Tabu search based cells placement in nanofabric architectures with restricted connectivity

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

New advances in nano-electronics have led to the introduction of CMOL (CMOS/Nano-devices hybrid) circuits which consists of an overlay of a nanowires over a CMOS stack. CMOL circuits can implement a netlist of NOR gates and Inverters using diode-like nanodevices. CMOL has inherently restricted connectivity due to limited nanowires length. Therefore connectivity of the circuit's elements is constrained to be within a certain radius, else an intermediary buffers are required. In this paper we present a Tabu search (TS) algorithm to address cells placement problem in CMOL. The Heuristic is engineered to provide feasible circuit implementations by efficient exploration of search space. Empirical results for ISCAS'89 benchmarks are compared with previous solutions using GA, MA, and LRMA heuristics. Results show that in almost all cases, TS exhibits more intelligent search of the solutions subspace, and is able to find better solutions. For all tested benchmarks over 90% reduction in average CPU processing time when compared with best published techniques was obtained.

Original languageEnglish
Title of host publicationProceedings of the 14th International Symposium on Quality Electronic Design, ISQED 2013
Pages487-493
Number of pages7
DOIs
StatePublished - 2013

Publication series

NameProceedings - International Symposium on Quality Electronic Design, ISQED
ISSN (Print)1948-3287
ISSN (Electronic)1948-3295

Keywords

  • CMOL
  • Combinatorial Optimization
  • Search Heuristics
  • Tabu Search
  • VLSI
  • assignment
  • nanofabric

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality

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