龙芯GS464E处理器核架构设计

Scientia Sinica Informationis(2015)

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Abstract
龙芯GS464E是龙芯公司最新推出的高性能处理器核架构.在本文中,将介绍GS464E架构的核心特性.相比于之前的GS464架构,重点强化了访存性能和分支预测准确率,实现了MIPS DSP指令集和虚拟机支持.增大了处理器中各项队列的项数,并增大了Cache容量和TLB容量.访存子系统拥有3级Cache结构,每一级都采用LRU替换策略,可以支持多核缓存一致性协议.经过上述强化设计,GS464E处理器核已成为一个创新性的高性能处理器核架构.
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Key words
performance of memory access,Cache coherence,processor core,multi-core processor,branch prediction
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