The work within this subproject focuses on the study of fundamental issues for organizing and accessing information in overlay computers and for controlling the computing power of their nodes. Novel algorithmic issues in distributed data management including caching and replication of primitive or more complex data (e.g., metadata), load management including load balancing and tuning and parameterization of adaptive software, and scheduling motivated by the size and the dynamic nature of overlay computers will be addressed, while we will also attempt to model intensive computations in overlay computer as processes in workflow management systems.