一种应用于多路直连CMP的混合一致性协议

发布时间：2018-01-13 18:40

本文关键词：一种应用于多路直连CMP的混合一致性协议　出处：《计算机工程》2017年07期 　论文类型：期刊论文

【摘要】：Cache一致性协议对系统性能和带宽需求具有重要影响,而当前广泛采用的广播协议带宽需求较高,目录协议访存延迟较大,均不适用于国产服务器CPU直连接口带宽较低及延迟较大的应用场景。针对上述问题,基于Token广播协议和目录协议,设计混合一致性协议,采用Simics结合GEM S搭建多路直连片上多核处理器仿真系统,通过运行SPLASH-2测试协议的相关性能。实验结果表明,混合协议的系统性能优于目录协议,与Token协议相比,混合协议以较小的性能代价,大幅降低片间通信带宽需求,且在带宽资源受限系统中具有更好的系统性能。
[Abstract]:Cache consistency protocol has an important impact on the system performance and bandwidth requirements, but the current widely used broadcast protocol has a high bandwidth demand, and the directory protocol has a large memory access delay. It is not suitable for the domestic server with low bandwidth and long delay of CPU direct connection port. In view of the above problems, based on the Token broadcast protocol and directory protocol, a hybrid consistency protocol is designed. Simics and GEM S are used to build a multi-core processor simulation system. The performance of the protocol is tested by running SPLASH-2. The experimental results show that. The performance of hybrid protocol is better than that of directory protocol. Compared with Token protocol, hybrid protocol greatly reduces the bandwidth requirement of inter-chip communication with lower performance cost. And it has better system performance in bandwidth resource constrained system.
【作者单位】：上海高性能集成电路设计中心;
【基金】：“核高基”重大专项(2013ZX0102-8001-001-001)
【分类号】：TP332;TP333
【正文快照】： 中文引用格式:王云霏,王飙,李媛,等.一种应用于多路直连CMP的混合一致性协议[J].计算机工程,2017,43(7):38-43.英文引用格式:Wang Yunfei,Wang Biao,Li Yuan,et al.A Hybrid Coherence Protocol Applied to Multi-channel DirectConnection CM P[J].Computer Engineering,2017

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