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参考: 能效优先:eyeriss CNN加速器的设计思路
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针对CNN,提出了新型的数据流模式,row-stationary, 挖掘数据重用的潜力,最小化了数据移动过程中的能量消耗
按照数据移动的能耗,将加速器的存储分成四个层级,off chip-DRAM, global buffer, i/o FIFO, RF,越常被重用的数据,存储的层级越低,访问的开销越小。
传统CNN加速器架构只针对权重或者累加和进行数据的重用。而eyeriss可以通过配置,实现不同存储层次上的权重和累加数据的重用,避免了反复写回片外存储带来的巨大开销
加速器上有两个时钟,一个是global buffer访问内存的时钟,一个是PE做计算的核心时钟。区分开来的好处是可以异步访问内存,方便预取
每个PE上都有一个状态机,当操作数就绪时,每个PE可以立即执行运算操作,而无需等待所有PE就绪。
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参考:
能效优先:eyeriss CNN加速器的设计思路
The text was updated successfully, but these errors were encountered: