Web Service-Based Dynamic Resource and Job Managements for Large-Scale and Long-Time Grid Computations

In order to guarantee large-scale and long-time applications to execute smoothly in a dynamic and heterogeneous grid environment, we have designed and implemented a framework by which users can reserve and allocate on- demand resources, and manage their jobs from within grid- enabled applications. This framework is based on a three- tier architecture that consists of client API, centralized broker of resource and job managements, and backend services on resource reservation and job scheduling. The reservation service is currently based on Maui, and the job scheduling service is DRMAA (Distributed Resource Management Application API) compliant. In this paper, we present the API functionality, the architecture, and the implementation of this framework.