面向多核的共享多通道Cache体系及原型构建

为构建一个合理高效的多核系统通信架构及数据存储路径,提出了一种使用多通道Cache的可扩展可配置多核体系(Architecture Utilizing Multi-Channel Cache,AUMCC),并基于FPGA利用LEON3处理器建立了该体系的原型平台.AUMCC体系中采用多通道Cache作为L2级Cache,并且基于多通道Cache的不同访问模式,AUMCC可以配置成私有L2 Cache或共享L2 Cache两种结构.原型系统中模拟测试结果表明,相比传统共享L2Cache体系,性能提高了37%,同时AUMCC的系统层次化特性确保了良好的系统扩展性。

CMP-oriented shared multi-channel Cache architecture and its prototype construction

To construct a rational and efficient communication structure and a high-efficient data storage path for CMP system,a kind of scalable and configurable CMP architecture utilizing multi-channel Cache(AUMCC) is proposed in this article and its prototype system is established based on FPGA and LOEN3 processor.Multi-channel Cache is adopted as L2 Cache in AUMCC.AUMCC can be configured to be private L2 Cache structure or shared L2 Cache structure based on the access mode of multi-channel Cache.Simulation and testing results show that AUMCC architecture can achieve about 37% performance improvement compared with shared L2 Cache BUS-centric(SCA) architecture,and the hierarchy characteristic of AUMCC assures the good scalability.