Model testing: is it only a special case of software testing?

Effective testing of software is an important concern in the software engineering community. While many techniques regularly used for testing software apply equally well to testing the implementations of simulation models, we believe that testing simulations often raises issues that occur infrequently in other types of software. We believe that many code characteristics that commonly occur in simulation code are precisely those that the software testing community has identified as making testing challenging. We discuss many of the techniques that the software engineering community has developed to deal with those features and evaluate their applicability to simulation development.