Video: Network Architecture Trends

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In this video from the recent Argonne Training Program on Extreme-Scale Computing, Pavan Balaji from Argonne National Laboratory presents: Network Architecture Trends.

General Trends in System Architecture:

  • Number of nodes is increasing, but at a moderate pace
  • Number of cores/threads on a node is increasing rapidly
  • Each core is not increasing in speed (clock frequency)
  • Chip logic complexity decreasing (in-order instructions, no pipelining, no branch prediction)
  • What does this mean for networks?
    • More cores will drive the network
    • More sharing of the network infrastructure
    • The aggregate amount of communication from each node will increase moderately, but will be divided into many smaller messages
    • A single core will not be able to drive the network fully


The Argonne Training Program on Extreme-Scale Computing (ATPESC) provides intensive, two-week training on the key skills, approaches, and tools to design, implement, and execute computational science and engineering applications on current high-end computing systems and the leadership-class computing systems of the future.

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