28th Conference on Computing in High Energy and Nuclear Physics (CHEP 2026)

Performance optimisations for a cloud-based grid site

26 May 2026, 14:21

18m

Chulalongkorn University

Oral Presentation Track 7 - Computing infrastructure and sustainability Track 7 - Computing infrastructure and sustainability

Speaker

Dr Jonathan Woithe (Adelaide University (AU))

Description

AU-Melbourne is the first grid computing site to be implemented entirely in the cloud. Virtual machines are managed with OpenStack and Cloud Scheduler v2 (CSv2) while an S3 object store functions as the storage backend. The site has been in operation for over 12 months, providing Compute Element (CE) and Storage Element (SE) resources for the ATLAS and Belle II experiments. Monitoring of the site over this period highlighted several performance deficiencies which needed to be addressed, particularly in the SE component. This presentation will discuss the issues identified, how they were investigated, solutions adopted to resolve the underlying problems, and the optimisation of the grid site's performance.