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Large-scale parallel method suitable for coupled transportation calculation

A characteristic line and coarse mesh technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as parallel mismatch of multiple coupling algorithms, waste of resources, etc., to improve parallel efficiency, avoid waste, and make full use of computing resources Effect

Active Publication Date: 2016-12-07
XI AN JIAOTONG UNIV
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Problems solved by technology

[0007] In order to realize the large-scale parallelism of coupled transport calculation, the object of the present invention is to provide a large-scale parallel method suitable for coupled transport calculation, which will realize multiple Parallelization of methods, and solve the problem of waste of resources caused by parallel mismatch of multiple coupling algorithms

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0020] Considering the characteristics of the existing parallel machines, the distributed memory structure combined with the shared memory structure is used for calculation, and the characteristics of the two parallel schemes are fully utilized. The most commonly used distributed memory structure is the Message Passing Interface (MPI), and the most commonly used shared memory structure is Shared Memory Parallel Programming (OpenMP). MPI has the advantage of large parallel scale, while OpenMP parallel scale is limited because of shared memory, but has the advantage of avoiding communication within the node. When choosing communication, it is necessary to reasonably consider the advantages and disadvantages of the two parallel modes and choose an appropriate parallel strategy.

[0021] The steps of a large-scale parallel method suitable for coupl...

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Abstract

The invention discloses a large-scale parallel method suitable for coupled transportation calculation. Calculation of a characteristic line method, calculation of a one-dimensional discrete ordinate method and accelerated calculation of coarse mesh finite difference are all expanded into triple parallelism corresponding to a two-dimensional characteristic line method, so that a mismatching phenomenon is thoroughly eliminated. According to the method, the parallelization of various methods is realized based on two-dimensional and one-dimensional coupled transportation methods, and the problem of resource waste caused by mismatching of various coupled algorithms during parallelization is solved.

Description

technical field [0001] The invention relates to the fields of nuclear reactor core design and reactor physical calculation, and in particular relates to a large-scale parallel method suitable for coupled transport calculation. Background technique [0002] With the increasing computing power of computers, the field of reactor design hopes to adopt more accurate design models, minimize the artificial approximation and empirical corrections made in the previous reactor calculation process, and achieve high-fidelity reactor core physical calculations. Reactors are simulated for precise analysis. This new generation of reactor calculation method is called numerical reactor technology, which is considered to be the most important technology for reactor analysis in the future. It is of great significance to the safety analysis of reactors and the design improvement of new reactors. It has become the world leader in my country's nuclear power technology capabilities. Levels provide...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 刘宙宇赵晨郑友琦李云召吴宏春
Owner XI AN JIAOTONG UNIV
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