Invention Grant
- Patent Title: Cache replacement with no additional memory space
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Application No.: US16854728Application Date: 2020-04-21
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Publication No.: US11294829B2Publication Date: 2022-04-05
- Inventor: Hiroshi Inoue
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Randall Bluestone
- Main IPC: G06F12/123
- IPC: G06F12/123

Abstract:
A method configures a cache to implement a LRU management technique. The cache has N entries divided into B buckets. Each bucket has a number of entries equal to P entries*M vectors, wherein N=B*P*M. Any P entry within any M vector is ordered using an in-vector LRU ordering process. Any entry within any bucket is ordered in LRU within the vectors and buckets. The LRU management technique moves a found entry to a first position within a same M vector, responsive to a lookup for a specified key, and permutes the found entry and a last entry in a previous M vector, responsive to the found entry already being in the first position within a vector and the same one of the M vectors not being a first vector in the bucket in the moving step.
Public/Granted literature
- US20210326272A1 CACHE REPLACEMENT WITH NO ADDITIONAL MEMORY SPACE Public/Granted day:2021-10-21
Information query
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