Provision of Tier-2 computer hardware and system support from Sept 2007 to March 2011.

GRID是一个世界范围内正在建设的计算系统，它提供了分析欧洲核子研究中心（CERN）于2007年开始运行的新型大型强子对撞机（LHC）所采集数据所需的计算能力。这种计算能力分布在大型中央集群（第1层）和各个大学院系（第2层）上。届时将需要数十万台计算机。所有的东西都通过互联网连接在一起，作业以这样一种方式自动运行，以最有效的方式使用计算机。

The GRID is the world-wide computing system being constructed to provide the computing power needed to analyse the data being taken with the new large hadron collider (LHC) based at CERN that starts running in 2007. This computing power is spread over large central clusters (Tier-1) and based in individual University departments (Tier-2). Hundreds of thousands of computers will be needed. Everything is connected together using the Internet and jobs are run automatically in such a way that the computers are used in the most efficient manner.