Efficient Thermal Placement of Standard Cells in 3D ICs using a Force Directed Approach

  • Authors:
  • Brent Goplen;Sachin Sapatnekar

  • Affiliations:
  • University of Minnesota, Minneapolis;University of Minnesota, Minneapolis

  • Venue:
  • Proceedings of the 2003 IEEE/ACM international conference on Computer-aided design
  • Year:
  • 2003

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Abstract

As the technology node progresses, thermal problems arebecoming more prominent especially in the developingtechnology of three-dimensional (3D) integrated circuits. Thethermal placement method presented in this paper uses an iterativeforce-directed approach in which thermal forces direct cells awayfrom areas of high temperature. Finite element analysis (FEA) isused to calculate temperatures efficiently during each iteration.Benchmark circuits produce thermal placements with both lowertemperatures and thermal gradients while wirelength is minimally affected.