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512 lines
14 KiB
Fortran
512 lines
14 KiB
Fortran
!!$
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!!$
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!!$ MLD2P4 version 2.0
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!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
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!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
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!!$
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!!$ (C) Copyright 2008,2009,2010, 2010
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!!$
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari CNRS-IRIT, Toulouse
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!!$ Pasqua D'Ambra ICAR-CNR, Naples
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!!$ Daniela di Serafino Second University of Naples
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the MLD2P4 group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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!
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!
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!
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!
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!
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!
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module mld_s_jac_smoother
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use mld_s_prec_type
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type, extends(mld_s_base_smoother_type) :: mld_s_jac_smoother_type
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! The local solver component is inherited from the
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! parent type.
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! class(mld_s_base_solver_type), allocatable :: sv
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!
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type(psb_sspmat_type) :: nd
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integer :: nnz_nd_tot
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contains
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procedure, pass(sm) :: build => s_jac_smoother_bld
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procedure, pass(sm) :: apply => s_jac_smoother_apply
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procedure, pass(sm) :: free => s_jac_smoother_free
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procedure, pass(sm) :: seti => s_jac_smoother_seti
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procedure, pass(sm) :: setc => s_jac_smoother_setc
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procedure, pass(sm) :: setr => s_jac_smoother_setr
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procedure, pass(sm) :: descr => s_jac_smoother_descr
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procedure, pass(sm) :: sizeof => s_jac_smoother_sizeof
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end type mld_s_jac_smoother_type
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private :: s_jac_smoother_bld, s_jac_smoother_apply, &
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& s_jac_smoother_free, s_jac_smoother_seti, &
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& s_jac_smoother_setc, s_jac_smoother_setr,&
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& s_jac_smoother_descr, s_jac_smoother_sizeof
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contains
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subroutine s_jac_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
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use psb_sparse_mod
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_s_jac_smoother_type), intent(in) :: sm
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real(psb_spk_),intent(in) :: x(:)
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real(psb_spk_),intent(inout) :: y(:)
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real(psb_spk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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integer, intent(in) :: sweeps
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real(psb_spk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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integer :: n_row,n_col
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real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
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integer :: ictxt,np,me,i, err_act
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character :: trans_
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character(len=20) :: name='d_jac_smoother_apply'
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call psb_erractionsave(err_act)
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info = psb_success_
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trans_ = psb_toupper(trans)
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select case(trans_)
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case('N')
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case('T','C')
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case default
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call psb_errpush(psb_err_iarg_invalid_i_,name)
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goto 9999
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end select
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if (.not.allocated(sm%sv)) then
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info = 1121
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call psb_errpush(info,name)
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goto 9999
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end if
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n_row = psb_cd_get_local_rows(desc_data)
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n_col = psb_cd_get_local_cols(desc_data)
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if (n_col <= size(work)) then
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ww => work(1:n_col)
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if ((4*n_col+n_col) <= size(work)) then
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aux => work(n_col+1:)
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else
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allocate(aux(4*n_col),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_
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call psb_errpush(info,name,i_err=(/4*n_col,0,0,0,0/),&
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& a_err='real(psb_spk_)')
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goto 9999
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end if
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endif
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else
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allocate(ww(n_col),aux(4*n_col),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_
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call psb_errpush(info,name,i_err=(/5*n_col,0,0,0,0/),&
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& a_err='real(psb_spk_)')
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goto 9999
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end if
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endif
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if ((sweeps == 1).or.(sm%nnz_nd_tot==0)) then
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call sm%sv%apply(alpha,x,beta,y,desc_data,trans_,aux,info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,a_err='Error in sub_aply Jacobi Sweeps = 1')
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goto 9999
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endif
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else if (sweeps > 1) then
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!
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!
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! Apply multiple sweeps of a block-Jacobi solver
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! to compute an approximate solution of a linear system.
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!
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!
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allocate(tx(n_col),ty(n_col),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_
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call psb_errpush(info,name,i_err=(/2*n_col,0,0,0,0/),&
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& a_err='real(psb_spk_)')
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goto 9999
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end if
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tx = szero
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ty = szero
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do i=1, sweeps
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!
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! Compute Y(j+1) = D^(-1)*(X-ND*Y(j)), where D and ND are the
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! block diagonal part and the remaining part of the local matrix
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! and Y(j) is the approximate solution at sweep j.
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!
