Merge branch 'main' into pbrubeck/goal-adaptive-solver

Author: pbrubeck

firedrake/mg/netgen.py

@@ -275,6 +275,7 @@ def NetgenHierarchy(mesh, levs, flags, distribution_parameters=None):
     mesh.topology_dm.setRefineLevel(0)
     meshes.append(mesh)
     ngmesh = mesh.netgen_mesh
+    comm = mesh.comm
     for l in range(1, levs+1):
         # Straighten the mesh
         ngmesh.Curve(1)
@@ -302,7 +303,8 @@ def NetgenHierarchy(mesh, levs, flags, distribution_parameters=None):
         mesh = fd.Mesh(rdm, dim=mesh.geometric_dimension,
                        reorder=False,
                        distribution_parameters=parameters,
-                       tolerance=mesh.tolerance)
+                       tolerance=mesh.tolerance,
+                       comm=comm)
         mesh.netgen_mesh = ngmesh
         mesh.netgen_flags = flags