Reference documentation for deal.II version 9.2.0
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petsc_parallel_block_vector.cc
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2 //
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4 //
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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
PETScWrappers::MPI::BlockVector::reinit
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)
Definition: petsc_block_vector.h:366
PETScWrappers
Definition: petsc_block_sparse_matrix.h:36
BlockVectorBase< Vector >::collect_sizes
void collect_sizes()
BlockVectorBase< Vector >::components
std::vector< Vector > components
Definition: block_vector_base.h:956
types::global_dof_index
unsigned int global_dof_index
Definition: types.h:76
DEAL_II_NAMESPACE_OPEN
#define DEAL_II_NAMESPACE_OPEN
Definition: config.h:358
BlockVectorBase< Vector >::n_blocks
unsigned int n_blocks() const
petsc_block_vector.h
BlockVectorBase< Vector >::block_indices
BlockIndices block_indices
Definition: block_vector_base.h:962
unsigned int
BlockIndices::reinit
void reinit(const unsigned int n_blocks, const size_type n_elements_per_block)
Definition: block_indices.h:260
DEAL_II_NAMESPACE_CLOSE
#define DEAL_II_NAMESPACE_CLOSE
Definition: config.h:359