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amg4psblas/amgprec/amg_s_poly_smoother.f90

375 lines
15 KiB
Fortran

!
!
! AMG4PSBLAS version 1.0
! Algebraic Multigrid Package
! based on PSBLAS (Parallel Sparse BLAS version 3.7)
!
! (C) Copyright 2021
!
! Salvatore Filippone
! Pasqua D'Ambra
! Daniela di Serafino
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the AMG4PSBLAS group or the names of its contributors may
! not be used to endorse or promote products derived from this
! software without specific written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! POSSIBILITY OF SUCH DAMAGE.
!
!
!
! File: amg_s_poly_smoother_mod.f90
!
! Module: amg_s_poly_smoother_mod
!
! This module defines:
! the amg_s_poly_smoother_type data structure containing the
! smoother for a Jacobi/block Jacobi smoother.
! The smoother stores in ND the block off-diagonal matrix.
! One special case is treated separately, when the solver is DIAG or L1-DIAG
! then the ND is the entire off-diagonal part of the matrix (including the
! main diagonal block), so that it becomes possible to implement
! a pure Jacobi or L1-Jacobi global solver.
!
module amg_s_poly_smoother
use amg_s_base_smoother_mod
use amg_d_poly_coeff_mod
type, extends(amg_s_base_smoother_type) :: amg_s_poly_smoother_type
! The local solver component is inherited from the
! parent type.
! class(amg_s_base_solver_type), allocatable :: sv
!
integer(psb_ipk_) :: pdegree, variant
integer(psb_ipk_) :: rho_estimate=amg_poly_rho_est_power_
integer(psb_ipk_) :: rho_estimate_iterations=10
type(psb_sspmat_type), pointer :: pa => null()
real(psb_spk_), allocatable :: poly_beta(:)
real(psb_spk_) :: cf_a = szero
real(psb_spk_) :: rho_ba = -sone
contains
procedure, pass(sm) :: apply_v => amg_s_poly_smoother_apply_vect
!!$ procedure, pass(sm) :: apply_a => amg_s_poly_smoother_apply
procedure, pass(sm) :: dump => amg_s_poly_smoother_dmp
procedure, pass(sm) :: build => amg_s_poly_smoother_bld
procedure, pass(sm) :: cnv => amg_s_poly_smoother_cnv
procedure, pass(sm) :: clone => amg_s_poly_smoother_clone
procedure, pass(sm) :: clone_settings => amg_s_poly_smoother_clone_settings
procedure, pass(sm) :: clear_data => amg_s_poly_smoother_clear_data
procedure, pass(sm) :: free => s_poly_smoother_free
procedure, pass(sm) :: cseti => amg_s_poly_smoother_cseti
procedure, pass(sm) :: csetc => amg_s_poly_smoother_csetc
procedure, pass(sm) :: csetr => amg_s_poly_smoother_csetr
procedure, pass(sm) :: descr => amg_s_poly_smoother_descr
procedure, pass(sm) :: sizeof => s_poly_smoother_sizeof
procedure, pass(sm) :: default => s_poly_smoother_default
procedure, pass(sm) :: get_nzeros => s_poly_smoother_get_nzeros
procedure, pass(sm) :: get_wrksz => s_poly_smoother_get_wrksize
procedure, nopass :: get_fmt => s_poly_smoother_get_fmt
procedure, nopass :: get_id => s_poly_smoother_get_id
end type amg_s_poly_smoother_type
private :: s_poly_smoother_free, &
& s_poly_smoother_sizeof, s_poly_smoother_get_nzeros, &
& s_poly_smoother_get_fmt, s_poly_smoother_get_id, &
& s_poly_smoother_get_wrksize
interface
subroutine amg_s_poly_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
& sweeps,work,wv,info,init,initu)
import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
& psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
& psb_ipk_
type(psb_desc_type), intent(in) :: desc_data
class(amg_s_poly_smoother_type), intent(inout) :: sm
type(psb_s_vect_type),intent(inout) :: x
type(psb_s_vect_type),intent(inout) :: y
real(psb_spk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
integer(psb_ipk_), intent(in) :: sweeps
real(psb_spk_),target, intent(inout) :: work(:)
type(psb_s_vect_type),intent(inout) :: wv(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: init
