SUPRENUM: a massively-parallel machine for numerical applications

A detailed discussion of the hardware and software architecture of the SUPRENUM supercomputer is presented. A largely bottleneck-free interconnection structure is accomplished in a hierarchical manner: the machine consists of up to 16 `clusters´, and each cluster consists of 16 `working nodes´ plus some organizational nodes. The node is accommodated on a single circuit board; its architecture is based on the principle of data structure architecture explained in the paper. SUPRENUM is strictly a message-based system; consequently, the local node operating system has been designed to handle a secured message exchange with a considerable degree of hardware support and with the lowest possible software overhead