IEEE Transactions on Parallel and Distributed Systems
Real-Time Communication in Multihop Networks
IEEE Transactions on Parallel and Distributed Systems
A programmable routing controller for flexible communications in point-to-point networks
ICCD '95 Proceedings of the 1995 International Conference on Computer Design: VLSI in Computers and Processors
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 06
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In this paper we present a method, called TDC, for time-deterministic delivery of fine-grain messages in multiprocessor architectures with point-to-point interconnection networks. Other methods for scheduling predictable communication in such networks are flexible and efficient but suffer from a high cost when hardware-only implementations are required. Using results from a comparative study, we argue that efficiency in the scheduling technique can be traded for simplicity in the implementation. In particular, we show that if the simpler techniques of TDC are used instead of more complex methods, the implementation cost for communication mechanisms can be reduced by as much as 40% at the price of an overall performance degradation of no more than 15% in the application. In addition, the lower hardware requirements of TDC reduce the message processing delay by 33%.