Download

git clone git@github.com:numpex/apps-petsc.git

PETSc installation

The apps need the PETSc package.

Download it:

git clone -b release https://gitlab.com/petsc/petsc.git

The test of the mini-app app-hpddm-dfn is based on v3.23.6 so switch to this version to be sure that the test results match the references:

cd petsc
git checkout v3.23.6

Assuming that you have C/C++/Fortran compilers, MPI and CMake installed, configure with:

./configure --download-fblaslapack --download-slepc --download-hpddm --download-scalapack --download-mumps

To install basic compilers, MPI and CMake:

sudo apt install build-essential
sudo apt install libopenmpi-dev
sudo apt install cmake

By default, PETSc is compiled in debug mode. To compile it in optimized mode and improve its performance, add --with-debugging=0 to the configure.

Compile with the command indicated at the end of the configure step, of kind:

make PETSC_DIR=/path/to/petsc PETSC_ARCH=arch-linux-c-debug all

Check with the command indicated at the end of the make step, of kind:

make PETSC_DIR=/path/to/petsc PETSC_ARCH=arch-linux-c-debug check

Exit PETSc directory:

cd ..

Set the PETSC_DIR and PETSC_ARCH variables in ~/.bashrc:

export PETSC_DIR=/path/to/petsc
export PETSC_ARCH=<arch install directory> (e.g. arch-linux-c-debug)

source ~/.bashrc

Compilation

Go to the source directory of the PETSc apps repository:

cd apps-petsc/src

Compile app-hpddm-dfn:

make app-hpddm-dfn

Formatting

You can format the source files through clang-format (.clang-format of PETSc v3.23.6):

make clang-format

Test

Go to the root directory:

cd ..

Source the environment variables and launch the test:

source env.sh
run_test

To run a specific test directory:

run_test <test directory path>

To update the references:

run_test <test directory path> ref