Design optimization and space minimization considering timing and code size via retiming and unfolding

Qingfeng Zhuge, Chun Xue, Zili Shao, Meilin Liu, Meikang Qiu, Edwin H.M. Sha

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


The increasingly complicated DSP processors and applications with strict timing and code size constraints require design automation tools to consider multiple optimizations such as software pipelining and loop unfolding, and their effects on multiple design parameters. This paper presents an Integrated Framework for Design Optimization and Space Minimization (IDOM) toward finding the minimum configuration satisfying timing and code size constraints. We show an effective way to reduce the design space to be explored through the study of the fundamental properties and relationships among retiming function, unfolding factor, timing, and code size. We present theorems to show that a small set of feasible unfolding factors can be obtained effectively to produce high-quality designs. The IDOM algorithm is proposed to generate a minimal configuration of the design by integrating software pipelining, unfolding, and code size reduction techniques. The experimental results on a set of DSP benchmarks show the efficiency and effectiveness of our technique.
Original languageEnglish
Pages (from-to)173-183
Number of pages11
JournalMicroprocessors and Microsystems
Issue number4
Publication statusPublished - 6 Jun 2006
Externally publishedYes

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications
  • Artificial Intelligence


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