You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
414 lines
12 KiB
Fortran
414 lines
12 KiB
Fortran
!!$
|
|
!!$
|
|
!!$ MLD2P4 version 2.0
|
|
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
|
|
!!$
|
|
!!$ (C) Copyright 2008,2009,2010,2012
|
|
!!$
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$ Pasqua D'Ambra ICAR-CNR, Naples
|
|
!!$ Daniela di Serafino Second University of Naples
|
|
!!$
|
|
!!$ 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.
|
|
!!$
|
|
!!$
|
|
!
|
|
!
|
|
!
|
|
!
|
|
!
|
|
!
|
|
subroutine mld_s_diag_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,work,info)
|
|
use psb_base_mod
|
|
use mld_s_diag_solver, mld_protect_name => mld_s_diag_solver_apply_vect
|
|
implicit none
|
|
type(psb_desc_type), intent(in) :: desc_data
|
|
class(mld_s_diag_solver_type), intent(inout) :: sv
|
|
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
|
|
real(psb_spk_),target, intent(inout) :: work(:)
|
|
integer, intent(out) :: info
|
|
|
|
integer :: n_row,n_col
|
|
real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
|
integer :: ictxt,np,me,i, err_act
|
|
character :: trans_
|
|
character(len=20) :: name='s_diag_solver_apply'
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_success_
|
|
|
|
trans_ = psb_toupper(trans)
|
|
select case(trans_)
|
|
case('N')
|
|
case('T','C')
|
|
case default
|
|
call psb_errpush(psb_err_iarg_invalid_i_,name)
|
|
goto 9999
|
|
end select
|
|
|
|
n_row = desc_data%get_local_rows()
|
|
n_col = desc_data%get_local_cols()
|
|
if (x%get_nrows() < n_row) then
|
|
info = 36
|
|
call psb_errpush(info,name,i_err=(/2,n_row,0,0,0/))
|
|
goto 9999
|
|
end if
|
|
if (y%get_nrows() < n_row) then
|
|
info = 36
|
|
call psb_errpush(info,name,i_err=(/3,n_row,0,0,0/))
|
|
goto 9999
|
|
end if
|
|
if (.not.allocated(sv%dv)) then
|
|
info = 1124
|
|
call psb_errpush(info,name,a_err="preconditioner: D")
|
|
goto 9999
|
|
end if
|
|
if (sv%dv%get_nrows() < n_row) then
|
|
info = 1124
|
|
call psb_errpush(info,name,a_err="preconditioner: D")
|
|
goto 9999
|
|
end if
|
|
|
|
call y%mlt(alpha,sv%dv,x,beta,info,conjgx=trans_)
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='vect%mlt')
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine mld_s_diag_solver_apply_vect
|
|
|
|
subroutine mld_s_diag_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info)
|
|
use psb_base_mod
|
|
use mld_s_diag_solver, mld_protect_name => mld_s_diag_solver_apply
|
|
implicit none
|
|
type(psb_desc_type), intent(in) :: desc_data
|
|
class(mld_s_diag_solver_type), intent(in) :: sv
|
|
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
|
|
real(psb_spk_),target, intent(inout) :: work(:)
|
|
integer, intent(out) :: info
|
|
|
|
integer :: n_row,n_col
|
|
real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
|
integer :: ictxt,np,me,i, err_act
|
|
character :: trans_
|
|
character(len=20) :: name='s_diag_solver_apply'
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_success_
|
|
|
|
trans_ = psb_toupper(trans)
|
|
select case(trans_)
|
|
case('N')
|
|
case('T','C')
|
|
case default
|
|
call psb_errpush(psb_err_iarg_invalid_i_,name)
|
|
goto 9999
|
|
end select
|
|
|
|
n_row = desc_data%get_local_rows()
|
|
n_col = desc_data%get_local_cols()
|
|
|
|
if (trans_ == 'C') then
|
|
if (beta == szero) then
|
|
|
|
if (alpha == szero) then
|
|
y(1:n_row) = szero
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = (sv%d(i)) * x(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -(sv%d(i)) * x(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * (sv%d(i)) * x(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == sone) then
|
|
|
|
if (alpha == szero) then
|
|
!y(1:n_row) = szero
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = (sv%d(i)) * x(i) + y(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -(sv%d(i)) * x(i) + y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * (sv%d(i)) * x(i) + y(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == -sone) then
|
|
|
|
if (alpha == szero) then
|
|
y(1:n_row) = -y(1:n_row)
