RDMA message mechanism based on multi-track redundant response and implementation device thereof

Abstract

The invention relates to the technical field of a remote main memory access protocol in a high-speed interconnection network, in particular to an RDMA message mechanism based on multi-track redundantresponse and an implementation device thereof. The RDMA message mechanism based on multi-track redundant response comprises the following steps: 1) a message initiator adopts multi-message parallelsplitting, and data packets of different messages and data packets of the same message are sent out of order to surf the Internet; 2) encoding information is set for each request packet of the message, and the data volume is counted by a message receiver according to the encoding information; 3) receiving of each request packet does not generate a response packet, when receiving of the last request packet of the message is completed, the response packet is generated and returned to the message initiator, and the message initiator generates a message completion notification by itself; 4) the response packet of the message is sent through multiple network channels in multiple copies. According to the RDMA message mechanism provided by the invention, the message-level multi-track redundant response is adopted, the reliable transmission of the message is ensured, the number of the response packets is reduced, and the network transmission efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of remote main memory access protocols in high-speed interconnection networks, in particular to an RDMA message mechanism based on multi-track redundant responses and an implementation device thereof. Background technique [0002] In a high-performance computing system, the RDMA message mechanism is used for remote main memory access between computing nodes, and the RDMA message mechanism is generally integrated in the network interface chip. [0003] At present, in the field of high-performance computing systems, commercial network interface chips are basically monopolized by Mellanox, and the RDMA mechanism of its network interface chips is implemented strictly according to the InfiniBand protocol. The RDMA of the InfiniBand protocol adopts the sliding window mechanism to respond to each packet. When there are multiple packets of messages, each packet is transmitted in order. Out of order, generally only ...

AI Technical Summary

Problems solved by technology

The RDMA of the InfiniBand protocol uses a sliding window mechanism to reply each packet. When there are multiple packets of messages, each packet is transmitted in order. Out of order, generally only limited to the use of deterministic routing

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