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Computer system

A computer system and checkpoint technology, applied in the field of computer systems, can solve the problems of increasing the cost of computer systems, restricting software installation, etc.

Inactive Publication Date: 2003-02-12
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0031] Therefore, if the cost of the computer system is unavoidable, it will limit the installation of software

Method used

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Embodiment Construction

[0065] Embodiments of the present invention will be described below with reference to the drawings.

[0066] Figure 6 is a diagram schematically showing the configuration of the computer system according to the first embodiment of the present invention.

[0067] Reference numeral 10 designates a processor connected to the internal bus 11 . In addition, the internal bus 11 is also connected to a memory 12 and a BIB (Before Image Buffer) for storing data before updating the memory 12 .

[0068] The memory 12 stores software including an operating system (OS) to be executed by the processor.

[0069] Figure 19 A graphic illustrating the checkpoint / rerun functionality of a computer system. Such as Figure 19 As shown in , the contents of memory addresses 0, 1, 2, and 3 at time t0 are a, b, c, and d, respectively. No data is stored in the BIB. This state is referred to as "CKP".

[0070] Thereafter, at time t1, the processor issues a command to store X at address 1 in mem...

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PUM

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Abstract

The present invention provides a computer system with an interruption resistance which construction costs are greatly reduced by eliminating lock-run-out sequence when restarting is performed. In a computer system with an interruption resistance, comprising a check point restart function, special process for taking check points (21) are respectively provided for processors included in the computer system. When taking a check point, the special process for taking check points (21) is brought into an ready state by a wake-up portion (23). The special process is brought into a sleep state again after taking a check point.

Description

Technical field: [0001] The present invention relates to a computer system with checkpoint and restart capabilities, and more particularly to a computer system that does not need to perform a lock-run-out sequence on restart because a special process is provided to handle checkpoints. , and thus a computer system whose cost will also be reduced. [0002] The present invention also relates to a computer system consisting of a multiprocessor system with checkpoint and restart capabilities, wherein even if some processors of an incorporated application in the multiprocessor system fail, the remaining processors can keep running. Background technique: [0003] The following describes a general computer system in which processing continues when acquired checkpoints are in a normal state, and when a failure occurs, restarts from the last checkpoint before the failure to eliminate the failure. [0004] In such computer systems, during normal system operation, checkpoints are take...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14
CPCG06F11/1407G06F11/22
Inventor 平山秀昭清水邦保
Owner KK TOSHIBA
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