Descripción: |
Resource discovery (RD) is an important key issue in large grid systems since resource reservation and task scheduling are based on it. This paper proposes a novel semantic description and registration framework for large grid RD systems. The description model consists of a set ontologies and services. Ontologies are used as a data model for resource and application description, whereas the services are to accomplish the description process. The registration model is also based on ontology, where nodes of the resources are classified to some classes according to the ontology concepts, which means each class represents a concept in the ontology. Each class has a head, which plays the role of a registry in its class and communicates with the other heads of the classes during the discovery process. The paper shows how the framework satisfies grid RD features such as scalability, decentralization, dynamism and interoperability. |