目前应用于网格的一些调度算法过于简单,不能满足对QoS的多样化需求,比如DBC(deadline and budget constrained)调度算法只支持两维的QoS需求,即截止期限(deadline)和预算(budget)。而对于真正的网格应用,用户与系统之间的交互应该加强...目前应用于网格的一些调度算法过于简单,不能满足对QoS的多样化需求,比如DBC(deadline and budget constrained)调度算法只支持两维的QoS需求,即截止期限(deadline)和预算(budget)。而对于真正的网格应用,用户与系统之间的交互应该加强,用户应能对提交的工作提出多种多样的QoS需求。在对传统DBC算法进行优化的基础上,提出了“多维QoS指导的DBC最优算法”,以确保搜索到所有满足用户需求的资源,不仅包括价格、时间最优,而且满足他们自己定义的专有QoS需求。为了测试这一最优算法,所做的模拟实验是以上海网格环境中各高性能结点的数据信息作为参数。展开更多
An essential step for the realization of free-form surface structures is to create an efficient structural gird that satisfies not only the architectural aesthetics,but also the structural performance.Employing the ma...An essential step for the realization of free-form surface structures is to create an efficient structural gird that satisfies not only the architectural aesthetics,but also the structural performance.Employing the main stress trajectories as the representation of force flows on a free-form surface,an automatic grid generation approach is proposed for the architectural design.The algorithm automatically plots the main stress trajectories on a 3D free-form surface,and adopts a modified advancing front meshing technique to generate the structural grid.Based on the proposed algorithm,an automatic grid generator named "St-Surmesh" is developed for the practical architectural design of free-form surface structure.The surface geometry of one of the Sun Valleys in Expo Axis for the Expo Shanghai 2010 is selected as a numerical example for validating the proposed approach.Comparative studies are performed to demonstrate how different structural grids affect the design of a free-form surface structure.展开更多
文摘目前应用于网格的一些调度算法过于简单,不能满足对QoS的多样化需求,比如DBC(deadline and budget constrained)调度算法只支持两维的QoS需求,即截止期限(deadline)和预算(budget)。而对于真正的网格应用,用户与系统之间的交互应该加强,用户应能对提交的工作提出多种多样的QoS需求。在对传统DBC算法进行优化的基础上,提出了“多维QoS指导的DBC最优算法”,以确保搜索到所有满足用户需求的资源,不仅包括价格、时间最优,而且满足他们自己定义的专有QoS需求。为了测试这一最优算法,所做的模拟实验是以上海网格环境中各高性能结点的数据信息作为参数。
基金Project(51378457)supported by the National Natural Science Foundation of China
文摘An essential step for the realization of free-form surface structures is to create an efficient structural gird that satisfies not only the architectural aesthetics,but also the structural performance.Employing the main stress trajectories as the representation of force flows on a free-form surface,an automatic grid generation approach is proposed for the architectural design.The algorithm automatically plots the main stress trajectories on a 3D free-form surface,and adopts a modified advancing front meshing technique to generate the structural grid.Based on the proposed algorithm,an automatic grid generator named "St-Surmesh" is developed for the practical architectural design of free-form surface structure.The surface geometry of one of the Sun Valleys in Expo Axis for the Expo Shanghai 2010 is selected as a numerical example for validating the proposed approach.Comparative studies are performed to demonstrate how different structural grids affect the design of a free-form surface structure.
