基于GridFTP的先进光子源x射线光子相关光谱实时数据移动架构

S. Narayanan, T. Madden, A. Sandy, R. Kettimuthu, M. Link
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引用次数: 2

摘要

x射线光子相关光谱(XPCS)是一种独特的工具,可以在广泛的空间和时间范围内研究各种材料的动力学性质。XPCS测量散斑模式的相关变化,当相干x射线束从无序样品散射时,在区域探测器图像的时间序列上产生。这项技术依赖于“大数据”,并在很大程度上依赖于高性能计算技术。在本文中,我们提出了一种高速数据移动架构,用于在高级光子源(APS)内部以及APS与用户机构之间移动数据。我们描述了内部数据移动和基于gridftp的解决方案所涉及的挑战,该解决方案可以更有效地利用APS波束时间。讨论了GridFTP插件作为高级光子源数据采集系统的一部分的实现,用于将数据实时传输到高性能计算系统进行数据分析。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
GridFTP based real-time data movement architecture for x-ray photon correlation spectroscopy at the Advanced Photon Source
X-ray photon correlation spectroscopy (XPCS) is a unique tool to study the dynamical properties in a wide range of materials over a wide spatial and temporal range. XPCS measures the correlated changes in the speckle pattern, produced when a coherent x-ray beam is scattered from a disordered sample, over a time series of area detector images. The technique rides on “Big Data” and relies heavily on high performance computing (HPC) techniques. In this paper, we propose a highspeed data movement architecture for moving data within the Advanced Photon Source (APS) as well as between APS and the users' institutions. We describe the challenges involved in the internal data movement and a GridFTP-based solution that enables more efficient usage of the APS beam time. The implementation of GridFTP plugin as part of the data acquisition system at the Advanced Photon Source for real time data transfer to the HPC system for data analysis is discussed.
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