Realisation and Performance of IEEE 1355 DS and HS Link based, High Speed, Low Latency Packet Switching Networks

M. Zhu , D.A. Thornley , J. Pech , B. Martin , N.H. Madsen , R. Heeley , S. Haas , R.W. Dobinson , C.R. Anderson
CERN, 1211 Geneva 23, Switzerland
University of Liverpool, Liverpool, UK
University of Kent, Canterbury, UK
University of Prague, Prague, Czech Republic
RHBNC, University of London, London, UK

Abstract:

We report on the construction of a 1024 node switching network using IEEE 1355 DS link technology. The nodes are interconnected by a switching fabric based on the STC104 packet switch. The system has been designed and constructed in a modular way in order to allow a variety of different network topologies to be investigated. Network throughput and latency have been studied for different topologies under various traffic conditions including those expected within the second level trigger of the ATLAS experiment. Initial experience using 1 Gbaud IEEE 1355 HS links and switches is also presented.

 
• Introduction
• The IEEE 1355 Standard
• The Macramé Network Testbed
• Network topologies
• Network Routing
• Results
  • Comparison of network topologies
  • Network latency for Clos networks
  • Effect of grouped adaptive routing
  • Reliability
  • ATLAS second level trigger traffic
• HS links and Switches
• Conclusions
• References
• About this document ...