Describes the distribution of a distributable linear algebra type object. Typically this is a container (such as a DoubleVector) or an operator (e.g Preconditioner or LinearSolver). This object is used in both serial and parallel implementations. In the serial context (no MPI) this just contains an integer indicating the number of rows. In parallel either each processor holds a subset of the set of global rows. (each processor contains only a single continuous block of rows - parametised with variables denoting the first row and the number of local rows) or, all rows are be duplicated across all processors. In parallel this object also contains an OomphCommunicator object which primarily contains the MPI_Comm communicator associated with this object. More...
#include <linear_algebra_distribution.h>
Public Member Functions | |
| LinearAlgebraDistribution () | |
| Default Constructor - creates a Distribution that has not been setup. More... | |
| LinearAlgebraDistribution (const OomphCommunicator &comm, const unsigned &first_row_, const unsigned &n_row_local, const unsigned &n_row=0) | |
| Constructor. Takes the first_row, nrow_local (both for this processor) and nrow as arguments. If nrow is not provided or equal to 0 then it will be computed automatically. More... | |
| LinearAlgebraDistribution (const OomphCommunicator &comm, const unsigned &n_row, const bool &distributed_=true) | |
| Constructor. Takes the number of global rows and uniformly distributes them over the processors if distributed = true (default), if distributed = false then every row is duplicated on every processor. More... | |
| LinearAlgebraDistribution (const OomphCommunicator *const comm_pt, const unsigned &first_row_, const unsigned &n_row_local, const unsigned &n_row=0) | |
| Constructor. Takes the first_row, nrow_local (both for this processor) and nrow as arguments. If nrow is not provided or equal to 0 then it will be computed automatically. More... | |
| LinearAlgebraDistribution (const OomphCommunicator *const comm_pt, const unsigned &n_row, const bool &distributed_=true) | |
| Constructor. Takes the number of global rows and uniformly distributes them over the processors if distributed = true (default), if distributed = false then every row is duplicated on every processor. More... | |
| LinearAlgebraDistribution (const LinearAlgebraDistribution &old_dist) | |
| Copy Constructor. More... | |
| LinearAlgebraDistribution (const LinearAlgebraDistribution *old_dist_pt) | |
| pointer based copy constructor More... | |
| ~LinearAlgebraDistribution () | |
| Destructor. More... | |
| void | operator= (const LinearAlgebraDistribution &old_dist) |
| Assignment Operator. More... | |
| void | build (const OomphCommunicator *const comm_pt, const unsigned &first_row, const unsigned &nrow_local, const unsigned &nrow=0) |
| Sets the distribution. Takes first_row, nrow_local and nrow as arguments. If nrow is not provided or equal to 0 then it is computed automatically. More... | |
| void | build (const OomphCommunicator *const comm_pt, const unsigned &nrow, const bool &distributed=true) |
| Build the LinearAlgebraDistribution. if distributed = true (default) then uniformly distribute nrow over all processors where processors 0 holds approximately the first nrow/n_proc, processor 1 holds the next nrow/n_proc and so on... or if distributed = false then every row is held on every processor. More... | |
| void | build (const LinearAlgebraDistribution &new_dist) |
| Copy the argument distribution. Also a helper method for the =assignment operator and copy constructor. More... | |
| void | build (const LinearAlgebraDistribution *new_dist_pt) |
| Copy the argument distribution. Also a helper method for the =assignment operator and copy constructor. More... | |
| void | clear () |
| clears the distribution More... | |
| unsigned | nrow () const |
| access function to the number of global rows. More... | |
| unsigned | nrow_local () const |
| access function for the num of local rows on this processor. If no MPI then Nrow is returned. More... | |
| unsigned | nrow_local (const unsigned &p) const |
| access function for the num of local rows on this processor. If no MPI the nrow is returned More... | |
| unsigned | first_row () const |
| access function for the first row on this processor. If not distributed then this is just zero. More... | |
| unsigned | first_row (const unsigned &p) const |
| access function for the first row on the p-th processor More... | |
| bool | distributed () const |
| access function to the distributed - indicates whether the distribution is serial or distributed More... | |
| OomphCommunicator * | communicator_pt () const |
| const access to the communicator pointer More... | |
| bool | built () const |
| if the communicator_pt is null then the distribution is not setup then false is returned, otherwise return true More... | |
| bool | operator== (const LinearAlgebraDistribution &other_dist) const |
| == Operator More... | |
| bool | operator!= (const LinearAlgebraDistribution &other_dist) const |
| != operator More... | |
