A Recursive Architecture for Hierarchical Grid Resource Management ⋆ Eduardo Huedo * , Rub´ en S. Montero, Ignacio M. Llorente Departamento de Arquitectura de Computadores y Autom´ atica, Facultad de Inform´atica, Universidad Complutense, 28040 Madrid, Spain. Abstract Grid resource management has been traditionally limited to just two levels of hierarchy, namely local resource managers and metaschedulers. This results in a non manageable, and thus not scalable, architecture, where each metascheduler has to be able to access thousands of resources, which also implies having a detailed knowledge about their interfaces and configuration. This paper presents a recur- sive architecture allowing an arbitrary number of levels in the hierarchy. This way, resources can be arranged in different ways, for example, following organizational boundaries or aggregating them by similarity, while hiding the access details. An implementation of this architecture is shown, as well as its benefits in terms of au- tonomy, scalability, deployment and security. The proposed implementation is based on existing interfaces, allowing for standardization. Key words: Distributed architectures, System Management, Standards 1 Introduction The high expectations raised by grid computing have favored the develop- ment and deployment of a growing number grid infrastructures, like EGEE 1 , ⋆ This research was supported by Consejer´ ıa de Educaci´on of Comunidad de Madrid, Fondo Europeo de Desarrollo Regional (FEDER) and Fondo Social Eu- ropeo (FSE), through BioGridNet Research Program S-0505/TIC/000101, by Min- isterio de Educaci´on y Ciencia, through the research grant TIN2006-02806, and by European Union, through BEinGRID project EU contract IST-2005-034702 * Corresponding author. Tel: +34 91 394 76 03. Fax: +34 91 394 75 27. Email address: ehuedo@fdi.ucm.es (Eduardo Huedo). 1 http://www.eu-egee.org Preprint submitted to FGCS 20 May 2008