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近二十年来,尽管通用计算机的处理速度平均每五年提高一个数量级,但是对于一个串行体系结构的计算机而言,其速度最终将受到信号传输和器件延时的限制。因此,为了从本质上提高计算机的处理速度,必须采用多机并行处理技术,这是计算机体系结构的发展趋势,它突破串行执行的冯诺依曼体系结构,从而使计算速度得到极大地提高。随着微处理器和半导体存贮器性能的提高和成本的下降,80年代初开始发
For nearly two decades, general purpose computers have averaged an order of magnitude every five years, but for a serial architecture computer, the speed will eventually be limited by signal transmission and device latency. Therefore, in order to essentially improve the processing speed of the computer, multi-machine parallel processing technology must be adopted. This is a trend of computer architecture that breaks through the von Neumann architecture of serial execution, so that the calculation speed is greatly improved . As microprocessors and semiconductor memories improve in performance and cost, the beginning of the 1980s