The search for alternative computational paradigms

Naresh R. Shanbhag, Subhasish Mitra, Gustavode de Veciana, Michael Orshansky, Radu Marculescu, Jaijeet Roychowdhury, Douglas Jones, Jan M. Rabaey

Research output: Contribution to journalArticlepeer-review


Nanometer processes are characterized by extremes of process variations, noise, soft errors, and other nonidealities, which threaten to nullify the intrinsic benefits of scaling. The resulting robustness and energy efficiency problem cannot be addressed in a cost-effective manner solely through advances in manufacturing. Alternative models of computation are needed that thrive in the presence of statistical variations in the underlying device and circuit fabric. This article explores communications-inspired models of computation supported by innovative robust circuit and logic fabric design approaches. These models share the common feature of leveraging dense networks with information exchange and coupling among nodes to enhance robustness without compromising energy efficiency. Promising post-silicon devices such as carbon nanotubes (CNTs) offer an attractive platform on which to build such computational systems. This article identifies opportunities and challenges in designing robust and low-power SoCs in emerging nanoscale process technologies, employing radically new modes of computation.

Original languageEnglish (US)
Pages (from-to)334-343
Number of pages10
JournalIEEE Design and Test of Computers
Issue number4
StatePublished - 2008


  • CNT
  • Computational efficiency
  • Computational modeling
  • Computing
  • Couplings
  • Energy efficiency
  • Logic
  • Low power
  • Models
  • Nanometers
  • Nanoscale
  • Networks
  • Oscillators
  • Robust
  • Robustness

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Electrical and Electronic Engineering


Dive into the research topics of 'The search for alternative computational paradigms'. Together they form a unique fingerprint.

Cite this