GRID SERVICE LEVEL AGREEMENTSGrid Service Level Agreements • August 25th, 2003
Abstract We present a reformulation of the well-known GRAM architecture based on the Service-Level Agreement (SLA) negotiation protocols defined within the Ser- vice Negotiation and Access Protocol (SNAP) framework. We illustrate how a range of local, distributed, and workflow scheduling mechanisms can be viewed as part of a cohesive yet open system, in which new scheduling strategies and management policies can evolve without disrupting the infrastructure. This ar- chitecture remains neutral to, and in fact strives to mediate, the potentially con- flicting resource, community, and user policies.
