Distributed processing system with checkpoint restart facilities wherein checkpoint data is updated only if all processors were able to collect new checkpoint data
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United States of America Patent
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Apr 5, 1994
Grant Date -
N/A
app pub date -
Apr 27, 1990
filing date -
Apr 28, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Data processors, each comprising a distributed processing system, include means for executing checkpoint restart processing synchronously with each other. Each of the data processors erases old checkpoint data when it can execute restart processing based on new checkpoint data. When one of the data processors cannot execute the restart processing based on the new checkpoint data, the other of the data processors executes the restart processing based on the old checkpoint data synchronously with the one of the data processors.
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