【求助】关于PDNS

有个要求是：在Linux环境下,完成大规模仿真中拓扑生成、分割和显示；生成可以PDNS运行的TCL文件。
请指点下PDNS指什么。我在网上也没搜索出来啊。　　　　　　

PDNS - Parallel/Distributed NS

http://www.cc.gatech.edu/computing/compass/pdns/index.html　　　　　　

The publicly available network simulator ns has become a popular and widely used simulator for research in telecommunications networks. However, the design of ns is such that simulation of very large networks is difficult, if not impossible, due to excessive memory and CPU time requirements. The PADS research group at Georgia Tech has developed extensions and enhancements to the ns simulator to allow a network simulation to be run in a parallel and distributed fashion, on a network of workstations.