TUMULT, the Twente University multiprocessor

TUMULT, (Twente University multiprocessor) is described. Its aim is the design and implementation of a modular extendable multiprocessor system. Up to 15 processing elements are connected through an interprocessor communication network, using message-passing for the exchange of data. The hardware is controlled by a distributed real-time operating system, written in modular Pascal and Modula-2. Each processing element can contain one or more processor (M680X0), memory boards, and I/O interfaces, all connected through a VME bus, which acts as a local bus. The network offers a fully connected communication service with error detection and recovery. In the version realized, the transfer rate is 20 Mbyte/s.<
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