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amg4psblas/mlprec/mld_s_jac_smoother.f90

285 lines
11 KiB
Fortran

!
!
! MLD2P4 version 2.2
! MultiLevel Domain Decomposition Parallel Preconditioners Package
! based on PSBLAS (Parallel Sparse BLAS version 3.5)
!
! (C) Copyright 2008-2018
!
! 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 MLD2P4 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 MLD2P4 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: mld_s_jac_smoother_mod.f90
!
! Module: mld_s_jac_smoother_mod
!
! This module defines:
! the mld_s_jac_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
! then the ND is the entire off-diagonal part of the matrix (including the
! main diagonal block), so that it becomes possible to implement
! pure Jacobi global solver.
!
module mld_s_jac_smoother
use mld_s_base_smoother_mod
type, extends(mld_s_base_smoother_type) :: mld_s_jac_smoother_type
! The local solver component is inherited from the
! parent type.
! class(mld_s_base_solver_type), allocatable :: sv
!
type(psb_sspmat_type), pointer :: pa => null()
type(psb_sspmat_type) :: nd
integer(psb_ipk_) :: nnz_nd_tot
contains
procedure, pass(sm) :: dump => mld_s_jac_smoother_dmp
procedure, pass(sm) :: build => mld_s_jac_smoother_bld
procedure, pass(sm) :: cnv => mld_s_jac_smoother_cnv
procedure, pass(sm) :: clone => mld_s_jac_smoother_clone
procedure, pass(sm) :: apply_v => mld_s_jac_smoother_apply_vect
procedure, pass(sm) :: apply_a => mld_s_jac_smoother_apply
procedure, pass(sm) :: free => s_jac_smoother_free
procedure, pass(sm) :: descr => mld_s_jac_smoother_descr
procedure, pass(sm) :: sizeof => s_jac_smoother_sizeof
procedure, pass(sm) :: get_nzeros => s_jac_smoother_get_nzeros
procedure, pass(sm) :: get_wrksz => s_jac_smoother_get_wrksize
procedure, nopass :: get_fmt => s_jac_smoother_get_fmt
procedure, nopass :: get_id => s_jac_smoother_get_id
end type mld_s_jac_smoother_type
private :: s_jac_smoother_free, &
& s_jac_smoother_sizeof, s_jac_smoother_get_nzeros, &
& s_jac_smoother_get_fmt, s_jac_smoother_get_id, &
& s_jac_smoother_get_wrksize
interface
subroutine mld_s_jac_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
& sweeps,work,wv,info,init,initu)
import :: psb_desc_type, mld_s_jac_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(mld_s_jac_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 mld_s_jac_smoother_apply_vect
end interface
interface
subroutine mld_s_jac_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
& sweeps,work,info,init,initu)
import :: psb_desc_type, mld_s_jac_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(mld_s_jac_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 mld_s_jac_smoother_apply
end interface
interface
subroutine mld_s_jac_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
import :: psb_desc_type, mld_s_jac_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(mld_s_jac_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 mld_s_jac_smoother_bld
end interface
interface
subroutine mld_s_jac_smoother_cnv(sm,info,amold,vmold,imold)
import :: mld_s_jac_smoother_type, psb_spk_, &
& psb_s_base_sparse_mat, psb_s_base_vect_type,&
& psb_ipk_, psb_i_base_vect_type
class(mld_s_jac_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 mld_s_jac_smoother_cnv
end interface
interface
subroutine mld_s_jac_smoother_dmp(sm,ictxt,level,info,prefix,head,smoother,solver)
import :: psb_sspmat_type, psb_s_vect_type, psb_s_base_vect_type, &
& psb_spk_, mld_s_jac_smoother_type, psb_epk_, psb_desc_type, &
& psb_ipk_
implicit none
class(mld_s_jac_smoother_type), intent(in) :: sm
integer(psb_ipk_), intent(in) :: ictxt
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
end subroutine mld_s_jac_smoother_dmp
end interface
interface
subroutine mld_s_jac_smoother_clone(sm,smout,info)
import :: mld_s_jac_smoother_type, psb_spk_, &
& mld_s_base_smoother_type, psb_ipk_
class(mld_s_jac_smoother_type), intent(inout) :: sm
class(mld_s_base_smoother_type), allocatable, intent(inout) :: smout
integer(psb_ipk_), intent(out) :: info
end subroutine mld_s_jac_smoother_clone
end interface
interface
subroutine mld_s_jac_smoother_descr(sm,info,iout,coarse)
import :: mld_s_jac_smoother_type, psb_ipk_
class(mld_s_jac_smoother_type), intent(in) :: sm
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iout
logical, intent(in), optional :: coarse
end subroutine mld_s_jac_smoother_descr
end interface
contains
subroutine s_jac_smoother_free(sm,info)
Implicit None
! Arguments
class(mld_s_jac_smoother_type), intent(inout) :: sm
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='s_jac_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
call sm%nd%free()
sm%pa => null()
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine s_jac_smoother_free
function s_jac_smoother_sizeof(sm) result(val)
implicit none
! Arguments
class(mld_s_jac_smoother_type), intent(in) :: sm
integer(psb_epk_) :: val
integer(psb_ipk_) :: i
val = psb_sizeof_ip
if (allocated(sm%sv)) val = val + sm%sv%sizeof()
val = val + sm%nd%sizeof()
return
end function s_jac_smoother_sizeof
function s_jac_smoother_get_nzeros(sm) result(val)
implicit none
! Arguments
class(mld_s_jac_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()
val = val + sm%nd%get_nzeros()
return
end function s_jac_smoother_get_nzeros
function s_jac_smoother_get_wrksize(sm) result(val)
implicit none
class(mld_s_jac_smoother_type), intent(inout) :: sm
integer(psb_ipk_) :: val
val = 2
if (allocated(sm%sv)) val = val + sm%sv%get_wrksz()
end function s_jac_smoother_get_wrksize
function s_jac_smoother_get_fmt() result(val)
implicit none
character(len=32) :: val
val = "Jacobi smoother"
end function s_jac_smoother_get_fmt
function s_jac_smoother_get_id() result(val)
implicit none
integer(psb_ipk_) :: val
val = mld_jac_
end function s_jac_smoother_get_id
end module mld_s_jac_smoother