Abstract: This work investigated the implementation of lattice Boltzmann method(LBM) with CUDA on the CPU GPU heterogeneous platform with multiple parallel programming models,MPI+CUDA and MPI+OpenMP+CUDA,which shows good performance speedup. A method used to justify the computational load ratio was proposed in this paper to balance the computational time on CPU and GPUs, which provides insightful information about the multi-level parallclization and efficient usage of different computational resource on the CPU+GPU heterogeneous platform.

Key words: Heterogeneous platform, GPU, LBM, Parallel