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Method for optimizing cascade Retimer link negotiation process

A link and cascading technology, applied in the computer field, can solve problems such as slow transmission rate, affecting transmission efficiency, and complicated negotiation process, and achieve the effect of improving performance

Active Publication Date: 2019-07-19
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the cascaded Retimer link, the cascaded Retimer will divide the negotiated link into three parts, making the negotiation process more complicated
The complex negotiation process may make the transmission rate of the PCIE link less than the ideal value, resulting in too slow transmission rate and affecting transmission efficiency

Method used

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  • Method for optimizing cascade Retimer link negotiation process
  • Method for optimizing cascade Retimer link negotiation process
  • Method for optimizing cascade Retimer link negotiation process

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Embodiment Construction

[0023] Embodiments of the present disclosure are described below. It is to be understood, however, that the disclosed embodiments are merely examples and that other embodiments may take various alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. As will be understood by persons of ordinary skill in the art, various features shown and described with reference to any one figure can be combined with features shown in one or more other figures to create embodiments not explicitly shown or described . Combinations of features shown provide representative embodiments for typical applications. However, various combinations and modifications of the features consist...

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Abstract

The invention provides a method for optimizing a cascade Retimer link negotiation process. The method comprises the following steps: determining the maximum number of transmitting end equalizers whichcan be debugged by each part of links based on the preset maximum total negotiation time length of the whole link and the time length consumed by each transmitting end equalizer; determining a parameter value suitable for each part of link through simulation; and on the basis of the parameter values, selecting parameters which do not exceed the maximum number to configure the sending end equalizer of the link. According to the invention, the Retimer can debug less TXEQ as much as possible in the negotiation process, so that the negotiation process is completed as soon as possible.

Description

technical field [0001] The present invention generally relates to the field of computers, and more particularly relates to a method for optimizing the negotiation process of cascaded Retimer (retimer) links. Background technique [0002] In the AI ​​server, computing nodes and management nodes are mostly connected through the PCIE bus. Due to the high speed and high bandwidth of the PCIE bus, it is the main IO bus connecting the CPU and various devices. In a typical structure, one or more PCIE switches are connected to the CPU, and multiple GPUs are connected to the PCIE switch, and they are connected to each other through the PCIE bus. From the CPU to the PCIESwitch and then to the GPU, there will be a long link in between, which is a great challenge to signal integrity, so one or two PCIE Retimers are generally added as repeaters in the middle of the link. For a structure with two Retimers in one link, we call it a cascaded Retimer link. [0003] In the PCIE link, the PC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/803H04L29/08
CPCH04L47/125H04L67/1001
Inventor 魏冰
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD