Method for accelerating lattice-Boltzmann by utilizing graphic processing units (GPUs)
A lattice and lattice point technology, applied in the fields of computer high-performance computing and computational fluid dynamics, can solve the problems of low peak floating-point computing power of CPU, large network transmission overhead, large time, etc., to reduce construction costs and management, and improve processing. performance, the effect of reducing power consumption
Inactive Publication Date: 2012-09-19
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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The invention provides a method for accelerating a lattice-Boltzmann by utilizing graphic processing units (GPUs), and relates to a GPU at a host port and a GPU at an equipment port. The method comprises the steps that the host port gives parameters such as computational domains, the reference length, the freestream velocity, the density, reynolds numbers and the like according to physical problems, and divides thread numbers of a design kernel according to a grid; and the equipment host calculates equilibrium state distribution functions of all lattice points in each direction through the macroscopic parameters (the density, the speed, the reynolds numbers, the viscosity coefficient, and the like), uses the equilibrium state distribution functions as initial fields of the calculation, parallelly solves a discrete equation and processes boundaries, and returns a result finally obtained through iteration to the host port. According to the method, the migration and the collision in the lattice-Boltzmann method are calculated by utilizing the rapid calculation characteristic of the GPU at the equipment port, and the iteration process of the lattice-Boltzmann method is accelerated through coordination operation of the GPU at the host port and the GPU at the equipment port.
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Iteration processState distribution +5
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