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Installation — Linux x86_64, CPU only

For Linux machines without an NVIDIA or AMD GPU. CPU and MPI variants only.

System packages

sudo apt install -y build-essential cmake git \
                    libblas-dev liblapack-dev \
                    libopenmpi-dev   # only for MPI builds

libmkl-dev is optional and faster than the reference LAPACK.

MPI

System OpenMPI (apt install libopenmpi-dev) is sufficient for CPU+MPI Exasim. MPI_PREFIX for use in common.md:

MPI_PREFIX=$(dirname $(dirname $(which mpicc)))   # usually /usr

Vendored dependencies

Follow common.md for GKlib + METIS + ParMETIS, Kokkos serial, SymEngine + text2code.

Build Exasim

CPU only:

cd $EXASIM
cmake -S install -B build_cpu \
    -DEXASIM_CUDA=OFF -DEXASIM_HIP=OFF \
    -DEXASIM_MPI=OFF  -DEXASIM_NOMPI=ON \
    -DKokkos_DIR=$EXASIM/kokkos/buildserial/lib/cmake/Kokkos \
    -DEXASIM_BUILD_LIBRARY_EXAMPLES=ON
cmake --build build_cpu -j16

CPU + MPI:

cmake -S install -B build_mpi \
    -DEXASIM_CUDA=OFF -DEXASIM_HIP=OFF \
    -DEXASIM_MPI=ON   -DEXASIM_NOMPI=OFF \
    -DWITH_PARMETIS=ON \
    -DKokkos_DIR=$EXASIM/kokkos/buildserial/lib/cmake/Kokkos \
    -DEXASIM_BUILD_LIBRARY_EXAMPLES=ON \
    -DMPI_CXX_COMPILER=$(which mpicxx) \
    -DMPI_C_COMPILER=$(which mpicc)
cmake --build build_mpi -j16

Verification

ctest --test-dir build_cpu -R "poisson2d:.*:cpu" -j 8
ctest --test-dir build_mpi -R "poisson2d:.*:mpi" -j 8