Message transmission method, device and interconnection interface

Abstract

Embodiments of the present invention provide a message transmission method, device, and interconnection interface. The method includes: the sending node judges whether an unrecoverable fault occurs on the active link, and if an unrecoverable fault occurs on the active link, the At least one backup link other than the active link is selected in the path to send the message to the receiving node, so that the receiving node sends the message to the receiving end of the active link. In this method, for two nodes communicating through multiple Links in the interconnection system, when it is determined that some of the Links have an unrecoverable failure, the message in the cache buffer of the sender in the unrecoverable link is retransmitted Send to the backup link, so that the backup link sends these messages to the receiving end of the unrecoverable link, which greatly improves the ability of the interconnection system to resist unexpected abnormal situations and ensures the high reliability of the interconnection system.

Description

technical field [0001] The invention relates to communication technology, in particular to a message transmission method, device and interconnection interface. Background technique [0002] As the performance requirements of the computing system become more and more intense in the market, the scale of the computing system becomes larger and larger, and various types of interconnection interfaces are usually used to interconnect computing nodes in the computing system. The interconnection interface used for the computing system, in order to adapt to the importance of the business carried by the computing system and the complexity of the interconnection protocol, etc., in addition to meeting the performance of high bandwidth and low delay, it also needs to have high reliability. [0003] The existing technology usually adopts the retransmission buffer (Buffer) retransmission technology to ensure the high reliability of the interconnection interface. figure 1 It is a schematic...

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Problems solved by technology

[0004] However, the above-mentioned retransmission buffer retransmission technology can only guarantee the occasional recoverable failure scenario of the link, and for the unrecoverable link failure scenario, the message in the retransmission buffer has not been confirmed by the other party, resulting in The system hangs, and the system can continue to work only after the fault is eliminated and the link is reconnected by human intervention, and the reliability of the interconnected system cannot be guaranteed

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