APPARATUS AND METHOD FOR THE DISTRIBUTED DEVELOPMENT OF PROCESS PROGRAMS OF A DISTRIBUTED REAL-TIME SYSTEM ON A DISTRIBUTED DEVELOPMENT HARDWARE

摘要

The invention relates to an apparatus and to a method for the distributed development of process programs of a distributed real-time system, in particular a comprehensive distributed real-time system, on a distributed development hardware, wherein a given task is divided up into a multiplicity of processes capable of running in parallel, the dependencies of which are represented in the form of a marked process graph, and wherein there is a functional process specifications for each process, and wherein a maximum number of instructions N_WC is provided for each process. According to the invention, a maximum process durationd_WCE on the target hardware is calculated for each process from N_WC/L_ZH. L_ZH indicates the capability of the target hardware (in instructions/unit time), and the transmission time UD of the output data A (measured in bytes) from an upstream process to a downstream process of the target hardware is calculated from UD = A/L_C . L_C indicates the capability of the communication system (in bytes/unit time), and each process of the process graph is annotated with the process timed_WCE thereof. Each edge of the process graph is annotated with the transmission timeUD on the target hardware, and, starting from a starting time of a starting node, which for example is assigned the time t=0, each mark of the process graph is allocated the time which is given by addition of the process times and transmission times on the path from the starting node as far as said mark. In the case of a plurality of paths leading to the same mark, the respectively highest time is chosen, and the development of a process program is carried out on the basis of the functional process specification and the times determined from the process graph, of the start mark and end mark of the process of a development system, independently of the development of each other process program.