Guohui Wang

TL;DR: The results show that even though the data center network is lightly utilized, virtualization can still cause significant throughput instability and abnormal delay variations.

TL;DR: This work proposes a hybrid packet and circuit switched data center network architecture (or HyPaC) which augments the traditional hierarchy of packet switches with a high speed, low complexity, rack-to-rack optical circuit-switched network to supply high bandwidth to applications.

TL;DR: This article describes the architecture and implementation of Meridian, an SDN controller platform that supports a service-level model for application networking in clouds, and discusses some of the key challenges in the design and implementation, including how to efficiently handle dynamic updates to virtual networks, orchestration of network tasks on a large set of devices, and how Meridian can be integrated with multiple cloud controllers.

TL;DR: This study uses Hadoop as an example to discuss the integrated network control architecture, job scheduling, topology and routing configuration mechanisms for Hadoops, and suggests that such an integrated control has great potential to improve application performance with relatively small configuration overhead.

TL;DR: A simple model of the Internet delay space is derived that preserves the relevant metrics far better than existing models, allows for a compact representation, and can be used to synthesize delay data for simulations and emulations at a scale where direct measurement and storage are impractical.