How to use thermal model of GEM5

[shikun-wei]

I'm trying to use power and thermal model https://www.gem5.org/documentation/general_docs/thermal_model to study the power consumption of processor. I have modified the file se.py by adding the thermal model. The code is like:
thermal_node1 = ThermalNode()
thermal_node2 = ThermalNode()

Create thermal domain and add nodes

thermal_domain = ThermalDomain()
thermal_domain.nodes = [thermal_node1, thermal_node2]

Create thermal resistors and capacitors

thermal_resistor = ThermalResistor(node1=thermal_node1, node2=thermal_node2, resistance=0.5)
thermal_capacitor = ThermalCapacitor(node=thermal_node1, capacitance=100)

Create thermal model and add components

thermal_model = ThermalModel()
thermal_model.domains = [thermal_domain]
thermal_model.resistors = [thermal_resistor]
thermal_model.capacitors = [thermal_capacitor]

Attach the thermal model to the system

system.thermal_model = thermal_model
Then when I test it on helloworld application, I encounter a Segmentation fault and it seems that it doesn't exist a tutorial or an example script to show how to use the thermal model of GEM5. Does anyone have used it successfully and could tell me how to integrate it into simulation?