In a read miss, a cache might overwrite a line in the shared (S) state without notifying

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In a read miss, a cache might overwrite a line in the shared (S) state without notifying the directory that owns the corresponding memory block. Alternatively, it will notify the directory so that it deletes this cache from the list of sharers.
Show how the following transaction groups (performed one at a time in series) will proceed under both approaches.

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Computer Architecture A Quantitative Approach

ISBN: 9780128119051

6th Edition

Authors: John L. Hennessy, David A. Patterson

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