Lattice-Boltzmann code leveraging ArrayFire

Paper: https://doi.org/10.3390/math9151793

If you use the code from this repository, please cite this paper:

@article{takac2021lbm,
    author = {Takáč, Michal and Petráš, Ivo},
    title = {Cross-Platform GPU-Based Implementation of Lattice Boltzmann Method Solver Using ArrayFire Library},
    journal = {Mathematics},
    volume = {9},
    year = {2021},
    number = {15},
    article-number = {1793},
    url = {https://www.mdpi.com/2227-7390/9/15/1793},
    issn = {2227-7390},
    abstract = {This paper deals with the design and implementation of cross-platform, D2Q9-BGK and D3Q27-MRT, lattice Boltzmann method solver for 2D and 3D flows developed with ArrayFire library for high-performance computing. The solver leverages ArrayFire’s just-in-time compilation engine for compiling high-level code into optimized kernels for both CUDA and OpenCL GPU backends. We also provide C++ and Rust implementations and show that it is possible to produce fast cross-platform lattice Boltzmann method simulations with minimal code, effectively less than 90 lines of code. An illustrative benchmarks (lid-driven cavity and Kármán vortex street) for single and double precision floating-point simulations on 4 different GPUs are provided.},
    doi = {10.3390/math9151793}
}

Building C++ code

Once ArrayFire is installed on your machine, compile the project using cmake and make:

mkdir build
cd build
cmake ..
make

If ArrayFire is not installed to a system directory, you will need to specify the directory which contains the ArrayFireConfig.cmake as an argument to the cmake invocation. This configuration file is located within the share/ArrayFire subdirectory of the ArrayFire installation. For example, if you were to install ArrayFire to the local directory within your home folder, the invocation of cmake above would be replaced with the following:

cmake -DArrayFire_DIR=$HOME/local/share/ArrayFire/cmake ..

Note to self: cmake -DArrayFire_DIR=/opt/arrayfire/share/ArrayFire/cmake ..

Building Rust code

Run the examples by running

cd rust
cargo run --example channel

or

cd rust
cargo run --example lid

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• Email: mailto:[email protected]