BUSTER £º A Portable Parallel Debugger Du Shu, Wang Dongsheng, Zheng Weimin Department of Computer Science, Tsinghua University, Beijing 100084, P.R.China In order to improve the popularity of the Workstation Cluster systems, the importance of portability of the parallel software can not be overestimated. Because parallel debugging greatly depends on the working environment, it is very difficult to transplant a parallel debugging tool from one cluster system to another. In this paper, an approach of hierarchy for parallel debugging design, which separating the parallel debugging control from the lower architecture, is presented. A general source code information table is also given out to solve the environment independence of source level debugging. By these means, a portable parallel debugging tool called BUSTER has been implemented. Keywords: Parallel Debugging, Source level debugging, Software Portability, Cluster of Workstations