Monsoon is an experimental multi-threaded multiprocessor targeted to large-scale, general purpose scientific and symbolic computations. In particular, Monsoon is designed for the efficient execution of code compiled from Id, a high-level, implicitly parallel declarative language. Monsoon is a product of a multiyear cooperative research and development program between the Massachusetts Institute of Technology (MIT) and Motorola, Inc., which, in turn is an outgrowth of over ten years of research in dynamic dataflow architectures and languages conducted at MIT. The intent is to provide an overall view of the Monsoon hardware and software system architecture. In addition, the run-time system and emulator are detailed.>

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An implementation technique for functional languages that has rcceived recent attention is graph reduction, which offers opportuniqt for the exploitation of parallelism by multiple processors.While several proposals for parallel graph reduction machines have been made, differing terminology and approaches make these proposals dimcuk to compare.This paper presents a systematic approach to the study of parallel graph reduction machines, and proposes an abstract architecture for such a machine that is independent of the base language and communication network chosen for an actual implementation.The abstract architecture, in addition to serving as a foundation for the design of real machines, highlights the necessary features of all parallel graph reduction machines.