tools-only FluidSim Installation
Requirements
- Python >= 3.9
- Virtual environment recommended
Installation Methods
Basic Installation
Install fluidsim using uv:
uv pip install fluidsim
With FFT Support (Required for Pseudospectral Solvers)
Most fluidsim solvers use Fourier-based methods and require FFT libraries:
uv pip install "fluidsim[fft]"
This installs fluidfft and pyfftw dependencies.
With MPI and FFT (For Parallel Simulations)
For high-performance parallel computing:
uv pip install "fluidsim[fft,mpi]"
Note: This triggers local compilation of mpi4py.
Environment Configuration
Output Directories
Set environment variables to control where simulation data is stored:
export FLUIDSIM_PATH=/path/to/simulation/outputs
export FLUIDDYN_PATH_SCRATCH=/path/to/working/directory
FFT Method Selection
Specify FFT implementation (optional):
export FLUIDSIM_TYPE_FFT2D=fft2d.with_fftw
export FLUIDSIM_TYPE_FFT3D=fft3d.with_fftw
Verification
Test the installation:
pytest --pyargs fluidsim
No Authentication Required
FluidSim does not require API keys or authentication tokens.