The Relational Grid Monitoring Architecture: Mediating Information about the Grid |
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| Authors: | A. W. Cooke A. J. G. Gray W. Nutt J. Magowan M. Oevers P. Taylor R. Cordenonsi R. Byrom L. Cornwall A. Djaoui L. Field S. M. Fisher S. Hicks J. Leake R. Middleton A. Wilson X. Zhu N. Podhorszki B. Coghlan S. Kenny D. O’Callaghan J. Ryan |
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| Affiliation: | (1) Heriot-Watt University, Edinburgh, UK;(2) IBM, UK;(3) Queen Mary, University of London, UK;(4) Rutherford Appleton Laboratory, UK;(5) SZTAKI, Hungary;(6) Trinity College, Dublin, Ireland |
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| Abstract: | We have developed and implemented the Relational Grid Monitoring Architecture (R-GMA) as part of the DataGrid project, to provide a flexible information and monitoring service for use by other middleware components and applications.R-GMA presents users with a virtual database and mediates queries posed at this database: users pose queries against a global schema and R-GMA takes responsibility for locating relevant sources and returning an answer. R-GMA s architecture and mechanisms are general and can be used wherever there is a need for publishing and querying information in a distributed environment.We discuss the requirements, design and implementation of R-GMA as deployed on the DataGrid testbed. We also describe some of the ways in which R-GMA is being used.L. Field: Now at CERN, Switzerland.J. Leake: Under contract from Objective Engineering Ltd. |
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| Keywords: | DataGrid Grid information system Grid monitoring Grid monitoring architecture R-GMA |
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