OpenMP & TBB & MPI
1 - Why gmsh binaries are not distributed with OpenMP ?
2 - Visual studio 2017 only supports OpenMP 2.0, which is not compatible with gmsh source. VS 2019 just starts to support "experimental" omp 4.0 using LLVM : article. Which is the minimal OpenMP version to compile gmsh ? Some omp pragmas are not recognized with OpenMP 2.0.
3 - TBB is used for OCC ? It's not used in meshing algorithms ?
4 - MPI is only used for remoting with Onelab and for solvers : Lapack & MUMPS & Petsc ?