Performance-driven architectural synthesis for distributed register-file microarchitecture with inter-island delay

Juinn Dar Huang, Chia I. Chen, Wan Ling Hsu, Yen Ting Lin, Jing Yang Jou

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In deep-submicron era, wire delay is becoming a bottleneck while pursuing higher system clock speed. Several distributed register (DR) architectures are proposed to cope with this problem by keeping most wires local. In this article, we propose the distributed register-file microarchitecture with inter-island delay (DRFM-IID). Though DRFM-IID is also one of the DR-based architectures, it is considered more practical than the previously proposed DRFM, in terms of delay model. With such delay consideration, the synthesis task is inherently more complicated than the one without inter-island delay concern since uncertain interconnect latency is very likely to seriously impact on the whole system performance. Therefore we also develop a performance-driven architectural synthesis framework targeting DRFM-IID. Several factors for evaluating the quality of results, such as number of inter-island transfers, timing-criticality of transfer, and resource utilization balancing, are adopted as the guidance while performing architectural synthesis for better optimization outcomes. The experimental results show that the latency and the number of inter-cluster transfers can be reduced by 26.9% and 37.5% on average; and the latter is commonly regarded as an indicator for power consumption of on-chip communication.

Original languageEnglish
Pages (from-to)559-566
Number of pages8
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Issue number2
StatePublished - Feb 2012


  • Behavioral synthesis
  • Distributed register-file
  • Low-power
  • Performance optimization
  • Resource binding
  • Scheduling


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