Cycle-accurate macro-models for RT-level power analysis

Qing Wu, Qinru Qiu, Massoud Pedram, Chih Shun Ding

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


In this paper, we present a methodology and techniques for generating cycle-accurate macro-models for registertransfer (RT)-level power analysis. The proposed macro-model predicts not only the cycle-by-cycle power consumption of a module, but also the moving average of power consumption and the power profile of the module over time. We propose an exact power function and approximation steps to generate our power macro-model. First-order temporal correlations and spatial correlations of up to order three are considered in order to improve the estimation accuracy. A variable reduction algorithm is designed to eliminate the "insignificant" variables using a statistical sensitivity test. Population stratification is employed to increase the model fidelity. Experimental results show our macromodels with 15 or fewer variables, exhibit <5% error for average power and <20% errors for cycle-by-cycle power estimation compared to circuit simulation results using Powermill.

Original languageEnglish (US)
Pages (from-to)520-528
Number of pages9
JournalIEEE Transactions on Very Large Scale Integration (VLSI) Systems
Issue number4
StatePublished - 1998
Externally publishedYes


  • Cycle-accurate
  • Low power
  • Macro-model
  • Power estimation
  • Regression
  • Statistical
  • VLSI

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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