Traffic-independent multi-path routing for high-throughput data center networks

Ryuta Kawano, Ryota Yasudo, Hiroki Matsutani, Michihiro Koibuchi, Hideharu Amano

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Network throughput has become an important issue for big-data analysis on Warehouse-Scale Computing (WSC) systems. It has been reported that randomly-connected inter-switch networks can enlarge the network throughput. For irregular networks, a multi-path routing method called k-shortest path routing is conventionally utilized. However, it cannot efficiently exploit longer-than-shortest paths that would be detour paths to avoid bottlenecks. In this work, a novel routing method called koptimized path routing to achieve high throughput is proposed for irregular networks. We introduce a heuristic to select detour paths that can avoid bottlenecks in the network to improve the average-case network throughput. Experimental results by network simulation show that the proposed k-optimized path routing can improve the saturation throughput by up to 18.2% compared to the conventional k-shortest path routing. Moreover, it can reduce the computation time required for optimization to 1/2760 at a minimum compared to our previously proposed method.

Original languageEnglish
Pages (from-to)2471-2479
Number of pages9
JournalIEICE Transactions on Information and Systems
Issue number12
Publication statusPublished - 2020 Dec 1


  • Data centers
  • Interconnection networks
  • Warehouse-scale computing

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence


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