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Title: Cache as point of coherence in multiprocessor system

Abstract

In a multiprocessor system, a conflict checking mechanism is implemented in the L2 cache memory. Different versions of speculative writes are maintained in different ways of the cache. A record of speculative writes is maintained in the cache directory. Conflict checking occurs as part of directory lookup. Speculative versions that do not conflict are aggregated into an aggregated version in a different way of the cache. Speculative memory access requests do not go to main memory.

Inventors:
; ; ; ; ; ; ;
Issue Date:
Research Org.:
GLOBALFOUNDRIES INC., Grand Cayman, KY (Cayman Islands)
Sponsoring Org.:
USDOE
OSTI Identifier:
1333728
Patent Number(s):
9,507,647
Application Number:
13/008,531
Assignee:
GLOBALFOUNDRIES INC. (Grand Cayman, KY) OSTI
DOE Contract Number:  
B554331
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Jan 18
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Blumrich, Matthias A., Ceze, Luis H., Chen, Dong, Gara, Alan, Heidelberger, Phlip, Ohmacht, Martin, Steinmacher-Burow, Burkhard, and Zhuang, Xiaotong. Cache as point of coherence in multiprocessor system. United States: N. p., 2016. Web.
Blumrich, Matthias A., Ceze, Luis H., Chen, Dong, Gara, Alan, Heidelberger, Phlip, Ohmacht, Martin, Steinmacher-Burow, Burkhard, & Zhuang, Xiaotong. Cache as point of coherence in multiprocessor system. United States.
Blumrich, Matthias A., Ceze, Luis H., Chen, Dong, Gara, Alan, Heidelberger, Phlip, Ohmacht, Martin, Steinmacher-Burow, Burkhard, and Zhuang, Xiaotong. Tue . "Cache as point of coherence in multiprocessor system". United States. https://www.osti.gov/servlets/purl/1333728.
@article{osti_1333728,
title = {Cache as point of coherence in multiprocessor system},
author = {Blumrich, Matthias A. and Ceze, Luis H. and Chen, Dong and Gara, Alan and Heidelberger, Phlip and Ohmacht, Martin and Steinmacher-Burow, Burkhard and Zhuang, Xiaotong},
abstractNote = {In a multiprocessor system, a conflict checking mechanism is implemented in the L2 cache memory. Different versions of speculative writes are maintained in different ways of the cache. A record of speculative writes is maintained in the cache directory. Conflict checking occurs as part of directory lookup. Speculative versions that do not conflict are aggregated into an aggregated version in a different way of the cache. Speculative memory access requests do not go to main memory.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {11}
}

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