We describe, and make publicly available, two problem instance
generators for a multiobjective version of the well-known quadratic
assignment problem (QAP). The generators allow a number of instance
parameters to be set, including those controlling epistasis and
inter-objective correlations. Based on these generators, several
initial test suites are provided and described. For each test instance
we measure some global properties and, for the smallest ones, make
some initial observations of the Pareto optimal sets/fronts. Our
purpose in providing these tools is to facilitate the ongoing study of
problem structure in multiobjective (combinatorial) optimization, and
its effects on search landscape and algorithm performance.