| unsigned | global_to_local_row_map (const unsigned &global_i) const |
| return the local index corresponding to the global index More... | |
| unsigned | rank_of_global_row (const unsigned i) const |
| return the processor rank of the global row number i More... | |
| Vector< unsigned > | nrow_local_vector () const |
| return the nrow_local Vector More... | |
| Vector< unsigned > | first_row_vector () const |
| return the first_row Vector More... | |
Private Attributes | |
| unsigned | Nrow |
| the number of global rows More... | |
| Vector< unsigned > | Nrow_local |
| the number of local rows on the processor More... | |
| Vector< unsigned > | First_row |
| the first row on this processor More... | |
| bool | Distributed |
| flag to indicate whether this distribution describes an object that is distributed over the processors of Comm_pt (true) or duplicated over the processors of Comm_pt (false) More... | |
| OomphCommunicator * | Comm_pt |
| the pointer to the MPI communicator object in this distribution More... | |
Friends | |
| std::ostream & | operator<< (std::ostream &stream, LinearAlgebraDistribution &dist) |
| << operator More... | |
Describes the distribution of a distributable linear algebra type object. Typically this is a container (such as a DoubleVector) or an operator (e.g Preconditioner or LinearSolver). This object is used in both serial and parallel implementations. In the serial context (no MPI) this just contains an integer indicating the number of rows. In parallel either each processor holds a subset of the set of global rows. (each processor contains only a single continuous block of rows - parametised with variables denoting the first row and the number of local rows) or, all rows are be duplicated across all processors. In parallel this object also contains an OomphCommunicator object which primarily contains the MPI_Comm communicator associated with this object.
Definition at line 63 of file linear_algebra_distribution.h.
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Default Constructor - creates a Distribution that has not been setup.
Definition at line 68 of file linear_algebra_distribution.h.
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Constructor. Takes the first_row, nrow_local (both for this processor) and nrow as arguments. If nrow is not provided or equal to 0 then it will be computed automatically.
Definition at line 73 of file linear_algebra_distribution.h.
References build().
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Constructor. Takes the number of global rows and uniformly distributes them over the processors if distributed = true (default), if distributed = false then every row is duplicated on every processor.
Definition at line 85 of file linear_algebra_distribution.h.
References build().
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Constructor. Takes the first_row, nrow_local (both for this processor) and nrow as arguments. If nrow is not provided or equal to 0 then it will be computed automatically.
Definition at line 96 of file linear_algebra_distribution.h.
References build().
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Constructor. Takes the number of global rows and uniformly distributes them over the processors if distributed = true (default), if distributed = false then every row is duplicated on every processor.
Definition at line 108 of file linear_algebra_distribution.h.
References build().
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pointer based copy constructor
Definition at line 124 of file linear_algebra_distribution.h.
References build().
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| void oomph::LinearAlgebraDistribution::build | ( | const LinearAlgebraDistribution & | new_dist | ) |
Copy the argument distribution. Also a helper method for the =assignment operator and copy constructor.
helper method for the =assignment operator and copy constructor
Definition at line 226 of file linear_algebra_distribution.cc.
References Comm_pt, communicator_pt(), distributed(), Distributed, First_row, first_row_vector(), nrow(), Nrow, Nrow_local, and nrow_local_vector().
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Copy the argument distribution. Also a helper method for the =assignment operator and copy constructor.
Definition at line 165 of file linear_algebra_distribution.h.
References build().
| void oomph::LinearAlgebraDistribution::build | ( | const OomphCommunicator *const | comm_pt, |
| const unsigned & | first_row, | ||
| const unsigned & | nrow_local, | ||
| const unsigned & | nrow = 0 |
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| ) |
Sets the distribution. Takes first_row, nrow_local and nrow as arguments. If nrow is not provided or equal to 0 then it is computed automatically.
Sets the distribution. Takes first_row, local_nrow and global_nrow as arguments. If global_nrow is not provided or equal to 0 then it is computed automatically.
Definition at line 35 of file linear_algebra_distribution.cc.
References Comm_pt, Distributed, first_row(), First_row, Nrow, and Nrow_local.
