Browsing by Author "Baur, Timo"

Interoperability is an important issue, especially in Grid infrastructures that use multiple, inhomogeneous Grid middlewares. Monitoring such heterogeneous scenarios requires interoperability of different information services. The approach taken bases on an integration proxy together with a standardized information model. This proxy functions as a bridge between the information models used in different Grid information services by using GLUE 2.0 as the homogeneous common model. This paper outlines the chosen architecture and details the experiences gained with the GLUE 2.0 schema.

In many Grid infrastructures different kinds of information services are in use, which utilize different incompatible data structures and interfaces to encode and provide their data. Homogeneous monitoring of these infrastructures with the monitoring data being accessible everywhere independently of the middleware which provided it, is the basis for a consistent status reporting on the Grids’ resources and services. Thus, interoperability or interoperation between the different information services in a heterogeneous Grid infrastructure is required. Monitoring data must contain the identity of the affected Virtual Organization (VO) so that it can be related to the resources and services the VO has allocated to enable VO-specific information provision. This paper describes a distributed architecture for an interoperable information service, which combines data unification and categorization with policies for VO membership, VO resource management and data transformations. This service builds the basis for an integrated and interoperating monitoring of Grids, which provide their data to more than one VO and utilize heterogeneous information services.