Invention Grant
- Patent Title: Cache architecture with distributed state bits
- Patent Title (中): 具有分布状态位的缓存结构
-
Application No.: US12429586Application Date: 2009-04-24
-
Publication No.: US08171220B2Publication Date: 2012-05-01
- Inventor: Ganesh Balakrishnan , Anil Krishna
- Applicant: Ganesh Balakrishnan , Anil Krishna
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Yuanmin Cai; Khanh Tran
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
Embodiments that that distribute replacement policy bits and operate the bits in cache memories, such as non-uniform cache access (NUCA) caches, are contemplated. An embodiment may comprise a computing device, such as a computer having multiple processors or multiple cores, which has cache memory elements coupled with the multiple processors or cores. The cache memory device may track usage of cache lines by using a number of bits. For example, a controller of the cache memory may manipulate bits as part of a pseudo least recently used (LRU) system. Some of the bits may be in a centralized area of the cache. Other bits of the pseudo LRU system may be distributed across the cache. Distributing the bits across the cache may enable the system to conserve additional power by turning off the distributed bits.
Public/Granted literature
- US20100275044A1 CACHE ARCHITECTURE WITH DISTRIBUTED STATE BITS Public/Granted day:2010-10-28
Information query