Referenced by oomph::PeriodicOrbitAssemblyHandler< NNODE_1D >::adapt_temporal_mesh(), oomph::Problem::assign_eqn_numbers(), build(), oomph::DistributableLinearAlgebraObject::build_distribution(), oomph::LinearAlgebraDistributionHelpers::concatenate(), oomph::HypreHelpers::create_HYPRE_Matrix(), oomph::FoldHandler::FoldHandler(), oomph::CRDoubleMatrix::get_matrix_transpose(), oomph::HopfHandler::HopfHandler(), LinearAlgebraDistribution(), oomph::SumOfMatrices::multiply(), operator=(), oomph::BlockPitchForkLinearSolver::resolve(), oomph::BlockHopfLinearSolver::solve(), oomph::MumpsSolver::solve(), oomph::FoldHandler::solve_augmented_block_system(), oomph::FoldHandler::solve_block_system(), oomph::HopfHandler::solve_complex_system(), oomph::BlockHopfLinearSolver::solve_for_two_rhs(), oomph::FoldHandler::solve_full_system(), oomph::HopfHandler::solve_full_system(), oomph::HopfHandler::solve_standard_system(), oomph::Problem::synchronise_eqn_numbers(), oomph::FoldHandler::~FoldHandler(), and oomph::HopfHandler::~HopfHandler().
| void oomph::LinearAlgebraDistribution::build | ( | const OomphCommunicator *const | comm_pt, |
| const unsigned & | nrow, | ||
| const bool & | distributed = true |
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| ) |
Build the LinearAlgebraDistribution. if distributed = true (default) then uniformly distribute nrow over all processors where processors 0 holds approximately the first nrow/n_proc, processor 1 holds the next nrow/n_proc and so on... or if distributed = false then every row is held on every processor.
Uniformly distribute global_nrow over all processors where processors 0 holds approximately the first global_nrow/n_proc, processor 1 holds the next global_nrow/n_proc and so on...
Definition at line 176 of file linear_algebra_distribution.cc.
References Comm_pt, Distributed, First_row, Nrow, and Nrow_local.
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if the communicator_pt is null then the distribution is not setup then false is returned, otherwise return true
Definition at line 342 of file linear_algebra_distribution.h.
References Comm_pt.
Referenced by oomph::CRDoubleMatrix::add(), oomph::MumpsSolver::backsub(), oomph::SuperLUSolver::backsub_distributed(), oomph::DoubleVector::build(), oomph::DoubleMultiVector::build(), oomph::CRDoubleMatrixHelpers::concatenate(), oomph::LinearAlgebraDistributionHelpers::concatenate(), oomph::CRDoubleMatrixHelpers::concatenate_without_communication(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_vector(), oomph::DistributableLinearAlgebraObject::distribution_built(), oomph::TrilinosEpetraHelpers::multiply(), oomph::LagrangeEnforcedFlowPreconditioner::preconditioner_solve(), oomph::NavierStokesSchurComplementPreconditioner::preconditioner_solve(), oomph::SpaceTimeNavierStokesSubsidiaryPreconditioner::preconditioner_solve(), oomph::BlockPitchForkLinearSolver::resolve(), oomph::DoubleMultiVector::shallow_build(), oomph::MumpsSolver::solve(), oomph::CG< MATRIX >::solve(), oomph::CG< MATRIX >::solve_helper(), oomph::BiCGStab< MATRIX >::solve_helper(), oomph::GS< MATRIX >::solve_helper(), oomph::GS< CRDoubleMatrix >::solve_helper(), and oomph::DampedJacobi< MATRIX >::solve_helper().
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clears the distribution
Definition at line 171 of file linear_algebra_distribution.h.
References Comm_pt, First_row, Nrow, and Nrow_local.
Referenced by oomph::DistributableLinearAlgebraObject::clear_distribution(), oomph::DoubleVectorHelpers::concatenate_without_communication(), oomph::MGSolver< DIM >::setup_mg_structures(), and oomph::DoubleVectorHelpers::split_without_communication().
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const access to the communicator pointer
Definition at line 335 of file linear_algebra_distribution.h.
References Comm_pt.
