Reference documentation for deal.II version 9.2.0
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petsc_parallel_block_vector.cc
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1 // ---------------------------------------------------------------------
2 //
3 // Copyright (C) 2004 - 2018 by the deal.II authors
4 //
5 // This file is part of the deal.II library.
6 //
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11 // The full text of the license can be found in the file LICENSE.md at
12 // the top level directory of deal.II.
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15 
17 
18 #ifdef DEAL_II_WITH_PETSC
19 
21 
22 namespace PETScWrappers
23 {
24  namespace MPI
25  {
27 
28  void
29  BlockVector::reinit(const unsigned int num_blocks)
30  {
31  std::vector<size_type> block_sizes(num_blocks, 0);
32  this->block_indices.reinit(block_sizes);
33  if (this->components.size() != this->n_blocks())
34  this->components.resize(this->n_blocks());
35 
36  for (unsigned int i = 0; i < this->n_blocks(); ++i)
37  components[i].reinit(MPI_COMM_SELF, 0, 0);
38 
39  collect_sizes();
40  }
41  } // namespace MPI
42 
43 } // namespace PETScWrappers
44 
46 
47 #endif // DEAL_II_WITH_PETSC
void reinit(const unsigned int n_blocks, const MPI_Comm &communicator, const size_type block_size, const size_type local_size, const bool omit_zeroing_entries=false)
void reinit(const unsigned int n_blocks, const size_type n_elements_per_block)
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:359
std::vector< Vector > components
unsigned int global_dof_index
Definition: types.h:76
unsigned int n_blocks() const
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:358