Debuggers
Compile program with -g for all debuggers
dbx ? comes with the system so always latest version
cvd ? WorkShop pro debugger (SGI-style graphics)
(see http://techpubs.sgi.com/library ? Books ? Developer ? Developer Magic: Debugger User’s Guide)
totalview ? Beta version only (GUI oriented)
(see /opt/totalview/docs/User_Guide.pdf (or .ps) on hecate)
All of them can more or less debug multi-process programs