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Publications of Torsten Hoefler
Maciej Besta and Jens Domke and Marcel Schneider and Marek Konieczny and Salvatore Di Girolamo and Timo Schneider and Ankit Singla and Torsten Hoefler:
| | | High-Performance Routing with Multipathing and Path Diversity in Ethernet and HPC Networks
(In IEEE Transactions of Parallel and Distributed Systems, 2021)
AbstractThe recent line of research into topology design
focuses on lowering network diameter. Many low-diameter topologies such as
Slim Fly or Jellyfish that substantially reduce cost, power consumption, and
latency have been proposed. A key challenge in realizing the benefits of
these topologies is routing. On one hand, these networks provide shorter path
lengths than established topologies such as Clos or torus, leading to
performance improvements. On the other hand, the number of shortest paths
between each pair of endpoints is much smaller than in Clos, but there is a
large number of non-minimal paths between router pairs. This hampers or even
makes it impossible to use established multipath routing schemes such as
ECMP. In this work, to facilitate high-performance routing in modern
networks, we analyze existing routing protocols and architectures, focusing
on how well they exploit the diversity of minimal and non-minimal paths. We
first develop a taxonomy of different forms of support for multipathing and
overall path diversity. Then, we analyze how existing routing schemes support
this diversity. Among others, we consider multipathing with both shortest and
non-shortest paths, support for disjoint paths, or enabling adaptivity. To
address the ongoing convergence of HPC and “Big Data” domains, we consider
routing protocols developed for both HPC systems and for data centers as well
as general clusters. Thus, we cover architectures and protocols based on
Ethernet, InfiniBand, and other HPC networks such as Myrinet. Our review will
foster developing future high-performance multipathing routing protocols in
supercomputers and data centers.
Documentsdownload article:  
| | | BibTeX | @article{besta-hpcr,
author={Maciej Besta and Jens Domke and Marcel Schneider and Marek Konieczny and Salvatore Di Girolamo and Timo Schneider and Ankit Singla and Torsten Hoefler},
title={{High-Performance Routing with Multipathing and Path Diversity in Ethernet and HPC Networks}},
year={2021},
booktitle={IEEE Transactions of Parallel and Distributed Systems},
source={http://www.unixer.de/~htor/publications/},
} |
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