Length and Processor Speed on the Performance ofthe

This paper presents a comparative study of the performance of the bidirectional ring and the unidirec-tional ring multiprocessor, with emphasis on the eeect of system parameters, speciically, the message length and the relative processor speed. The choice of these parameters may not be optimum due to the performance cost tradeoos in practice. Our study shows that the use of bidirectional ring is more eeective in such subopti-mum system conngurations and can improve the processor utilization by up to 35%.