On deadlocks in interconnection networks

  • Authors:

  • Timothy Mark Pinkston;Sugath Warnakulasuriya

  • Affiliations:

  • SMART Interconnects Group, EE-System Dept., University of Southern California, Los Angeles, CA;SMART Interconnects Group, EE-System Dept., University of Southern California, Los Angeles, CA

  • Venue:
  • Proceedings of the 24th annual international symposium on Computer architecture
  • Year:
  • 1997

Quantified Score

Hi-index 0.01

Visualization

Abstract

Deadlock avoidance-based and deadlock recovery-based routing algorithms have been proposed in recent years without full understanding of the likelihood and characteristics of actual deadlocks in interconnection networks. This work models the interrelationships between routing freedom, message blocking, correlated resource dependencies and deadlock formation. We empirically show that increasing routing freedom, as achieved by allowing unrestricted routing over multiple virtual channels, makes deadlocks highly improbable and reduces the likelihood of other types of correlated message blocking behavior that can degrade performance. Our results further substantiate that recovery-based routing algorithms have a higher potential performance advantage over deadlock avoidance-based routing algorithms which, inherently, allow less routing freedom.