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RUSSIAN FEDERAL NUCLEAR CENTER 
ALLRUSSIAN RESEARCH INSTITUTE OF EXPERIMENTAL PHYSICS 

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TOPOLOGICAL REDUNDANCY IN MULTIPROCESSOR ENVIRONMENTS
S.A. Stepanenko VANT. Ser.: Mat. Mod. Fiz. Proc 2002. Вып.4. С. 5560.
The paper proposed the redundancy method which specific features are: first, full identity of backup components and those being reserved and, second, full preservation of the environment topology which means that when replacing a defective component by a backup one only logical numbering of components and links between them changes. No physical changes and degradation, in particular, take place. The method proposed is described for hypercube , where n=2, k=2,3,..., is the hypercube dimension that coincides with Hamming code dimension. This code properties are used in the method presented. The method allows anyone failed component to be replaced. However, if components failed are such that their vectors have obtained by changing one and the same component of the corresponding separated vectors, then 2,3,..., components can be reserved "simultaneously" (by one and the same operation of logical numbering). Probabilities of simultaneously reserving several processor elements have been estimated. It is known that 1D, 2D, 3Dtori and othertype topologies can be constructed in hypercube using Gray codes. The method is usable to provide redundancy of such topologies with no changes required. The method can be used to provide redundancy of any structures (automata, collectives, organisms) having the topologies above.
 HARDWARE ARHITECTURE FOR INTERPROCESSOR COMMUNICATIONS SYSTEM OF MULTIPROCESSOR MPX SYSTEM
V.S. Popov, S.A. Stepanenko, A.A. Kholostov VANT. Ser.: Mat. Mod. Fiz. Proc 2002. Вып.4. С. 6164.
The paper studies some principles of construction and structure of multiprocessor communications system hardware for multiprocessor MPX system. The main processes of messaging are shown, the comparison of the system with similar items according to basic parameters is given.

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