Generalized Theory for Deadlock-Free Adaptive Wormhole Routing and its Application to Disha Concurrent

  • Authors:
  • Anjan K. Venkatramani;Timothy Mark Pinkston;José Duato

  • Affiliations:
  • -;-;-

  • Venue:
  • IPPS '96 Proceedings of the 10th International Parallel Processing Symposium
  • Year:
  • 1996

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Abstract

This paper generalizes a theory for deadlock-free adaptive wormhole routing by considering a mixed set of resources: edge and central buffers. This generalized theory is then applied to a concurrent version of Disha deadlock-recovery which relaxes the sequential recovery requirement for simultaneous recovery from deadlocks. The proposed extension to Disha does not necessitate any additional resource cost; rather it serves to eliminate the requirement of mutual exclusive access to the deadlock-free lane implemented by a Token. With this extension, Disha Concurrent remains applicable to any topology with a Hamiltonian path including k-ary n-cube networks and is also applicable to tree-based networks.