https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79165
--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> --- https://gcc.opensuse.org/c++bench-czerny/pb11/ has this link: http://www.polyhedron.com/fortran-compiler-comparisons/polyhedron-benchmark-suite which is a 404. An updated link seems to be: http://www.fortran.uk/fortran-compiler-comparisons-2015/the-polyhedron-solutions-benchmark-suite/ from which a zipfile containing aermod.f90 can be seen (am looking at it now).