The EGEE grid offers an unprecedented opportunity to observe, and start understanding the new computing practices of e-science. With more than 40000 CPUs and 5PB of storage distributed worldwide, the management of 100.000 concurrent jobs, and the perspective of a sustainable development, the EGEE grid is one of the more exciting artificial complex systems to observe.

The Grid Observatory collects, publishes, and analyzes, data on the behaviour of the EGEE grid. The ultimate goal of The Grid Observatory is to integrate data collection, data analysis, and the development of models and of an ontology for the domain knowledge.

The Grid Observatory is part of the EGEE-III project. Because grid data and models are equally relevant for computer science, middleware development and system administration, the Grid Observatory is an open project.

• The traces are publicly available for scientific research
• Currently, the Grid Observatory provides only traces of the EGEE grid; it can be extended in the future to traces of other grids

SELECTED EVENT: The 10th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2010) May 17-20, 2010, Melbourne, Australia. papers due: 2 November 2009