Deflection routing in 3d network-on-chip with limited vertical bandwidth

Jinho Lee, Dongwoo Lee, Sunwook Kim, Kiyoung Choi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This article proposes a deflection routing for 3D NoC with serialized TSVs for vertical links. Compared to buffered routing, deflection routing provides area-and power-efficient communication and little loss of performance under low to medium traffic load. Under 3D environments, the deflection routing can yield even better performance than buffered routing when key aspects are properly taken into account. However, the existing deflection routing technique cannot be directly applied because the serialized TSV links will take longer time to send data than ordinary planar links and cause many problems. A naive deflection through a TSV link can cause significantly longer latency and more energy consumption even for communications through planar links. This article proposes a method to mitigate the effect and also solve arising deadlock and livelock problems. Evaluation of the proposed scheme shows its effectiveness in throughput, latency, and energy consumption.

Original languageEnglish
Article number50
JournalACM Transactions on Design Automation of Electronic Systems
Volume18
Issue number4
DOIs
Publication statusPublished - 2013 Oct 1

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All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design
  • Electrical and Electronic Engineering

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