(1) Imperial College, London
(2) CERN, European Organization for Nuclear Research, Geneva, Switzerland
(3) University of Edinburgh
(4) Rutherford Appleton Laboratory
(5) University of Glasgow
(6) Lancaster University
(7) QMUL, London
(8) University of Sheffield
GridPP is 33m, 6 year project, funded by PPARC that aims to establish a Grid for UK Particle Physics in time for the turn on of the CERN Large Hadron Collider (LHC) in 2007. In phase 1, the project established a large-scale prototype Grid across the UK. The project has now entered phase 2, and is developing the prototype testbed into a production service. LHC computing technical design reports and the necessary baseline services are reviewed. The steps necessary to establish a system of sufficient functionality, robustness and scale are described in order to meet the Particle Physics Computing Challenge.
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