And some effective techniques are discussed to lower the clock period and cpi ( cycles per instruction ) of the pipeline . to eliminate the clock frequency limitation by some complex instructions " long executing time and achieve single - cycle throughput , a scalable super - pipelining extension technique together with a high performance / cost pipeline shift mechanism is presented in this paper 为避免流水时钟频率受制于某些复杂运算指令较长的运算时间，又要达到单周期完成一条运算指令的吞吐量指标，本文提出对ex级进行可伸缩超流水扩展的思想，提出并实现了一种高性加比的切换控制方案。
