redundancy check

Definitions

  • WordNet 3.6
    • n redundancy check a system of checking for errors in computer functioning
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Usage

In literature:

Among the ancients, the redundance of population was sometimes checked by exposing infants.
"Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson" by Thomas Jefferson
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In news:

Marriott International, Inc is eliminating redundant questions and as many keystrokes as possible when guests check in at any of its extended stay and select service brands.
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In science:

This is because that these schemes protect each checked core with a redundant core individually.
RepTFD: Replay Based Transient Fault Detection
Hence, they allow the checked core and the corresponding redundant core to load value from the same source (say, LLC or memory).
RepTFD: Replay Based Transient Fault Detection
If the source itself, contains incorrect values due to some transient fault in the uncore parts (e.g., the transfer from some core’s L1 cache to LLC), both the checked core and the redundant core will produce the same incorrect instruction results.
RepTFD: Replay Based Transient Fault Detection
Essentially different with the previous core-level schemes, RepTFD treats all checked cores as an entire group, and uses a redundant group of cores, which has the same number of cores with the checked group, to protect the checked group as a whole.
RepTFD: Replay Based Transient Fault Detection
Since there is no value dependency between groups (i.e., a checked core and a redundant core will not load a same memory location), any transient fault can affect at most one group of cores, thus can be easily detected.
RepTFD: Replay Based Transient Fault Detection
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