Speaker
Description
The WLCG infrastructure is evolving to support the HL-LHC, requiring greater capacity and increasingly diverse resource types, which challenges the existing accounting system to become more flexible in handling heterogeneous resources such as GPUs and in incorporating new metrics, including environmental and sustainability indicators. The current system relies on outdated and overly complex technologies, motivating a full redesign. Other communities relying on the system through EGI face similar challenges, and the enhanced accounting system is therefore intended to serve a broad set of distributed research infrastructures beyond the HL-LHC. The new architecture is based on tools such as the WLCG Accounting Utility (WAU) and the Accounting Data Handling Toolbox for Opportunistic Resources (AUDITOR), introducing a modular data model, modern scalable repositories, and streamlined data flows supporting both push- and pull-based publication. Core features include end-to-end validation, cross-checks with experiment accounting systems, and flexible enrichment using WLCG topology. Developed collaboratively by CERN, STFC, and the University of Freiburg, the redesigned system will support both WLCG and non-WLCG communities.