Using S3 cloud storage with ROOT and CvmFS

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

物理学;计算机科学

Arsuaga-Ríos, María^1 ; Heikkilä, Seppo S.^1 ; Duellmann, Dirk^1 ; Meusel, René^1 ; Blomer, Jakob^1 ; Couturier, Ben^1

CERN (European Organization for Nuclear Research), Geneva, Switzerland^1

关键词: Analysis frameworks;    Cloud storages;    Complex data;    Individual objects;    Software applications;    Software stacks;    Storage requirements;    Storage systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/664/2/022001/pdf
DOI  :  10.1088/1742-6596/664/2/022001

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Amazon S3 is a widely adopted web API for scalable cloud storage that could also fulfill storage requirements of the high-energy physics community. CERN has been evaluating this option using some key HEP applications such as ROOT and the CernVM filesystem (CvmFS) with S3 back-ends. In this contribution we present an evaluation of two versions of the Huawei UDS storage system stressed with a large number of clients executing HEP software applications. The performance of concurrently storing individual objects is presented alongside with more complex data access patterns as produced by the ROOT data analysis framework. Both Huawei UDS generations show a successful scalability by supporting multiple byte-range requests in contrast with Amazon S3 or Ceph which do not support these commonly used HEP operations. We further report the S3 integration with recent CvmFS versions and summarize the experience with CvmFS/S3 for publishing daily releases of the full LHCb experiment software stack.