基于OGSA网格的分层式网格任务调度器设计

摘要

Based on the demand for grid task scheduling,task scheduling features of the grid,in the full analysis of the general process of grid task scheduling,etc.,based on a grid computing environment,while taking into account some characteristics,such as virtualization,hierarchical and the essential characteristics of autonomy,and collaborative workflow tasks demand grid tasks under resource-dependent,coarse-grained,repeat and other characteristics of the premise,to improve the design of a grid workflow task master-slave hierarchical scheduling model,and gives the scheduling policy and scheduling algorithm.The scheduler model grid in the actual task of collaborative workflow system has been good application results.%文章根据网格任务调度的需求、网格任务调度的特点,在充分分析一般网格任务调度的过程等的基础上,另外考虑到了网格计算环境的一些特点,比如虚拟化、分层次及自治的本质特征,以及在工作流任务协同需求下网格任务的资源依赖、粗粒度、重复执行等特性的前提下,改进设计了一种网格工作流任务主从式分层调度模型,并给出了调度策略和调度算法实现。该调度器模型在实际的网格工作流任务协同系统中得到了较好的应用效果。