Referenced by build(), oomph::Problem::calculate_continuation_derivatives_fd_helper(), oomph::Problem::calculate_continuation_derivatives_helper(), oomph::CRDoubleMatrixHelpers::concatenate(), oomph::DoubleVectorHelpers::concatenate(), oomph::DoubleVectorHelpers::concatenate_without_communication(), oomph::CRDoubleMatrixHelpers::concatenate_without_communication(), oomph::TrilinosEpetraHelpers::copy_to_oomphlib_vector(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix_for_aztecoo(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_vector(), oomph::TrilinosEpetraHelpers::create_epetra_map(), oomph::HypreHelpers::create_HYPRE_Matrix(), oomph::HypreHelpers::create_HYPRE_Vector(), oomph::DoubleVectorHaloScheme::DoubleVectorHaloScheme(), oomph::SuperLUSolver::factorise(), oomph::MumpsSolver::factorise(), oomph::SuperLUSolver::factorise_distributed(), oomph::Problem::get_jacobian(), oomph::CRDoubleMatrix::global_matrix(), oomph::HypreInterface::hypre_matrix_setup(), oomph::HypreInterface::hypre_solver_setup(), oomph::BlockPreconditioner< MATRIX >::internal_get_block(), oomph::MGSolver< DIM >::interpolation_matrix_set(), oomph::HelmholtzMGPreconditioner< DIM >::interpolation_matrix_set(), oomph::TrilinosEpetraHelpers::multiply(), oomph::DenseDoubleMatrix::multiply(), oomph::CCDoubleMatrix::multiply(), oomph::CRDoubleMatrix::multiply_transpose(), oomph::DenseDoubleMatrix::multiply_transpose(), oomph::CCDoubleMatrix::multiply_transpose(), Anasazi::MultiVecTraits< double, oomph::DoubleMultiVector >::MvTransMv(), oomph::Problem::newton_solve_continuation(), operator==(), oomph::DoubleMultiVector::output(), oomph::DoubleVector::output(), oomph::DoubleMultiVector::redistribute(), oomph::DoubleVector::redistribute(), oomph::CRDoubleMatrix::redistribute(), oomph::MGSolver< DIM >::self_test(), oomph::MatrixVectorProduct::setup(), oomph::Preconditioner::setup(), oomph::MGSolver< DIM >::setup_mg_structures(), oomph::HelmholtzMGPreconditioner< DIM >::setup_mg_structures(), oomph::MGSolver< DIM >::setup_smoothers(), oomph::HelmholtzMGPreconditioner< DIM >::setup_smoothers(), oomph::DenseLU::solve(), oomph::TrilinosAztecOOSolver::solve(), oomph::MumpsSolver::solve(), oomph::AugmentedProblemGMRES::solve_helper(), oomph::DoubleVectorHelpers::split(), and oomph::DoubleVectorHelpers::split_without_communication().
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access function to the distributed - indicates whether the distribution is serial or distributed
Definition at line 329 of file linear_algebra_distribution.h.
References Distributed.
Referenced by oomph::SuperLUSolver::backsub_serial(), oomph::SuperLUSolver::backsub_transpose_serial(), build(), oomph::Problem::calculate_continuation_derivatives_fd_helper(), oomph::Problem::calculate_continuation_derivatives_helper(), oomph::Smoother::check_validity_of_solve_helper_inputs(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_vector(), oomph::TrilinosEpetraHelpers::create_epetra_map(), oomph::HypreHelpers::create_HYPRE_Matrix(), oomph::HypreHelpers::create_HYPRE_Vector(), oomph::DistributableLinearAlgebraObject::distributed(), oomph::DoubleVectorHaloScheme::DoubleVectorHaloScheme(), oomph::Problem::get_eigenproblem_matrices(), oomph::Problem::get_jacobian(), oomph::BlockPreconditioner< MATRIX >::internal_get_block(), oomph::Problem::newton_solve_continuation(), operator==(), oomph::DoubleMultiVector::redistribute(), oomph::DoubleVector::redistribute(), oomph::CRDoubleMatrix::redistribute(), oomph::MatrixVectorProduct::setup(), oomph::DenseLU::solve(), oomph::SuperLUSolver::solve(), oomph::MumpsSolver::solve(), oomph::CG< MATRIX >::solve_helper(), oomph::BiCGStab< MATRIX >::solve_helper(), oomph::GMRES< MATRIX >::solve_helper(), oomph::AugmentedProblemGMRES::solve_helper(), oomph::HelmholtzGMRESMG< MATRIX >::solve_helper(), oomph::HelmholtzFGMRESMG< MATRIX >::solve_helper(), and oomph::SuperLUSolver::solve_transpose().
