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Global wiring optimization method based on wiring performance prediction

A technology of global wiring and linear prediction, applied in neural learning methods, special data processing applications, instruments, etc., can solve problems such as relying on manual work, time-consuming, difficult to adapt to design rules, etc., achieving fast speed, high prediction accuracy, good wiring effect

Pending Publication Date: 2021-11-19
上海立芯软件科技有限公司
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Problems solved by technology

[0003] The current routability prediction is mainly based on the utilization rate of wiring resources in each area and the number of design rule violations. In essence, it roughly measures the factors that affect the consumption of wiring resources. There are manual, time-consuming, and difficult to adapt to increasingly complex design rules. and other limitations

Method used

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  • Global wiring optimization method based on wiring performance prediction
  • Global wiring optimization method based on wiring performance prediction
  • Global wiring optimization method based on wiring performance prediction

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0042] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0043] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention relates to a global wiring optimization method based on wiring performance prediction. The method comprises the following steps: firstly, defining key features according to a layout result after detailed layout, then training by utilizing extracted feature data and actual data for measuring wiring performance after detailed wiring to obtain a wiring performance prediction model, finally embedding the model into a layout wiring algorithm to guide the wiring process and overcome wiring congestion. According to the invention, overflow and wire length in a global wiring result can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of VLSI physical design automation, in particular to a global routing optimization method based on routability prediction. Background technique [0002] Chip physical design generally has optimization goals such as routability, delay, power consumption, area, and manufacturability. With the development of integrated circuit manufacturing processes and the reduction of feature sizes, routability has gradually become one of the most important goals. . The actual routing congestion and routability can only be obtained after detailed routing is completed. Routing prediction refers to the estimation of routing congestion and routability in the design stage before detailed routing, so that it can be optimized in the early stage of physical design. Routing congestion is of great significance to chip design quality and cycle shortening. [0003] The current routability prediction is mainly based on the utilization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/3947G06N3/04G06N3/08
CPCG06F30/3947G06N3/08G06N3/045
Inventor 张旋宿淼迪丁鸿志翁绍鸿邹长忠陈建利
Owner 上海立芯软件科技有限公司
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