Parallel message arbitration device and method

Abstract

The embodiment of the invention provides a parallel message arbitration device and method, and the device comprises a message preprocessing module, a fast queue module, a message station, a uniform rotation arbitration module, a weighted rotation arbitration module, a station access module, and a message unpacking module. The message preprocessing module is used for distributing message descriptors to the message station and the fast queue module, the request sending arbitration module, the uniform rotation arbitration module and the weighted rotation arbitration module which are corresponding to the message descriptors and are generated in the message station and the fast queue module sequentially arbitrate the id of the message station, and the message unpacking module obtains the arbitration result of the arbitration module, and accesses the message station through the message station access module to complete the read-write request of the message unpacked information. By adopting the device, the flow balance of the multi-process message can be realized, the priority scheduling of the fast message is supported, and the low-delay sending of the fast message is realized. Meanwhile, hardware resource overhead is saved as much as possible.

Description

technical field [0001] The invention relates to the technical field of NIC chip design, in particular to a parallel message arbitration device and method. Background technique [0002] The NIC chip is mainly used in high-performance computing systems and high-speed data centers. It is the interface for the CPU to connect to the high-speed network, and realizes the sending and receiving of messages between nodes. The general process of message sending is: the CPU delivers the message descriptor to the NIC, and the NIC parses the descriptor and forms a packet to send to the Internet. When a message is sent, each message may be split into a single or multiple message packets to complete data transmission. When the message data volume is not greater than MTU (Maximum Transaction Unit, maximum transmission unit), a single packet can complete all data transmission. When a message When the amount of data is greater than the MTU, multiple packets are required to complete all data t...

AI Technical Summary

Problems solved by technology

[0003] When multiple processes send messages at the same time, the CPU will deliver a large number of message descriptors to the NIC. The NIC needs to ensure that the messages of each process can be sent in a balanced manner. Serial scheduling or unbalanced scheduling will lead to starvation of process communication and easily lead to network traffic. Imbalance, affecting overall communication performance

Images