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access function for the first row on this processor. If not distributed then this is just zero.
Definition at line 261 of file linear_algebra_distribution.h.
References Comm_pt, Distributed, and First_row.
Referenced by oomph::NavierStokesSchurComplementPreconditioner::assemble_inv_press_and_veloc_mass_matrix_diagonal(), oomph::PressureBasedSolidLSCPreconditioner::assemble_mass_matrix_diagonal(), build(), oomph::CRDoubleMatrixHelpers::concatenate(), oomph::DoubleVectorHelpers::concatenate(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix_for_aztecoo(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_vector(), oomph::TrilinosEpetraHelpers::create_epetra_map(), oomph::HypreHelpers::create_HYPRE_Matrix(), oomph::HypreHelpers::create_HYPRE_Vector(), oomph::DoubleVectorHaloScheme::DoubleVectorHaloScheme(), oomph::DistributableLinearAlgebraObject::first_row(), oomph::Problem::global_dof_pt(), oomph::HypreInterface::hypre_solve(), oomph::BlockPreconditioner< MATRIX >::index_in_block(), oomph::BlockPreconditioner< MATRIX >::internal_dof_number(), oomph::BlockPreconditioner< MATRIX >::internal_index_in_dof(), operator==(), oomph::Problem::parallel_sparse_assemble(), oomph::PitchForkHandler::PitchForkHandler(), rank_of_global_row(), oomph::DoubleMultiVector::redistribute(), oomph::DoubleVector::redistribute(), oomph::CRDoubleMatrix::redistribute(), and oomph::CRDoubleMatrix::sparse_indexed_output_with_offset().
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access function for the first row on the p-th processor
Definition at line 289 of file linear_algebra_distribution.h.
References Comm_pt, Distributed, and First_row.
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return the first_row Vector
Definition at line 404 of file linear_algebra_distribution.h.
References First_row.
Referenced by build().
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return the local index corresponding to the global index
Definition at line 365 of file linear_algebra_distribution.h.
References Nrow, and nrow_local().
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access function to the number of global rows.
Definition at line 186 of file linear_algebra_distribution.h.
References Nrow.
Referenced by oomph::AugmentedProblemGMRES::apply_schur_complement_preconditioner(), oomph::NavierStokesSchurComplementPreconditioner::assemble_inv_press_and_veloc_mass_matrix_diagonal(), oomph::PressureBasedSolidLSCPreconditioner::assemble_mass_matrix_diagonal(), oomph::MumpsSolver::backsub(), oomph::SuperLUSolver::backsub_distributed(), build(), oomph::SuperLUSolver::clean_up_memory(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_vector(), oomph::TrilinosEpetraHelpers::create_epetra_map(), oomph::SuperLUSolver::factorise_distributed(), oomph::BlockPreconditioner< MATRIX >::get_concatenated_block(), oomph::Problem::get_eigenproblem_matrices(), oomph::Problem::get_jacobian(), oomph::Problem::get_residuals(), oomph::CRDoubleMatrix::multiply(), oomph::CRDoubleMatrix::multiply_transpose(), oomph::Problem::ndof(), oomph::DistributableLinearAlgebraObject::nrow(), operator==(), oomph::DoubleMultiVector::redistribute(), oomph::DoubleVector::redistribute(), oomph::CRDoubleMatrix::redistribute(), oomph::BlockPreconditioner< MATRIX >::set_replacement_dof_block(), and oomph::Problem::synchronise_eqn_numbers().
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access function for the num of local rows on this processor. If no MPI then Nrow is returned.
Definition at line 193 of file linear_algebra_distribution.h.
References Comm_pt, Distributed, Nrow, and Nrow_local.
