Defines various Conjugate Gradient methods.

Data Types
type	cg_t
	CPU implementation of the preconditioned conjugate gradient method. More...

Functions/Subroutines
subroutine	cg_init (this, n, max_iter, m, rel_tol, abs_tol, monitor)
	Initialise a CPU PCG solver.

subroutine	cg_free (this)
	Free a CPU PCG solver.

type(ksp_monitor_t) function	cg_solve (this, ax, x, f, n, coef, bc_projector, gs_h, niter)
	Solve a linear system with the standard PCG method.

subroutine	second_cg_part (rtr, r, mult, w, alpha, n)

type(ksp_monitor_t) function, dimension(3)	cg_solve_coupled (this, ax, x, y, z, fx, fy, fz, n, coef, bc_projector, gs_h, niter)
	Solve three independent systems with the standard PCG method.

Function/Subroutine Documentation

◆ cg_free()

subroutine cg::cg_free ( class(cg_t), intent(inout) this )

private

Definition at line 120 of file cg.f90.

subroutine cg::cg_init	(	class(cg_t), intent(inout), target	this,
		integer, intent(in)	n,
		integer, intent(in)	max_iter,
		class(pc_t), intent(in), optional, target	m,
		real(kind=rp), intent(in), optional	rel_tol,
		real(kind=rp), intent(in), optional	abs_tol,
		logical, intent(in), optional	monitor
	)

Definition at line 85 of file cg.f90.

type(ksp_monitor_t) function cg::cg_solve	(	class(cg_t), intent(inout)	this,
		class(ax_t), intent(in)	ax,
		type(field_t), intent(inout)	x,
		real(kind=rp), dimension(n), intent(in)	f,
		integer, intent(in)	n,
		type(coef_t), intent(inout)	coef,
		class(scalar_bc_projector_t), intent(inout)	bc_projector,
		type(gs_t), intent(inout)	gs_h,
		integer, intent(in), optional	niter
	)

private

Definition at line 136 of file cg.f90.

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type(ksp_monitor_t) function, dimension(3) cg::cg_solve_coupled	(	class(cg_t), intent(inout)	this,
		class(ax_t), intent(in)	ax,
		type(field_t), intent(inout)	x,
		type(field_t), intent(inout)	y,
		type(field_t), intent(inout)	z,
		real(kind=rp), dimension(n), intent(in)	fx,
		real(kind=rp), dimension(n), intent(in)	fy,
		real(kind=rp), dimension(n), intent(in)	fz,
		integer, intent(in)	n,
		type(coef_t), intent(inout)	coef,
		class(vector_bc_projector_t), intent(inout)	bc_projector,
		type(gs_t), intent(inout)	gs_h,
		integer, intent(in), optional	niter
	)

private

Definition at line 291 of file cg.f90.

subroutine cg::second_cg_part	(	real(kind=rp), intent(inout)	rtr,
		real(kind=rp), dimension(n), intent(inout)	r,
		real(kind=rp), dimension(n), intent(in)	mult,
		real(kind=rp), dimension(n), intent(in)	w,
		real(kind=rp), intent(in)	alpha,
		integer, intent(in)	n
	)

private

Definition at line 270 of file cg.f90.

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integer, parameter cg::cg_p_space = 7

private

Definition at line 54 of file cg.f90.