Achieving and Validating Higher Dependability Through Host and Network Processor Collaboration

该项目的目的是开发新的容错技术，利用高速网络系统中主机和网络处理器之间的协同作用，并为它们的验证和有效性评估提供工具。我们的项目将包括以下任务：*构建一个网络和主机处理器之间具有共生关系的分层体系结构，以便提供容错能力。*开发扩展的故障注入能力，以便研究和充分了解网络体系结构中的故障传播和检测过程。*开发一个工具来验证我们的故障检测和恢复策略，并使用传统的和专门构建的可靠性度量来评估它们在联网系统中的有效性。*将我们的容错层和评估和验证工具集成到NASA试验台中。该项目将提供更好地利用现代网络体系结构的资源进行故障检测和恢复的技术。这类技术对空间任务至关重要，因为空间任务的特点是需要对持续数年、资源严重受限的应用程序的任务的计算和联网资源进行适当管理。

The purpose of the proposed project is developing novel fault-tolerance techniques which exploit the synergy between the host and network processors in high-speed networked systems, and providingtools for their validation and the assessment of their effectiveness.Our project will include the following tasks:* Construct a layered architecture with a symbiotic relationship between the network and host processors so that fault toleranceis provided.* Develop expanded fault injection capabilities in orderto study and fully understand the fault propagation and detectionprocess in a network architecture.* Develop a tool for validating our fault detection and recovery policies and evaluate their effectiveness in a networked system usingboth traditional and specially constructed dependability measures. * Integrate our fault tolerance layer and the evaluation andvalidation tool into the NASA testbed. This project will deliver techniques to better utilize the resources of modern network architectures for fault detection and recovery. Such techniques are crucial in space missions, which are characterizedby the need for a proper management of computational and networking resources for missions lasting years in severely resource-constrained applications.