serif serif::backend serif::compile_time_checks serif::dimensions serif::discretization serif::eos serif::equations serif::geometry serif::mapping serif::meta serif::model serif::operators serif::solver serif::utils backend::mfem::Vector using serif::Vector = backend::mfem::Vector Vector serif::Vector backend::mfem::DenseMatrix using serif::DenseMatrix = backend::mfem::DenseMatrix DenseMatrix serif::DenseMatrix backend::mfem::SparseMatrix using serif::SparseMatrix = backend::mfem::SparseMatrix SparseMatrix serif::SparseMatrix backend::mfem::LinearOperator using serif::LinearOperator = backend::mfem::LinearOperator LinearOperator serif::LinearOperator void void serif::backend::mfem::initialize () initialize serif::initialize Initialize the selected numerical runtime once, before application work begins. Call on the main thread. An existing MPI session remains externally owned; a session started here is finalized by MFEM at process exit. Serial builds need no initialization.