Neko  0.9.99
A portable framework for high-order spectral element flow simulations
cacg Module Reference

Defines a communication avoiding Conjugate Gradient method.

Data Types

type  cacg_t
 S-step communication avoiding preconditioned conjugate gradient method. More...
 

Functions/Subroutines

subroutine cacg_init (this, n, max_iter, M, s, rel_tol, abs_tol, monitor)
 Initialise a s-step CA PCG solver. More...
 
subroutine cacg_free (this)
 Deallocate a s-step CA PCG solver. More...
 
type(ksp_monitor_t) function cacg_solve (this, Ax, x, f, n, coef, blst, gs_h, niter)
 S-step CA PCG solve. More...
 
subroutine construct_basis_matrix (Tt, s)
 Monomial matrix constuction, not sparse. More...
 
type(ksp_monitor_t) function, dimension(3) cacg_solve_coupled (this, Ax, x, y, z, fx, fy, fz, n, coef, blstx, blsty, blstz, gs_h, niter)
 S-step CA PCG coupled solve. More...
 

Function/Subroutine Documentation

◆ cacg_free()

subroutine cacg::cacg_free ( class(cacg_t), intent(inout)  this)
private

Definition at line 115 of file cacg.f90.

◆ cacg_init()

subroutine cacg::cacg_init ( class(cacg_t), intent(inout)  this,
integer, intent(in)  n,
integer, intent(in)  max_iter,
class(pc_t), intent(in), optional, target  M,
integer, intent(in), optional  s,
real(kind=rp), intent(in), optional  rel_tol,
real(kind=rp), intent(in), optional  abs_tol,
logical, intent(in), optional  monitor 
)

Definition at line 66 of file cacg.f90.

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◆ cacg_solve()

type(ksp_monitor_t) function cacg::cacg_solve ( class(cacg_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,
type(bc_list_t), intent(in)  blst,
type(gs_t), intent(inout)  gs_h,
integer, intent(in), optional  niter 
)
private

Definition at line 138 of file cacg.f90.

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◆ cacg_solve_coupled()

type(ksp_monitor_t) function, dimension(3) cacg::cacg_solve_coupled ( class(cacg_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,
type(bc_list_t), intent(in)  blstx,
type(bc_list_t), intent(in)  blsty,
type(bc_list_t), intent(in)  blstz,
type(gs_t), intent(inout)  gs_h,
integer, intent(in), optional  niter 
)
private

Definition at line 352 of file cacg.f90.

◆ construct_basis_matrix()

subroutine cacg::construct_basis_matrix ( real(kind=rp), dimension(4*s+1,4*s+1), intent(inout)  Tt,
integer, intent(in)  s 
)
private

Definition at line 337 of file cacg.f90.

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