Method and device for calculating action of electromagnetic wave and plasma based on OpenMP and MPI

Abstract

The invention provides a method and device for calculating action of electromagnetic wave and plasma based on OpenMP and MPI. The calculation method comprises the following steps: step Y, establishing a solution model of the interaction of the electromagnetic wave and the plasma and carrying out discretization; X, performing adaptive calculation on the discretized solution model, and determining the thread number of the OpenMP and the process number of the MPI; and step U, solving the discretized solution model, including performing parallel calculation according to the OpenMP thread number obtained by adaptive calculation, and performing parallel updating storage on data according to the MPI process number obtained by adaptive calculation to obtain a simulation result of interaction between the electromagnetic wave and the plasma. According to the method, the OpenMP is adopted to perform parallelization processing on the data calculation module, so that the parallel overhead caused by necessary communication operation during MPI parallelization is reduced, and the time required by numerical simulation is saved. In the time iteration process, the data storage module adopts MPI to carry out parallelization processing, and the operation efficiency of the whole program is improved.

Description

technical field [0001] The invention relates to the technical field of simulation, in particular to a calculation method and device for the interaction between electromagnetic waves and plasma based on OpenMP and MPI. Background technique [0002] When high-frequency electromagnetic waves interact nonlinearly with plasma, there are both high-frequency components and low-frequency components. In the process of numerical simulation, the magnitude of the spatial scale that needs to be simulated spans from km to cm, which leads to the required grid The spacing (grid size) is strongly constrained, corresponding to a time step determined by the Courant-Friedrichs-Lewy condition at 10 - 9 10 -10 s magnitude. Full-scale and full-space serial simulation of nonlinear interaction between high-frequency electromagnetic waves and plasma, even if simulating physical phenomena on the order of milliseconds, the total number of iterations reaches 10 6 -10 7 Sub-level, so it needs to con...

AI Technical Summary

Problems solved by technology

Full-scale and full-space serial simulation of nonlinear interaction between high-frequency electromagnetic waves and plasma, even if simulating physical phenomena on the order of milliseconds, the total number of iterations reaches 10 6 -10 7 Sub-level, so it needs to consume a lot of computer resources to obtain simulation results, serial operations can no longer meet the current needs

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