中文摘要：

任务调度对于获取高性能具有十分重要的作用，各种任务调度算法都是基于不同的假设模型。从任务模型、网络平台模型和性能目标模型3个方面讨论了各种模型，结论为网格任务调度模型的主要发展方向是异构、非专用和多目标。

英文摘要：

Task scheduling plays a critical role for achieving high performance, which has been an active area of research for sevcral decades. In this paper, models for task scheduling in grid computing are surveyed. First with the application model, the divisible load model is rccommcnd; followcd by the platforms model, including processor model and network model, which is the main differcncc bctwcen traditionally platforms and the grid computing： next is the objective model. Several objectives are discussed and none of a single objective is satisfying, the paper proposes an integrated model to compete the problem. Finally some eonclusions are drawn.