中国SKA区域中心原型系统——软件平台

Software platform on China SKA Regional Centre prototype system

平方公里阵列(Square Kilometre Array,SKA)射电望远镜将在多个科学方向取得革命性的突破,而SKA软件系统是影响科学产品的关键因素之一.SKA区域中心是天文学家进行SKA数据分析、科学研究和学术交流的平台.处理SKA科学数据的软件环境需要具备通用性、灵活性和高适应性.中国科学家已经建成了中国SKA区域中心原型机,部署了被大型超级计算机广泛使用的作业调度系统,并安装了能够处理当前主流射电望远镜观测数据的天文软件,还部署了多个科学数据处理管线,以方便不同科学方向的观测数据的自动化并行处理.本文介绍了中国SKA区域中心原型机的软件平台和处理SKA先导望远镜数据的管线,包括低频连续谱成像管线、谱线成像管线以及甚长基线干涉测量数据处理管线.国内外用户已经基于该平台成功开展了SKA相关科学研究.该平台的建设和运行为未来全面建设中国SKA区域中心提供了宝贵的实践经验.

The Square Kilometre Array(SKA)radio telescope is designed to revolutionize scientific breakthroughs in a variety of scientific fields,and the SKA software system is one of the key factors influencing scientific products.The software environment for processing SKA science data must be versatile,flexible,and adaptable.The SKA Regional Centre(SRC)serves as a platform for astronomers to analyze SKA data,conduct scientific research,and interact with other academics.To enable automated parallel processing of observational data from various scientific fields,Chinese scientists have developed the China SRC-prototype(CSRC-P),installed a job scheduling system widely used by large supercomputers,installed an astronomical software platform capable of processing observational data from current leading radio telescopes,and deployed multiple scientific data processing pipelines.This paper describes the software platform of the CSRC-P as well as pipelines for processing SKA precursor telescope data,such as the low-frequency continuum imaging pipeline,spectral line imaging pipeline,and very long baseline interferometry data processing pipeline.Users worldwide have successfully conducted scientific research on SKA using this platform.The knowledge gained from the construction and operation of this platform will be useful in constructing a full-scale SRC in the future.