Service organization in OGSI

Virtual organization refers to the flexible, secure, coordinated resource sharing among dynamic collections of individuals, institutions, and resources. In OGSA, resources are represented as grid services. Until now, more efforts are taken to provide specific services for specific VO while ignoring the possible service conflicts or verbosity between different VOs in OGSI, which may cause chaos in the host. To ease the management of services, a distributed multi-layer service organization is proposed in this paper. Meanwhile, we present a new model to support building high-level services. Services collaboration and performance are also considered due to its importance in grid community especially in data grid, current techniques are customized to satisfy the requirements.