JPH10232831A - キャッシュ・タグ維持装置 - Google Patents

キャッシュ・タグ維持装置

Info

Publication number
JPH10232831A
JPH10232831A JP10005361A JP536198A JPH10232831A JP H10232831 A JPH10232831 A JP H10232831A JP 10005361 A JP10005361 A JP 10005361A JP 536198 A JP536198 A JP 536198A JP H10232831 A JPH10232831 A JP H10232831A
Authority
JP
Japan
Prior art keywords
cache
tag
duplicate
processor
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP10005361A
Other languages
English (en)
Japanese (ja)
Other versions
JPH10232831A5 (enExample
Inventor
M Jacobs Edward
エドワード・エム・ジェイコブス
W Monkton Julie
ジュリー・ダブリュー・モンクトン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HP Inc
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of JPH10232831A publication Critical patent/JPH10232831A/ja
Publication of JPH10232831A5 publication Critical patent/JPH10232831A5/ja
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0806—Multiuser, multiprocessor or multiprocessing cache systems
    • G06F12/0815—Cache consistency protocols
    • G06F12/0831—Cache consistency protocols using a bus scheme, e.g. with bus monitoring or watching means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0806—Multiuser, multiprocessor or multiprocessing cache systems
    • G06F12/0815—Cache consistency protocols
    • G06F12/0817—Cache consistency protocols using directory methods
    • G06F12/0822—Copy directories
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/10—Providing a specific technical effect
    • G06F2212/1032—Reliability improvement, data loss prevention, degraded operation etc
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/10—Providing a specific technical effect
    • G06F2212/1041—Resource optimization

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
JP10005361A 1997-01-17 1998-01-14 キャッシュ・タグ維持装置 Withdrawn JPH10232831A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/783,918 US5907853A (en) 1997-01-17 1997-01-17 Method and apparatus for maintaining duplicate cache tags with selectable width
US783,918 1997-01-17

Publications (2)

Publication Number Publication Date
JPH10232831A true JPH10232831A (ja) 1998-09-02
JPH10232831A5 JPH10232831A5 (enExample) 2005-07-14

Family

ID=25130814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10005361A Withdrawn JPH10232831A (ja) 1997-01-17 1998-01-14 キャッシュ・タグ維持装置

Country Status (2)

Country Link
US (1) US5907853A (enExample)
JP (1) JPH10232831A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9704542D0 (en) * 1997-03-05 1997-04-23 Sgs Thomson Microelectronics A cache coherency mechanism
US6546464B2 (en) * 1999-01-08 2003-04-08 Nortel Networks Limited Method and apparatus for increasing data rates in a data network while maintaining system coherency
US8332592B2 (en) * 2004-10-08 2012-12-11 International Business Machines Corporation Graphics processor with snoop filter
US9128857B2 (en) 2013-01-04 2015-09-08 Apple Inc. Flush engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349871A (en) * 1980-01-28 1982-09-14 Digital Equipment Corporation Duplicate tag store for cached multiprocessor system
US5226146A (en) * 1988-10-28 1993-07-06 Hewlett-Packard Company Duplicate tag store purge queue
US5319766A (en) * 1992-04-24 1994-06-07 Digital Equipment Corporation Duplicate tag store for a processor having primary and backup cache memories in a multiprocessor computer system
US5537570A (en) * 1993-10-12 1996-07-16 Texas Instruments Incorporated Cache with a tag duplicate fault avoidance system and method
US5559987A (en) * 1994-06-30 1996-09-24 Digital Equipment Corporation Method and apparatus for updating a duplicate tag status in a snoop bus protocol based computer system

Also Published As

Publication number Publication date
US5907853A (en) 1999-05-25

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