TW200945057A - Cache coherency protocol in a data processing system - Google Patents

Cache coherency protocol in a data processing system Download PDF

Info

Publication number
TW200945057A
TW200945057A TW098107920A TW98107920A TW200945057A TW 200945057 A TW200945057 A TW 200945057A TW 098107920 A TW098107920 A TW 098107920A TW 98107920 A TW98107920 A TW 98107920A TW 200945057 A TW200945057 A TW 200945057A
Authority
TW
Taiwan
Prior art keywords
cache
data
memory
state
write
Prior art date
Application number
TW098107920A
Other languages
English (en)
Chinese (zh)
Inventor
William C Moyer
Original Assignee
Freescale Semiconductor Inc
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 Freescale Semiconductor Inc filed Critical Freescale Semiconductor Inc
Publication of TW200945057A publication Critical patent/TW200945057A/zh

Links

Classifications

    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02Addressing or allocation; Relocation
    • G06F12/08Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0806Multiuser, multiprocessor or multiprocessing cache systems
    • G06F12/0815Cache consistency protocols
    • G06F12/0831Cache consistency protocols using a bus scheme, e.g. with bus monitoring or watching means

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)
TW098107920A 2008-04-30 2009-03-11 Cache coherency protocol in a data processing system TW200945057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/112,502 US8762652B2 (en) 2008-04-30 2008-04-30 Cache coherency protocol in a data processing system

Publications (1)

Publication Number Publication Date
TW200945057A true TW200945057A (en) 2009-11-01

Family

ID=41255347

Family Applications (1)

Application Number Title Priority Date Filing Date
TW098107920A TW200945057A (en) 2008-04-30 2009-03-11 Cache coherency protocol in a data processing system

Country Status (5)

Country Link
US (1) US8762652B2 (enExample)
JP (1) JP5583660B2 (enExample)
CN (1) CN102016790B (enExample)
TW (1) TW200945057A (enExample)
WO (1) WO2009134517A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9436972B2 (en) 2014-03-27 2016-09-06 Intel Corporation System coherency in a distributed graphics processor hierarchy

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8131941B2 (en) * 2007-09-21 2012-03-06 Mips Technologies, Inc. Support for multiple coherence domains
US20090089510A1 (en) * 2007-09-28 2009-04-02 Mips Technologies, Inc. Speculative read in a cache coherent microprocessor
US8392663B2 (en) * 2007-12-12 2013-03-05 Mips Technologies, Inc. Coherent instruction cache utilizing cache-op execution resources
US20090248988A1 (en) * 2008-03-28 2009-10-01 Mips Technologies, Inc. Mechanism for maintaining consistency of data written by io devices
US20120254541A1 (en) * 2011-04-04 2012-10-04 Advanced Micro Devices, Inc. Methods and apparatus for updating data in passive variable resistive memory
KR101700261B1 (ko) * 2012-10-22 2017-01-26 인텔 코포레이션 고성능 인터커넥트 코히어런스 프로토콜
US10509725B2 (en) 2013-03-08 2019-12-17 Oracle International Corporation Flushing by copying entries in a non-coherent cache to main memory
KR20150136045A (ko) * 2013-03-28 2015-12-04 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. 리플렉티브 메모리를 이용한 일관성 구현
CN103984645B (zh) * 2014-05-22 2018-03-02 浪潮电子信息产业股份有限公司 一种基于双控的缓存一致性数据刷写方法
US9720837B2 (en) * 2014-06-27 2017-08-01 International Business Machines Corporation Allowing non-cacheable loads within a transaction
GB2545897B (en) * 2015-12-21 2018-02-07 Advanced Risc Mach Ltd Asymmetric coherency protocol
WO2017142547A1 (en) * 2016-02-19 2017-08-24 Hewlett Packard Enterprise Development Lp Simulator based detection of a violation of a coherency protocol in an incoherent shared memory system
KR101842764B1 (ko) * 2016-03-18 2018-03-28 연세대학교 산학협력단 하드웨어 가속기와 호스트 시스템 사이의 데이터 일관성 유지 장치 및 방법
US9996471B2 (en) * 2016-06-28 2018-06-12 Arm Limited Cache with compressed data and tag
CN106371972B (zh) * 2016-08-31 2019-04-05 天津国芯科技有限公司 用于解决主设备间数据一致性的总线监控方法及装置
ES2895266T3 (es) * 2016-12-12 2022-02-18 Intel Corp Aparatos y métodos para una arquitectura de procesador
US10282296B2 (en) 2016-12-12 2019-05-07 Intel Corporation Zeroing a cache line
US10282297B2 (en) * 2017-02-08 2019-05-07 Arm Limited Read-with overridable-invalidate transaction
US10599567B2 (en) 2017-10-06 2020-03-24 International Business Machines Corporation Non-coherent read in a strongly consistent cache system for frequently read but rarely updated data
US10776281B2 (en) 2018-10-04 2020-09-15 International Business Machines Corporation Snoop invalidate filter for distributed memory management unit to reduce snoop invalidate latency
US10776266B2 (en) * 2018-11-07 2020-09-15 Arm Limited Apparatus and method of modification of stored data
US11188471B2 (en) 2020-04-03 2021-11-30 Alibaba Group Holding Limited Cache coherency for host-device systems
CN112463650A (zh) * 2020-11-27 2021-03-09 苏州浪潮智能科技有限公司 一种多核cpu下的l2p表的管理方法、设备以及介质

