JAliEn _ A new interface between the AliEn jobs and the central services

15th International Workshop on Advanced Computing and Analysis Techniques in Physics Research

物理学;计算机科学

Grigoras, A.G.^1 ; Grigoras, C.^1 ; Pedreira, M.M.^1 ; Saiz, P.^1 ; Schreiner, S.^2

CERN, 1211 Geneva, Switzerland^1

Technische Universität Darmstadt, Hochschulstraße 10, 64289 Darmstadt, Germany^2

关键词: CPU cores;    End users;    Job submission;    Overall stabilities;    Persistent connection;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/523/1/012010/pdf
DOI  :  10.1088/1742-6596/523/1/012010

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Since the ALICE experiment began data taking in early 2010, the amount of end user jobs on the AliEn Grid has increased significantly. Presently 1/3 of the 40K CPU cores available to ALICE are occupied by jobs submitted by about 400 distinct users, individually or in organized analysis trains. The overall stability of the AliEn middleware has been excellent throughout the 3 years of running, but the massive amount of end-user analysis and its specific requirements and load has revealed few components which can be improved. One of them is the interface between users and central AliEn services (catalogue, job submission system) which we are currently re-implementing in Java. The interface provides persistent connection with enhanced data and job submission authenticity. In this paper we will describe the architecture of the new interface, the ROOT binding which enables the use of a single interface in addition to the standard UNIX-like access shell and the new security-related features.