Hypre mini-app for nalu-wind

A mini-app to use HYPRE solvers and preconditioners on linear systems generated by the nalu-wind low-Mach code.

This app reads the linear system matrix, RHS, and reference solution data in MatrixMarket and HYPRE IJ formats. See example input file for available options.

Installation and Usage

Dependencies

• Working C++ and C compilers. C++ compiler must support C++11 or higher.
• Working MPI installation. Need access to mpicc wrappers.

The mini-app also depends on HYPRE and YAML-CPP that are available within the repository as submodules. The build script will compile these submodules as part of the build process.

Basic usage

git clone --recurse-submodules git@github.com:Exawind/hypre.git
cd hypre_app

# create build directory
mkdir build
cd build

# Copy sample build script
cp ../etc/build_script_tmpl.sh mini-app-build.sh

# Edit build script and add necessary configuration

# Build hypre, configure mini-app and compile
./mini-app-build.sh

# Execute (see etc/hypre_app.yaml for an example input file)
mpiexec -np <N> src/hypre_app INPUT_FILE