This repository provides an interface for applying domain-decomposed solutions of fluid flow ODEs via the Schwarz alternating method through the pressio-demoapps solver and sample problem suite. This serves as a launching point for exploring Schwarz coupling for advection-dominated systems, as well as coupling full-order ("high-fidelity," FOM) solvers to data-driven projection-based reduced-order models (PROMs) via Pressio. The framework exemplified in the test cases (in tests_cpp/) should be easily extensible to any sample case provided by pressio-demoapps.
Executing the test cases requires a copy of the pressio-demoapps source (which has bundled the Eigen library) and the pressiosource. Building and executing the test cases can be performed as
git clone git@github.com:cwentland0/pressio-demoapps-schwarz.git
export CXX=<path-to-your-CXX-compiler>
export PDA_ROOT=<path-to-pressio-demoapps-root>
export PRESSIO_ROOT=<path-to-pressio>
cd pressio-demoapps-schwarz && mkdir build && cd build
cmake -DPDA_SOURCE=${PDA_ROOT} -DPRESSIO_SOURCE=${PRESSIO_ROOT} ..
make -j4
ctest -j4
Python utilities for data extraction, visualization, PROM preparation, and error measurement can be found in the python/ directory. Refer to the README there for instructions on installing and using the associated local package.