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公开(公告)号：EP1000404A1
公开(公告)日：2000-05-17
申请号：EP97941573.4
申请日：1997-09-16
发明人： BISSETT, Thomas, D. , FITZGERALD, Martin, J., V. , LEVEILLE, Paul, A. , MCCOLLUM, James, D. , MUENCH, Erik , TREMBLAY, Glenn, A.
IPC分类号： G06F19/00
CPC分类号： G06F11/07 , G06F11/0709 , G06F11/0745 , G06F11/079 , G06F11/1641 , G06F11/1645 , G06F11/165 , G06F11/1658 , G06F11/1683 , G06F11/1691 , G06F11/20 , G06F11/3065 , G06F11/327 , G06F2201/845
摘要： Data transfer to computing elements (14a, 14b) is synchronized in a computer system (10) that includes the computing elements and controllers (12) that provide data from data sources to the computing elements. A request for data from a computing element (14a, 14b) is intercepted and transmitted to the controllers (12). At least a first controller responds by transmitting requested data to the computing element and by indicating how a second controller will respond to the intercepted request.
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2.发明公开
公开(公告)号：EP1000397A1
公开(公告)日：2000-05-17
申请号：EP97941564.3
申请日：1997-09-16
IPC分类号： G06F13/00
CPC分类号： G06F11/2071
摘要： A mirror set copy from a first storage device (10) and controller (70) to a second storage device (20) and a controller (85) is performed in a computer system (100) in which write requests (50) are each associated with a reference label. A mirror read request (60) is received at the first storage device, while write requests are received and processed at the first device and received at both. The first storage device then sends the data and label to the second, after which the second storage device writes the data. The second device processes write requests until it finds a request with the same reference label as that sent with the data.
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公开(公告)号：EP1481324A1
公开(公告)日：2004-12-01
申请号：EP03744175.5
申请日：2003-03-06
IPC分类号： G06F11/00
CPC分类号： G06F11/2082 , G06F11/2074
摘要： Producing a mirror copy using incremental-divergence is performed in a computer system in which write requests (130) are each associated with a reference label. A mirror set may be restored to a state in which the data storage devices contain identical data by copying from the data storage device having “good” data only portions of data which have not been stored on the data storage device having divergent data. Incremental-divergence copying may be accomplished by keeping track of the changes made after a point in which the data storage devices are known to contain identical data.
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公开(公告)号：EP0986784B1
公开(公告)日：2001-10-04
申请号：EP98926238.1
申请日：1998-06-04
IPC分类号： G06F11/16
CPC分类号： G06F11/1691 , G06F9/3851 , G06F11/1683
摘要： Synchronized execution is maintained by compute elements processing instruction streams in a computer system including the compute elements and a controller. Each compute element includes a clock that operates asynchronously with respect to clocks of the other compute elements. Each compute element processes instructions from an instruction stream and counts the instructions processed. Upon processing a quantum of instructions from the instruction stream, the compute element initiates a synchronization procedure and continues to process instructions from the instruction stream and to count instructions processed from the instruction stream. The compute element halts processing of instructions from the instruction stream after processing an unspecified number of instructions from the instruction stream in addition to the quantum of instructions. Upon halting processing, the compute element sends a synchronization request to the controller and waits for a synchronization reply.
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公开(公告)号：EP0986784A1
公开(公告)日：2000-03-22
申请号：EP98926238.1
申请日：1998-06-04
IPC分类号： G06F11/16
CPC分类号： G06F11/1691 , G06F9/3851 , G06F11/1683
摘要： Synchronized execution is maintained by compute elements processing instruction streams in a computer system including the compute elements and a controller. Each compute element includes a clock that operates asynchronously with respect to clocks of the other compute elements. Each compute element processes instructions from an instruction stream and counts the instructions processed. Upon processing a quantum of instructions from the instruction stream, the compute element initiates a synchronization procedure and continues to process instructions from the instruction stream and to count instructions processed from the instruction stream. The compute element halts processing of instructions from the instruction stream after processing an unspecified number of instructions from the instruction stream in addition to the quantum of instructions. Upon halting processing, the compute element sends a synchronization request to the controller and waits for a synchronization reply.
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公开(公告)号：EP1000404B1
公开(公告)日：2010-05-19
申请号：EP97941573.4
申请日：1997-09-16
发明人： BISSETT, Thomas, D. , FITZGERALD, Martin, J., V. , LEVEILLE, Paul, A. , MCCOLLUM, James, D. , MUENCH, Erik , TREMBLAY, Glenn, A.
