WorldGrid测试平台上的ATLAS和CMS应用
ATLAS and CMS applications on the WorldGrid testbed
摘要：
WorldGrid是一个横跨欧洲和美国的洲际测试平台，它基于Globus工具包集成了架构上不同的网格实现。它是在DataTAG和iVDGL项目的背景下开发的，并在IST 2002（哥本哈根）和SC 2002（巴尔的摩）的WorldGrid演示中成功演示。两个HEP实验，ATLAS和CMS，成功地利用WorldGrid测试平台执行工作，模拟他们的探测器对物理事件的响应，这些事件是从2007年开始在LHC加速器上预期的真实碰撞产生的。多年来，这种数据密集型活动一直在由数百个节点和TB磁盘和磁带存储组成的本地专用计算场上运行。在WorldGrid测试平台中，HEP模拟作业首次在美国和欧洲的资源上提交并无差别地运行，尽管它们的底层网格实现不同，并产生可以在提交机器上检索和进一步分析的数据，或者简单地存储在远程资源上并注册在可供网格进一步处理的目录上。在这篇文章中，我们描述了来自欧洲的ATLAS和CMS应用程序的作业提交，通过在EDG用户界面上运行的GENIUS门户网站提交给EDG资源代理，指出所选择的互操作性解决方案，从应用程序的角度来看，在WorldGrid环境中的数据管理，以及CMS特定的生产工具，这些工具与GENIUS门户网站相连。
英文摘要：
WorldGrid is an intercontinental testbed spanning Europe and the US integrating architecturally different Grid implementations based on the Globus toolkit. It has been developed in the context of the DataTAG and iVDGL projects, and successfully demonstrated during the WorldGrid demos at IST2002 (Copenhagen) and SC2002 (Baltimore). Two HEP experiments, ATLAS and CMS, successful exploited the WorldGrid testbed for executing jobs simulating the response of their detectors to physics eve nts produced by real collisions expected at the LHC accelerator starting from 2007. This data intensive activity has been run since many years on local dedicated computing farms consisting of hundreds of nodes and Terabytes of disk and tape storage. Within the WorldGrid testbed, for the first time HEP simulation jobs were submitted and run indifferently on US and European resources, despite of their underlying different Grid implementations, and produced data which could be retrieved and further analysed on the submitting machine, or simply stored on the remote resources and registered on a Replica Catalogue which made them available to the Grid for further processing. In this contribution we describe the job submission from Europe for both ATLAS and CMS applications, performed through the GENIUS portal operating on top of an EDG User Interface submitting to an EDG Resource Broker, pointing out the chosen interoperability solutions which made US and European resources equivalent from the applications point of view, the data management in the WorldGrid environment, and the CMS specific production tools which were interfaced to the GENIUS portal.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
