Open Access

A New Multithreaded Architecture Supporting Direct Execution of Esterel

  • Simon Yuan1Email author,
  • LiHsien Yoong1,
  • Sidharta Andalam1,
  • ParthaS Roop1 and
  • Zoran Salcic1
EURASIP Journal on Embedded Systems20092009:610891

https://doi.org/10.1155/2009/610891

Received: 1 April 2008

Accepted: 2 April 2009

Published: 21 July 2009

Abstract

We propose a fully pipelined, multithreaded, reactive processor called STARPro for direct execution of Esterel. STARPro provides native support for Esterel threads and their scheduling. In addition, it also natively supports Esterel's preemption constructs, instructions for signal manipulation, and a notion of logical ticks for synchronous execution. In addition to the reactive processors, we propose a new intermediate format called unrolled concurrent control-flow graph with surface and depth ( ) that closely resembles the Esterel source. A compiler, based on , has been developed for code generation. We have synthesized STARPro and have carried out a range of benchmarking experiments. Experimental results reveal substantial improvement in performance and code size compared to software compilers. We also excel in comparison to recent reactive architectures, by achieving an average speed-up of 37% in worst-case reaction times and a speed-up of 38% in average-case reaction times. This has been achieved by utilizing fewer hardware resources, while incurring an average code size increase of 40%.

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Authors’ Affiliations

(1)
Department of Electrical and Computer Engineering, University of Auckland

Copyright

© Simon Yuan et al. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.