Fact_class Module Reference

Module for factorization of sparse matrices. More...

Data Types
type	Fact
	Fact type General wrapper for sparse different solvers. More...
Functions/Subroutines
type(Fact)	Fact_New (solver_type, nfreds, nnz, indi, indj, val)
	Factorization constructor.
subroutine	Fact_Destroy (fakt)
	Destructor for factorization object.
subroutine	Fact_solve (fakt, rhs, sol)
	Solve sparse system given RHS vector.
Variables
integer, parameter	D_NULLSOLVER = -1
	Solver types.
integer, parameter	D_UMFPACK4 = 1
	UMFPACK v4.
integer, parameter	D_MUMPS = 2
	MUMPS package.

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Detailed Description

Module for factorization of sparse matrices.

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Function/Subroutine Documentation

subroutine Fact_class::Fact_Destroy

(

type(Fact)

fakt

)

Destructor for factorization object.

Parameters:

fakt	factorization object to destroy

Definition at line 224 of file Fact.F90.

References D_MUMPS, D_NULLSOLVER, and D_UMFPACK4.

type(Fact) Fact_class::Fact_New	(	integer,intent(in)	solver_type,
		integer,intent(in)	nfreds,
		integer,intent(in)	nnz,
		integer,dimension(:),intent(inout),target	indi,
		integer,dimension(:),intent(inout),target	indj,
		real(kind=rk),dimension(:),intent(in),target	val
	)

Factorization constructor.

Parameters:

solver_type	what solver to use (D_UMFPACK4, etc)
nfreds	number of freedoms in system (matrix rows, columns)
nnz	number of non-zero elements in matrix
indi	matrix rows indices
indj	matrix column indices
val	matrix element values

Definition at line 64 of file Fact.F90.

References D_MUMPS, D_NULLSOLVER, D_UMFPACK4, DOUG_utils::DOUG_abort(), or(), globals::sctls, and globals::stream.

Referenced by subsolvers::factorise().

subroutine Fact_class::Fact_solve	(	type(Fact)	fakt,
		real(kind=rk),dimension(:),pointer	rhs,
		real(kind=rk),dimension(:),pointer	sol
	)

Solve sparse system given RHS vector.

Parameters:

fakt	factorization object (factorized matrix)
rhs	right-hand side vector
sol	solution vector

Definition at line 246 of file Fact.F90.

References D_MUMPS, D_UMFPACK4, and DOUG_utils::DOUG_abort().

Referenced by subsolvers::Solve_subdomains().

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Variable Documentation

integer,parameter Fact_class::D_MUMPS = 2

MUMPS package.

Definition at line 41 of file Fact.F90.

Referenced by Fact_Destroy(), Fact_New(), and Fact_solve().

integer,parameter Fact_class::D_NULLSOLVER = -1

Solver types.

internal

Definition at line 39 of file Fact.F90.

Referenced by Fact_Destroy(), and Fact_New().

integer,parameter Fact_class::D_UMFPACK4 = 1

UMFPACK v4.

Definition at line 40 of file Fact.F90.

Referenced by Fact_Destroy(), Fact_New(), and Fact_solve().