The Diverse use of Clouds by CMS

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

物理学;计算机科学

Andronis, Anastasios^1,3 ; Bauer, Daniela^2 ; Chaze, Olivier^3 ; Colling, David^2 ; Dobson, Marc^3 ; Fayer, Simon^2 ; Girone, Maria^3 ; Grandi, Claudio^4 ; Huffman, Adam^2 ; Hufnagel, Dirk^5 ; Khan, Farrukh Aftab^6 ; Lahiff, Andrew^7 ; McCrae, Alison^3 ; Rand, Duncan^2 ; Sgaravatto, Massimo^8 ; Tiradani, Anthony^5 ; Zhang, Xiaomei^9

University of Ioannina, Greece^1

Blackett Laboratory, Imperial College London, London

SW7 2AZ, United Kingdom^2

CERN, Geneva 23

CH-1211, Switzerland^3

INFN-Bologna, Viale Berti-Pichat 6/2, Bologna

40127, Italy^4

Fermilab, Batavia

IL

60510-5011, United States^5

National Centre for Physics, Islamabad

45320, Pakistan^6

Rutherford Appleton Laboratory, Harwell Oxford Didcot

OX11 0QX, United Kingdom^7

INFN-Padova, Via Marzolo 8, Padova

35131, Italy^8

Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Lu, Shijingshan District Beijing

100049, China^9

关键词: Cloud infrastructures;    Compute resources;    High-level triggers;    Trigger systems;    User analysis;    Work-flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/2/022012/pdf
DOI  :  10.1088/1742-6596/664/2/022012

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The resources CMS is using are increasingly being offered as clouds. In Run 2 of the LHC the majority of CMS CERN resources, both in Meyrin and at the Wigner Computing Centre, will be presented as cloud resources on which CMS will have to build its own infrastructure. This infrastructure will need to run all of the CMS workflows including: Tier 0, production and user analysis. In addition, the CMS High Level Trigger will provide a compute resource comparable in scale to the total offered by the CMS Tier 1 sites, when it is not running as part of the trigger system. During these periods a cloud infrastructure will be overlaid on this resource, making it accessible for general CMS use. Finally, CMS is starting to utilise cloud resources being offered by individual institutes and is gaining experience to facilitate the use of opportunistically available cloud resources. We present a snap shot of this infrastructure and its operation at the time of the CHEP2015 conference.