Keynote

摘要

This talk provides an overview of recent research results in high-performance networking. We discuss the history and design tradeoffs for large-scale topologies following the growing demand for low latency and high throughput at lowest cost. We then introduce a high-performance cost-effective network topology called Slim Fly that approaches the theoretically optimal network diameter. We analyze Slim Fly and compare it to both traditional and state-of-the-art networks. Our analysis shows that Slim Fly has significant advantages over other topologies in latency, bandwidth, resiliency, cost, and power consumption. After solving the topology problem, we focus on the endpoint. Today's network cards contain rather powerful processors optimized for data movement. However, these devices are limited to fixed functions, such as remote direct memory access. We describe sPIN, a portable programming model to offload simple packet processing functions to the network card. The portable packet-processing network acceleration sPIN model is similar to compute acceleration with CUDA or OpenCL. We demonstrate several use-cases for which network acceleration enables an eco-system that can significantly speed up applications and system services. Both of these recent results will guide design and implementation of future data-center and HPC networks.