IGR of EPSRC Grant GR/S78346/01 Establishment of an Experimental OGSA Grid Wolfgang Emmerich Dept. of Computer Science University College London Gower St, London WC1E 6BT, UK w.emmerich@cs.ucl.ac.uk John Darlington London e-Science Centre Imperial College 180 Queen’s Gate, London SW7 2BZ jd@doc.ic.ac.uk Malcolm Atkinson, Dave Berry National e-Science Centre University of Edinburgh Edinburgh, EH8 9AA daveb@nesc.ac.uk Savas Parastatidis North East Regional e-Science Centre University of Newcastle Newcastle upon Tyne, NE1 7RU savas.parastatidis@ncl.ac.uk March 22, 2005 Abstract At the outset of this one year project, a number of organisations had made initial experience in deploying web services technologies and the Open Grid Services Architecture (OGSA) on campus grids, i.e. within the boundaries of an organisation. The main aim of this project was to establish a testbed that uses web services technologies in general, and implementations of OGSA, in particular, in a truly decentralised manner and across organisational boundaries. The project achieved this objective by establishing an experimental grid based on the Globus Toolkit 3.2 (GT 3.2) implementation that integrated compute resources at UCL, Imperial College, Newcastle and Edinburgh. Once the testbed was established, the project investigated performance, reliability and security of grid service invocation across wide area networks and questions regarding the systematic deployment of grid services into containers hosted on foreign resources. The findings of the project are briefly summarised here and are published in two technical reports available from the project’s web site [2, 3]. 1