SC13 Home > SC13 Schedule > SC13 Presentation - A New Routing Scheme for Jellyfish and its Performance with HPC Workloads

SCHEDULE: NOV 16-22, 2013

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A New Routing Scheme for Jellyfish and its Performance with HPC Workloads

SESSION: Performance Analysis of Applications at Large Scale

EVENT TYPE: Papers

TIME: 11:30AM - 12:00PM

SESSION CHAIR: Darren J. Kerbyson

AUTHOR(S):Xin Yuan, Santosh Mahapatra, Wickus Nienaber, Scott Pakin, Michael Lang

ROOM:201/203

ABSTRACT:
The jellyfish topology where switches are connected using a random graph has recently been proposed for large scale data-center networks. It has been shown to offer higher bisection bandwidth and better permutation throughput than the corresponding fat-tree topology with a similar cost. In this work, we propose a new routing scheme for jellyfish that out-performs existing schemes by more effectively exploiting the path diversity, and comprehensively compare the performance of jellyfish and fat-tree topologies with HPC workloads. The results indicate that both jellyfish and fat-tree topologies offer comparable high performance for HPC workloads on systems that can be realized by 3-level fat-trees using the current technology and the corresponding jellyfish topologies with similar costs. Fat-trees are more effective for smaller systems while jellyfish is more scalable.

Chair/Author Details:

Darren J. Kerbyson (Chair) - Pacific Northwest National Laboratory

Xin Yuan - Florida State University

Santosh Mahapatra - Florida State University

Wickus Nienaber - Florida State University

Scott Pakin - Los Alamos National Laboratory

Michael Lang - Los Alamos National Laboratory

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The full paper can be found in the ACM Digital Library