Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2007-10-23
2007-10-23
Portka, Gary (Department: 2188)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711S118000, C711S119000, C711S124000, C711S129000, C711S148000
Reexamination Certificate
active
10960611
ABSTRACT:
A method of managing a distributed cache structure having separate cache banks, by detecting that a given cache line has been repeatedly accessed by two or more processors which share the cache, and replicating that cache line in at least two separate cache banks. The cache line is optimally replicated in a cache bank having the lowest latency with respect to the given accessing processor. A currently accessed line in a different cache bank can be exchanged with a cache line in the cache bank with the lowest latency, and another line in the cache bank with lowest latency is moved to the different cache bank prior to the currently accessed line being moved to the cache bank with the lowest latency. Further replication of the cache line can be disabled when two or more processors alternately write to the cache line.
REFERENCES:
patent: 5274789 (1993-12-01), Costa et al.
patent: 5303362 (1994-04-01), Butts et al.
patent: 5727150 (1998-03-01), Laudon et al.
patent: 6347362 (2002-02-01), Schoinas et al.
patent: 6453408 (2002-09-01), Stuart Fiske et al.
patent: 6766424 (2004-07-01), Wilson
patent: 6839739 (2005-01-01), Wilson
patent: 6871219 (2005-03-01), Noordergraaf et al.
patent: 6961821 (2005-11-01), Robinson
Rajamony Ramakrishnan
Shen Xiaowei
Sinharoy Balaram
International Business Machines - Corporation
Musgrove Jack V.
Portka Gary
Rabovianski Anton
Salys Casimer K.
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