Node synchronization method of distributed virtual test system

A virtual test and node synchronization technology, applied in the field of virtual test system, can solve the problems of system delay danger, complex mechanism, lower system efficiency and real-time performance, and achieve low system resource occupancy, save system resources, and simple implementation

Active Publication Date: 2012-09-12
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

But this strict synchronization achieved by mutual control and constraints among members also brings the danger of delaying the entire system due to the delay of a certain node.
On the other hand, due to the complex mechanism of HLA itself, there are more redundancy for the virtual test system, which will reduce the efficiency and real-time performance of the system to a certain extent

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  • Node synchronization method of distributed virtual test system
  • Node synchronization method of distributed virtual test system
  • Node synchronization method of distributed virtual test system

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] like figure 1 As shown, the node synchronization method in the distributed virtual test system of the present invention comprises the following steps:

[0036] 1. Configure the node: see figure 2 As shown, in the virtual test system, a control node and more than two computing nodes interconnected through the network are set up, and a worker thread for completing the data processing and model calculation tasks of the node and a data output data output node are set in each node. A sending thread, a data receiving thread for inputting data, and a shared memory area shared by the aforementioned three (depending on the size of the actual interactive data). The working thread of the control node is the control thread. An important function of the control thread is to maintain the logical time of the system and periodically publis...

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Abstract

A node synchronization method of a distributed virtual test system includes the following steps: (1) node configuration: one control node and more than one operation node which are interconnected through the network are arranged in the virtual test system; and the virtual test system is started and initialized; (2) hierarchical synchronization: a first grade synchronization: in each node, a data sending thread reads data provided by working threads by sharing memory areas so as to achieve logical time synchronization; a second grade synchronization: between the nodes, a control thread controls and coordinates the working threads in the operation nodes in unified mode through the network so as to achieve synchronization of logical time and step length propulsion; and a third grade synchronization: in each node, a data receiving thread sends data to the working threads by sharing the memory areas so as to achieve synchronization of the logical time. The node synchronization method of the distributed virtual test system has the advantages of being simple in principle and convenient to operate, can guarantee node time synchronization, simplifies system design, improves operation efficiency of the whole system, and the like.

Description

technical field [0001] The invention mainly relates to the field of virtual test systems, in particular to a node synchronization method suitable for distributed virtual test systems. Background technique [0002] Due to its low cost, repeatable and non-destructive characteristics, the virtual test system has gradually become an important evaluation method and test method, and has developed rapidly in various fields of the national economy. In the distributed virtual test system, multiple nodes distributed in different locations jointly complete the test tasks, and each node is generally connected through a local area network, and the communication and data interaction between each other are completed through the computer network. Since the nodes are distributed in different geographical locations and need to interact with each other in real time, how to ensure the consistency of the data of each node and the time-related events in terms of time logic is a key problem that t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/52
Inventor 胡君朋黄芝平刘纯武蔡郭汕张羿猛苏绍璟郭晓俊
Owner NAT UNIV OF DEFENSE TECH
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