Abstract: A fail-safe system for a cluster application is disclosed. The system includes a first subsystem comprising a graphic processing unit (GPU) that executes a high-level operating system renders a first set of parameter data, and a second subsystem that executes a real-time operating system and renders a second set of parameter data. The system also includes a controller area network connected to a parameter data source input and to the first subsystem and the second subsystem. The system further includes a quality of service (QoS) switch executing a QoS monitor module that decides to display the first set of parameter data being rendered by the first subsystem or the second set of parameter data being rendered by the second subsystem depending on an availability and load of the first subsystem as determined by a lag and a stability threshold. The system further includes a display connected to the QoS switch.