type(psb_s_vect_type),intent(inout), optional :: initu
end subroutine amg_s_poly_smoother_apply_vect
end interface
!!$ interface
!!$ subroutine amg_s_poly_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
!!$ & sweeps,work,info,init,initu)
!!$ import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
!!$ & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, &
!!$ & psb_ipk_
!!$ type(psb_desc_type), intent(in) :: desc_data
!!$ class(amg_s_poly_smoother_type), intent(inout) :: sm
!!$ real(psb_spk_),intent(inout) :: x(:)
!!$ real(psb_spk_),intent(inout) :: y(:)
!!$ real(psb_spk_),intent(in) :: alpha,beta
!!$ character(len=1),intent(in) :: trans
!!$ integer(psb_ipk_), intent(in) :: sweeps
!!$ real(psb_spk_),target, intent(inout) :: work(:)
!!$ integer(psb_ipk_), intent(out) :: info
!!$ character, intent(in), optional :: init
!!$ real(psb_spk_),intent(inout), optional :: initu(:)
!!$ end subroutine amg_s_poly_smoother_apply
!!$ end interface
!!$
interface
subroutine amg_s_poly_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
import :: psb_desc_type, amg_s_poly_smoother_type, psb_s_vect_type, psb_spk_, &
& psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
& psb_ipk_, psb_i_base_vect_type
type(psb_sspmat_type), intent(in), target :: a
Type(psb_desc_type), Intent(inout) :: desc_a
class(amg_s_poly_smoother_type), intent(inout) :: sm
integer(psb_ipk_), intent(out) :: info
class(psb_s_base_sparse_mat), intent(in), optional :: amold
class(psb_s_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
end subroutine amg_s_poly_smoother_bld
end interface
interface
subroutine amg_s_poly_smoother_cnv(sm,info,amold,vmold,imold)
import :: amg_s_poly_smoother_type, psb_spk_, &
& psb_s_base_sparse_mat, psb_s_base_vect_type,&
& psb_ipk_, psb_i_base_vect_type
class(amg_s_poly_smoother_type), intent(inout) :: sm
integer(psb_ipk_), intent(out) :: info
class(psb_s_base_sparse_mat), intent(in), optional :: amold
class(psb_s_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
end subroutine amg_s_poly_smoother_cnv
end interface
interface
subroutine amg_s_poly_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
& psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, &
& psb_ipk_
implicit none
class(amg_s_poly_smoother_type), intent(in) :: sm
type(psb_desc_type), intent(in) :: desc
integer(psb_ipk_), intent(in) :: level
integer(psb_ipk_), intent(out) :: info
character(len=*), intent(in), optional :: prefix, head
logical, optional, intent(in) :: smoother, solver, global_num
end subroutine amg_s_poly_smoother_dmp
end interface
interface
subroutine amg_s_poly_smoother_clone(sm,smout,info)
import :: amg_s_poly_smoother_type, psb_spk_, &
& amg_s_base_smoother_type, psb_ipk_
class(amg_s_poly_smoother_type), intent(inout) :: sm
class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
integer(psb_ipk_), intent(out) :: info
end subroutine amg_s_poly_smoother_clone
end interface
interface
subroutine amg_s_poly_smoother_clone_settings(sm,smout,info)
import :: amg_s_poly_smoother_type, psb_spk_, &
& amg_s_base_smoother_type, psb_ipk_
class(amg_s_poly_smoother_type), intent(inout) :: sm
class(amg_s_base_smoother_type), allocatable, intent(inout) :: smout
integer(psb_ipk_), intent(out) :: info
end subroutine amg_s_poly_smoother_clone_settings
end interface
interface
subroutine amg_s_poly_smoother_clear_data(sm,info)
import :: amg_s_poly_smoother_type, psb_spk_, &
& amg_s_base_smoother_type, psb_ipk_
class(amg_s_poly_smoother_type), intent(inout) :: sm
integer(psb_ipk_), intent(out) :: info
end subroutine amg_s_poly_smoother_clear_data
end interface
interface
subroutine amg_s_poly_smoother_descr(sm,info,iout,coarse,prefix)
import :: amg_s_poly_smoother_type, psb_ipk_
