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Large-scale high-performance RoCEv2 network construction method and system

A network construction, high-performance technology, applied in the computer field, can solve the problems of large average path length, small number of paths, poor performance of expander data center, etc., and achieve good network performance, short average length, and good network performance.

Pending Publication Date: 2022-01-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, EDST-based routing cannot effectively utilize network resources: 1) the number of paths is small; 2) the average path length is large; 3) some network links may be idle
Therefore, the performance of the expander data center using EDST routing may be poor

Method used

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  • Large-scale high-performance RoCEv2 network construction method and system
  • Large-scale high-performance RoCEv2 network construction method and system
  • Large-scale high-performance RoCEv2 network construction method and system

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Experimental program
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Embodiment

[0049] A high-performance RoCEv2 large-scale cluster design method provided according to the present invention includes:

[0050] Step 1: Construct a k-layer virtual Clos network;

[0051] Step 2: Based on the above-mentioned virtual Clos network, calculate the path between any two virtual switches in the first layer, and compress and deduplicate the path;

[0052] Step 3: Load balance traffic between any two physical switches.

[0053] Specifically, the step 1 includes:

[0054] Step 1.1: Given N physical switches, denoted as S 1 ,S 2 ,...,S N . Each physical switch has p ports, among which h ports are connected to the server, and s ports are connected to the switch, obviously p=s+h. For physical switch S i , 1≤i≤N, divide it into k virtual switches and record as Obviously, the total number of ports of k virtual machines divided by a single physical switch should satisfy the physical constraint s. per virtual switch All belong to a virtuallayer-j, figure 1 An exa...

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Abstract

The invention provides a large-scale high-performance RoCEv2 network construction method and system. The method comprises the following steps: step 1, constructing a virtual Clos network; step 2, based on the virtual Clos network, calculating paths between any two virtual switches in the first layer, and carrying out compression and duplicate removal on the paths; and step 3, carrying out load balancing on flow between any two physical switches to obtain an expected network. Routing found by the invention does not contain a loop, so that PFC-deadlock can be avoided when RoCEv2 flow is served in a network architecture disclosed by the invention. In addition, compared with loop-free routing based on k-edge-disjoint-spanning-trees, the invention has the advantages that more paths can be found, and an average length of the paths is shorter, so that the performance of a network adopting the invention is better.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a large-scale high-performance RoCEv2 network construction method and system. Background technique [0002] With the rapid growth of Online Internet Service and cloud computing, large Internet service providers have deployed RDMA over Ethernet Commodity (RoCEv2) in their commercial Ethernet Clos data centers to serve latency-sensitive and high-throughput applications. Thanks to RoCEv2's UDP-based transmission mechanism, RoCEv2 can adapt to existing Ethernet data centers without purchasing dedicated equipment. High-performance RoCEv2 needs to ensure that the underlying network is lossless, so PFC is used to ensure that the network is lossless. But the deadlock caused by PFC brings security challenges to the large-scale deployment of RoCEv2. Due to the hierarchical structure of the Clos data center, the up-down routing adopted in the Clos network can prevent deadlocks f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L47/125H04L45/586
CPCH04L47/125H04L45/586
Inventor 张琦周赵世振
Owner SHANGHAI JIAO TONG UNIV