{
    "tol": "0.5",
    "maxiter": "20",
    "preconditioner": {
        "type": "cpr",
        "finesmoother": {
            "type": "ILU0",
            "relaxation": "1.0"
        },
        "coarsesolver": {
            "tol": "0.5",
            "maxiter": "20",
            "preconditioner": {
                "type": "amg",
                "maxlevel": "5",
                "coarsenTarget": "1000",
                "smoother": "ILU0",
                "alpha": "0.2",
                "beta": "0.0001",
                "verbosity": "0",
                "iterations": "1",
                "relaxation": "1"
            },
            "verbosity": "0",
            "solver": "bicgstab"
        },
        "verbosity": "11",
        "weights_filename" : "weight_cpr.txt"
    },
    "verbosity": "10",
    "solver": "bicgstab"
}