, hosted at the detector sites (Portopalo di Capo Passero for ARCA and La Seyne sur Mer for ORCA), manage the first stage of data handling, including data reception from the shore stations, integrity checks, noise filtering and initial event reconstruction. As detector construction progresses and data rates steadily increases, Tier-0 represents a critical component for ensuring smooth operations and allowing low-latency access to high-quality data.
Filtered data are subsequently transferred to Tier-1 centres, for offline data-processing. These sites, in CC-IN2P3 (Lyon) and INFN CNAF (Bologna), provide dedicated disk and tape storage alongside batch computing facilities. To ensure a scalable and homogeneous environment, the collaboration is currently integrating additional services, including INFN IAM for identity management and CVMFS for software distribution.
Currently, KM3NeT is transitioning from a predominantly site-centric computing model to a distributed infrastructure. The adoption of Rucio as the file catalogue and data management system enables structured data flows between Tier-0 and Tier-1 sites. KM3NeT is currently consolidating its participation in EGI and evaluating future integration within the WLCG ecosystem once the transition to distributed computing reaches operational maturity.
This contribution outlines the INFN computing strategy for KM3NeT, details the deployment of Tier-0 and Tier-1 resources, and presents the roadmap towards a fully distributed and scalable infrastructure aligned with international standards.