Caching technologies for Tier-2 sites: a UK perspective

Skipsey, S. C. , Brew, C., Forti, A., Traynor, D., Li, T., Boutcher, A., Roy, G., Stewart, G. and Britton, D. (2019) Caching technologies for Tier-2 sites: a UK perspective. EPJ Web of Conferences, 214, 04002. (doi: 10.1051/epjconf/201921404002)

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Pressures from both WLCG VOs and externalities have led to a desire to "simplify" data access and handling for Tier-2 resources across the Grid. This has mostly been imagined in terms of reducing book-keeping for VOs, and total replicas needed across sites. One common direction of motion is to increasing the amount of remote-access to data for jobs, which is also seen as enabling the development of administratively-cheaper Tier-2 subcat-egories, reducing manpower and equipment costs. Caching technologies are often seen as a "cheap" way to ameliorate the increased latency (and decreased bandwidth) introduced by ubiquitous remote-access approaches, but the usefulness of caches is strongly dependant on the reuse of the data thus cached. We report on work done in the UK at four GridPP Tier-2 sites - ECDF, Glasgow, RALPP and Durham - to investigate the suitability of transparent caching via the recently-rebranded XCache (Xrootd Proxy Cache) for both ATLAS and CMS workloads, and to support workloads by other caching approaches (such as the ARC CE Cache).

Item Type:Articles
Additional Information:Paper presented at 23rd International Conference on Computing in High Energy and Nuclear Physics (CHEP 2018), Sofia, Bulgaria, 09-13 Jul 2018.
Glasgow Author(s) Enlighten ID:Stewart, Dr Gordon and Roy, Dr Gareth and Britton, Professor David and Skipsey, Dr Samuel
Authors: Skipsey, S. C., Brew, C., Forti, A., Traynor, D., Li, T., Boutcher, A., Roy, G., Stewart, G., and Britton, D.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:EPJ Web of Conferences
Journal Abbr.:EPJ Web Conf.
Publisher:EDP Sciences
ISSN (Online):2100-014X
Published Online:17 September 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in EPJ Web of Conferences 214: 04002
Publisher Policy:Reproduced under a Creative Commons License

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