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ty(1:n_row) = x(1:n_row)
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call psb_spmm(-sone,sm%nd,tx,sone,ty,desc_data,info,work=aux,trans=trans_)
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if (info /= psb_success_) exit
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call sm%sv%apply(sone,ty,szero,tx,desc_data,trans_,aux,info)
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if (info /= psb_success_) exit
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end do
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if (info == psb_success_) call psb_geaxpby(alpha,tx,beta,y,desc_data,info)
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if (info /= psb_success_) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='subsolve with Jacobi sweeps > 1')
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goto 9999
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end if
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deallocate(tx,ty,stat=info)
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if (info /= psb_success_) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='final cleanup with Jacobi sweeps > 1')
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goto 9999
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end if
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else
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info = psb_err_iarg_neg_
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call psb_errpush(info,name,&
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& i_err=(/2,sweeps,0,0,0/))
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goto 9999
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endif
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if (n_col <= size(work)) then
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if ((4*n_col+n_col) <= size(work)) then
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else
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deallocate(aux)
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endif
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else
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deallocate(ww,aux)
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endif
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine s_jac_smoother_apply
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subroutine s_jac_smoother_bld(a,desc_a,sm,upd,info)
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use psb_sparse_mod
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use mld_s_diag_solver
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Implicit None
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! Arguments
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type(psb_sspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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class(mld_s_jac_smoother_type), intent(inout) :: sm
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character, intent(in) :: upd
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integer, intent(out) :: info
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! Local variables
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integer :: n_row,n_col, nrow_a, nztota, nzeros
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real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
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integer :: ictxt,np,me,i, err_act, debug_unit, debug_level
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character(len=20) :: name='d_jac_smoother_bld', ch_err
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info=psb_success_
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call psb_erractionsave(err_act)
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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ictxt = psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),' start'
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n_row = psb_cd_get_local_rows(desc_a)
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nrow_a = a%get_nrows()
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nztota = a%get_nzeros()
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select type (smsv => sm%sv)
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type is (mld_s_diag_solver_type)
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call a%clip_diag(sm%nd,info)
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class default
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call a%csclip(sm%nd,info,&
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& jmin=nrow_a+1,rscale=.false.,cscale=.false.)
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end select
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if (info == psb_success_) call sm%nd%cscnv(info,&
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& type='csr',dupl=psb_dupl_add_)
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if (info == psb_success_) &
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& call sm%sv%build(a,desc_a,upd,info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='clip & psb_spcnv csr 4')
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goto 9999
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end if
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nzeros = sm%nd%get_nzeros()
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call psb_sum(ictxt,nzeros)
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sm%nnz_nd_tot = nzeros
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),' end'
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine s_jac_smoother_bld
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subroutine s_jac_smoother_seti(sm,what,val,info)
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use psb_sparse_mod
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Implicit None
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! Arguments
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class(mld_s_jac_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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integer, intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_jac_smoother_seti'
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info = psb_success_
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call psb_erractionsave(err_act)
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select case(what)
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!!$ case(mld_smoother_sweeps_)
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!!$ sm%sweeps = val
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case default
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if (allocated(sm%sv)) then
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call sm%sv%set(what,val,info)
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else
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!!$ write(0,*) trim(name),' Missing component, not setting!'
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!!$ info = 1121
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end if
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end select
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine s_jac_smoother_seti
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subroutine s_jac_smoother_setc(sm,what,val,info)
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use psb_sparse_mod
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Implicit None
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! Arguments
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class(mld_s_jac_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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character(len=*), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act, ival
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character(len=20) :: name='d_jac_smoother_setc'
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info = psb_success_
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call psb_erractionsave(err_act)
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call mld_stringval(val,ival,info)
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if (info == psb_success_) call sm%set(what,ival,info)
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if (info /= psb_success_) then
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info = psb_err_from_subroutine_
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call psb_errpush(info, name)
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine s_jac_smoother_setc
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subroutine s_jac_smoother_setr(sm,what,val,info)
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use psb_sparse_mod
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Implicit None
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! Arguments
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class(mld_s_jac_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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real(psb_spk_), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_jac_smoother_setr'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%set(what,val,info)
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else
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!!$ write(0,*) trim(name),' Missing component, not setting!'
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!!$ info = 1121
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine s_jac_smoother_setr
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subroutine s_jac_smoother_free(sm,info)
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use psb_sparse_mod
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Implicit None
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! Arguments
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class(mld_s_jac_smoother_type), intent(inout) :: sm
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='d_jac_smoother_free'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(sm%sv)) then
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call sm%sv%free(info)
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if (info == psb_success_) deallocate(sm%sv,stat=info)
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if (info /= psb_success_) then
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info = psb_err_alloc_dealloc_
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call psb_errpush(info,name)
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goto 9999
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end if
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end if
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call sm%nd%free()
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine s_jac_smoother_free
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subroutine s_jac_smoother_descr(sm,info,iout)
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use psb_sparse_mod
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Implicit None
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! Arguments
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class(mld_s_jac_smoother_type), intent(in) :: sm
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integer, intent(out) :: info
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integer, intent(in), optional :: iout
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! Local variables
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integer :: err_act
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integer :: ictxt, me, np
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character(len=20), parameter :: name='mld_s_jac_smoother_descr'
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integer :: iout_
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call psb_erractionsave(err_act)
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info = psb_success_
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if (present(iout)) then
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iout_ = iout
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else
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iout_ = 6
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endif
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write(iout_,*) ' Block Jacobi smoother '
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write(iout_,*) ' Local solver:'
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if (allocated(sm%sv)) then
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call sm%sv%descr(info,iout_)
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine s_jac_smoother_descr
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function s_jac_smoother_sizeof(sm) result(val)
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use psb_sparse_mod
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implicit none
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! Arguments
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class(mld_s_jac_smoother_type), intent(in) :: sm
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integer(psb_long_int_k_) :: val
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integer :: i
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val = psb_sizeof_int
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if (allocated(sm%sv)) val = val + sm%sv%sizeof()
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val = val + sm%nd%sizeof()
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return
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end function s_jac_smoother_sizeof
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end module mld_s_jac_smoother
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