GridPP3

我们建议部署网格作为向英国粒子物理社区提供大规模计算资源的主要机制。我们相信，这个基础将巩固英国物理学家的成功，并增加他们的发现潜力。为了做到这一点，我们需要建立一个具有前所未有的健壮性、规模和功能的生产质量网格。我们的计划确保与基础设施共同开发的应用程序可以获得足够的硬件资源，从而形成一个既可访问又具有包容性的网格。该提案完全与国际项目相结合，我们希望抓住机会，利用英国在几个领域已经建立的领导地位。该网格将直接连接到横跨欧洲的大型电子科学网格，并将与美国的网格进行互操作。英国已经在伦敦、NorthGrid、ScotGrid和SouthGrid建立了4个运行中的tier -2，它们现在都对LCG做出了重大贡献。LCG技术设计报告断言，Tier-2s的作用是为蒙特卡罗模拟和最终用户分析提供计算和适当的存储服务。二级数据中心将根据需要从一级数据中心获取数据，二级数据中心生成的数据将发送至一级数据中心永久存储。该提案结合了剑桥大学二级站点的规定，并作为南方电网二级站点的一部分建立了所需的服务水平。剑桥大学的目标是在CamGrid项目的背景下为SouthGrid提供资源，从而从当地校园电网的持续投资中获得额外的容量。

List the main objectives of the proposed research in order of priority [up to 4000 chars] We propose to deploy a Grid as the main mechanism for delivering very large scale computational resources to the UK Particle Physics community. We believe this foundation will underpin the success, and increase the discovery potential, of UK physicists. In order to do this we will need to establish a production quality Grid of unprecedented robustness, scale and functionality. Our plans ensure that sufficient hardware resources become available with applications that are codeveloped with the infrastructure, resulting in a Grid that is both accessible and inclusive. The proposal is fully integrated with international projects and we wish to seize the opportunity to capitalise on the UK leadership already established in several areas. The Grid will be directly connected to a large-scale e-Science Grid across Europe and will inter-operate with Grids in the United States. The UK has established 4 operational Tier-2s in the UK, London, NorthGrid, ScotGrid and SouthGrid, which are now all contributing significantly to LCG. The LCG Technical Design Report asserts that the role of the Tier-2s is to provide computational and appropriate storage services for Monte Carlo simulation and for end-user analysis. The Tier-2s will obtain data as required from Tier-1 centres, and the data generated at Tier-2s will be sent to Tier-1 centres for permanent storage. This proposal incorporates provision for a Tier-2 site at Cambridge University with the required service levels established as part of the SouthGrid Tier-2. Cambridge aims to provide resources to SouthGrid in the context of the CamGrid project, thereby levering extra capacity from the ongoing investments in the local campus grid.