FR2741974B1 - Procede et appareil pour corriger une erreur dans le champ de commande d'une memoire cache - Google Patents

Procede et appareil pour corriger une erreur dans le champ de commande d'une memoire cache

Info

Publication number
FR2741974B1
FR2741974B1 FR9608014A FR9608014A FR2741974B1 FR 2741974 B1 FR2741974 B1 FR 2741974B1 FR 9608014 A FR9608014 A FR 9608014A FR 9608014 A FR9608014 A FR 9608014A FR 2741974 B1 FR2741974 B1 FR 2741974B1
Authority
FR
France
Prior art keywords
control field
error
correcting
flags
bit
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.)
Expired - Fee Related
Application number
FR9608014A
Other languages
English (en)
Other versions
FR2741974A1 (fr
Inventor
Midori Muramatsu
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of FR2741974A1 publication Critical patent/FR2741974A1/fr
Application granted granted Critical
Publication of FR2741974B1 publication Critical patent/FR2741974B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • G06F11/1064—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices in cache or content addressable memories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
    • G06F11/0721—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment within a central processing unit [CPU]
    • G06F11/0724—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment within a central processing unit [CPU] in a multiprocessor or a multi-core unit
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0763—Error or fault detection not based on redundancy by bit configuration check, e.g. of formats or tags

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
FR9608014A 1995-06-28 1996-06-27 Procede et appareil pour corriger une erreur dans le champ de commande d'une memoire cache Expired - Fee Related FR2741974B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7162546A JP2842809B2 (ja) 1995-06-28 1995-06-28 キャッシュ索引の障害訂正装置

Publications (2)

Publication Number Publication Date
FR2741974A1 FR2741974A1 (fr) 1997-06-06
FR2741974B1 true FR2741974B1 (fr) 1998-08-28

Family

ID=15756655

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9608014A Expired - Fee Related FR2741974B1 (fr) 1995-06-28 1996-06-27 Procede et appareil pour corriger une erreur dans le champ de commande d'une memoire cache

Country Status (3)

Country Link
US (1) US5963718A (fr)
JP (1) JP2842809B2 (fr)
FR (1) FR2741974B1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6405322B1 (en) * 1999-04-13 2002-06-11 Hewlett-Packard Company System and method for recovery from address errors
US6708294B1 (en) 1999-09-08 2004-03-16 Fujitsu Limited Cache memory apparatus and computer readable recording medium on which a program for controlling a cache memory is recorded
US6546501B1 (en) * 1999-09-08 2003-04-08 Fujitsu Limited Cache memory apparatus and computer readable recording medium on which a program for controlling a cache memory is recorded
US7032123B2 (en) * 2001-10-19 2006-04-18 Sun Microsystems, Inc. Error recovery
TW200302966A (en) * 2002-01-29 2003-08-16 Matsushita Electric Ind Co Ltd Memory device, data processing method and data processing program
DE10327549A1 (de) * 2003-06-18 2005-01-13 Robert Bosch Gmbh Verfahren und Vorrichtung zur Fehlererkennung für einen Cachespeicher und entsprechender Cachespeicher
US7437597B1 (en) 2005-05-18 2008-10-14 Azul Systems, Inc. Write-back cache with different ECC codings for clean and dirty lines with refetching of uncorrectable clean lines
JP5021978B2 (ja) * 2006-08-11 2012-09-12 エヌイーシーコンピュータテクノ株式会社 マルチプロセッサシステム及びその動作方法
US8014215B2 (en) * 2009-12-10 2011-09-06 International Business Machines Corporation Cache array power savings through a design structure for valid bit detection
US8977907B2 (en) 2013-01-28 2015-03-10 Electro-Motive Diesel, Inc. Control system to identify faulty code modules

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092713A (en) * 1977-06-13 1978-05-30 Sperry Rand Corporation Post-write address word correction in cache memory system
DE3433679A1 (de) * 1984-09-13 1986-03-27 Siemens AG, 1000 Berlin und 8000 München Verfahren und anordnung zur sicherung von wichtigen informationen in speichereinheiten mit wahlweisem zugriff, insbesondere von steuerbits in als cache-speicher arbeitenden pufferspeichern einer datenverarbeitungsanlage
JPH0734185B2 (ja) * 1987-02-16 1995-04-12 日本電気株式会社 情報処理装置
US4942579A (en) * 1987-06-02 1990-07-17 Cab-Tek, Inc. High-speed, high-capacity, fault-tolerant error-correcting storage system
JPS6412348A (en) * 1987-07-06 1989-01-17 Hitachi Ltd Buffer control system
US4995041A (en) * 1989-02-03 1991-02-19 Digital Equipment Corporation Write back buffer with error correcting capabilities
US5335234A (en) * 1990-06-19 1994-08-02 Dell Usa, L.P. Error correction code pipeline for interleaved memory system
US5233616A (en) * 1990-10-01 1993-08-03 Digital Equipment Corporation Write-back cache with ECC protection
JPH04241050A (ja) * 1991-01-25 1992-08-28 Hitachi Ltd 計算機システムとその制御方法
US5649090A (en) * 1991-05-31 1997-07-15 Bull Hn Information Systems Inc. Fault tolerant multiprocessor computer system
US5629950A (en) * 1992-04-24 1997-05-13 Digital Equipment Corporation Fault management scheme for a cache memory
US5509119A (en) * 1994-09-23 1996-04-16 Hewlett-Packard Company Fast comparison method and apparatus for error corrected cache tags

Also Published As

Publication number Publication date
FR2741974A1 (fr) 1997-06-06
JPH0916473A (ja) 1997-01-17
JP2842809B2 (ja) 1999-01-06
US5963718A (en) 1999-10-05

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Effective date: 20080229