From: Wolfgang Bangerth Date: Wed, 28 Aug 2024 02:49:09 +0000 (-0600) Subject: Rename a variable and better document steps. X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70af0bb1faa7b041bfc88fd73b29b0aea5ed190c;p=dealii.git Rename a variable and better document steps. --- diff --git a/include/deal.II/lac/affine_constraints.templates.h b/include/deal.II/lac/affine_constraints.templates.h index 2f311b9e56..5c9e66d3a5 100644 --- a/include/deal.II/lac/affine_constraints.templates.h +++ b/include/deal.II/lac/affine_constraints.templates.h @@ -442,7 +442,7 @@ namespace internal locally_relevant_constraints.end()); }; - // 0) collect constrained indices of the current object + // step 0: Collect the indices of constrained DoFs we know of: IndexSet constrained_indices(locally_owned_dofs.size()); std::vector constrained_indices_temp; @@ -452,7 +452,9 @@ namespace internal constrained_indices.add_indices(constrained_indices_temp.begin(), constrained_indices_temp.end()); - // step 1: identify owners of constraints + // step 1: Identify the owners of DoFs we know to be constrained. + // Of course, we are likely to own a good share of the DoFs + // we know to be constrained -- and that is ok. std::vector constrained_indices_owners( constrained_indices.n_elements()); Utilities::MPI::internal::ComputeIndexOwner::ConsensusAlgorithmsPayload @@ -627,8 +629,8 @@ AffineConstraints::make_consistent_in_parallel( unsigned int iteration_count = 0; for (; iteration_count < max_iterations; ++iteration_count) { - // 1) Get all locally relevant constraints ("temporal constraint matrix"). - const auto temporal_constraint_matrix = + // 1) Get all locally relevant constraints we need to know about: + const std::vector imported_constraints = internal::compute_locally_relevant_constraints( *this, locally_owned_dofs, @@ -637,7 +639,7 @@ AffineConstraints::make_consistent_in_parallel( // 2) Add untracked DoFs to the index sets. constrained_indices.clear(); - for (const auto &line : temporal_constraint_matrix) + for (const auto &line : imported_constraints) { constrained_indices.push_back(line.index); for (const auto &entry : line.entries) @@ -653,9 +655,9 @@ AffineConstraints::make_consistent_in_parallel( constraints_to_make_consistent.add_indices(constrained_indices.begin(), constrained_indices.end()); - // 3) Clear and refill this constraint matrix. + // 3) Clear and refill this constraint matrix. Also resolve chains: this->reinit(locally_owned_dofs, locally_stored_constraints); - for (const auto &line : temporal_constraint_matrix) + for (const auto &line : imported_constraints) this->add_constraint(line.index, line.entries, line.inhomogeneity); // 4) Stop loop if converged.