RobustCoarseMtx_mod Module Reference

Method for creating robust coarse spaces. More...

Data Types
type	SumOfInversedSubMtx
	This represents matrix consisting of the sum of smaller inversed matrices. More...
Functions/Subroutines
type(SumOfInversedSubMtx)	CoarseProjectionMtxsBuild (A, R, naggr)
	Creates restrict matrices for the Robust Coarse Space algorithm from the restrict matrix of the aggregation and smoothing result.
subroutine	SOISMtx_pmvm (y, A, x)
	Matrix-vector multiplication.
subroutine	RobustRestrictMtxBuild (A, g, R)
	Get robust restrict matrix.

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Detailed Description

Method for creating robust coarse spaces.

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Function/Subroutine Documentation

type(SumOfInversedSubMtx) RobustCoarseMtx_mod::CoarseProjectionMtxsBuild	(	type(SpMtx),intent(inout)	A,
		type(SpMtx),intent(in)	R,
		integer,intent(in)	naggr
	)

Creates restrict matrices for the Robust Coarse Space algorithm from the restrict matrix of the aggregation and smoothing result.

Parameters:

R	restrict matrix from usual aggregate with smoothing
naggr	number of aggregates

Definition at line 53 of file RobustCoarseMtx.f90.

References getConstrainedEnergyMatrix().

Referenced by CoarsePreconditioner_robust_mod::CoarsePreconditioner_robust_Init().

subroutine RobustCoarseMtx_mod::RobustRestrictMtxBuild	(	type(SumOfInversedSubMtx),intent(inout)	A,
		real(kind=rk),dimension(:),pointer	g,
		type(SpMtx),intent(out)	R
	)

Get robust restrict matrix.

Parameters:

A	system matrix
g	solution of the equation $ B g = 1 $
R	restriction matrix

Definition at line 176 of file RobustCoarseMtx.f90.

References subsolvers::sparse_singlesolve(), SpMtx_op_Ax::SpMtx_Ax(), SpMtx_class::SpMtx_newInit(), and SpMtx_util::SpMtx_printRaw().

Referenced by CoarsePreconditioner_robust_mod::CoarsePreconditioner_robust_Init().

subroutine RobustCoarseMtx_mod::SOISMtx_pmvm	(	real(kind=rk),dimension(:),pointer	y,
		type(SumOfInversedSubMtx),intent(inout)	A,
		real(kind=rk),dimension(:),pointer	x
	)

Matrix-vector multiplication.

Parameters:

y	Result
A	System matrix
x	Vector

Definition at line 141 of file RobustCoarseMtx.f90.

References not, subsolvers::sparse_singlesolve(), and SpMtx_op_Ax::SpMtx_Ax().

Referenced by pcgRobust_mod::pcg_forRCS().