Function create_index_map

cpp/test/common/index_map.cpp:23–38

namespace
{
common::IndexMap create_index_map(MPI_Comm comm, int size_local, int num_ghosts)
{
  const int mpi_size = dolfinx::MPI::size(comm);
  const int mpi_rank = dolfinx::MPI::rank(comm);

  // Create some ghost entries on next process
  std::vector<std::int64_t> ghosts(num_ghosts);
  for (int i = 0; i < num_ghosts; ++i)
    ghosts[i] = (mpi_rank + 1) % mpi_size * size_local + i;

  std::vector<int> global_ghost_owner(ghosts.size(), (mpi_rank + 1) % mpi_size);

  // Create an IndexMap
  return common::IndexMap(MPI_COMM_WORLD, size_local, ghosts,
                          global_ghost_owner);
}

void test_scatter_fwd(int n)
{