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A distributed computer system node synchronization method

A technology of distributed computers and system nodes, applied in time division multiplexing systems, electrical components, multiplexing communications, etc., can solve the problems of poor versatility, synchronous hardware circuit interface design, complex synchronization algorithm implementation, and difficult system expansion. Upgrade and other issues to achieve the effect of simple implementation, reduced system complexity, and flexible configuration

Active Publication Date: 2018-01-12
XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional embedded fault-tolerant computer systems usually use special synchronization hardware circuit design, handshake synchronization algorithm, etc. to realize clock synchronization between system nodes to meet the requirements of system synchronization work; The design, synchronization algorithm, etc. are complicated to implement, and the versatility is poor, which makes the system difficult to expand and upgrade

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  • A distributed computer system node synchronization method
  • A distributed computer system node synchronization method
  • A distributed computer system node synchronization method

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Embodiment Construction

[0034] The present invention is a node synchronization method of a distributed computer system. Each computer node of the distributed fault-tolerant computer system is configured with multiple scheduling modes. The synchronization state of the system network where the nodes communicate, try to quickly and initially synchronize the "task cycle" of the computer node in the "startup scheduling" mode with the system network clock; after the initial synchronization is successful, switch the "startup scheduling" to the normal "work scheduling" "; in the "Work Scheduling" mode, the "synchronization task" in each task cycle will correct the length of the "synchronization task" according to the synchronization status of the system network, cycle clock and other information, and directly align with the system network cycle clock , in order to achieve the purpose of executing the "application task" synchronously on each node after the "synchronization task" runs, and establish a unified s...

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Abstract

The invention provides a node synchronization method for a distributed computer system, and the method comprises the following steps: 1), carrying out the initialization of node configuration; 1.1), adding the configuration of start dispatching to a module dispatching list of a computer node partition operating system, wherein the start dispatching is arranged to comprise synchronization partitioning which is used for carrying out the initial synchronization; 1.2), setting the length of the synchronization partitioning is T, and setting T as the integral approximate number of T' if a network period clock is T'; 1.3), carrying out the hooking of an expansion hook in the start dispatching when a main time frame starts to execute, and initializing start_time_tick = 0. The method provided by the invention can reliably carry out the synchronous alignment of system nodes, builds a unified total-system time reference at an application layer, achieves the synchronous and coordinative operation of the system, is suitable for the synchronous management of a new embedded-type distributed fault-tolerant computer system, achieves the synchronous operation of the system, and improves the task reliability of the system.

Description

technical field [0001] The invention belongs to the technical field of synchronous design of distributed computer systems, and relates to a method for ensuring clock synchronization between nodes in a distributed computer system. Background technique [0002] Traditional embedded fault-tolerant computer systems usually use special synchronization hardware circuit design, handshake synchronization algorithm, etc. to realize clock synchronization between system nodes to meet the requirements of system synchronization work; The design, synchronization algorithm, etc. are complicated to implement, and the versatility is poor, which makes the system difficult to expand and upgrade. Contents of the invention [0003] In order to solve the technical problems existing in the background technology, the present invention provides a method for ensuring clock synchronization between nodes of a distributed computer system, which can reliably synchronize and align system nodes, and esta...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0638
Inventor 刘帅徐奡李鹏郑久寿马小博程俊强
Owner XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA