Guard

A Relative Debugger

Relative debugging is a technique that allows a user to compare data between two executing programs. It was devised to aid the testing and debugging of programs that are either modified in some way, or are ported to other computer platforms. It is effectively a hybrid test & debug methodology.

Guard supports the execution of both sequential and parallel programs on a range of platforms, and exists for a number of different development environments.  Guard can be applied to both sequential and parallel programs.