A fault-tolerant distributed real-time computer system for controlling a physical system, in particular a machine or a motor vehicle, wherein the components of the computer system have access to a global time of known precision, and wherein the node computers and intelligent sensors and the intelligent actuators exchange time-triggered messages and event-triggered messages periodically via the distributor units, and wherein the functions of the user software are contained in real-time software components—RTSC—and the periodic time-triggered data transfer between the RTSC is specified by a time-triggered data flow diagram, and wherein the assignment of the RTSC to a TTVM of a node computer and specific parameters of the TTVM are contained in active local allocation plans for each RTSC, and wherein the time plans for the time-triggered communication in this distributor unit are contained in active local allocation plans for each distributor unit, and wherein a global allocation plan consists of the totality
