The bandwidth and latency requirements of modern datacenter applications have led
researchers to propose various topology designs using static, dynamic demand-oblivious …

While prior work has explored many proposed datacenter designs, only two designs, Clos-
based and expander-based, are generally considered practical because they can scale …

High-radix, low-diameter dragonfly networks will be a common choice in next-generation
supercomputers. Preliminary studies show that random job placement with adaptive routing …

The dragonfly topology is a popular choice for building high-radix, low-diameter, hierarchical
networks with high-bandwidth links. On Cray installations of the dragonfly network, job …

This paper presents an evaluation and comparison of three topologies that are popular for
building interconnection networks in large-scale supercomputers: torus, fat-tree, and …

The Dragonfly topology provides low-diameter connectivity for high-performance computing
with all-to-all global links at the inter-group level. Our traffic matrix characterization of various …

Dragonfly interconnect is a crucial network technol-ogy for supercomputers. To support
exascale systems, network resources are shared such that links and routers are not …

The fat-tree topology is one of the most commonly used network topologies in HPC systems.
Vendors support several options that can be configured when deploying fat-tree networks on …

High-radix interconnects such as Dragonfly and its variants rely on adaptive routing to
balance network traffic for optimum performance. Ideally, adaptive routing attempts to …

In this paper we explore network topologies suitable for future exascale systems that need to
support over fifty thousand endpoints. With the increased necessity to use optics at higher …