A new parallelization algorithm of ocean model with explicit scheme

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Fu, X.D.^1

College of Information Science and Engineering, Ocean University of China, Qindao

266100, China^1

关键词: Discretizations;    Explicit schemata;    Explicit scheme;    Governing equations;    Parallelization algorithms;    Parallelizations;    Reduced gravity;    Transmission modules;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012017/pdf
DOI  :  10.1088/1755-1315/82/1/012017

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper will focus on the parallelization of ocean model with explicit scheme which is one of the most commonly used schemes in the discretization of governing equation of ocean model. The characteristic of explicit schema is that calculation is simple, and that the value of the given grid point of ocean model depends on the grid point at the previous time step, which means that one doesn't need to solve sparse linear equations in the process of solving the governing equation of the ocean model. Aiming at characteristics of the explicit scheme, this paper designs a parallel algorithm named halo cells update with tiny modification of original ocean model and little change of space step and time step of the original ocean model, which can parallelize ocean model by designing transmission module between sub-domains. This paper takes the GRGO for an example to implement the parallelization of GRGO (Global Reduced Gravity Ocean model) with halo update. The result demonstrates that the higher speedup can be achieved at different problem size.