Download Grid Computing: First European Across Grids Conference, by Eduardo Huedo, Rubén S. Montero, Ignacio M. Llorente PDF

By Eduardo Huedo, Rubén S. Montero, Ignacio M. Llorente (auth.), Francisco Fernández Rivera, Marian Bubak, Andrés Gómez Tato, Ramón Doallo (eds.)

This publication constitutes the completely refereed post-proceedings of the 1st ecu throughout Grids convention held in Santiago de Compostela, Spain in February 2003.

The 39 revised complete papers provided have been rigorously chosen in the course of rounds of reviewing and development. The papers handle all present matters in grid computing, particularly grid middleware architectures, instruments, source administration, activity scheduling, facts administration, grid-based far away e-learning, stream-oriented database administration, information stripping, large-scale grid purposes, simulation, visualization, facts mining, grid functionality research, and grid monitoring.

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Additional info for Grid Computing: First European Across Grids Conference, Santiago de Compostela, Spain, February 13-14, 2004. Revised Papers

Example text

ACL’s). e. if a user as a role in a group and if he is member of one of its subgroups, he covers the same role in the subgroup), while the opposite is not generally true. The same inheritance rule applies for capabilities. 3 Authorization Status in EDG The Authentication and Authorization methods adopted by the EDG are based on the Globus Toolkit’s Grid Security Infrastructure (GSI) [7]. In EDG, as originally in Globus, to access the Grid, the user first creates a proxy certificate (via grid-proxy-init procedure) that is then sent to the requested resources in order to access them.

3 Resource Management Components We now describe certain details on the main components introduced in the previous section, namely, the Resource Searcher and the Application Launcher. 1 21 Resource Searcher The main duty of the Resource Searcher is to perform the matchmaking between job needs and available resources. The RS receives a job description as input, and produces as output a list of possible resources in which to execute the job. Resources are grouped into sets. Each set is a combination of Computing Elements that provide the minimum amount of free resources, as specified by the JobAd.

Section 3 describes the reflective computational system. Section 4 presents different scenarios of grid applications. Finally, section 5 presents our conclusions. This section also outlines our future work. 2 Grid Framework Computational grids evolve around sharing of networks, computers, and other resources. They provide support for services, which are distributed over multiple networked computers known as clusters. The proposed framework (see Figure 1) consists of elements such as authentication, sharing, coordination and synchronization.

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