Integration of Resource Management Activities in Distributed Systems

We present a two-level model of distributed computation based on the actor model. This two-level model is the basis for developing a semantic framework that supports dynamic customizability and separation of concerns in designing and reasoning about components of open distributed systems (ODS). ODS evolve dynamically and components of ODS interact with an environment that is not under their control. In particular, we would like to be able to consider separately issues such as: functional behavior of a service; failure semantics and fault tolerance protocols; and resource management issues such as memory management, migration, load balancing, and scheduling. In this report we consider remote creation, migration, and reachability snapshot services: their specification at different levels of abstraction, and their composition.