!!$
!!$
!!$ MLD2P4 version 2.0
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.3)
!!$
!!$ (C) Copyright 2008, 2010, 2012, 2015
!!$
!!$ 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_c_jac_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
use psb_base_mod
use mld_c_jac_smoother, mld_protect_name => mld_c_jac_smoother_apply_vect
implicit none
type(psb_desc_type), intent(in) :: desc_data
class(mld_c_jac_smoother_type), intent(inout) :: sm
type(psb_c_vect_type),intent(inout) :: x
type(psb_c_vect_type),intent(inout) :: y
complex(psb_spk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
integer, intent(in) :: sweeps
complex(psb_spk_),target, intent(inout) :: work(:)
integer, intent(out) :: info
integer :: n_row,n_col
type(psb_c_vect_type) :: tx, ty
complex(psb_spk_), pointer :: ww(:), aux(:)
integer :: ictxt,np,me,i, err_act
character :: trans_
character(len=20) :: name='c_jac_smoother_apply'
call psb_erractionsave(err_act)
info = psb_success_
trans_ = psb_toupper(trans)
select case(trans_)
case('N')
case('T')
case('C')
case default
call psb_errpush(psb_err_iarg_invalid_i_,name)
goto 9999
end select
if (.not.allocated(sm%sv)) then
info = 1121
call psb_errpush(info,name)
goto 9999
end if
n_row = desc_data%get_local_rows()
n_col = desc_data%get_local_cols()
if (n_col <= size(work)) then
ww => work(1:n_col)
if ((4*n_col+n_col) <= size(work)) then
aux => work(n_col+1:)
else
allocate(aux(4*n_col),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name,i_err=(/4*n_col,0,0,0,0/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
endif
else
allocate(ww(n_col),aux(4*n_col),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name,i_err=(/5*n_col,0,0,0,0/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
endif
if ((sweeps == 1).or.(sm%nnz_nd_tot==0)) then
call sm%sv%apply(alpha,x,beta,y,desc_data,trans_,aux,info)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,&
& name,a_err='Error in sub_aply Jacobi Sweeps = 1')
goto 9999
endif
else if (sweeps > 1) then
!
!
! Apply multiple sweeps of a block-Jacobi solver
! to compute an approximate solution of a linear system.
!
!
call tx%bld(x%get_nrows(),mold=x%v)
call tx%set(czero)
call ty%bld(x%get_nrows(),mold=x%v)
do i=1, sweeps
!
! Compute Y(j+1) = D^(-1)*(X-ND*Y(j)), where D and ND are the
! block diagonal part and the remaining part of the local matrix
! and Y(j) is the approximate solution at sweep j.
!
call psb_geaxpby(cone,x,czero,ty,desc_data,info)
call psb_spmm(-cone,sm%nd,tx,cone,ty,desc_data,info,work=aux,trans=trans_)
if (info /= psb_success_) exit
call sm%sv%apply(cone,ty,czero,tx,desc_data,trans_,aux,info)
if (info /= psb_success_) exit
end do
if (info == psb_success_) call psb_geaxpby(alpha,tx,beta,y,desc_data,info)
if (info /= psb_success_) then
info=psb_err_internal_error_
call psb_errpush(info,name,a_err='subsolve with Jacobi sweeps > 1')
goto 9999
end if
call tx%free(info)
if (info == psb_success_) call ty%free(info)
if (info /= psb_success_) then
info=psb_err_internal_error_
call psb_errpush(info,name,a_err='final cleanup with Jacobi sweeps > 1')
goto 9999
end if
else
info = psb_err_iarg_neg_
call psb_errpush(info,name,&
& i_err=(/2,sweeps,0,0,0/))
goto 9999
endif
if (n_col <= size(work)) then
if ((4*n_col+n_col) <= size(work)) then
else
deallocate(aux)
endif
else
deallocate(ww,aux)
endif
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_c_jac_smoother_apply_vect
subroutine mld_c_jac_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
use psb_base_mod
use mld_c_jac_smoother, mld_protect_name => mld_c_jac_smoother_apply
implicit none
type(psb_desc_type), intent(in) :: desc_data
class(mld_c_jac_smoother_type), intent(in) :: sm
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
integer, intent(in) :: sweeps
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_jac_smoother_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
if (.not.allocated(sm%sv)) then
info = 1121
call psb_errpush(info,name)
goto 9999
end if
n_row = desc_data%get_local_rows()
n_col = desc_data%get_local_cols()
if (n_col <= size(work)) then
ww => work(1:n_col)
if ((4*n_col+n_col) <= size(work)) then
aux => work(n_col+1:)
else
allocate(aux(4*n_col),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name,i_err=(/4*n_col,0,0,0,0/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
endif
else
allocate(ww(n_col),aux(4*n_col),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name,i_err=(/5*n_col,0,0,0,0/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
endif
if ((sweeps == 1).or.(sm%nnz_nd_tot==0)) then
call sm%sv%apply(alpha,x,beta,y,desc_data,trans_,aux,info)
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,&
& name,a_err='Error in sub_aply Jacobi Sweeps = 1')
goto 9999
endif
else if (sweeps > 1) then
!
