Multiprocessor system transferring abnormality detection signal

Details Multiprocessor system transferring abnormality detection signal Multiprocessor system transferring abnormality detection signal

1993-08-12

1996-11-05

Bowler, Alyssa H.

Excavating

39520015, 39518509, 39518319, 371 71, H01J 1300

Patent

active

055726798

ABSTRACT:
A multiprocessor system comprising a networking apparatus and a plurality of data processing apparatuses for transferring data through the networking apparatus from one to another of the plurality of data processing apparatuses. The networking apparatus contains: a switch unit for switching data transfer paths between data processing apparatuses; a priority control unit for determining and controlling the data transfer paths in response to requests from the data processing apparatuses; and an abnormality detecting unit for monitoring the operation of the priority control unit, generating and outputing to the data processing apparatus which has output the requests an abnormality informing signal. When the networking apparatus is comprised of a plurality of stages each containing at least one switch circuit for switching data transfer paths, an abnormality detection circuit and an abnormality detection signal transferring unit are provided for each switch circuit, for transferring the abnormality detection signal along the route for the data transfer passing through the switch circuit, in a direction opposite to the direction of the data transfer. Further, identification of the stage at which the abnormality detection signal has been generated, may be maintained until the abnormality detection signal reaches the data processing apparatus.

REFERENCES:
patent: 5345229 (1994-09-01), Olnowich et al.

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