From: Peter Munch <peterrmuench@gmail.com>
Date: Sat, 13 Jun 2020 18:31:37 +0000 (+0200)
Subject: Check in GridRefinement::refine()/coarsen() if cell is locally owned
X-Git-Tag: v9.3.0-rc1~1424^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=739debc31e70d202b4a6ffe3ac4f335fe03c2d44;p=dealii.git

Check in GridRefinement::refine()/coarsen() if cell is locally owned
---

diff --git a/source/grid/grid_refinement.cc b/source/grid/grid_refinement.cc
index e612178639..f24f82709d 100644
--- a/source/grid/grid_refinement.cc
+++ b/source/grid/grid_refinement.cc
@@ -71,7 +71,8 @@ GridRefinement::refine(Triangulation<dim, spacedim> &tria,
 
   unsigned int marked = 0;
   for (const auto &cell : tria.active_cell_iterators())
-    if (std::fabs(criteria(cell->active_cell_index())) >= new_threshold)
+    if (cell->is_locally_owned() &&
+        std::fabs(criteria(cell->active_cell_index())) >= new_threshold)
       {
         if (max_to_mark != numbers::invalid_unsigned_int &&
             marked >= max_to_mark)
@@ -94,7 +95,8 @@ GridRefinement::coarsen(Triangulation<dim, spacedim> &tria,
   Assert(criteria.is_non_negative(), ExcNegativeCriteria());
 
   for (const auto &cell : tria.active_cell_iterators())
-    if (std::fabs(criteria(cell->active_cell_index())) <= threshold)
+    if (cell->is_locally_owned() &&
+        std::fabs(criteria(cell->active_cell_index())) <= threshold)
       if (!cell->refine_flag_set())
         cell->set_coarsen_flag();
 }