A Service-Oriented Job Management Scheme for the Grid

The emergence of OGSA represents a consensus on the standardization of resource accessing interfaces as grid services. However, current job management systems are not geared toward the application requirements from a service grid. The accessing fashion in a service grid has shifted from traditional batch processing to interactive communication with services. Moreover, different levels of QoS guarantees are demanded by different categories of applications. In such context, a service-oriented job management scheme is presented, which serves as the service broker mediating invocations between users and grid services, providing a set of transparent and location-independent interfaces. Service Level Agreements （SLAs） are also leveraged to differentiate QoS requirements, and the corresponding actions taken by the job management system could be customized via a profile named SLAP. The proposed scheme has been incorporated into the Vega grid. Preliminary results demonstrate its flexibility and effectiveness.