针对当前网格环境中存在的应用开发困难和管理复杂等问题,提出了一种新的基于树型结构的网格环境TGrid,它支持高性能计算、面向主题的资源共享和新一代需求建模.文中在分析讨论TGrid的特点及实现关键问题的基础上,给出了树的建立、树的动态重构、资源查找等关键算法,重点描述了TGrid实现大规模并行处理的动态负载平衡算法.模拟实验结果表明所提出的算法是有效的. Aiming at the problems of application development and management complexity in current grid environment, this paper proposes a new tree-based grid environment TGrid, which supports high performance computing, theme-oriented resource sharing and next-generation requirement modeling Based on the analysis of the features of TGrid and the key problems, this paper presents the key algorithms of tree establishment, dynamic reconfiguration of tree, resource search and so on, and mainly introduces the dynamic load balancing algorithm of TGrid for massively parallel processing. Simulation results show that the proposed algorithm is effective.