Abstract
This paper presents a tool, the Performance Model Manager, which addresses the complexity of the construction and management of a set of Functional Performance Models on a computing server in a Grid environment. The operation of the tool and the features it implements to achieve this goal are described. Integration of Functional Performance Models with a GridRPC middleware, using the tool's interfaces is illustrated. Finally, an example application is used to demonstrate the construction of the models and experiments that show the benefit of using the detailed models are presented.