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Architecture evaluation based on the datapath structure and parallel constraint

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4 Author(s)
Yamaguchi, M. ; Precision Technol. Dev. Center, Sharp Corp., Nara, Japan ; Yamada, A. ; Nakaoka, T. ; Kambe, T.

This paper presents a novel way of evaluating architecture of embedded custom DSPs which helps designers optimizing the datapath configuration and the instruction set. Given a datapath structure, it evaluates the performance in terms of an estimated number of steps to execute the target program on the datapath. A concept of “parallel constraint” is newly introduced, which enables evaluation of the impact of instruction format design on the performance without explicitly specifying the instruction format. The number of execution steps is estimated by a combination of static analysis and dynamic analysis. It enables fast and precise estimation of actual performance in the early design stage. We show some experimental results on an actual signal processor to demonstrate the accuracy of estimation and the usefulness of this method in architecture design

Published in:

Design Automation Conference, 1997. Proceedings of the ASP-DAC '97 Asia and South Pacific

Date of Conference:

28-31 Jan 1997