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04137052A (ja) * 1990-09-28 1992-05-12 Fujitsu Ltd キャッシュメモリ制御方式
US5301298A (en) * 1991-10-11 1994-04-05 Intel Corporation Processor for multiple cache coherent protocols
EP0559409B1 (en) 1992-03-04 1998-07-22 Motorola, Inc. A method and apparatus for performing a bus arbitration protocol in a data processing system
US5522057A (en) 1993-10-25 1996-05-28 Intel Corporation Hybrid write back/write through cache having a streamlined four state cache coherency protocol for uniprocessor computer systems
US5761725A (en) 1994-01-31 1998-06-02 Dell Usa, L.P. Cache-based computer system employing a peripheral bus interface unit with cache write-back suppression and processor-peripheral communication suppression for data coherency
WO1996035995A1 (en) 1995-05-10 1996-11-14 The 3Do Company Method and apparatus for managing snoop requests using snoop advisory cells
US5699548A (en) 1995-06-01 1997-12-16 Intel Corporation Method and apparatus for selecting a mode for updating external memory
US5920892A (en) 1996-08-26 1999-07-06 Unisys Corporation Method and system for inhibiting transfer of duplicate write addresses in multi-domain processor systems with cross-bus architecture to reduce cross-invalidation requests
US6374330B1 (en) 1997-04-14 2002-04-16 International Business Machines Corporation Cache-coherency protocol with upstream undefined state
US6292906B1 (en) 1997-12-17 2001-09-18 Intel Corporation Method and apparatus for detecting and compensating for certain snoop errors in a system with multiple agents having cache memories
US6601144B1 (en) 2000-10-26 2003-07-29 International Business Machines Corporation Dynamic cache management in a symmetric multiprocessor system via snoop operation sequence analysis
US6845432B2 (en) 2000-12-28 2005-01-18 Intel Corporation Low power cache architecture
US7234029B2 (en) 2000-12-28 2007-06-19 Intel Corporation Method and apparatus for reducing memory latency in a cache coherent multi-node architecture
US6801984B2 (en) 2001-06-29 2004-10-05 International Business Machines Corporation Imprecise snooping based invalidation mechanism
US20030195939A1 (en) 2002-04-16 2003-10-16 Edirisooriya Samatha J. Conditional read and invalidate for use in coherent multiprocessor systems
US6922756B2 (en) 2002-12-19 2005-07-26 Intel Corporation Forward state for use in cache coherency in a multiprocessor system
US7024521B2 (en) * 2003-04-24 2006-04-04 Newisys, Inc Managing sparse directory evictions in multiprocessor systems via memory locking
GB2403561A (en) * 2003-07-02 2005-01-05 Advanced Risc Mach Ltd Power control within a coherent multi-processor system
US7284097B2 (en) 2003-09-30 2007-10-16 International Business Machines Corporation Modified-invalid cache state to reduce cache-to-cache data transfer operations for speculatively-issued full cache line writes
US7421535B2 (en) 2004-05-10 2008-09-02 International Business Machines Corporation Method for demoting tracks from cache
US7373462B2 (en) 2005-03-29 2008-05-13 International Business Machines Corporation Snoop filter for filtering snoop requests
GB2442984B (en) * 2006-10-17 2011-04-06 Advanced Risc Mach Ltd Handling of write access requests to shared memory in a data processing apparatus
US20080183972A1 (en) 2007-01-26 2008-07-31 James Norris Dieffenderfer Snoop Filtering Using a Snoop Request Cache

