The simulation-based decision support system (SBDSS) is designed to achieve a highlevel of performance, flexibility and adaptability, in response to meet the special needs of productionand logistics management during ...The simulation-based decision support system (SBDSS) is designed to achieve a highlevel of performance, flexibility and adaptability, in response to meet the special needs of productionand logistics management during the economic system reform era in China. It consists two subsys-tems: the object library modeler (OLM) and the simulation engine and its manager (SEM). UsingSBDSS the decision makers can work out their optimal production choice under certain circumstancesthrough scenario simulations. And they can test a set of virtual organizations reflecting systems re-form before a real reorganization has been taken, as well as perform a virtual manufacturing processfor a new product design (Copyright @ 1998 IFAC).展开更多
The CORBA technique is an integration of the object-oriented conception and distributed computing technique. It can make the application within distributed heterogeneous environments reusable, portable and interoperab...The CORBA technique is an integration of the object-oriented conception and distributed computing technique. It can make the application within distributed heterogeneous environments reusable, portable and interoperable. The architecture of CORBA-based discrete event simulation systems is presented and the interface of distributed simulation objects (DSO) is defined in this paper after the DSO is identified and the synchronization mechanism among DSO is discussed.展开更多
磁约束核聚变粒子网格法(particle in cell,PIC)回旋动理学模拟代码VirtEx具备研究聚变产物Alpha粒子约束及输运的能力,是聚变能实现的关键.Alpha粒子回旋动理学模拟相比电子模拟,访存量更大、更复杂,同时包含非规则访问和原子写操作,...磁约束核聚变粒子网格法(particle in cell,PIC)回旋动理学模拟代码VirtEx具备研究聚变产物Alpha粒子约束及输运的能力,是聚变能实现的关键.Alpha粒子回旋动理学模拟相比电子模拟,访存量更大、更复杂,同时包含非规则访问和原子写操作,对访存性能依赖较高,在面向高计算密度特征的天河新一代超算平台异构处理器MT-3000进行移植及性能优化时具有巨大挑战.考虑到异构加速器架构和PIC算法特性,设计并实施了一些优化方法,如中间变量的即时计算、定制化的软件缓存设计、缓存空间局部性优化、热点函数合并,显著地提高了热点函数的计算访存比.通过中等规模的回旋动理学离子基准算例测试显示了在热点函数Push,Locate,Charge上分别有10.9,13.3,16.2倍的速度提升,同时在扩展性测试中的3840个节点的5898240个加速核上显示了良好的扩展性,并行效率为88.4%.展开更多
文摘The simulation-based decision support system (SBDSS) is designed to achieve a highlevel of performance, flexibility and adaptability, in response to meet the special needs of productionand logistics management during the economic system reform era in China. It consists two subsys-tems: the object library modeler (OLM) and the simulation engine and its manager (SEM). UsingSBDSS the decision makers can work out their optimal production choice under certain circumstancesthrough scenario simulations. And they can test a set of virtual organizations reflecting systems re-form before a real reorganization has been taken, as well as perform a virtual manufacturing processfor a new product design (Copyright @ 1998 IFAC).
基金This project was supported by "Ninth Five" National Defense Sustentation Foundation.
文摘The CORBA technique is an integration of the object-oriented conception and distributed computing technique. It can make the application within distributed heterogeneous environments reusable, portable and interoperable. The architecture of CORBA-based discrete event simulation systems is presented and the interface of distributed simulation objects (DSO) is defined in this paper after the DSO is identified and the synchronization mechanism among DSO is discussed.
文摘磁约束核聚变粒子网格法(particle in cell,PIC)回旋动理学模拟代码VirtEx具备研究聚变产物Alpha粒子约束及输运的能力,是聚变能实现的关键.Alpha粒子回旋动理学模拟相比电子模拟,访存量更大、更复杂,同时包含非规则访问和原子写操作,对访存性能依赖较高,在面向高计算密度特征的天河新一代超算平台异构处理器MT-3000进行移植及性能优化时具有巨大挑战.考虑到异构加速器架构和PIC算法特性,设计并实施了一些优化方法,如中间变量的即时计算、定制化的软件缓存设计、缓存空间局部性优化、热点函数合并,显著地提高了热点函数的计算访存比.通过中等规模的回旋动理学离子基准算例测试显示了在热点函数Push,Locate,Charge上分别有10.9,13.3,16.2倍的速度提升,同时在扩展性测试中的3840个节点的5898240个加速核上显示了良好的扩展性,并行效率为88.4%.
