Invention Grant
US08751748B2 Reader set encoding for directory of shared cache memory in multiprocessor system
失效
多处理器系统中的共享缓存内存的读取器集编码
- Patent Title: Reader set encoding for directory of shared cache memory in multiprocessor system
- Patent Title (中): 多处理器系统中的共享缓存内存的读取器集编码
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Application No.: US13008583Application Date: 2011-01-18
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Publication No.: US08751748B2Publication Date: 2014-06-10
- Inventor: Daniel Ahn , Luis H. Ceze , Alan Gara , Martin Ohmacht , Zhuang Xiaotong
- Applicant: Daniel Ahn , Luis H. Ceze , Alan Gara , Martin Ohmacht , Zhuang Xiaotong
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Daniel P. Morris, Esq.
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28
Abstract:
In a parallel processing system with speculative execution, conflict checking occurs in a directory lookup of a cache memory that is shared by all processors. In each case, the same physical memory address will map to the same set of that cache, no matter which processor originated that access. The directory includes a dynamic reader set encoding, indicating what speculative threads have read a particular line. This reader set encoding is used in conflict checking. A bitset encoding is used to specify particular threads that have read the line.
Public/Granted literature
- US20110219191A1 READER SET ENCODING FOR DIRECTORY OF SHARED CACHE MEMORY IN MULTIPROCESSOR SYSTEM Public/Granted day:2011-09-08
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