%0 Journal Article
%T Independent Tasks Scheduling on Tree-Based Grid Comouting Platforms<br>树型网格计算环境下的独立任务调度
%A LIN Wei-Wei
%A QI De-Yu
%A LI Yong-Jun
%A WANG Zhen-Yu
%A ZHANG Zhi-Li
%A <br>林伟伟
%A 齐德昱
%A 李拥军
%A 王振宇
%A 张志立
%J 软件学报
%D 2006
%I 
%X Task scheduling is a fundamental issue in achieving high performance in grid computing systems.However,it is a big challenge for efficient scheduling algorithm design and implementation.In this paper,the problem of scheduling independent tasks on tree-based grid computing platforms,where resources have different speeds of computation and communication,is discussed.In contrast to minimizing the total execution time,which is NP-hard in most formulations,an integer linear programming model for this problem is presented.Using the model,the optimal scheduling scheme that determines the optimal number of tasks assigned to each computing node is obtained.With the optimal scheduling scheme,two demand-driven and dynamic heuristic algorithms for task allocation are proposed:OPCHATA(optimization-based priority-computation heuristic algorithm for task allocation)and OPBHATA(optimization-based priority-bandwidth heuristic algorithm for task allocation).The experimental results show that the proposed algorithms for the scheduling problem obtain better performance than other algorithms.
%K task scheduling
%K grid computing
%K integer linear programming
%K optimal scheduling scheme
%K heuristic algorithm<br>任务调度
%K 网格计算
%K 整数线性规划
%K 最优任务分配方案
%K 启发式算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=7735F413D429542E610B3D6AC0D5EC59&aid=6F82B4FA8BDF8F29&yid=37904DC365DD7266&vid=BCA2697F357F2001&iid=708DD6B15D2464E8&sid=9FFFA3A269242559&eid=3DC983F807BF22A5&journal_id=1000-9825&journal_name=软件学报&referenced_num=16&reference_num=15