precedence relation meaning in English
先行关系
优先关系
Examples
- ( 4 ) substitute the every precedence relation of precedence construction network with a procedure , and the lag of precedence relation is defined as duration of the procedure which is named as lag procedure . the lag procedure does not consume resource , and the duration is random or determined
将施工搭接网络的每一搭接关系改用新增的工序相连，并将该搭接关系的时距定义为这新增工序的持续时间，把这一新工序称为时距工序。 - After analyzing the characteristic of the parallel processing system , some problems about design missile - carrying processing system are pointed out ; network in the parallel processing system has become bottleneck and affect the performance of system , so the processing efficiency is analyzed in a multiprocessor system based on cluster - bus and some rules in designing the network in the multiprocessor system are brought out ; genetic algorithm is used for scheduling in the multiprocessor system , and a scheduling algorithm is described to suit arbitrary number of tasks , unequal task processing time , arbitrary precedence relation among tasks and arbitrary number of parallel processor , so that the schedule length will be minimized ; finally , an atr algorithm is mapped to a ring multiprocessor system , and a block diagram using dsp device is constructed . in chapter 4 , the study is performed on real - time system hardware realization of atr . tms320c80 is selected as the kernel processor in multiprocessor system
为此，对一种由常用的dsp芯片组成的多处理器系统的处理器利用率进行了分析，提出了多处理器系统互连网络设计的基本原则；本章使用遗传算法作为实现多处理器调度的工具，提出了一种新的任务调度算法，该算法主要是为了解决在任务数任意、任务计算时间不相等、任务前趋关系任意、以及任务间存在通信和考虑任务存贮器要求的情况下，如何优化任务在各个处理器上的分配和执行顺序，使得多处理器系统总的执行时间最小；最后对一个目标识别算法进行了硬件实现优化分析，根据分析结果，将算法映射到由dsp芯片组成的环形网络连接的处理器拓扑结构上，得到了多处理器系统的原理框图。