CFD (Computational Fluid Dynamics) accelerating method for multi-region structured grids on GPU (Ground Power Unit) based on grouped multi-streams

Abstract

The invention discloses a CFD (Computational Fluid Dynamics) accelerating method for multi-region structured grids on a GPU (Ground Power Unit) based on grouped multi-streams, and aims to accelerate the CFD application of the multi-region structured grids running on the GPU. The technical scheme is as follows: the method comprises the following steps of: constructing a CPU (Central Processing Unit) and GPU software and hardware platform, and deploying CFD application software of the multi-region structured grids; implementing grouped multi-stream management software and time step advancing software, setting a grouped multi-stream parameter, a CFD time iteration step number and a convergence condition, implementing GPU storage management software to initialize the usage mode of a storage space of the GPU, pre-assigning the storage space of the GPU, and adjusting the storage of the GPU as required; and implementing the grouped multi-stream management software in time step iteration, and finishing the multi-stream calculation for the CFD application of the multi-region structured grids by using the GPU. The CFD accelerating method can be used for effectively accelerating the CFD application of the multi-region structured grids running on the GPU, calculating multiple grid sub-regions on the overlapped GPUs and realizing the communication between the CPU and the GPU, so that the expense for data transmission between the CPU and the GPU is hidden, and the limitation of smaller whole video memory volume of the GPU is relieved. In addition, the CFD accelerating method is simple and easy to realize and strong in universality.

Description

technical field [0001] The present invention relates to an acceleration method for multi-region structured grid CFD on GPU, especially by using the characteristics of multi-region structured grid CFD partition calculation and GPU stream processing mechanism, according to the storage requirements of CFD application problems and the size of GPU global memory, multiple network A method of grouping grid partitions and using GPU multi-stream acceleration for different grid partitions within the group. Background technique [0002] Computational Fluid Dynamics (CFD), based on theoretical fluid mechanics and computing technology, is an emerging branch of fluid mechanics. CFD solves the governing equations of fluid mechanics through numerical methods, and obtains a quantitative description of the discrete flow field, that is, the so-called numerical solution of the flow field at time and space points, and predicts the law of fluid motion. In the past 30 to 40 years, with the rapid ...

AI Technical Summary

Problems solved by technology

None of the above patents involves traditional CFD application fields, nor does it involve task-level parallelism based on stream processing

Images