Abstract

The contribution of this thesis is the development of a framework for simplifying the construction of grid computational applications. The framework provides a generic extension mechanism for incorporating functionality into applications and consists of two models: (1) the reflective graph and event model, and (2), the exoevent notification model. These models provide a platform for extending user applications with additional capabilities via composition. While the models are generic and can be used for a variety of purposes, including security, resource accounting, debugging, and application monitoring [VILE97, FERR99, LEGI99, MORG99], we apply the models in this dissertation towards the integration of fault-tolerance techniques. Using the framework, fault-tolerance experts can encapsulate algorithms using the two reflective models developed in this dissertation. Developers incorporate these algorithms into their tools and augment the set of services provided to application programmers. Application programmers then use these augmented tools to increase the likelihood that their programs will complete successfully.

Citations