Line data    Source code

       1             : // The libMesh Finite Element Library.
       2             : // Copyright (C) 2002-2025 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             : 
      20             : // Local Includes
      21             : #include "libmesh/mapped_subdomain_partitioner.h"
      22             : #include "libmesh/elem.h"
      23             : #include "libmesh/enum_partitioner_type.h"
      24             : #include "libmesh/libmesh_logging.h"
      25             : #include "libmesh/mesh_base.h"
      26             : #include "libmesh/utility.h"
      27             : 
      28             : namespace libMesh
      29             : {
      30             : 
      31             : 
      32           0 : PartitionerType MappedSubdomainPartitioner::type() const
      33             : {
      34           0 :   return MAPPED_SUBDOMAIN_PARTITIONER;
      35             : }
      36             : 
      37             : 
      38          69 : void MappedSubdomainPartitioner::partition_range(MeshBase & /*mesh*/,
      39             :                                                  MeshBase::element_iterator it,
      40             :                                                  MeshBase::element_iterator end,
      41             :                                                  const unsigned int n)
      42             : {
      43           2 :   libmesh_assert_greater (n, 0);
      44             : 
      45             :   // Check for an easy return.  If the user has not specified any
      46             :   // entries in subdomain_to_proc, we just do a single partitioning.
      47          69 :   if ((n == 1) || subdomain_to_proc.empty())
      48             :     {
      49           0 :       this->single_partition_range (it, end);
      50           0 :       return;
      51             :     }
      52             : 
      53             :   // Now actually do the partitioning.
      54           4 :   LOG_SCOPE ("partition_range()", "MappedSubdomainPartitioner");
      55             : 
      56       69136 :   for (auto & elem : as_range(it, end))
      57             :     {
      58       69000 :       subdomain_id_type sbd_id = elem->subdomain_id();
      59             : 
      60             :       // Find which processor id corresponds to this element's subdomain id.
      61       69000 :       elem->processor_id() = libmesh_map_find(subdomain_to_proc, sbd_id);
      62          65 :     }
      63             : }
      64             : 
      65             : 
      66             : 
      67          69 : void MappedSubdomainPartitioner::_do_partition (MeshBase & mesh,
      68             :                                                 const unsigned int n)
      69             : {
      70          69 :   this->partition_range(mesh,
      71         138 :                         mesh.active_elements_begin(),
      72          71 :                         mesh.active_elements_end(),
      73           4 :                         n);
      74          69 : }
      75             : 
      76             : } // namespace libMesh