基于并行PC结构的操作系统模型研究

The Operating System Model for Parallel PC Architecture

1.引言 并行PC是针对未来高端个人机、工作站设计的,面向实时多媒体应用的新型计算机体系结构[1].传统计算机采用总线结构,以主存为中心,采用集中式控制策略,其缺陷在于总线结构形成通信瓶颈,集中式控制造成控制瓶颈,成为限制计算机性能进一步提高的障碍.并行PC是针对传统计算机结构的缺陷,综合考虑将来的应用需求而提出的一种以高速交换网络为中心、采用分散控制策略的新型体系结构.这种新结构能够消除系统的通信瓶颈和控制瓶颈,使系统性能得到进一步的优化.

Parallel PC is a novel computer architecture,in which the data-exchanging network becomes the kernel of whole system,and the distributed control theme is adopted to realize the autonomy of all the I/O devices. This paper proposes a new operating system model for the parallel PC architecture, which has a multi-kernel structure,and supports QoS(Quality of Service). In this paper,the overall structure and some important problems,such as the concept of abstract device,the communication and control procedures between the CPU-Memory object and the device objects,and the QoS in the operating system,etc,are discussed thoroughly,and some design schemes are proposed correspondingly.