sponsored byIEEEACMThe International Conference for High Performance 
Computing, Networking, Storage and Analysis
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SCHEDULE: NOV 16-21, 2014

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Slim Fly: A Cost Effective Low-Diameter Network Topology

SESSION: Networks

EVENT TYPE: Papers, Best Student Paper Finalists

TIME: 4:30PM - 5:00PM


AUTHOR(S):Maciej Besta, Torsten Hoefler



We introduce a high-performance cost-effective network
topology called Slim Fly that approaches the theoretically
optimal network diameter. Slim Fly is based on graphs that
approximate the solution to the degree-diameter problem. We
analyze Slim Fly and compare it to both traditional and state-of-the-art networks. Our analysis shows that Slim Fly has significant
advantages over other topologies in latency, bandwidth, resiliency,
cost, and power consumption. Finally, we propose deadlock-free
routing schemes and physical layouts for large computing centers
as well as a detailed cost and power model. Slim Fly enables
constructing cost effective and highly resilient datacenter and
HPC networks that offer low latency and high bandwidth under
different HPC workloads such as stencil or graph computations.

Chair/Author Details:

Kelly Shaw (Chair) - University of Richmond

Maciej Besta - ETH Zurich

Torsten Hoefler - ETH Zurich

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Paper provided by the ACM Digital Library

Paper also available from IEEE Computer Society