Abstract
This paper presents a Service Level Agreement (SLA) management architecture for the Grid. SLAs are an essential component in building Grid systems where commitments and assurances are specified, implemented and monitored. Targeting CPU type resources, we show how a SLA manager is able to interface with a broker designed for user applications that require resources on demand. The broker uses a novel three-phase commit protocol which provides the means to secure resources that meet the application's requirements through SLAs. Experiments are carried out on a Grid testbed to show how a SLA for a compute service is specified. Experimental results show that the broker provides performance enhancement in terms of the time taken from submission of application requirements until a job begins execution.
Published Version
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