基于多虚空间多重映射技术的并行操作系统

A Parallel Operating System Based on Multi-Virtual-Space and Multi-Mapping Technology

高性能计算机系统的可扩展性是系统设计的一大难题 ,NUMA(non-uniform memory architecture)结构正是为了解决共享存储体系的可扩展性问题而提出来的 .研究和实践表明 ,整机系统的可扩展性与操作系统的结构有着密切的关系 .典型的多处理机操作系统通常采用两种结构 ,基于共享的单一核心结构以及基于消息的多核心结构 .通过分析得出结论认为 ,这两种结构都不能很好地适应可扩展并行机尤其是 NUMA结构并行机的需求 .针对存在的问题 ,提出了新的结构设计思想 :多虚空间多重映射与主动消息相结合 .测试和运行结果显示 。

The scalability of system is a puzzle to design high performance computers. NUMA (non -uniform memory architecture) architecture is proposed for scalable system underlying a shared memory pattern. Research and practice results show that the scalability of system tightly correlates with that of the operating system. Usually, two structures of operating system are employed in multiprocessor systems, monolithic based on shared memory and multi kernel based on message passing. However, both of them cannot fully fit scalable parallel computers, especially MPP systems with NUMA architecture. In this paper, the problems in two structures are analyzed, a new structure, multi virtual space and multi mapping with active message, is proposed. The test and practice results show that the new structure is successful in the scalability of system. This paper introduces detailedly the implementation of the structure in a MPP system with NUMA architecture.