ITR: Computing Grid for Analysis of Data from PHENIX at RHIC

这个项目是在信息技术和核物理之间的接口。我们将在斯托尼布鲁克和布鲁克海文国家实验室开发并应用一个两站点数据网格，以分析在相对论重离子对撞机上进行的PHENIX实验中的重离子碰撞。RHIC的碰撞产生了成千上万的粒子，导致了大量的数据需要分析。为了研究这种罕见的大角度胶子散射过程，以及核介质如何影响这一过程，我们必须对数亿个这样的复杂事件进行筛选。我们将使用Globus协作开发的软件工具，以便能够在两个计算机设施之间进行无缝数据分析，这两个设施包括许多计算机和兆兆字节的磁盘存储。作业将自动定向到请求的数据驻留在磁盘上的设施，并将结果返回给用户。我们将利用其他人在信息技术方面的许多发展，但我们带来了一个独特的混合真实的数据，渴望的用户，和一个尖端的数据网格应用程序与一个简单的示范网格的两个附近的网站非常相似的硬件。测试和优化这个原型网格在“战斗”条件下将提供适用于未来大规模全球数据网格的发展信息，以及PHENIX的物理结果。

This project is at the interface between Information Technology and Nuclear Physics. We will develop and apply a two-site data grid at Stony Brook and Brookhaven National Laboratory to analysis of heavy ion collisions in the PHENIX experiment at the Relativistic Heavy Ion Collider. Collisions at RHIC produce many thousands of particles, resulting in enormous volumes of data to analyze. In order to study the rare process of gluon scattering at large angle, and how the nuclear medium affects this process, we must sift through hundreds of millions of these complex events. We will use the software tools developed by the Globus collaboration to allow seamless data analysis across two computer facilities comprising many computers and terabytes of disk storage. Jobs will be automatically directed to the facility where requested data are disk resident, and results returned to the user. We will take advantage of many developments by others in information technology, but we bring to the table a unique mix of real data, eager users, and a cutting edge data grid application with a simple demonstration grid of two nearby sites with very similar hardware.Testing and optimizing this prototype grid under "battle" conditions will provide information applicable to development of large-scale global data grids for the future, as well as physics results from PHENIX.