KLAT2's flat neighborhood network

H. G. Dietz, T. I. Mattox

Research output: Contribution to conferencePaperpeer-review

11 Scopus citations


KLAT2, Kentucky Linux Athlon Testbed 2, is a cluster of 64 (plus two ''hot spare'') 700MHz AMD Athlon PCs. The raw compute speed of the processors justifies calling the system a supercomputer, but these fast nodes must be mated with a high-performance network in order to achieve the balance needed to obtain speed-up on real applications. Usually, cluster networks are built by combining the fastest available NICs and switching fabric, making the network expensive. Instead, KLAT2 uses a novel ''Flat Neighborhood'' network topology that was designed by a genetic algorithm (GA). A total of about $8,100 worth of 100Mb/s Fast Ethernet NICs, switches, and Cat5 cable, allows KLAT2's network to deliver both single-switch latency for any point-to-point communication and up to 25.6Gb/s bisection bandwidth. This paper describes how this new network architecture was derived, how it is used, and how it performs.

Original languageEnglish
StatePublished - 2000
Event4th Annual Linux Showcase and Conference 2000, ALS 2000 - Atlanta, United States
Duration: Oct 10 2000Oct 14 2000


Conference4th Annual Linux Showcase and Conference 2000, ALS 2000
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© ALS 2000.

ASJC Scopus subject areas

  • Computer Science Applications
  • Information Systems
  • Hardware and Architecture
  • Software


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