!
! Apply multiple sweeps of a block-Jacobi solver
! to compute an approximate solution of a linear system.
!
!
allocate(tx(n_col),ty(n_col),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name,i_err=(/2*n_col,0,0,0,0/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
tx = czero
ty = czero
do i=1, sweeps
!
! Compute Y(j+1) = D^(-1)*(X-ND*Y(j)), where D and ND are the
! block diagonal part and the remaining part of the local matrix
! and Y(j) is the approximate solution at sweep j.
!
ty(1:n_row) = x(1:n_row)
call psb_spmm(-cone,sm%nd,tx,cone,ty,desc_data,info,work=aux,trans=trans_)
if (info /= psb_success_) exit
call sm%sv%apply(cone,ty,czero,tx,desc_data,trans_,aux,info)
if (info /= psb_success_) exit
end do
if (info == psb_success_) call psb_geaxpby(alpha,tx,beta,y,desc_data,info)
if (info /= psb_success_) then
info=psb_err_internal_error_
call psb_errpush(info,name,a_err='subsolve with Jacobi sweeps > 1')
goto 9999
end if
deallocate(tx,ty,stat=info)
if (info /= psb_success_) then
info=psb_err_internal_error_
call psb_errpush(info,name,a_err='final cleanup with Jacobi sweeps > 1')
goto 9999
end if
else
info = psb_err_iarg_neg_
call psb_errpush(info,name,&
& i_err=(/2,sweeps,0,0,0/))
goto 9999
endif
if (n_col <= size(work)) then
if ((4*n_col+n_col) <= size(work)) then
else
deallocate(aux)
endif
else
deallocate(ww,aux)
endif
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_c_jac_smoother_apply
subroutine mld_c_jac_smoother_bld(a,desc_a,sm,upd,info,amold,vmold)
use psb_base_mod
use mld_c_diag_solver
use mld_c_jac_smoother, mld_protect_name => mld_c_jac_smoother_bld
Implicit None
! Arguments
type(psb_cspmat_type), intent(in), target :: a
Type(psb_desc_type), Intent(in) :: desc_a
class(mld_c_jac_smoother_type), intent(inout) :: sm
character, intent(in) :: upd
integer, intent(out) :: info
class(psb_c_base_sparse_mat), intent(in), optional :: amold
class(psb_c_base_vect_type), intent(in), optional :: vmold
! Local variables
integer :: n_row,n_col, nrow_a, nztota, nzeros
complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
integer :: ictxt,np,me,i, err_act, debug_unit, debug_level
character(len=20) :: name='c_jac_smoother_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()
nztota = a%get_nzeros()
select type (smsv => sm%sv)
type is (mld_c_diag_solver_type)
call a%clip_diag(sm%nd,info)
class default
call a%csclip(sm%nd,info,&
& jmin=nrow_a+1,rscale=.false.,cscale=.false.)
end select
if (info == psb_success_) then
if (present(amold)) then
call sm%nd%cscnv(info,&
& mold=amold,dupl=psb_dupl_add_)
else
call sm%nd%cscnv(info,&
& type='csr',dupl=psb_dupl_add_)
endif
end if
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,&
& a_err='clip & psb_spcnv csr 4')
goto 9999
end if
call sm%sv%build(a,desc_a,upd,info,amold=amold,vmold=vmold)
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,&
& a_err='solver build')
goto 9999
end if
nzeros = sm%nd%get_nzeros()
call psb_sum(ictxt,nzeros)
sm%nnz_nd_tot = nzeros
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_c_jac_smoother_bld