对Condor检查点机制的改进

Improving Condor's checkpoint mechanism

介绍Condor的工作原理和Condor的检查点机制.对Condor的检查点机制进行了改进,实现了进程迁移时间的减少,减少了作业运行时间,同时还削弱了目标节点对源节点的依赖性.通过一个具体的作业调度程序成功地测试了Condor的检查点的正确性、检查点功能的可用性、检查点库提供的一些编程接口API的可用性和对Condor检查点机制改进的可行性.

This paper introduces the principle of the Condor and Condor＇s checkpoint mechanism. The improvement of Condor＇s checkpoint mechanism reduces the time of process migration and job running, while weakening end node＇s dependency on original node. The validity and usability of Condor＇s checkpoint, the usability of APIs from the checkpoint library and the feasibility of improvement of Condor＇s checkpoint mechanism were successfully tested through a concrete job scheduler.