Arrangement for monitoring a computer system having two processo

Details Arrangement for monitoring a computer system having two processo Arrangement for monitoring a computer system having two processo

1987-12-29

1989-11-14

Gruber, Felix D.

Excavating

36494392, 36443111, G06F 1130, G06F 1516, F02D 4122

Patent

active

048812277

ABSTRACT:
The invention is directed to an arrangement for monitoring a computer system with two processors in a motor vehicle. The arrangement provides that the two processors monitor each other to the same extent and that this monitoring occurs in the form of a hand-shake operation in the context of a cyclical data exchange between both processors. In this connection, it is especially advantageous that both processors: can operate fully independently of each other; need not utilize a directly coupled or common I/O-bus; and, are mutually asynchronously operable with different clock frequencies. The arrangement provides a mutual monitoring of two processors to the same extent so that a failure can be localized when it occurs. In this way, the arrangement can distinguish whether a processor has failed or whether an error is present in the peripheral hardware of the processors. For this purpose, the above-mentioned cyclical data exchange between both processors is utilized as an acknowledgement path for the monitoring function.

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IBM Technical Disclosure Bulletin: Synchronous Multiprocessing Fail Detection; vol. 7, No. 3, Aug. 1964, p. 218.

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