Invention Grant
US08195892B2 Structure for silent invalid state transition handling in an SMP environment
有权
在SMP环境中静默无效状态转换处理的结构
- Patent Title: Structure for silent invalid state transition handling in an SMP environment
- Patent Title (中): 在SMP环境中静默无效状态转换处理的结构
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Application No.: US12105970Application Date: 2008-04-18
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Publication No.: US08195892B2Publication Date: 2012-06-05
- Inventor: Marcus L. Kornegay , Ngan N. Pham , Brian T. Vanderpool
- Applicant: Marcus L. Kornegay , Ngan N. Pham , Brian T. Vanderpool
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Patterson & Sheridan LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28

Abstract:
A design structure embodied in a machine readable storage medium for designing, manufacturing, and/or testing a design can be provided. The design structure includes a symmetric multiprocessing (SMP) system. The system includes a plurality of nodes. Each of the nodes includes a node controller and a plurality of processors cross-coupled to one another. The system also includes at least one cache directory coupled to each node controller, and, invalid state transition logic coupled to each node controller. The invalid state transition logic includes program code enabled to identify an invalid state transition for a cache line in a local node, to evict a corresponding cache directory entry for the cache line, and to forward an invalid state transition notification to a node controller for a home node for the cache line in order for the home node to evict a corresponding cache directory entry for the cache line.
Public/Granted literature
- US20080215818A1 STRUCTURE FOR SILENT INVALID STATE TRANSITION HANDLING IN AN SMP ENVIRONMENT Public/Granted day:2008-09-04
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