Disable autoparal and force execution with `mpi_procs` MPI processes
        and `omp_threads` OpenMP threads. Useful for generating benchmarks.

def with_fixed_mpi_omp(self, mpi_procs, omp_threads):
        """
        Disable autoparal and force execution with `mpi_procs` MPI processes
        and `omp_threads` OpenMP threads. Useful for generating benchmarks.
        """
        manager = self.manager if hasattr(self, "manager") else self.flow.manager
        self.manager = manager.new_with_fixed_mpi_omp(mpi_procs, omp_threads)