Verifying a time-of-day counter

Electrical computers and digital processing systems: multicomput – Multicomputer synchronizing

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713401, G06F 112

Patent

active

060030917

ABSTRACT:
A quiesced and synchronous distributed data processing system includes a primary node, a secondary node and a switch between the primary and secondary nodes. The TOD for the primary node is set depending on the system. The invention sets the TOD for the switch based on the TOD of the primary node. The primary node then verifies the switch TOD. If verified, the TOD for the secondary node is set, based on the TOD of the primary node. Finally, the secondary node self-verifies its TOD.

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B. Abali, C.B. Stunkel and C. Benveniste, "Clock Synchronization on a Multicomputer," Journal of Parallel and Distributed Computing, vol. 40, pp. 118-130 (1997).

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