Journal of Grid Computing
Volume 2, Number 4, 323-339, DOI: 10.1007/s10723-005-0151-6

The Relational Grid Monitoring Architecture: Mediating Information about the Grid

A. W. Cooke, A. J. G. Gray, W. Nutt, J. Magowan, M. Oevers, P. Taylor, R. Cordenonsi, R. Byrom, L. Cornwall and A. Djaoui, et al.

From the issue entitled "The EU DataGrid Setting the Basis for Production Grids"

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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-GMArsquos 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.

Keywords  DataGrid - Grid information system - Grid monitoring - Grid monitoring architecture - R-GMA

L. Field: Now at CERN, Switzerland.
J. Leake: Under contract from Objective Engineering Ltd.

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