PCS - Part 2: Multiprocessor Architectures
PCS - Part 2: Multiprocessor Architectures
PCS - Part 2: Multiprocessor Architectures
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Cache Coherency: MESI (2)<br />
M Exclusive Modified The line is exclusively in this cache<br />
and got modified (written)<br />
The line is exclusively in this cache<br />
E Exclusive Unmodified but was not modified, i.e. was<br />
only accessed by read operations<br />
S Shared Unmodified This line is also present in another<br />
processors cache, but was not modified<br />
Line was modified by another<br />
I Invalid processor,<br />
cache entry may not be used<br />
Peter Sobe<br />
<strong>PCS</strong> - <strong>Part</strong> 2: <strong>Multiprocessor</strong> <strong>Architectures</strong>
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