A new type of smart pointer for data object reference both in memory and in root files

17th International Workshop on Advanced Computing and Analysis Techniques in Physics Research

物理学;计算机科学

Li, T.^1 ; Huang, X.T.^1

School of Physics, Shandong University, No.27 Shanda South Road, Jinan, Shandong

250100, China^1

关键词: Data correlations;    Data input;    Data objects;    Event selection;    High energy physics experiments;    New mechanisms;    Off-line softwares;    Universally unique identifiers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/762/1/012001/pdf
DOI  :  10.1088/1742-6596/762/1/012001

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Based on ROOT framework, we develop a new mechanism named as SmartRef for event data correlations in offline data processing of High Energy Physics experiments. SmartRef uses the Universally Unique Identifier in ROOT to handle correlations between event data objects, both in memory and in ROOT files. It also provides a lazy-loading functionality to speed up event selection processes and simplify data input system. We have applied SmartRef to the JUNO offline software and used it as a test-bed. The test results show that SmartRef provides a significant improvement in event selection processes.