同步辐射光源实验中虚拟计算系统的设计和应用

Design and Application of a Virtual Computing System in Synchrotron Light Source

【目的】高能同步辐射光源(HEPS)会产生海量实验数据,需要大量的高性能计算资源来处理和分析,进而支持多样化的科学研究。同时,计算环境需要提供安全的数据存储和访问控制机制,以确保数据的安全性和隐私保护。当前工作站的计算能力成为限制实验分析的瓶颈,庞大的数据量使用户难以创建本地数据副本。用户使用本地工作站进行数据下载和分析的传统方式已无法满足日益增长的实验需求,需要强大的云计算平台和计算系统支持。【方法】本文提出了基于虚拟化技术的HEPS云桌面计算系统,用于HEPS中的三维数据成像和晶体散射类等实验,其特点是对图像显示效果要求高,需要高性能的GPU计算和图像渲染。因此,利用计算集群的资源来提供虚拟云桌面服务,统一纳管计算资源并提高资源利用率非常重要。【应用背景】本文介绍了HEPS的基本情况、实验特点和虚拟云桌面系统的研究动机。【结果】本文设计了虚拟云桌面的体系结构、服务模式、认证系统、GPU的使用方法等。【结论】展示了虚拟云桌面系统在光源实验中的实际应用效果,体现了虚拟云桌面的优越性和在同步辐射光源领域的良好应用前景。

[Objective]The High Energy Photon Source(HEPS)generates a massive amount of experimental data,requiring substantial high-performance computing resources for processing and analysis,thereby supporting diverse scientific research.Additionally,the computing environment needs to provide secure data storage and access control mechanisms to ensure data security and privacy protection.The computational capabilities of current workstations have become a bottleneck for experimental analysis,and the vast amount of data makes it difficult for users to create local data copies.The traditional method of using local workstations for data downloading and analysis is no longer able to meet the growing experimental demands,necessitating robust cloud computing platforms and computing system support.[Methods]This paper proposes a virtualized HEPS cloud desktop computing system for three-dimensional data imaging and crystal scattering experiments in HEPS.The system has the characteristics of high image display requirements,demanding high-performance GPU computing and image rendering,which are generally lacking in the experimental site.Therefore,utilizing the resources of a computing cluster to provide virtual cloud desktop services and centralizing the management of computing resources to improve resource utilization is crucial.[Background]This paper first introduces the basic situation,experimental characteristics,and research motivation of the HEPS and the virtual cloud desktop system.[Results]We design the architecture,service model,authentication system,and GPU utilization methods for the virtual cloud desktop.[Conclusion]Finally,we demonstrate the practical application of the virtual cloud desktop system in light source experiments,showcasing its superiority and promising prospects in the field of synchrotron radiation sources.