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707 lines
20 KiB
Fortran
707 lines
20 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_d_jac_smoother
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use mld_d_prec_type
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type, extends(mld_d_base_smoother_type) :: mld_d_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_d_base_solver_type), allocatable :: sv
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!
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type(psb_dspmat_type) :: nd
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integer :: nnz_nd_tot
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contains
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procedure, pass(sm) :: build => d_jac_smoother_bld
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procedure, pass(sm) :: apply_v => d_jac_smoother_apply_vect
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procedure, pass(sm) :: apply_a => d_jac_smoother_apply
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procedure, pass(sm) :: free => d_jac_smoother_free
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procedure, pass(sm) :: seti => d_jac_smoother_seti
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procedure, pass(sm) :: setc => d_jac_smoother_setc
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procedure, pass(sm) :: setr => d_jac_smoother_setr
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procedure, pass(sm) :: descr => d_jac_smoother_descr
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procedure, pass(sm) :: sizeof => d_jac_smoother_sizeof
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procedure, pass(sm) :: get_nzeros => d_jac_smoother_get_nzeros
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end type mld_d_jac_smoother_type
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private :: d_jac_smoother_bld, d_jac_smoother_apply, &
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& d_jac_smoother_free, d_jac_smoother_seti, &
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& d_jac_smoother_setc, d_jac_smoother_setr,&
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& d_jac_smoother_descr, d_jac_smoother_sizeof, &
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& d_jac_smoother_apply_vect, d_jac_smoother_get_nzeros
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contains
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subroutine d_jac_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
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use psb_base_mod
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_d_jac_smoother_type), intent(inout) :: sm
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type(psb_d_vect_type),intent(inout) :: x
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type(psb_d_vect_type),intent(inout) :: y
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real(psb_dpk_),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_dpk_),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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type(psb_d_vect_type) :: tx, ty
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real(psb_dpk_), pointer :: ww(:), aux(:)
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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')
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case('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 = desc_data%get_local_rows()
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n_col = desc_data%get_local_cols()
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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_dpk_)')
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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_dpk_)')
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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_,&
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& 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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call tx%bld(x%get_nrows(),mold=x%v)
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call tx%set(dzero)
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call ty%bld(x%get_nrows(),mold=x%v)
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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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call psb_geaxpby(done,x,dzero,ty,desc_data,info)
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call psb_spmm(-done,sm%nd,tx,done,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(done,ty,dzero,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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call tx%free(info)
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if (info == psb_success_) call ty%free(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 d_jac_smoother_apply_vect
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subroutine d_jac_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
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use psb_base_mod
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_d_jac_smoother_type), intent(in) :: sm
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real(psb_dpk_),intent(inout) :: x(:)
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real(psb_dpk_),intent(inout) :: y(:)
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real(psb_dpk_),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_dpk_),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_dpk_), 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 = desc_data%get_local_rows()
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n_col = desc_data%get_local_cols()
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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_dpk_)')
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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_dpk_)')
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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_,&
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& 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_dpk_)')
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goto 9999
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end if
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tx = dzero
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ty = dzero
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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(-done,sm%nd,tx,done,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(done,ty,dzero,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 d_jac_smoother_apply
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subroutine d_jac_smoother_bld(a,desc_a,sm,upd,info,amold,vmold)
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use psb_base_mod
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use mld_d_diag_solver
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Implicit None
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! Arguments
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type(psb_dspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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class(mld_d_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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class(psb_d_base_sparse_mat), intent(in), optional :: amold
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class(psb_d_base_vect_type), intent(in), optional :: vmold
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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_dpk_), 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 = desc_a%get_context()
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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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|
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n_row = desc_a%get_local_rows()
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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_d_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_) then
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if (present(amold)) then
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call sm%nd%cscnv(info,&
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& mold=amold,dupl=psb_dupl_add_)
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else
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call sm%nd%cscnv(info,&
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& type='csr',dupl=psb_dupl_add_)
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endif
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end if
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,&
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& a_err='clip & psb_spcnv csr 4')
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goto 9999
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end if
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call sm%sv%build(a,desc_a,upd,info,amold=amold,vmold=vmold)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,&
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& a_err='solver build')
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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 d_jac_smoother_bld
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subroutine d_jac_smoother_seti(sm,what,val,info)
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use psb_base_mod
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Implicit None
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|
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! Arguments
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class(mld_d_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'
|
|
|
|
info = psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
select case(what)
|
|
!!$ case(mld_smoother_sweeps_)
|
|
!!$ sm%sweeps = val
|
|
case default
|
|
if (allocated(sm%sv)) then
|
|
call sm%sv%set(what,val,info)
|
|
else
|
|
!!$ write(0,*) trim(name),' Missing component, not setting!'
