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Decoupling of Computation and Communication with a Communication Assist

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4 Author(s)
Arno Moonen ; University of Technology, Eindhoven, The Netherlands ; Marco Bekooij ; Rene van den Berg ; Jef van Meerbergen

In an embedded multiprocessor system the minimum throughput and maximum latency of real-time applications are usually derived given the worst-case execution time of the software tasks. Derivation of the worst-case execution time becomes easier if it is independent of the available communication bandwidth. In this paper we show that the worst-case execution time of tasks does not depend on communication bandwidth if a Communication Assist (CA) is applied, despite that memory ports are shared. Furthermore we show that adding a CA increases the processor utilization and reduces the required communication bandwidth. Finally we show that the difference between the measured and computed worst-case processor utilization is less than 6%, for our MP3 playback application.

Published in:

Digital System Design Architectures, Methods and Tools, 2007. DSD 2007. 10th Euromicro Conference on

Date of Conference:

29-31 Aug. 2007