Ein 'Stabiler' Speicher fuer ein speichergekoppeltes Multiprozessorsystem

Fault tolerant methods are very important for multiprocessor systems because the probability of occurrence of a fault is much higher than in a single processor system. Therefore, in case of long calculations, backward recovery is frequently applied. The reliable storing of temporary results (recovery points) is of high importance. Each recovery point has to be stored unchanged for a possibly long time. For this purpose a 'stable storage' has to be used. A stable storage was designed and implemented for the multiprocessor system MEMSY that was built within the scope of the special research project called 'multiprocessor and network configuration' at the Friedrich-Alexander-University of Erlangen-Nuernberg. MEMSY is characterized by its memory coupling and its topology with alternative paths to the decentralized common communication memories. The stable storage was developed as an extension to the communication memory so that even in the case of a loss of a single MEMSY node or of a single transfer path, an access to this storage is still possible. The memories were realized with RAM memories in order to keep the periodical access for safeguarding low. (orig.)SIGLEAvailable from TIB Hannover: RA 2105(28,5) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman