针对能耗热点的SPM静态分配管理策略

综合考虑程序的指令块、数据块、全局变量对程序执行能耗的影响,使用带权重扩展控制流图(WECFG)将应用程序划分成各类逻辑节点,通过SPM平均访问能耗值计算出逻辑节点平均能耗,以及各逻辑节点的能耗密度。以能耗热点为依据构造SPM分配的整数线性规划算法(ILP),转化成以能耗密度为优先权的0-1背包算法。仿真结果表明,使用该分配策略的SPM空间分配,比不使用SPM时的能耗量平均减少34.8%左右。

基于能耗热点的SPM静态分配策略

提出一种基于能耗热点的片上存储器静态分配策略。该分配策略依据带权重扩展控制流图将应用程序划分成不同的逻辑节点,并通过SPM平均访问能耗值计算出逻辑节点被放入SPM后产生的访问能耗的大小,以及各节点的能耗密度。构造SPM空间分配的整数线性规划算法(ILP),转化成以能耗密度为优先权的0-1背包算法来选择要放入SPM的节点。实验结果表明,使用该分配策略来管理SPM空间分配,比不使用SPM时的能耗量平均减少34%左右。

A Survey on a Heat Exchangers Network to Decrease Energy Consumption by Using Pinch Technology

There are several ways to increase the efficiency of energy consumption and to decrease energy consumption. In this paper. the application of pinch technology in analysis of the heat exchangers network （HEN） in order to reduce the energy consumption in a thermal system is studied. Therefore, in this grass root design, the optimum value of △Tmin, is obtained about 10℃and area efficiency （a） is 0.95. The author also depicted the grid diagram and driving force plot for additional analysis. In order to increase the amount of energy saving, heat transfer from above to below the pinch point in the diagnosis stage is verified for all options including re-sequencing, re-piping, add heat exchanger and splitting of the flows. Results show that this network has a low potential of retrofit to decrease the energy consumption, which pinch principles are planned to optimize energy consumption of the unit. Regarding the results of pinch analysis, it is suggested that in order to reduce the energy consumption, no alternative changes in the heat exchangers network of the unit is required. The acquired results show that the constancy of network is completely confirmed by the high area efficiency infirmity of the heat exchanger to pass the pinch point and from of deriving force plot.