PCLDUFactorisation::PCLDUFactorisationContext Struct Reference

#include <PCLDUFactorisation.hpp>

Collaboration diagram for PCLDUFactorisation::PCLDUFactorisationContext:

Public Attributes
Mat	A11_matrix_subblock
Mat	A22_matrix_subblock
Mat	B_matrix_subblock
PC	PC_amg_A11
PC	PC_amg_A22
Vec	x1_subvector
Vec	x2_subvector
Vec	y1_subvector
Vec	y2_subvector
Vec	z
Vec	temp
VecScatter	A11_scatter_ctx
VecScatter	A22_scatter_ctx

Detailed Description

This struct defines the state of the preconditioner (initialised data and objects to be reused).

Definition at line 114 of file PCLDUFactorisation.hpp.

Member Data Documentation

A11_matrix_subblock

Mat PCLDUFactorisation::PCLDUFactorisationContext::A11_matrix_subblock

Mat object that stores the A11 subblock.

Definition at line 115 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate(), and PCLDUFactorisation::PCLDUFactorisationSetUp().

A11_scatter_ctx

VecScatter PCLDUFactorisation::PCLDUFactorisationContext::A11_scatter_ctx

Scattering context: gather x1 from x and scatter y1 back into y

Definition at line 126 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

A22_matrix_subblock

Mat PCLDUFactorisation::PCLDUFactorisationContext::A22_matrix_subblock

Mat object that stores the A22 subblock.

Definition at line 116 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate(), and PCLDUFactorisation::PCLDUFactorisationSetUp().

A22_scatter_ctx

VecScatter PCLDUFactorisation::PCLDUFactorisationContext::A22_scatter_ctx

Scattering context: gather x2 from x and scatter y2 back into y

Definition at line 127 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

B_matrix_subblock

Mat PCLDUFactorisation::PCLDUFactorisationContext::B_matrix_subblock

Mat object that stores the B subblock.

Definition at line 117 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

PC_amg_A11

PC PCLDUFactorisation::PCLDUFactorisationContext::PC_amg_A11

inv(A11) is approximated by an AMG cycle. We compute it with HYPRE via a PC object. See

Todo:

• don't create this every iteration but save it first time is needed.

Definition at line 118 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationSetUp().

PC_amg_A22

PC PCLDUFactorisation::PCLDUFactorisationContext::PC_amg_A22

inv(A22) is approximated by an AMG cycle. We compute it with HYPRE via a PC object. See

Todo:

• don't create this every iteration but save it first time is needed.

Definition at line 119 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationSetUp().

temp

Vec PCLDUFactorisation::PCLDUFactorisationContext::temp

Used to store intermediate results

Definition at line 125 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

x1_subvector

Vec PCLDUFactorisation::PCLDUFactorisationContext::x1_subvector

Used to store the first half of the vector to be preconditioned

Definition at line 120 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

x2_subvector

Vec PCLDUFactorisation::PCLDUFactorisationContext::x2_subvector

Used to store the second half of the vector to be preconditioned

Definition at line 121 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

y1_subvector

Vec PCLDUFactorisation::PCLDUFactorisationContext::y1_subvector

Used to store the first half of the preconditioned vector

Definition at line 122 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

y2_subvector

Vec PCLDUFactorisation::PCLDUFactorisationContext::y2_subvector

Used to store the second half of the preconditioned vector

Definition at line 123 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

z

Vec PCLDUFactorisation::PCLDUFactorisationContext::z

Used to store intermediate results

Definition at line 124 of file PCLDUFactorisation.hpp.

Referenced by PCLDUFactorisation::PCLDUFactorisationCreate().

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The documentation for this struct was generated from the following file:

• linalg/src/PCLDUFactorisation.hpp