Multiple memory coherence groups in a single system and method therefor
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United States of America Patent
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Jun 22, 2004
Grant Date -
Sep 27, 2001
app pub date -
Jan 11, 2001
filing date -
Jan 13, 2000
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Abstract
A multi-processing system (10) comprises a plurality of groups, each having an arbitrary number of processing systems (11, 12). Memory coherency may or may not be established within any particular group. However, each group is intentionally arranged by functionality so that memory coherency, if implemented, only needs to be maintained within the group. Information transfers between two groups are therefore non-coherent by definition. Memory coherency implementation is significantly reduced in the system. A transaction format utilizes group and processing system identifiers to implement the simplified coherency scheme.
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