GADM:一种环丛型并行数据库机体系结构

GADM: The Ring-Forest-Structured Architecture of a Parallel Database Machine

本文提出一种基于通用硬件的多机环丛型并行数据库机体系结构GADM方案。在GADM中,通过环型局部网将多个紧密耦合的以树型多机构成的数据库器相连,形成了一个分布并行处理的环丛型数据库机,每个数据库器又包含多个子树处理基元。子树处理基元是以共享内存方式实现紧密耦合的两层树结构的多机子系统,它带有多个磁盘,可并行I/O。GADM在多个结构层次上实现了处理高并行度,具有较佳性能价格比和较大实用性。文中还对GADM的结构并行性进行了分析,并定量地给出了GADM的合理消除性能瓶颈的设计原则。

This paper presents a plan of ageneral-hardware-oriented parallel database machine GADM, whose architecture is ring-forest structure. In the GADM. several tree-structured database engines are connected by the ring local network, so that a distributed paralle: database machine is constructed Each database engine includes multiple sub tree processing elements The element is a small multiprocessor subsystem with two-level-tree structure being tightly coupled by the sharing memories, and the element also involves multiple disks for parallel I/O The GADM is of better performance/cost ratio and better practicability The high parallelism can be achieved in multi levels of the architecture of the GADM. In this paper, the architectural parallelism of the GADM is analyzed, and the design principle for the GADM. which can eliminate the performance bottlenecks, is also given quantitatively