A resource management model for dynamic, scalable, dependable, real-time systems

Dynamic real-time systems function in unpredictable environments and have requirements that span many domains such as time, survivability, and scalability. The system requirements are typically determined as a function of the environment, further exacerbating the unpredictability of the problem. Existing solutions, for the most part, have focussed on problems for which the attributes are static, and there exists a rich set of solutions for such problems. Our problem domain has attributes that are inherently dynamic rather than static, requiring a new approach. We present a model for resource management for dynamic real-time systems. The model includes a language for specifying both static and dynamic attributes. Dynamic attributes include those that are measured as a ell as requirements that are evaluated on-line. In addition, we describe a resource management architecture for such systems.