Architectural Support for Effective User-Level Data Transport

为有效的用户级数据传输提供体系结构支持摘要该项目的目标是使微处理器能够更好地利用I/O和网络方面的最新性能进步。它寻求通过添加由多个简单处理器集群和适当的互连组成的子系统来实现通用微处理器上的下一代I/O和网络服务，以处理网络和I/O流量，而不会使中央处理器单元(CPU)核心或其操作系统成为人为的瓶颈。研究活动将通过硬件原型、软件模拟和应用程序开发相结合的方式对我们提出的系统进行原型、演示和评估。研究直接解决了所有现代信息技术系统普遍存在的一个关键问题：虽然商品CPU和网络性能在过去十年中各自独立地获得了显著的性能改进，但它们的结合使用导致了一个效率低下的系统。在其他工作负载中，现代CPU在传统计算工作负载上实现了承诺，现代网络系统对传统通信任务也做了同样的工作，但组合系统无法支持新兴服务(如大规模存储系统、内容扫描系统和按需媒体)，而不能达到此类高性能系统预期的性能水平。核心问题在于CPU和网络之间的硬件和软件接口。我们建议的研究旨在重新组织CPU，以更好地支持高性能网络和I/O，并使高级网络和I/O服务能够在通用商用系统上激增。

Architectural Support for Effective User-Level Data TransportAbstractThe objective of this project is to enable microprocessors to better utilize recent performance advances in I/O and networking. It seeks to enable next-generation I/O and networking services on general-purpose microprocessors by the addition of a subsystem consisting of multiple clusters of simple processors, and appropriate interconnects, to handle network and I/O traffic without making the central processor unit (CPU) core, or its operating system, an artificial bottleneck. The research activities will prototype, demonstrate and evaluate our proposed system though a combination hardware prototypes, software simulation and application development.The research directly addresses a critical problem common to all modern information technology systems: while commodity CPU and network performance have each independently seen dramatic performance improvements over the last decade, their combined use results in an inefficient system. In other workloads, modem CPUs achieve their promise on traditional computing workloads, and modern networking systems do the same for traditional communications tasks, but a combined system is unable to support emerging services (such as large-scale storage systems, content scanning systems and on-demand media) at the performance levels expected for such otherwise high-performance systems. The central problem lies in the hardware and software interfaces between the CPU and the network. Our proposed research aims to re-organize the CPU to better support high-performance networks and I/O and enable a proliferation of advanced network and I/O services on general-purpose commodity systems.