以太网并行处理程序退避方法分析

摘要

In many parallel processing applications, task times have relatively little variability. Accordingly, many nodes will complete a task at approximately the same time. If the application is run on an Ethernet, the near-simultaneity of the task completion times implies that when the tasks attempt to communicate with some central task manager, they will bump into each other. This in turn can cause a major slowdown in communication, as the Ethernet hardware generates unnecessarily long backoff times. The work here will analyze a solution to this problem.%　　许多并行处理应用程序和任务时间相对变化很小。因此，许多节点在几乎同一时间内完成任务。如果应用程序是运行在以太网上，同时完成任务意味着，当任务试图进行与中心任务管理器进行通信时，多任务发生互相碰撞。反过来又在通信中造成重大的延迟，造成以太网硬件生成不必要的时间补偿。我们的工作将分析这一问题并提出解决方案。