{
    "config_version": 2, 
    "solver": {
        "preconditioner": {
            "error_scaling": 0, 
            "print_grid_stats": 1, 
            "max_uncolored_percentage": 0.05, 
            "algorithm": "AGGREGATION", 
            "solver": "AMG", 
            "smoother": "MULTICOLOR_DILU", 
            "presweeps": 0, 
            "selector": "SIZE_2", 
            "coarse_solver": "DENSE_LU_SOLVER", 
            "max_iters": 1, 
            "postsweeps": 3, 
            "min_coarse_rows": 32, 
            "relaxation_factor": 0.75, 
            "scope": "amg", 
            "max_levels": 100, 
            "matrix_coloring_scheme": "PARALLEL_GREEDY", 
            "cycle": "V"
        }, 
        "use_scalar_norm": 1, 
        "solver": "FGMRES", 
        "print_solve_stats": 1, 
        "obtain_timings": 1, 
        "max_iters": 100, 
        "monitor_residual": 1, 
        "gmres_n_restart": 10, 
        "convergence": "RELATIVE_INI_CORE", 
        "scope": "main", 
        "tolerance": 1e-10, 
        "norm": "L2"
    }
}
