This release is a pre-release and may not be stable for production use.
openswmm-gpu-omp
OpenMP (Kokkos) acceleration companion for the OpenSWMM 2D surface solver.
The base openswmm wheel is CPU-only and fully portable (Kokkos-free). This
companion ships a single native plugin (libopenswmm_gpu_omp) that the OpenSWMM
engine discovers and loads at runtime to run the 2D surface solver on the
Kokkos-OpenMP backend.
Install
pip install openswmm # CPU-only base engine
pip install openswmm-gpu-omp # add OpenMP acceleration
That is all. There is no public Python API: at import, the base openswmm
package detects this companion and adds it to the engine's plugin search path
(OPENSWMM_GPU_PLUGIN_PATH). With OPENSWMM_2D_BACKEND left at its auto
default, 2D surface runs then use OpenMP automatically. Setting
OPENSWMM_2D_BACKEND=cpu forces the serial solver; uninstalling this package
reverts to it permanently.
Notes
- OpenMP only — no GPU driver required. Numerics match the serial CPU solver to
~1e-13 (not bit-identical); pin
OPENSWMM_2D_BACKEND=cpuwhere bit-exact reproducibility is required. - The plugin is version-locked to the base engine (
openswmm == <same version>) and additionally ABI-checked at load time.
See docs/2D_GPU_DEFAULTS.md in the engine repository for the full
backend-selection matrix.
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