CMS experience of running glideinWMS in High Availability mode

[摘要] The CMS experiment at the Large Hadron Collider is relying on the HTCondor-based glideinWMS batch system to handle most of its distributed computing needs. In order to minimize the risk of disruptions due to software and hardware problems, and also to simplify the maintenance procedures, CMS has set up its glideinWMS instance to use most of the attainable High Availability (HA) features. The setup involves running services distributed over multiple nodes, which in turn are located in several physical locations, including Geneva (Switzerland), Chicago (Illinois, USA) and San Diego (California, USA). This paper describes the setup used by CMS, the HA limits of this setup, as well as a description of the actual operational experience spanning many months.

[发布机构] University of California San Diego, 9500 Gilman Dr, San Diego; CA; 92093, United States^1;INFN Sezione di Trieste, Via Valerio 2, Trieste; 34127, Italy^2;Fermi National Accelerator Laboratory, PO Box 500, Batavia; IL; 60510, United States^3;Karlsruhe Institute of Technology, Wolfgang-Gaede-Str. 1, Karlsruhe; 76131, Germany^4;University of Wisconsin-Madison, 1150 University Ave, Madison; WI; 53706, United States^5;INFN Sezione di Padova, Via Marzolo 8, Padova; 35131, Italy^6

[效力级别] 计算机科学 [学科分类] 计算机科学（综合）

[关键词] California , USA;High availability;Large Hadron Collider;Maintenance procedures;Multiple nodes;Operational experience;Physical locations;Software and hardwares