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607 lines
18 KiB
Fortran
607 lines
18 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_z_ilu_solver
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use mld_z_prec_type
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type, extends(mld_z_base_solver_type) :: mld_z_ilu_solver_type
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type(psb_zspmat_type) :: l, u
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complex(psb_dpk_), allocatable :: d(:)
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integer :: fact_type, fill_in
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real(psb_dpk_) :: thresh
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contains
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procedure, pass(sv) :: build => z_ilu_solver_bld
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procedure, pass(sv) :: apply => z_ilu_solver_apply
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procedure, pass(sv) :: free => z_ilu_solver_free
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procedure, pass(sv) :: seti => z_ilu_solver_seti
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procedure, pass(sv) :: setc => z_ilu_solver_setc
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procedure, pass(sv) :: setr => z_ilu_solver_setr
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procedure, pass(sv) :: descr => z_ilu_solver_descr
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procedure, pass(sv) :: sizeof => z_ilu_solver_sizeof
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end type mld_z_ilu_solver_type
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private :: z_ilu_solver_bld, z_ilu_solver_apply, &
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& z_ilu_solver_free, z_ilu_solver_seti, &
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& z_ilu_solver_setc, z_ilu_solver_setr,&
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& z_ilu_solver_descr, z_ilu_solver_sizeof
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interface mld_ilu0_fact
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subroutine mld_zilu0_fact(ialg,a,l,u,d,info,blck,upd)
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use psb_sparse_mod, only : psb_zspmat_type, psb_dpk_
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integer, intent(in) :: ialg
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integer, intent(out) :: info
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type(psb_zspmat_type),intent(in) :: a
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type(psb_zspmat_type),intent(inout) :: l,u
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type(psb_zspmat_type),intent(in), optional, target :: blck
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character, intent(in), optional :: upd
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complex(psb_dpk_), intent(inout) :: d(:)
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end subroutine mld_zilu0_fact
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end interface
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interface mld_iluk_fact
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subroutine mld_ziluk_fact(fill_in,ialg,a,l,u,d,info,blck)
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use psb_sparse_mod, only : psb_zspmat_type, psb_dpk_
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integer, intent(in) :: fill_in,ialg
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integer, intent(out) :: info
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type(psb_zspmat_type),intent(in) :: a
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type(psb_zspmat_type),intent(inout) :: l,u
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type(psb_zspmat_type),intent(in), optional, target :: blck
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complex(psb_dpk_), intent(inout) :: d(:)
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end subroutine mld_ziluk_fact
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end interface
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interface mld_ilut_fact
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subroutine mld_zilut_fact(fill_in,thres,a,l,u,d,info,blck)
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use psb_sparse_mod, only : psb_zspmat_type, psb_dpk_
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integer, intent(in) :: fill_in
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real(psb_dpk_), intent(in) :: thres
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integer, intent(out) :: info
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type(psb_zspmat_type),intent(in) :: a
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type(psb_zspmat_type),intent(inout) :: l,u
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type(psb_zspmat_type),intent(in), optional, target :: blck
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complex(psb_dpk_), intent(inout) :: d(:)
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end subroutine mld_zilut_fact
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end interface
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character(len=15), parameter, private :: &
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& fact_names(0:4)=(/'none ','DIAG ?? ',&
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& 'ILU(n) ',&
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& 'MILU(n) ','ILU(t,n) '/)
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contains
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subroutine z_ilu_solver_apply(alpha,sv,x,beta,y,desc_data,trans,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_z_ilu_solver_type), intent(in) :: sv
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complex(psb_dpk_),intent(in) :: x(:)
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complex(psb_dpk_),intent(inout) :: y(:)
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complex(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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complex(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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complex(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_ilu_solver_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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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='complex(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='complex(psb_dpk_)')
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goto 9999
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end if
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endif
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select case(trans_)
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case('N')
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call psb_spsm(zone,sv%l,x,zzero,ww,desc_data,info,&
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& trans=trans_,scale='L',diag=sv%d,choice=psb_none_,work=aux)
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if (info == psb_success_) call psb_spsm(alpha,sv%u,ww,beta,y,desc_data,info,&
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& trans=trans_,scale='U',choice=psb_none_, work=aux)
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case('T','C')
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call psb_spsm(zone,sv%u,x,zzero,ww,desc_data,info,&
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& trans=trans_,scale='L',diag=sv%d,choice=psb_none_,work=aux)
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if (info == psb_success_) call psb_spsm(alpha,sv%l,ww,beta,y,desc_data,info,&
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& trans=trans_,scale='U',choice=psb_none_,work=aux)
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case default
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call psb_errpush(psb_err_internal_error_,name,a_err='Invalid TRANS in ILU subsolve')
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goto 9999
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end select
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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 subsolve')
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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 z_ilu_solver_apply
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subroutine z_ilu_solver_bld(a,desc_a,sv,upd,info,b)
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use psb_sparse_mod
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Implicit None
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! Arguments
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type(psb_zspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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class(mld_z_ilu_solver_type), intent(inout) :: sv
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character, intent(in) :: upd
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integer, intent(out) :: info
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type(psb_zspmat_type), intent(in), target, optional :: b
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! Local variables
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integer :: n_row,n_col, nrow_a, nztota
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complex(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_ilu_solver_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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if (psb_toupper(upd) == 'F') then
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nrow_a = a%get_nrows()
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nztota = a%get_nzeros()
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if (present(b)) then
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nztota = nztota + b%get_nzeros()
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end if
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call sv%l%csall(n_row,n_row,info,nztota)
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if (info == psb_success_) call sv%u%csall(n_row,n_row,info,nztota)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_sp_all'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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if (allocated(sv%d)) then
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if (size(sv%d) < n_row) then
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deallocate(sv%d)
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endif
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endif
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if (.not.allocated(sv%d)) then
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allocate(sv%d(n_row),stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
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goto 9999
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end if
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endif
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select case(sv%fact_type)
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case (mld_ilu_t_)
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!
