sisd
- 网络单指令流单数据流;统计和信息系统局;单指令单数据;单指令单数据流;单指令流单数据流计算机
![sisd](../cache/732786.jpg)
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In an SISD architecture there is a single instruction cycle ; operands are fetched serially into a single processing unit before execution .
在单指令流单数据流结构中,有单一的指令周期,在执行前,单个处理机按序取操作数。
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Because of this similarity , some methods from high-speed pipeline SISD computers can be extended to array processors or vector computers , and vice-versa .
这一方法使得高速流水线的单指令流-单数据流计算机与阵列机、向量机的一些成果,通过相似性可以相互推广。
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Five code types ( SISD , SIMD , MIMD , VECTOR , and MASTER ) which should be specified explicitly by user in parallel programming were defined . The rules for describing the input and output parameters of each code segments were also discussed .
定义了5种用户在并行编程时需显式说明的代码段的类型(SISD,SIMD,MIMD,VEC-TOR,MASTER),以及用户对代码段的输入和输出参数需进行的说明。
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Such work is very difficult and some concept and terminology are ambiguous . From the point of view of program structure , the paper clearly presents the formal definitions about SISD , SIMD and MIMD , which are the foundations of extracting program heterogeneity .
这方面的工作难度大,概念和术语含糊不清,本文从程序结构观点出发,清楚地给出了SISD、SIMD、MIMD的形式定义,它是提取程序异构性的基础。