Data transmission method of reflective memory network

Abstract

The invention discloses a data transmission method of a reflective memory network. The method comprises the following steps of: partitioning the onboard memory of a reflective memory card into a global variable area and a node data area; partitioning a data storage area for each node; partitioning a corresponding data position recording area for each node data storage area; when a node writes data into the onboard memory, writing the data into existing data in the data storage area corresponding to the node and updating the data to be position offset according to the data storage position; and when the node reads data, firstly reading the current position offset of a target node, and if the current position offset is different from the position offset of the target node, updating the position offset and reading the data of the target node. In the embodiment of the invention, the node can avoid covering unread data while writing data into the onboard memory, and can judge whether the data read from the target node are repeating data or not, so that data confusion in the data transmission process can be avoided, and further the data transmission efficiency can be improved.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a reflection memory network data transmission method. Background technique [0002] In the data transmission of optical fiber network, reflective memory network has been more and more widely used; reflective memory network means that each node in the network connected by optical fiber is equipped with reflective memory card, and each reflective memory card includes dual port memory, the write operation of each node on its own reflective memory card can be synchronized on the reflective memory card of each node in the network. Therefore, each node only needs to access its own reflective memory card when accessing network data. Specifically, each reflective memory card includes a data storage area corresponding to each node in the network, and each data storage area is used to store network data of its corresponding node. Each node can receive the data sent by the node correspond...

AI Technical Summary

Problems solved by technology

Specifically, when a node writes data to the corresponding location of the onboard memory, other nodes read the data; since there is no good handshake mechanism between nodes, after a node writes data in its onboard memory, It is impossible to know whether other nodes have read the written data, and when other nodes read data, they cannot know whether the data to be read is the latest data

In this way, when there is a need for data transmission between multiple nodes, data may be lost, which will easily cause data transmission confusion and reduce transmission efficiency

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