CPC分类号： G06F11/07 , G06F11/0709 , G06F11/0745 , G06F11/079 , G06F11/1641 , G06F11/1645 , G06F11/165 , G06F11/1658 , G06F11/1683 , G06F11/1691 , G06F11/20 , G06F11/3065 , G06F11/327 , G06F2201/845
摘要： Data transfer to computing elements (14a, 14b) is synchronized in a computer system (10) that includes the computing elements and controllers (12) that provide data from data sources to the computing elements. A request for data from a computing element (14a, 14b) is intercepted and transmitted to the controllers (12). At least a first controller responds by transmitting requested data to the computing element and by indicating how a second controller will respond to the intercepted request.
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公开(公告)号：EP1883865A2
公开(公告)日：2008-02-06
申请号：EP06770856.0
申请日：2006-05-23
发明人： LEVEILLE, Paul, A. , BISSETT, Thomas, D. , CORBIN, Stephen, S. , MELNICK, Jerry , TREMBLAY, Glenn, A. , WATANABE, Satoshi , KOYAMA, Keiichi
IPC分类号： G04F8/00
CPC分类号： G06F9/52 , G06F11/1405 , G06F11/1683 , G06F11/1691 , G06F11/2038 , G06F11/2097 , G06F12/1458 , G06F12/1483
摘要： A symmetric multiprocessing fault-tolerant computer system [100] controls memory access in a symmetric multiprocessing computer system. To do so, virtual page structures are created, where the virtual page structures reflect physical page access privileges to shared memory for processors in a symmetric multiprocessing computer system. Access to shared memory is controlled based on physical page access privileges reflected in the virtual paging structures to coordinate deterministic shared memory access between processors in the symmetric multiprocessing computer system. A symmetric multiprocessing fault-tolerant computer system may use duplication or continuous replay.
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公开(公告)号：EP1481324B1
公开(公告)日：2008-01-16
申请号：EP03744175.5
申请日：2003-03-06
IPC分类号： G06F11/20
CPC分类号： G06F11/2082 , G06F11/2074
摘要： Producing a mirror copy using incremental-divergence is performed in a computer system in which write requests (130) are each associated with a reference label. A mirror set may be restored to a state in which the data storage devices contain identical data by copying from the data storage device having "good" data only portions of data which have not been stored on the data storage device having divergent data. Incremental-divergence copying may be accomplished by keeping track of the changes made after a point in which the data storage devices are known to contain identical data.
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9.发明授权
公开(公告)号：EP1000397B1
公开(公告)日：2004-08-25
申请号：EP97941564.3
申请日：1997-09-16
CPC分类号： G06F11/2071
摘要： A mirror set copy from a first storage device (10) and controller (70) to a second storage device (20) and a controller (85) is performed in a computer system (100) in which write requests (50) are each associated with a reference label. A mirror read request (60) is received at the first storage device, while write requests are received and processed at the first device and received at both. The first storage device then sends the data and label to the second, after which the second storage device writes the data. The second device processes write requests until it finds a request with the same reference label as that sent with the data.
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公开(公告)号：EP0731945B1
公开(公告)日：2000-05-17
申请号：EP95902615.4
申请日：1994-11-15
发明人： BISSETT, Thomas, D. , FIORENTINO, Richard, D. , GLORIOSO, Robert, M. , MCCAULEY, Diane, T. , MCCOLLUM, James, D. , TREMBLAY, Glenn, A. , TROIANI, Mario
CPC分类号： G06F11/1658 , G06F1/14 , G06F11/1641 , G06F11/1645 , G06F11/1683 , G06F11/1687 , G06F11/1691 , G06F11/181 , G06F11/185 , G06F11/2005 , G06F11/2017
摘要： A method of synchronizing at least two computing elements (CE1, CE2) that each have clocks that operate asynchronously of the clocks of the other computing elements includes selecting one or more signals, designated as meta time signals, from a set of signals produced by the computing elements (CE1, CE2), monitoring the computing elements (CE1, CE2) to detect the production of a selected signal by one of the computing elements (CE1), waiting for the other computing elements (CE2) to produce a selected signal, transmitting equally valued time updates to each of the computing elements, and updating the clocks of the computing elements (CE1, CE2) based on the time updates. In a second aspect of the invention, fault resilient, or tolerant, computers (200) are produced by designating a first processor as a computing element (204), designating a second processor (202) as a controller, connecting the computing element (204) and the controller (202) to produce a modular pair, and connecting at least two modular pairs to produce a fault resilient or fault tolerant computer (200). Each computing element (202, 204) of the computer (200) performs all instructions in the same number of cycles as the other computing elements (202, 204). The computer systems include one or more controllers (202) and at least two computing elements (204).
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