Modular crossbar switch for large-scale multiprocessor systems
Bernhard Quatember · 1981
This paper describes the architecture of an innovative modular crossbar switch for large-scale multiprocessor systems; its modular design principle is given a particularly thorough treatment. The crucial points of this design principle are the utilization of bit-serial buses and an integration of a combination of crosspoints with its own microprogrammed controller, (which is designated as "configurational processor") into a single building block, preferably an IC. This innovative concept allows the implementation of full crossbar switches for systems up to about 128 processors at relatively low cost. The expense of a crossbar for a system with approximately 1024 processing elements is then comparable to that of the other parts of the whole system.