KD-90普及型个人高性能计算机系统设计与性能优化

Design and performance optimization of a popular high performance computing system KD-90

报道中国首台采用自主设计研制的龙芯3B 8核处理器的万亿次高性能计算机系统KD-90.该系统具有高计算密度、低功耗、低成本、低占地的特点,其应用SMP→CC-NUMA→Cluster 3级并行体系结构,采用通用协议与专用协议结合的互连网络硬件设计,实现了CC-NUMA机群架构关键技术的突破;应用矢量部件加速技术实现了一种通用处理器与向量协处理器相结合的编程模型.结合体系结构特点和操作系统内核对系统性能优化并进行了性能测试和分析.

First of its kind and designed with 8-core Godson 3B CPU, KD-90 is a teraflops high-performance com- puter system. It has the characteristics of high computing density, low-power usage, low in cost and compact in size. Three parallel hierarchies, such as SMP→CC-NUMA→Cluster, as utilized in KD-90. Both the common communication protocol and the proprietary communication protocol are integrated in the system interconnect de- sign. Therefore, breakthroughs in the performance of the CC-NUMA cluster are achieved. The parallel program- ming model of the system is implemented by the combination of a general-purpose processor and vector coprocessor acceleration technology. The Linpack performance optimization works by means of architectural features and the operating system kernel is discussed in detail.