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Cost-Efficient Dragonfly Topology for Large-Scale Systems
January/February 2009 (vol. 29 no. 1)
pp. 33-40
John Kim, Northwestern University
William Dally, Stanford University
Dennis Abts, Google

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.

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Index Terms:
dragonfly topology, large-scale systems
John Kim, William Dally, Steve Scott, Dennis Abts, "Cost-Efficient Dragonfly Topology for Large-Scale Systems," IEEE Micro, vol. 29, no. 1, pp. 33-40, Jan.-Feb. 2009, doi:10.1109/MM.2009.5
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