Cost-efficient Dragonfly Topology for Large-scale Systems

Abstract

It is more efficient to use increasing pin bandwidth by creating high-radix routers with a large number of narrow ports instead of low-radix routers with fewer wide ports. Building networks using high-radix routers lowers cost and improves performance, but also presents many challenges. The dragonfly topology minimizes network cost by reducing the number of global channels required.

Citation: Cost-efficient Dragonfly Topology for Large-scale Systems, John Kim, William J. Dally, Steve Scott, Dennis Abts, IEEE Micro, vol. Vol 29, Issue 1 (Jan/Feb 2009) (2009), pp. 33-40.

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