Conclusion

This paper focuses on the design and implementation of general, extensible abstractions for brokered leasing as a basis for a federated, networked utility. The combination of Shirako leasing services and the Cluster-on-Demand cluster manager enables dynamic, programmatic, reconfigurable leasing of cluster resources for distributed applications and services. Shirako decouples dependencies on resources, applications, and resource management policies from the leasing core to accommodate diversity of resource types and resource allocation policies. While a variety of resources and lease contracts are possible, resource managers with performance isolation enable guest applications to obtain predictable performance and to adapt their resource holdings to changing conditions.