Gmsh and WriteVTK remain optional weakdeps; these extensions implement the
typed mesh import and VTU export entry points used by examples and tests.
- Import linear Tris, Quads, Tets, Hexes from GMSH MSH with physical groups
- Export Mesh to VTU with optional point and cell named tuples
- JuliaFEMCUDAExt package extension (loaded with 'using CUDA')
- ElasticityDataGPU: All data on device (nodes, elements, BCs, node-to-elem map)
- initialize_gpu_data!() transfers Physics to GPU with renumbering
- nodal_assembly_kernel!() computes stiffness 3×3 blocks per node
- compute_element_stresses_kernel!() element-level stress computation
- apply_surface_traction_kernel!() Neumann BC on surfaces
- apply_dirichlet_kernel!() penalty method for essential BCs
- cg_solve_matfree_gpu!() matrix-free CG solver
- solve_newton_krylov_gpu!() inexact Newton with GMRES-style restart
- initialize_backend(::GPU) and solve_backend!() dispatch methods
- 934 lines: Pure GPU implementation with zero CPU-GPU transfers during solve
Jukka Aho