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = (sv%d(i)) * x(i) - y(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -(sv%d(i)) * x(i) - y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * (sv%d(i)) * x(i) - y(i)
|
|
end do
|
|
end if
|
|
|
|
else
|
|
|
|
if (alpha == szero) then
|
|
y(1:n_row) = beta *y(1:n_row)
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = (sv%d(i)) * x(i) + beta*y(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -(sv%d(i)) * x(i) + beta*y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * (sv%d(i)) * x(i) + beta*y(i)
|
|
end do
|
|
end if
|
|
|
|
end if
|
|
|
|
else if (trans_ /= 'C') then
|
|
|
|
if (beta == szero) then
|
|
|
|
if (alpha == szero) then
|
|
y(1:n_row) = szero
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == sone) then
|
|
|
|
if (alpha == szero) then
|
|
!y(1:n_row) = szero
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i) + y(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i) + y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i) + y(i)
|
|
end do
|
|
end if
|
|
|
|
else if (beta == -sone) then
|
|
|
|
if (alpha == szero) then
|
|
y(1:n_row) = -y(1:n_row)
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i) - y(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i) - y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i) - y(i)
|
|
end do
|
|
end if
|
|
|
|
else
|
|
|
|
if (alpha == szero) then
|
|
y(1:n_row) = beta *y(1:n_row)
|
|
else if (alpha == sone) then
|
|
do i=1, n_row
|
|
y(i) = sv%d(i) * x(i) + beta*y(i)
|
|
end do
|
|
else if (alpha == -sone) then
|
|
do i=1, n_row
|
|
y(i) = -sv%d(i) * x(i) + beta*y(i)
|
|
end do
|
|
else
|
|
do i=1, n_row
|
|
y(i) = alpha * sv%d(i) * x(i) + beta*y(i)
|
|
end do
|
|
end if
|
|
|
|
end if
|
|
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine mld_s_diag_solver_apply
|
|
|
|
subroutine mld_s_diag_solver_bld(a,desc_a,sv,upd,info,b,amold,vmold)
|
|
use psb_base_mod
|
|
use mld_s_diag_solver, mld_protect_name => mld_s_diag_solver_bld
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
type(psb_sspmat_type), intent(in), target :: a
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
|
class(mld_s_diag_solver_type), intent(inout) :: sv
|
|
character, intent(in) :: upd
|
|
integer, intent(out) :: info
|
|
type(psb_sspmat_type), intent(in), target, optional :: b
|
|
class(psb_s_base_sparse_mat), intent(in), optional :: amold
|
|
class(psb_s_base_vect_type), intent(in), optional :: vmold
|
|
! Local variables
|
|
integer :: n_row,n_col, nrow_a, nztota
|
|
real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
|
integer :: ictxt,np,me,i, err_act, debug_unit, debug_level
|
|
character(len=20) :: name='s_diag_solver_bld', ch_err
|
|
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
ictxt = desc_a%get_context()
|
|
call psb_info(ictxt, me, np)
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),' start'
|
|
|
|
|
|
n_row = desc_a%get_local_rows()
|
|
nrow_a = a%get_nrows()
|
|
if (allocated(sv%d)) then
|
|
if (size(sv%d) < n_row) then
|
|
deallocate(sv%d)
|
|
endif
|
|
endif
|
|
if (.not.allocated(sv%d)) then
|
|
allocate(sv%d(n_row),stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
|
|
goto 9999
|
|
end if
|
|
|
|
endif
|
|
|
|
call a%get_diag(sv%d,info)
|
|
if (present(b)) then
|
|
if (info == psb_success_) call b%get_diag(sv%d(nrow_a+1:), info)
|
|
end if
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='get_diag')
|
|
goto 9999
|
|
end if
|
|
|
|
do i=1,n_row
|
|
if (sv%d(i) == szero) then
|
|
sv%d(i) = sone
|
|
else
|
|
sv%d(i) = sone/sv%d(i)
|
|
end if
|
|
end do
|
|
allocate(sv%dv,stat=info)
|
|
if (info == psb_success_) then
|
|
if (present(vmold)) then
|
|
allocate(sv%dv%v,mold=vmold,stat=info)
|
|
else
|
|
allocate(psb_s_base_vect_type :: sv%dv%v,stat=info)
|
|
end if
|
|
end if
|
|
if (info == psb_success_) then
|
|
call sv%dv%bld(sv%d)
|
|
else
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate sv%dv')
|
|
goto 9999
|
|
end if
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),' end'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
end subroutine mld_s_diag_solver_bld
|
|
|