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Check Pointing By Saving Source Data

IP.com Disclosure Number: IPCOM000067812D
Original Publication Date: 1979-Oct-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Dale, SP Hicks, GL Howe, LD Pezdirtz, KF [+details]

Abstract

An approach is provided which reduces machine cycle time by eliminating the check point access of data arrays required before each destination. A standard method for check pointing the data is to save the original value of each piece of data that is modified after a malfunction. Then the system can be restored to the exact state that existed at the beginning of a check point interval. However, this method requires sourcing each piece of data before it is modified.