The Metis application provides an interface to the Metis graph partitioning library. This is used within Kratos Multiphysics to generate mesh partitions for MPI runs.
The applicaiton is organized in a series of processes, each one of them providing an interface to a different partitioning algorithm. The most commonly used one for finite elements is metis_divide_heterogeneous_input_process.h, which generates a partition of the mesh based on the nodal graph and can be used for meshes combining multiple element types.