A semiconductor device is formed by laminating two semiconductor chips with the rear surfaces thereof provided face to face. The system includes one or more detectors for detecting conditions under which ice, frost or snow are likely to occur on the light emitting face. The system also can include a systems management tool executing in memory of a host computer system and coupled to the cluster agent and maintaining an inventory of data pertaining to the computers in the cluster. The application plug-in further assigns a type of service classification to the received communication request based on the obtained application level information and provides the assigned type of service classification information for the communication request to a process executing on the server for processing communications from the server responsive to the communication request.