class(amg_s_poly_smoother_type), intent(in) :: sm
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iout
logical, intent(in), optional :: coarse
character(len=*), intent(in), optional :: prefix
end subroutine amg_s_poly_smoother_descr
end interface
interface
subroutine amg_s_poly_smoother_cseti(sm,what,val,info,idx)
import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
& psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
implicit none
class(amg_s_poly_smoother_type), intent(inout) :: sm
character(len=*), intent(in) :: what
integer(psb_ipk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: idx
end subroutine amg_s_poly_smoother_cseti
end interface
interface
subroutine amg_s_poly_smoother_csetc(sm,what,val,info,idx)
import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
& psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
implicit none
class(amg_s_poly_smoother_type), intent(inout) :: sm
character(len=*), intent(in) :: what
character(len=*), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: idx
end subroutine amg_s_poly_smoother_csetc
end interface
interface
subroutine amg_s_poly_smoother_csetr(sm,what,val,info,idx)
import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
& psb_spk_, amg_s_poly_smoother_type, psb_epk_, psb_desc_type, psb_ipk_
implicit none
class(amg_s_poly_smoother_type), intent(inout) :: sm
character(len=*), intent(in) :: what
real(psb_spk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: idx
end subroutine amg_s_poly_smoother_csetr
end interface
contains
subroutine s_poly_smoother_free(sm,info)
Implicit None
! Arguments
class(amg_s_poly_smoother_type), intent(inout) :: sm
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='s_poly_smoother_free'
call psb_erractionsave(err_act)
info = psb_success_
if (allocated(sm%sv)) then
call sm%sv%free(info)
if (info == psb_success_) deallocate(sm%sv,stat=info)
if (info /= psb_success_) then
info = psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
end if
end if
if (allocated(sm%poly_beta)) deallocate(sm%poly_beta)
sm%pa => null()
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine s_poly_smoother_free
function s_poly_smoother_sizeof(sm) result(val)
implicit none
! Arguments
class(amg_s_poly_smoother_type), intent(in) :: sm
integer(psb_epk_) :: val
val = psb_sizeof_dp
if (allocated(sm%sv)) val = val + sm%sv%sizeof()
if (allocated(sm%poly_beta)) val = val + psb_sizeof_dp * size(sm%poly_beta)
return
end function s_poly_smoother_sizeof
subroutine s_poly_smoother_default(sm)
Implicit None
! Arguments
class(amg_s_poly_smoother_type), intent(inout) :: sm
!
! Default: BJAC with no residual check
!
sm%pdegree = 1
sm%rho_ba = -sone
sm%variant = amg_poly_lottes_
sm%rho_estimate = amg_poly_rho_est_power_
sm%rho_estimate_iterations = 20
if (allocated(sm%sv)) then
call sm%sv%default()
end if
return
end subroutine s_poly_smoother_default
function s_poly_smoother_get_nzeros(sm) result(val)
implicit none
! Arguments
class(amg_s_poly_smoother_type), intent(in) :: sm
integer(psb_epk_) :: val
integer(psb_ipk_) :: i
val = 0
if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
return
end function s_poly_smoother_get_nzeros
function s_poly_smoother_get_wrksize(sm) result(val)
implicit none
class(amg_s_poly_smoother_type), intent(inout) :: sm
integer(psb_ipk_) :: val
val = 4
if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
end function s_poly_smoother_get_wrksize
function s_poly_smoother_get_fmt() result(val)
implicit none
character(len=32) :: val
val = "Polynomial smoother"
end function s_poly_smoother_get_fmt
function s_poly_smoother_get_id() result(val)
implicit none
integer(psb_ipk_) :: val
val = amg_poly_
end function s_poly_smoother_get_id
end module amg_s_poly_smoother