{
  "default": "go_cpu",
  "volumes": {
    "main": {
      "sectors": {
        "0,0,0,0": {
          "layers": {
            "4": {"backend": "native_cpu"},
            "5": {"backend": "native_cpu"},
            "6": {"backend": "native_cpu"},
            "7": {"backend": "native_cpu"},
            "8": {"backend": "native_cpu"},
            "9": {"backend": "metal"},
            "10": {"backend": "metal"},
            "11": {"backend": "metal"},
            "12": {"backend": "metal"}
          }
        }
      }
    }
  }
}