Generation of yield-aware Pareto surfaces for hierarchical circuit design space exploration

  • Authors:
  • Saurabh K. Tiwary;Pragati K. Tiwary;Rob A. Rutenbar

  • Affiliations:
  • Carnegie Mellon University, Pittsburgh, PA;BIT Mesra, Jharkhand India;Carnegie Mellon University, Pittsburgh, PA

  • Venue:
  • Proceedings of the 43rd annual Design Automation Conference
  • Year:
  • 2006

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Abstract

Pareto surfaces in the performance space determine the range of feasible performance values for a circuit topology in a given technology. We present a non-dominated sorting based global optimization algorithm to generate the nominal pareto front efficiently using a simulator-in-a-loop approach. The solutions on this pareto front combined with efficient Monte Carlo approximation ideas are then used to compute the yield-aware pareto fronts. We show experimental results for both the nominal and yield-aware pareto fronts for power and phase noise for a voltage controlled oscillator (VCO) circuit. The presented methodology computes yield-aware pareto fronts in approximately 5-6 times the time required for a single circuit synthesis run and is thus practically efficient. We also show applications of yield-aware paretos to find the optimal VCO circuit to meet the system level specifications of a phase locked loop.