This paper discusses the component model and interface design procedure for data transfer in DAME (Design Automation of Microprocessor based systems, using an Expert system approach), a system in development that will be capable of producing the complete design from original system specification, such as the type of application, cost, processing requirements, power consumption, etc.Signals connecting microprocessor components are used to transfer information between the components. Several different types of information were found to be involved in data transfer. The model developed for data transfer treats each of the information exchange as a primitive. Each information primitive consists of the timing information of signals involved and the state information about the exact state of these signals during the information exchange. In DAME, design decisions are made by a set of rules that manipulates the information exchange primitives to obtain the final interface design.
As computer networks become more commonplace, the migration to fully distributed systems is a natural progression. Distributed systems provide an architecture and resources capable of processing efficiently a myriad of different job types. However, these resources are quite often under-utilized. An adaptive Scheduling Advisor is proposed for computing resource management in distributed systems by providing a means for optimal mapping of an application onto the system. To make its decision, the Scheduling Advisor uses the job information, a detailed description of the system, and current dynamic parameters. The decision-making process is controlled by a set of scheduling heuristics, a simple rule base, and a set of cost functions. In addition to fixedsize jobs, it is able to produce schedules for jobs that can be scalable over a variable number of nodes.
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