!!$
!!$
!!$ MLD2P4 version 2.0
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
!!$
!!$ (C) Copyright 2008,2009,2010, 2010
!!$
!!$ 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.
!!$
!!$
!
!
!
!
!
!
module mld_c_diag_solver
use mld_c_prec_type
type, extends(mld_c_base_solver_type) :: mld_c_diag_solver_type
complex(psb_spk_), allocatable :: d(:)
contains
procedure, pass(sv) :: build => c_diag_solver_bld
procedure, pass(sv) :: apply => c_diag_solver_apply
procedure, pass(sv) :: free => c_diag_solver_free
procedure, pass(sv) :: seti => c_diag_solver_seti
procedure, pass(sv) :: setc => c_diag_solver_setc
procedure, pass(sv) :: setr => c_diag_solver_setr
procedure, pass(sv) :: descr => c_diag_solver_descr
procedure, pass(sv) :: sizeof => c_diag_solver_sizeof
end type mld_c_diag_solver_type
private :: c_diag_solver_bld, c_diag_solver_apply, &
& c_diag_solver_free, c_diag_solver_seti, &
& c_diag_solver_setc, c_diag_solver_setr,&
& c_diag_solver_descr, c_diag_solver_sizeof
contains
subroutine c_diag_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info)
use psb_base_mod
type(psb_desc_type), intent(in) :: desc_data
class(mld_c_diag_solver_type), intent(in) :: sv
complex(psb_spk_),intent(inout) :: x(:)
complex(psb_spk_),intent(inout) :: y(:)
complex(psb_spk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
complex(psb_spk_),target, intent(inout) :: work(:)
integer, intent(out) :: info
integer :: n_row,n_col
complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
integer :: ictxt,np,me,i, err_act
character :: trans_
character(len=20) :: name='c_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 (beta == czero) then
if (alpha == czero) then
y(1:n_row) = czero
else if (alpha == cone) then
do i=1, n_row
y(i) = sv%d(i) * x(i)
end do
else if (alpha == -cone) 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 == cone) then
if (alpha == czero) then
!y(1:n_row) = czero
else if (alpha == cone) then
do i=1, n_row
y(i) = sv%d(i) * x(i) + y(i)
end do
else if (alpha == -cone) 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 == -cone) then
if (alpha == czero) then
y(1:n_row) = -y(1:n_row)
else if (alpha == cone) then
do i=1, n_row
y(i) = sv%d(i) * x(i) - y(i)
end do
else if (alpha == -cone) 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 == czero) then
y(1:n_row) = beta *y(1:n_row)
else if (alpha == cone) then
do i=1, n_row
y(i) = sv%d(i) * x(i) + beta*y(i)
end do
else if (alpha == -cone) 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
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 c_diag_solver_apply
subroutine c_diag_solver_bld(a,desc_a,sv,upd,info,b)
use psb_base_mod
Implicit None
! Arguments
type(psb_cspmat_type), intent(in), target :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(mld_c_diag_solver_type), intent(inout) :: sv
character, intent(in) :: upd
integer, intent(out) :: info
type(psb_cspmat_type), intent(in), target, optional :: b
! Local variables
integer :: n_row,n_col, nrow_a, nztota
complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
integer :: ictxt,np,me,i, err_act, debug_unit, debug_level
character(len=20) :: name='c_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) == czero) then
sv%d(i) = cone
else
sv%d(i) = cone/sv%d(i)
end if
end do
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 c_diag_solver_bld
subroutine c_diag_solver_seti(sv,what,val,info)
use psb_base_mod
Implicit None
! Arguments
class(mld_c_diag_solver_type), intent(inout) :: sv
integer, intent(in) :: what
integer, intent(in) :: val
integer, intent(out) :: info
Integer :: err_act
character(len=20) :: name='c_diag_solver_seti'
info = psb_success_
!!$ call psb_erractionsave(err_act)
!!$
!!$ select case(what)
!!$ case(mld_sub_solve_)
!!$ sv%fact_type = val
!!$ case(mld_sub_fillin_)
!!$ sv%fill_in = val
!!$ case default
!!$ write(0,*) name,': Error: invalid WHAT'
!!$ info = -2
!!$ end select
!!$
!!$ 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 c_diag_solver_seti
subroutine c_diag_solver_setc(sv,what,val,info)
use psb_base_mod
Implicit None
! Arguments
class(mld_c_diag_solver_type), intent(inout) :: sv
integer, intent(in) :: what
character(len=*), intent(in) :: val
integer, intent(out) :: info
Integer :: err_act, ival
character(len=20) :: name='c_diag_solver_setc'
info = psb_success_
!!$ call psb_erractionsave(err_act)
!!$
!!$
!!$ call mld_stringval(val,ival,info)
!!$ if (info == psb_success_) call sv%set(what,ival,info)
!!$ if (info /= psb_success_) then
!!$ info = psb_err_from_subroutine_
!!$ call psb_errpush(info, name)
!!$ 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 c_diag_solver_setc
subroutine c_diag_solver_setr(sv,what,val,info)
use psb_base_mod
Implicit None
! Arguments
class(mld_c_diag_solver_type), intent(inout) :: sv
integer, intent(in) :: what
real(psb_spk_), intent(in) :: val
integer, intent(out) :: info
Integer :: err_act
character(len=20) :: name='c_diag_solver_setr'
info = psb_success_
!!$ call psb_erractionsave(err_act)
!!$
!!$ select case(what)
!!$ case(mld_sub_iluthrs_)
!!$ sv%thresh = val
!!$ case default
!!$ write(0,*) name,': Error: invalid WHAT'
!!$ info = -2
!!$ goto 9999
!!$ end select
!!$
!!$ 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 c_diag_solver_setr
subroutine c_diag_solver_free(sv,info)
use psb_base_mod
Implicit None
! Arguments
class(mld_c_diag_solver_type), intent(inout) :: sv
integer, intent(out) :: info
Integer :: err_act
character(len=20) :: name='c_diag_solver_free'
call psb_erractionsave(err_act)
info = psb_success_
if (allocated(sv%d)) then
deallocate(sv%d,stat=info)
if (info /= psb_success_) then
info = psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
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 c_diag_solver_free
subroutine c_diag_solver_descr(sv,info,iout,coarse)
use psb_base_mod
Implicit None
! Arguments
class(mld_c_diag_solver_type), intent(in) :: sv
integer, intent(out) :: info
integer, intent(in), optional :: iout
logical, intent(in), optional :: coarse
! Local variables
integer :: err_act
integer :: ictxt, me, np
character(len=20), parameter :: name='mld_c_diag_solver_descr'
integer :: iout_
info = psb_success_
if (present(iout)) then
iout_ = iout
else
iout_ = 6
endif
write(iout_,*) ' Diagonal local solver '
return
end subroutine c_diag_solver_descr
function c_diag_solver_sizeof(sv) result(val)
use psb_base_mod
implicit none
! Arguments
class(mld_c_diag_solver_type), intent(in) :: sv
integer(psb_long_int_k_) :: val
integer :: i
val = 0
if (allocated(sv%d)) val = val + 2*psb_sizeof_sp * size(sv%d)
return
end function c_diag_solver_sizeof
end module mld_c_diag_solver