Configurable links for runtime adaptive on-chip communication

  • Authors:
  • Mohammad Abdullah Al Faruque;Thomas Ebi;Jörg Henkel

  • Affiliations:
  • University of Karlsruhe, Karlsruhe, Germany;University of Karlsruhe, Karlsruhe, Germany;University of Karlsruhe, Karlsruhe, Germany

  • Venue:
  • Proceedings of the Conference on Design, Automation and Test in Europe
  • Year:
  • 2009

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Abstract

Reliability concerns associated with upcoming technology nodes coupled with unpredictable system scenarios resulting from increasingly complex systems require considering runtime adaptivity in all possible parts of future on-chip systems. We are presenting a novel configurable link which can change its supported bandwidth on-demand at runtime (2X-Links) for an adaptive on-chip communication architecture. We have evaluated our results using real-time multi-media and the E3S application benchmark suits. Our 2X-Links provide a higher throughput of up to 36%, with an average throughput increase of 21.3%, compared to the Normal-Full-Duplex-Links [12], [14], [17], [20] and keep performance-related guarantees with as low as 50% of the Normal-Full-Duplex-Links capacity. Our simulation shows when some links fail, the NoC with 2X-Links can recover from these faults with an average probability of 82.2% whereas these faults would be fatal for the Normal-Full-Duplex-Links.