Ada on a Hypercub e

The widespread use of parallel machines, and hypercubes i n particular, is being held back by the lack of high-order paralle l programming languages. In this paper we discuss the issue s involved in establishing an existing language that supports par-allel processing, Ada, on a hypercube multiprocessor. The ma-jority of the paper addresses the requirements and implementa-tion of the tun-time system, which is the key to establishing any parallel language. First, the requirements of the tun-time sys-tem for Ada are described from a machine-independent point o f view. Next, the approach taken toward implementing this sys-tem on a hypercube is discussed, with considerations given fo r language-level program partitioning and intetprocessor commu-nication performance. Finally, the status of our current imple-mentation is discussed and some concluding remarks are mad