Commander4 has to be run with MPI, and a parameter file has to be indicated using the -p argument. Example usage:
mpirun -n 15 python -u src/python/commander4.py -p params/param_default.yml
(The -u makes stdout unbuffered, which I have found to be necessary in order to make MPI programs print properly to the terminal).
The code depends on C++ Ctypes libraries which are located in the src/cpp/ directory. There should be a file named src/cpp/compilation.sh which contains the compilation procedure for all C++ files.