This daemon is quite robust and scalable in the expense of simplicity of implementation. The daemon is built around 2 thread pools - frontend and backend:

Frontend is a single-threaded 'owner' of the communication to and from the Front Panel controller. It accepts requests from the FP, and sends back the responses.

Backend is a multi-threaded pool performing the tasks dispatched by the frontend. Data acquired by the backend is handed over to frontend to be passed on to the FP controller.

Each thread is guarded by a watchdog, so that no task can spend in the processing more than a preset time. Watchdog timeout is considered a major failure, and leads to daemon restart.

Notice, that this design enables adding additional frontends, e.g. a web-based one, that would allow creation of web-based front panel useful for system administration.

This daemon implements a modified PID control loop, limiting the GPU temperature by timely limiting of GPU power. While the hard-coded PID factors were matched to meet AirTop case heat dissipation, the whole implementation is not AirTop-specific, and is able of serving any Nvidia GPU capable of power management.