Real-life example of the reasonable expectation of memory is if you told your friend to write something on some paper, and they come back and say 'okay, I've done it,' then you'd expect to see that writing when you go back to look at the piece of paper.
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fangyihua
Question about the term last value? What is the last value written to address X? The last write issued by any processor before the load(read) instruction is issued? Is the memory system serialized when multiple read and write comes from multiple processor?
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kayvonf
@fangyihua: Exactly! Coherence provides a proper definition of last value. See the later discussion of write serialization.
Real-life example of the reasonable expectation of memory is if you told your friend to write something on some paper, and they come back and say 'okay, I've done it,' then you'd expect to see that writing when you go back to look at the piece of paper.
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Question about the term last value? What is the last value written to address
X? The last write issued by any processor before the load(read) instruction is issued? Is the memory system serialized when multiple read and write comes from multiple processor?This comment was marked helpful 0 times.
@fangyihua: Exactly! Coherence provides a proper definition of last value. See the later discussion of write serialization.
This comment was marked helpful 0 times.