软件DSM系统中的全局断点技术

Replay of Software Distributed Shared Memory System

软件DSM系统的并行调试环境已经成为制约其广泛应用的一个重要因素。全局断点技术是用户调试程序的一种基本方法。该文通过定义软件DSM程序执行的HB1序来描述程序的执行,并以此定义因果分布式断点。并使用重放方法和向量时间戳技术来获得因果分布式断点。应用测试结果表明,该方法产生很小的空间和时间开销。

The Parallel Debugging Environment is an important aspect which restricts the extensive application of Software DSM System.Global breakpoint is one fundamental technique of debugging distributed programs.The Happen-Before-1relation is defined to describe the software DSM program's execution,and according to it,Causal Distributed Breakpoint is defined.In this paper,Vector timestamp is adopted to describe the Causal Distributed Breakpoint ,and combined with replay technique of program execution,Causal Distributed Breakpoint is gotten in JIAJIA system.The experimental results show that the implementation produces little space and time overhead.