Service Level Agreement Requirements of an Accounting-Driven Computational Grid

In this paper we present the requirements of a national computing Grid. In particular we discuss the issues involved in managing complex policies of multiple stakeholders in such a large-scale, dynamic, and heterogeneous Grid. We also propose a Service Level Agreement (SLA) and agent-based architecture to address these issues. This work is a continuation of the work performed and experiences gained when we developed a Grid accounting system for the Swedish national Grid network, called SweGrid, which provides the foundation for the investigation presented here. We conclude that many SLA concepts fit very well within the SweGrid network to address some of the issues of the current system. Future work includes prototyping parts of the SLA framework and running simulations before eventually deploying it in the SweGrid production environment.