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Title: Cache directory look-up re-use as conflict check mechanism for speculative memory requests

Abstract

In a cache memory, energy and other efficiencies can be realized by saving a result of a cache directory lookup for sequential accesses to a same memory address. Where the cache is a point of coherence for speculative execution in a multiprocessor system, with directory lookups serving as the point of conflict detection, such saving becomes particularly advantageous.

Inventors:
Issue Date:
Research Org.:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1093237
Patent Number(s):
8533399
Application Number:
12/984,252
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Classifications (CPCs):
G - PHYSICS G06 - COMPUTING G06F - ELECTRIC DIGITAL DATA PROCESSING
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02D - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
DOE Contract Number:  
B554331
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Jan 04
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Ohmacht, Martin. Cache directory look-up re-use as conflict check mechanism for speculative memory requests. United States: N. p., 2013. Web.
Ohmacht, Martin. Cache directory look-up re-use as conflict check mechanism for speculative memory requests. United States.
Ohmacht, Martin. Tue . "Cache directory look-up re-use as conflict check mechanism for speculative memory requests". United States. https://www.osti.gov/servlets/purl/1093237.
@article{osti_1093237,
title = {Cache directory look-up re-use as conflict check mechanism for speculative memory requests},
author = {Ohmacht, Martin},
abstractNote = {In a cache memory, energy and other efficiencies can be realized by saving a result of a cache directory lookup for sequential accesses to a same memory address. Where the cache is a point of coherence for speculative execution in a multiprocessor system, with directory lookups serving as the point of conflict detection, such saving becomes particularly advantageous.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {9}
}

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