Multi-core parallel method of ray underwater sound propagation model

A propagation model and ray technology, which is applied in the intersection of high-performance computing and computing ocean acoustics, and can solve problems such as linear increase in sound field computing requirements.

Pending Publication Date: 2021-11-19
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

However, with the increase of the sound field calculation sea area and the increase in the number of rays, the sound field calculation requirements in the ray underwater acoustic model increase linearly. bottleneck

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  • Multi-core parallel method of ray underwater sound propagation model
  • Multi-core parallel method of ray underwater sound propagation model
  • Multi-core parallel method of ray underwater sound propagation model

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Embodiment Construction

[0035] The invention will be described in detail below in conjunction with specific embodiments.

[0036] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0037] The invention provides a multi-core parallel method for a ray underwater acoustic propagation model. refer to figure 1 , an overall flow chart of the multi-core parallel method for the ray underwater acoustic propagation model provided by the present invention, specifically including the following steps:

[0038] Step 1: Use performance analysis tools to analyze the serial code of the ray hydroacoustic model, find hot functions in the serial calculation of the ray ...

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Abstract

The invention belongs to the technical field of high-performance calculation and calculation marine acoustics crossing, and particularly relates to a multi-core parallel method of a ray underwater sound propagation model. The method comprises the steps: analyzing a hot spot area of the ray underwater acoustic model through a performance analysis tool, carrying out parallelism analysis on a hot spot function of the ray underwater acoustic model, designing a multi-core parallel strategy, and adopting an OpenMP programming model to realize multi-core parallelism of the ray underwater acoustic model. According to the method, a parallel computing framework of a ray underwater sound propagation model is constructed, the calculation efficiency of a ray underwater sound propagation sound field is effectively improved, and the parallel efficiency of 60% or above is obtained for sound field calculation of a multi-core CPU calculation platform and a typical marine environment; and a rapid sound field calculation model is provided for sonar performance forecasting, underwater target positioning, marine environment parameter inversion and the like.

Description

technical field [0001] The invention belongs to the interdisciplinary technical field of high-performance computing and computing ocean acoustics, and in particular relates to a multi-core parallel method for a ray underwater acoustic propagation model. Background technique [0002] The underwater acoustic propagation model is the modeling of sound propagation in the ocean. The current main underwater acoustic propagation models include normal wave model, parabolic model, and ray model. Among these models, the ray model has more obvious advantages in some cases , For example, in the shallow sea environment, when the sound source is at high frequency, the ray model has good applicability, especially in deep sea conditions, whether it is a high-frequency or low-frequency sound source, the ray model has good adaptability. However, with the increase of the sound field calculation area and the increase in the number of rays, the sound field calculation requirements in the ray und...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F8/41
CPCG06F8/45
Inventor 蓝强马树青颜冰肖汶斌刘巍程兴华王勇献王文珂张理论
Owner NAT UNIV OF DEFENSE TECH
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