Message transmission method and device and interconnection interface

Abstract

The embodiment of the invention provides a message transmission method and device and an interconnection interface. The message transmission method comprises the steps that a sending node judges whether a main link has an unrecoverable fault or not, if the main link has the unrecoverable fault, at least one backup link, except the main link, is selected from a plurality of communication links to send a message to a receiving node, and the receiving node sends the message to the receiving end of the main link. According to the method, for two nodes which have communication through multiple Links in an interconnection system, when it is determined that part of the Links have the unrecoverable faults, the messages in retransmission Buffer of the sending end of the Links with the unrecoverable faults are sent to the backup links, the backup links send the messages to the receiving ends of the Links with the unrecoverable faults, the capacity of the interconnection system for resisting accident abnormal conditions is greatly improved, and high reliability of the interconnection system is ensured.

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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