|
|
!!$ info = 1121
|
|
end if
|
|
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 d_jac_smoother_seti
|
|
|
|
subroutine d_jac_smoother_setc(sm,what,val,info)
|
|
|
|
use psb_base_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_d_jac_smoother_type), intent(inout) :: sm
|
|
integer, intent(in) :: what
|
|
character(len=*), intent(in) :: val
|
|
integer, intent(out) :: info
|
|
Integer :: err_act, ival
|
|
character(len=20) :: name='d_jac_smoother_setc'
|
|
|
|
info = psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
|
|
call mld_stringval(val,ival,info)
|
|
if (info == psb_success_) call sm%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 d_jac_smoother_setc
|
|
|
|
subroutine d_jac_smoother_setr(sm,what,val,info)
|
|
|
|
use psb_base_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_d_jac_smoother_type), intent(inout) :: sm
|
|
integer, intent(in) :: what
|
|
real(psb_dpk_), intent(in) :: val
|
|
integer, intent(out) :: info
|
|
Integer :: err_act
|
|
character(len=20) :: name='d_jac_smoother_setr'
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
|
|
|
|
if (allocated(sm%sv)) then
|
|
call sm%sv%set(what,val,info)
|
|
else
|
|
!!$ write(0,*) trim(name),' Missing component, not setting!'
|
|
!!$ info = 1121
|
|
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 d_jac_smoother_setr
|
|
|
|
subroutine d_jac_smoother_free(sm,info)
|
|
|
|
use psb_base_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_d_jac_smoother_type), intent(inout) :: sm
|
|
integer, intent(out) :: info
|
|
Integer :: err_act
|
|
character(len=20) :: name='d_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()
|
|
|
|
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 d_jac_smoother_free
|
|
|
|
subroutine d_jac_smoother_descr(sm,info,iout,coarse)
|
|
|
|
use psb_base_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_d_jac_smoother_type), intent(in) :: sm
|
|
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_d_jac_smoother_descr'
|
|
integer :: iout_
|
|
logical :: coarse_
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
if (present(coarse)) then
|
|
coarse_ = coarse
|
|
else
|
|
coarse_ = .false.
|
|
end if
|
|
if (present(iout)) then
|
|
iout_ = iout
|
|
else
|
|
iout_ = 6
|
|
endif
|
|
|
|
if (.not.coarse_) then
|
|
write(iout_,*) ' Block Jacobi smoother '
|
|
write(iout_,*) ' Local solver:'
|
|
end if
|
|
if (allocated(sm%sv)) then
|
|
call sm%sv%descr(info,iout_,coarse=coarse)
|
|
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 d_jac_smoother_descr
|
|
|
|
function d_jac_smoother_sizeof(sm) result(val)
|
|
use psb_base_mod
|
|
implicit none
|
|
! Arguments
|
|
class(mld_d_jac_smoother_type), intent(in) :: sm
|
|
integer(psb_long_int_k_) :: val
|
|
integer :: i
|
|
|
|
val = psb_sizeof_int
|
|
if (allocated(sm%sv)) val = val + sm%sv%sizeof()
|
|
val = val + sm%nd%sizeof()
|
|
|
|
return
|
|
end function d_jac_smoother_sizeof
|
|
|
|
function d_jac_smoother_get_nzeros(sm) result(val)
|
|
use psb_base_mod
|
|
implicit none
|
|
! Arguments
|
|
class(mld_d_jac_smoother_type), intent(in) :: sm
|
|
integer(psb_long_int_k_) :: val
|
|
integer :: i
|
|
|
|
val = 0
|
|
if (allocated(sm%sv)) val = val + sm%sv%get_nzeros()
|
|
val = val + sm%nd%get_nzeros()
|
|
|
|
return
|
|
end function d_jac_smoother_get_nzeros
|
|
|
|
end module mld_d_jac_smoother
|