The CMS TierO goes Cloud and Grid for LHC Run 2

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

物理学;计算机科学

Hufnagel, Dirk^1

Fermilab, P.O. Box 500, Batavia

IL

60510-5011, United States^1

关键词: Big changes;    Cloud-based;    Computing system;    Distributed systems;    Grid resource;    Multithreaded;    Resource requirements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/3/032014/pdf
DOI  :  10.1088/1742-6596/664/3/032014

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In 2015, CMS will embark on a new era of collecting LHC collisions at unprecedented rates and complexity. This will put a tremendous stress on our computing systems. Prompt Processing of the raw data by the Tier-0 infrastructure will no longer be constrained to CERN alone due to the significantly increased resource requirements. In LHC Run 2, we will need to operate it as a distributed system utilizing both the CERN Cloud-based Agile Infrastructure and a significant fraction of the CMS Tier-1 Grid resources. In another big change for LHC Run 2, we will process all data using the multi-threaded framework to deal with the increased event complexity and to ensure efficient use of the resources. This contribution will cover the evolution of the Tier-0 infrastructure and present scale testing results and experiences from the first data taking in 2015.