I/O parallel acceleration method and device for ROMS mode in regional coupling forecasting system, and medium

A technology for forecasting systems and regions, applied in the input/output process of data processing, input/output to record carriers, instruments, etc., can solve problems such as low I/O efficiency, achieve low efficiency, improve performance, and alleviate memory effect of stress

Active Publication Date: 2019-09-06
青岛海洋科技中心
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Problems solved by technology

[0003] Aiming at the problem of low I / O efficiency, an I / O parallel acceleration method of ROMS mode in the regional coupling forecasting system is proposed. In the ROMS marine computing mode, parallel I / O input and output are designed to optimize the underlying I / O framework of ROMS. Improved I / O performance for Ocean Mode ROMS

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  • I/O parallel acceleration method and device for ROMS mode in regional coupling forecasting system, and medium
  • I/O parallel acceleration method and device for ROMS mode in regional coupling forecasting system, and medium

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[0025] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Some, but not all, embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The relative arrangement of the steps set forth in the examples does not limit the scope of the invention unless specifically stated otherwise. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized...

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Abstract

The invention provides an I/O parallel acceleration method and device for an ROMS mode in a regional coupling forecasting system and a computer readable storage medium, and relates to the technical field of the regional coupling forecasting system. The I/O parallel acceleration method comprises the steps: dividing the number of global grids in the x direction and the y direction and the number ofprocesses in the x direction and the y direction; constructing a one-to-one mapping relation between input and output data of each computing process and the integral input and output file, and constructing a mapping relation between the computing processes and I/O process data transmission; reading the file data in parallel by the I/O process and distributing the data to each computing process; and calculating a result by the ROMS, collecting data from each calculation process by the I/O process and storing the data in parallel. In the I/O parallel acceleration method, parallel I/O input and output are designed in the ROMS marine computing mode, and an ROMS bottom layer I/O framework is optimized, and the I/O performance of the ROMS in the marine mode is improved.

Description

technical field [0001] The present invention relates to the technical field of regional coupling forecasting systems, in particular to an I / O parallel acceleration method, device and computer-readable storage medium of ROMS mode in the regional coupling forecasting system. Background technique [0002] The WRF (Weather Research and Forecasting) model is used for the atmospheric part of the "Two Oceans and One Sea" regional coupled forecasting system, and the ROMS (Regional Ocean Modeling System) is used for the ocean part. In the process of marine numerical simulation, with the expansion of the calculation area and the improvement of calculation accuracy, a large amount of data output makes the I / O efficiency a bottleneck for the improvement of the overall performance of the system. At present, the ROMS resolution used by the regional coupled forecasting system is 3km, and only one process is used for input and output, so the low I / O performance has become a bottleneck affec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/0689G06F3/0631Y02A90/10
Inventor 陈玉虎魏志强许佳立褚宏奎汪文杰董晓睿彭轶旋贾东宁桂琳
Owner 青岛海洋科技中心
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