Optimising costs in WLCG operations

21st International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Pradillo, Marí'A Alandes^1 ; Dimou, Maria^1 ; Flix, Josep^2,3 ; Forti, Alessandra^4 ; Sciabà, Andrea^1

European Organization for Nuclear Research, Genè've 23

CH-1211, Switzerland^1

Port d'Informació' cientí'Fica, Bellaterra

E-08193, Spain^2

Centro de Investigaciones energé'Ticas, Medioambientales y tecnoló'Gicas, CIEMAT, Madrid, Spain^3

University of Manchester, Oxford Road, Manchester

M13 9PL, United Kingdom^4

关键词: Computing infrastructures;    Computing model;    Computing resource;    Distributed teams;    LHC computing grids;    Petabytes;    Storage resources;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/3/032025/pdf
DOI  :  10.1088/1742-6596/664/3/032025

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The Worldwide LHC Computing Grid project (WLCG) provides the computing and storage resources required by the LHC collaborations to store, process and analyse the 50 Petabytes of data annually generated by the LHC. The WLCG operations are coordinated by a distributed team of managers and experts and performed by people at all participating sites and from all the experiments. Several improvements in the WLCG infrastructure have been implemented during the first long LHC shutdown to prepare for the increasing needs of the experiments during Run2 and beyond. However, constraints in funding will affect not only the computing resources but also the available effort for operations. This paper presents the results of a detailed investigation on the allocation of the effort in the different areas of WLCG operations, identifies the most important sources of inefficiency and proposes viable strategies for optimising the operational cost, taking into account the current trends in the evolution of the computing infrastructure and the computing models of the experiments.