A Network Congestion-Aware Memory Controller

  • Authors:
  • Dongki Kim;Sungjoo Yoo;Sunggu Lee

  • Affiliations:
  • -;-;-

  • Venue:
  • NOCS '10 Proceedings of the 2010 Fourth ACM/IEEE International Symposium on Networks-on-Chip
  • Year:
  • 2010

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Abstract

Network-on-chip and memory controller become correlated with each other in case of high network congestion since the network port of memory controller can be blocked due to the (back-propagated) network congestion. We call such a problem network congestion-induced memory blocking. In order to resolve the problem, we present a novel idea of network congestion-aware memory controller. Based on the global information of network congestion, the memory controller performs (1) congestion-aware memory access scheduling and (2) congestion-aware network entry control of read data. The experimental results obtained from a 5x5 tile architecture show that the proposed memory controller presents up to 18.9% improvement in memory utilization.