多核处理机系统Cache管理技术研究现状

多核处理器的Cache结构设计和管理是微处理器设计领域的重要问题。当前主流的商用微处理器均采用共享最后一级Cache的系统结构,而片上最后一级Cache的性能通常对处理器的性能影响较大,因此共享Cache的管理问题成为当前研究热点。本文首先介绍当前主流多核处理器及其设计问题,然后介绍了共享Cache管理的三项重要技术:线程调度、NUCA和Cache划分,最后给出多核处理器Cache管理技术的发展方向。

Research Development of the ChipMulti-Processor Cache Management

It is important to design and manage the cache resources in a chip multi processor.Currently,mainstream commercial CPUs share their last level cache while the performance of the last level caches has great impact on the CPU performance.Therefore,shared cache management becomes an active research area.In this paper,firstly,we introduce the design challenge of the CMP cache design and the processors from the mainstream vendors.Secondly,we put forward three key technologies of shared cache management: thread scheduling,NUCA and cache partitioning.Finally,we conclude our paper and point out the future trend of the CMP cache design and management.