sll_m_preconditioner_poisson_fft Module Reference

Description

This module is a wrapper around the spline FEM Poisson solver for the uniform grid with periodic boundary condtions inverted with FFTs The wrapper as a type sll_t_linear_solver_abstract allows for the use of the solver as a preconditioner to a linear solver.

Author

Katharina Kormann

Derived types and interfaces
type	sll_t_preconditioner_poisson_fft

Functions/Subroutines
subroutine	create_poisson_fft (self, n_dofs, degree, delta_x, jacobi_in)
subroutine	free_poisson_fft (self)
subroutine	solve_poisson_fft (self, rhs, unknown)
subroutine	read_from_file_poisson_fft (self, filename)
subroutine	set_verbose_poisson_fft (self, verbose)
subroutine	print_info_poisson_fft (self)

Function/Subroutine Documentation

create_poisson_fft()

subroutine sll_m_preconditioner_poisson_fft::create_poisson_fft ( class(sll_t_preconditioner_poisson_fft), intent(inout)  self, integer(kind=i32), dimension(3), intent(in)  n_dofs, integer(kind=i32), dimension(3), intent(in)  degree, real(kind=f64), dimension(3), intent(in)  delta_x, real(kind=f64), dimension(:), intent(in)  jacobi_in  )

private

Parameters

[in,out]	self	preconditioner
[in]	n_dofs	No. of degrees of freedom in each direction
[in]	degree	spline degree in each direction
[in]	delta_x	grid size in each direction

Definition at line 47 of file sll_m_preconditioner_poisson_fft.F90.

free_poisson_fft()

subroutine sll_m_preconditioner_poisson_fft::free_poisson_fft ( class(sll_t_preconditioner_poisson_fft), intent(inout)  self )

private

Parameters

[in,out]

self

preconditioner

Definition at line 62 of file sll_m_preconditioner_poisson_fft.F90.

print_info_poisson_fft()

subroutine sll_m_preconditioner_poisson_fft::print_info_poisson_fft ( class(sll_t_preconditioner_poisson_fft), intent(in)  self )

private

Parameters

[in]

self

preconditioner

Definition at line 98 of file sll_m_preconditioner_poisson_fft.F90.

read_from_file_poisson_fft()

subroutine sll_m_preconditioner_poisson_fft::read_from_file_poisson_fft ( class(sll_t_preconditioner_poisson_fft), intent(inout)  self, character(len=*), intent(in)  filename  )

private

Parameters

[in,out]

self

preconditioner

Definition at line 85 of file sll_m_preconditioner_poisson_fft.F90.

set_verbose_poisson_fft()

subroutine sll_m_preconditioner_poisson_fft::set_verbose_poisson_fft ( class(sll_t_preconditioner_poisson_fft), intent(inout)  self, logical, intent(in)  verbose  )

private

Parameters

[in,out]	self	preconditioner
[in]	verbose	logical for solver information

Definition at line 91 of file sll_m_preconditioner_poisson_fft.F90.

solve_poisson_fft()

subroutine sll_m_preconditioner_poisson_fft::solve_poisson_fft ( class(sll_t_preconditioner_poisson_fft), intent(inout)  self, real(kind=f64), dimension(:), intent(in)  rhs, real(kind=f64), dimension(:), intent(out)  unknown  )

private

Parameters

[in,out]	self	preconditioner
[in]	rhs	right hand side
[out]	unknown	result

Definition at line 69 of file sll_m_preconditioner_poisson_fft.F90.