The software for the distributed on-board computer system prototype

According to the project No2323 "The Development of the Prototype of Distributed Fault Tolerant On-Board Computing System for Satellite Control System and the Complex of Scientific Equipment" of the International Scientific and Technical Center the work on development of a software and hardware parts of mentioned prototype is carrying out in the Keldysh Institute of Applied Mathematics of RAS and in the Space Research Institute of RAS jointly with the Fraunhofer Institute Rechnerarchitektur und Softwaretechnik (FIRST, Berlin, Germany). The preprint describes a project's software branch being in a progress. The brief survey of real-time executives is adduced and preliminary choice of the most appropriate system is done. Requirements to the software of the prototype of computing system are determined. Principles of the development of applied software for on board data processing by the prototype of on board computing system are discussed