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 …

As bytes-per-FLOP ratios continue to decline, communication is becoming a bottleneck for
performance scaling. This paper describes bandwidth steering in HPC using emerging …

Designing efficient interconnects to support high-bandwidth and low-latency communication
is critical toward realizing high performance computing (HPC) and data center (DC) systems …

Recently, large scale cyber physical systems (LS-CPS) leverage network-cores provided by
application providers (APs) to carry out analytics. These CPS-APs uses the automated cloud …

Interference between jobs competing for network bandwidth on a fat-tree cluster can cause
significant variability and degradation in performance. These performance issues can be …

The de-facto standard topology for modern HPC systems and data-centers are Folded Clos
networks, commonly known as Fat-Trees. The number of network endpoints in these …

The era of extremely heterogeneous supercomputing brings with itself the devil of increased
performance variation and reduced reproducibility. There is a lack of understanding in the …

Modern datacenter topologies typically are multi-rooted trees consisting of multiple paths
between any given pair of hosts. Recent load balancing designs focus on making full use of …

Novel low-diameter network topologies such as Slim Fly (SF) offer significant cost and power
advantages over the established Fat Tree, Clos, or Dragonfly. To spearhead the adoption of …

Modern datacenters provide a wide variety of application services, which generate a mix of
delay-sensitive short flows and throughput-oriented long flows, transmitting in the multi-path …