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9436972B2 (en) 2014-03-27 2016-09-06 Intel Corporation System coherency in a distributed graphics processor hierarchy
TWI556193B (zh) * 2014-03-27 2016-11-01 英特爾公司 在分散式圖形處理器階層中的系統同調性之技術

Also Published As

Publication number Publication date
JP2011519461A (ja) 2011-07-07
JP5583660B2 (ja) 2014-09-03
WO2009134517A1 (en) 2009-11-05
CN102016790A (zh) 2011-04-13
CN102016790B (zh) 2014-08-06
US8762652B2 (en) 2014-06-24
US20090276578A1 (en) 2009-11-05

Similar Documents

Publication Publication Date Title
TW200945057A (en) Cache coherency protocol in a data processing system
US7680987B1 (en) Sub-page-granular cache coherency using shared virtual memory mechanism
US6721848B2 (en) Method and mechanism to use a cache to translate from a virtual bus to a physical bus
KR101593107B1 (ko) 메모리 요청들을 처리하기 위한 시스템들 및 방법들
US8423721B2 (en) Cache coherency protocol in a data processing system
US9563575B2 (en) Least recently used mechanism for cache line eviction from a cache memory
US20180095906A1 (en) Hardware-based shared data coherency
TW200815992A (en) An exclusive ownership snoop filter
TW200421089A (en) Method and apparatus for injecting write data into a cache
JP2000250884A (ja) 不均等メモリ・アクセス・コンピュータ・システムにおいてエヴィクション・プロトコルを提供するための方法およびシステム
US10102124B2 (en) High bandwidth full-block write commands
US6996693B2 (en) High speed memory cloning facility via a source/destination switching mechanism
US6892283B2 (en) High speed memory cloner with extended cache coherency protocols and responses
US7069394B2 (en) Dynamic data routing mechanism for a high speed memory cloner
WO2013100988A1 (en) Retrieval of previously accessed data in a multi-core processor
JP2006323845A (ja) メモリ・ブロックを初期設定するためのプロセッサ、データ処理システム、および方法
US7464227B2 (en) Method and apparatus for supporting opportunistic sharing in coherent multiprocessors
US6898677B2 (en) Dynamic software accessibility to a microprocessor system with a high speed memory cloner
KR101944329B1 (ko) 멀티프로세서 시스템 및 그것의 캐쉬 관리 방법
US7502917B2 (en) High speed memory cloning facility via a lockless multiprocessor mechanism
US6986013B2 (en) Imprecise cache line protection mechanism during a memory clone operation
US6915390B2 (en) High speed memory cloning facility via a coherently done mechanism
US8099560B2 (en) Synchronization mechanism for use with a snoop queue
US20040111577A1 (en) High speed memory cloner within a data processing system
US6928524B2 (en) Data processing system with naked cache line write operations