libMesh
mesh_serializer.C
Go to the documentation of this file.
1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2017 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
3 
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License, or (at your option) any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
13 
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 
18 
19 // Local includes
20 #include "libmesh/mesh_serializer.h"
21 #include "libmesh/mesh_base.h"
22 #include "libmesh/parallel.h" // parallel_only() macro
23 
24 namespace libMesh
25 {
26 
27 MeshSerializer::MeshSerializer(MeshBase & mesh, bool need_serial, bool serial_only_needed_on_proc_0) :
28  _mesh(mesh),
29  reparallelize(false)
30 {
31  libmesh_parallel_only(mesh.comm());
32  if (need_serial && !_mesh.is_serial() && !serial_only_needed_on_proc_0) {
33  reparallelize = true;
34  _mesh.allgather();
35  }
36  else if (need_serial && !_mesh.is_serial() && serial_only_needed_on_proc_0) {
37  // Note: NOT reparallelizing on purpose.
38  // Just waste a bit of space on processor 0 to speed things up
40  }
41 }
42 
43 
44 
46 {
47  if (reparallelize)
49 }
50 
51 } // namespace libMesh
virtual bool is_serial() const
Definition: mesh_base.h:140
virtual void allgather()
Gathers all elements and nodes of the mesh onto every processor.
Definition: mesh_base.h:169
MeshBase & mesh
virtual void gather_to_zero()
Gathers all elements and nodes of the mesh onto processor zero.
Definition: mesh_base.h:175
The libMesh namespace provides an interface to certain functionality in the library.
This is the MeshBase class.
Definition: mesh_base.h:68
const Parallel::Communicator & comm() const
MeshSerializer(MeshBase &mesh, bool need_serial=true, bool serial_only_needed_on_proc_0=false)
virtual void delete_remote_elements()
When supported, deletes all nonlocal elements of the mesh except for "ghosts" which touch a local ele...
Definition: mesh_base.h:182