Referenced by oomph::Problem::adapt(), oomph::Problem::adaptive_unsteady_newton_solve(), oomph::OomphLibPreconditionerEpetraOperator::ApplyInverse(), oomph::Problem::arc_length_step_solve_helper(), oomph::NavierStokesSchurComplementPreconditioner::assemble_inv_press_and_veloc_mass_matrix_diagonal(), oomph::PressureBasedSolidLSCPreconditioner::assemble_mass_matrix_diagonal(), oomph::Problem::calculate_continuation_derivatives_fd_helper(), oomph::Problem::calculate_continuation_derivatives_helper(), oomph::CRDoubleMatrixHelpers::concatenate(), oomph::CRDoubleMatrixHelpers::concatenate_without_communication(), oomph::CRDoubleMatrix::CRDoubleMatrix(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix(), oomph::TrilinosEpetraHelpers::create_distributed_epetra_matrix_for_aztecoo(), oomph::TrilinosEpetraHelpers::create_epetra_map(), oomph::HypreHelpers::create_HYPRE_Matrix(), oomph::HypreHelpers::create_HYPRE_Vector(), oomph::Problem::create_new_linear_algebra_distribution(), oomph::Problem::get_hessian_vector_products(), oomph::Problem::global_dof_pt(), global_to_local_row_map(), oomph::HypreInterface::hypre_solve(), oomph::BlockPreconditioner< MATRIX >::index_in_block(), oomph::BlockPreconditioner< MATRIX >::internal_dof_number(), oomph::BlockPreconditioner< MATRIX >::internal_index_in_dof(), oomph::Problem::newton_solve(), oomph::Problem::newton_solve_continuation(), oomph::DistributableLinearAlgebraObject::nrow_local(), operator==(), oomph::Problem::parallel_sparse_assemble(), oomph::PitchForkHandler::PitchForkHandler(), rank_of_global_row(), oomph::DoubleMultiVector::redistribute(), oomph::DoubleVector::redistribute(), oomph::CRDoubleMatrix::redistribute(), oomph::BlockPitchForkLinearSolver::resolve(), oomph::Problem::restore_dof_values(), oomph::BlockPitchForkLinearSolver::solve(), oomph::PitchForkHandler::solve_block_system(), oomph::PitchForkHandler::solve_full_system(), oomph::Problem::store_current_dof_values(), and oomph::PitchForkHandler::~PitchForkHandler().
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access function for the num of local rows on this processor. If no MPI the nrow is returned
Definition at line 222 of file linear_algebra_distribution.h.
References Comm_pt, Distributed, Nrow, and Nrow_local.
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return the nrow_local Vector
Definition at line 398 of file linear_algebra_distribution.h.
References Nrow_local.
Referenced by build().
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!= operator
Definition at line 355 of file linear_algebra_distribution.h.
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Assignment Operator.
Definition at line 137 of file linear_algebra_distribution.h.
References build().
| bool oomph::LinearAlgebraDistribution::operator== | ( | const LinearAlgebraDistribution & | other_dist | ) | const |
== Operator
operator==
Definition at line 268 of file linear_algebra_distribution.cc.
References Comm_pt, communicator_pt(), distributed(), Distributed, first_row(), First_row, i, nrow(), Nrow, nrow_local(), and Nrow_local.
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return the processor rank of the global row number i
Definition at line 387 of file linear_algebra_distribution.h.
References first_row(), i, and nrow_local().
Referenced by oomph::CRDoubleMatrixHelpers::concatenate(), oomph::DoubleVectorHelpers::concatenate(), oomph::DoubleVectorHaloScheme::DoubleVectorHaloScheme(), oomph::BlockPreconditioner< MATRIX >::index_in_block(), and oomph::Problem::parallel_sparse_assemble().
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<< operator
Definition at line 318 of file linear_algebra_distribution.cc.
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the pointer to the MPI communicator object in this distribution
Definition at line 425 of file linear_algebra_distribution.h.
Referenced by build(), built(), clear(), communicator_pt(), first_row(), nrow_local(), operator==(), and ~LinearAlgebraDistribution().
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flag to indicate whether this distribution describes an object that is distributed over the processors of Comm_pt (true) or duplicated over the processors of Comm_pt (false)
Definition at line 422 of file linear_algebra_distribution.h.
Referenced by build(), distributed(), first_row(), nrow_local(), and operator==().
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the first row on this processor
Definition at line 417 of file linear_algebra_distribution.h.
Referenced by build(), clear(), first_row(), first_row_vector(), and operator==().
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the number of global rows
Definition at line 411 of file linear_algebra_distribution.h.
Referenced by build(), clear(), global_to_local_row_map(), nrow(), nrow_local(), and operator==().
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the number of local rows on the processor
Definition at line 414 of file linear_algebra_distribution.h.
Referenced by build(), clear(), nrow_local(), nrow_local_vector(), and operator==().