QoS provisioning in clusters Conference Paper uri icon


  • Design of high performance cluster networks (routers) with Quality-of-Service (QoS) guarantees is becoming increasingly important to support a variety of multimedia applications, many of which have real-time constraints. Most commercial routers, which are based on the wormhole-switching paradigm, can deliver high performance, but lack QoS provisioning. In this paper, we present a pipelined wormhole router architecture that can provide high and predictable performance for integrated traffic in clusters. We consider two different implementations—a non-preemptive model and a more aggressive preemptive model. We also present the design of a network interface card (NIC) based on the Virtual Interface Architecture (VIA) design paradigm to support QoS in the NIC. The QoS capable router and NIC designs are evaluated with a mixed workload consisting of best-effort traffic, multimedia streams, and control traffic. Simulation results of an 8-port router and a (2 Ă— 2) mesh network indicate that the preemptive router can provide better performance than the non-preemptive router for dynamically changing workloads. Co-evaluation of the QoS-aware NIC with the proposed router models shows significant performance improvement compared to that with a traditional NIC without any QoS support.

published proceedings

  • ACM SIGARCH Computer Architecture News

altmetric score

  • 3

author list (cited authors)

  • Yum, K. H., Kim, E. J., & Das, C. R.

citation count

  • 5

complete list of authors

  • Yum, Ki Hwan||Kim, Eun Jung||Das, Chita R

publication date

  • May 2001