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! ILU(k,t)
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!
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select case(sv%fill_in)
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case(:-1)
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! Error: fill-in <= -1
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call psb_errpush(psb_err_input_value_invalid_i_,name,i_err=(/3,sv%fill_in,0,0,0/))
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goto 9999
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case(0:)
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! Fill-in >= 0
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call mld_ilut_fact(sv%fill_in,sv%thresh,&
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& a, sv%l,sv%u,sv%d,info,blck=b)
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end select
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='mld_ilut_fact'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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case(mld_ilu_n_,mld_milu_n_)
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!
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! ILU(k) and MILU(k)
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!
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select case(sv%fill_in)
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case(:-1)
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! Error: fill-in <= -1
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call psb_errpush(psb_err_input_value_invalid_i_,name,i_err=(/3,sv%fill_in,0,0,0/))
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goto 9999
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case(0)
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! Fill-in 0
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! Separate implementation of ILU(0) for better performance.
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! There seems to be a problem with the separate implementation of MILU(0),
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! contained into mld_ilu0_fact. This must be investigated. For the time being,
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! resort to the implementation of MILU(k) with k=0.
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if (sv%fact_type == mld_ilu_n_) then
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call mld_ilu0_fact(sv%fact_type,a,sv%l,sv%u,&
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& sv%d,info,blck=b,upd=upd)
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else
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call mld_iluk_fact(sv%fill_in,sv%fact_type,&
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& a,sv%l,sv%u,sv%d,info,blck=b)
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endif
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case(1:)
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! Fill-in >= 1
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! The same routine implements both ILU(k) and MILU(k)
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call mld_iluk_fact(sv%fill_in,sv%fact_type,&
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& a,sv%l,sv%u,sv%d,info,blck=b)
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end select
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='mld_iluk_fact'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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case default
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! If we end up here, something was wrong up in the call chain.
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call psb_errpush(psb_err_alloc_dealloc_,name)
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goto 9999
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end select
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else
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! Here we should add checks for reuse of L and U.
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! For the time being just throw an error.
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info = 31
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call psb_errpush(info, name, i_err=(/3,0,0,0,0/),a_err=upd)
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goto 9999
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!
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! What is an update of a factorization??
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! A first attempt could be to reuse EXACTLY the existing indices
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! as if it was an ILU(0) (since, effectively, the sparsity pattern
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! should not grow beyond what is already there).
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!
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call mld_ilu0_fact(sv%fact_type,a,&
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& sv%l,sv%u,&
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& sv%d,info,blck=b,upd=upd)
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end if
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call sv%l%set_asb()
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call sv%l%trim()
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call sv%u%set_asb()
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call sv%u%trim()
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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 z_ilu_solver_bld
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subroutine z_ilu_solver_seti(sv,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_z_ilu_solver_type), intent(inout) :: sv
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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_ilu_solver_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_sub_solve_)
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sv%fact_type = val
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case(mld_sub_fillin_)
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sv%fill_in = val
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case default
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!!$ write(0,*) name,': Error: invalid WHAT'
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!!$ info = -2
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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 z_ilu_solver_seti
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subroutine z_ilu_solver_setc(sv,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_z_ilu_solver_type), intent(inout) :: sv
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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_ilu_solver_setc'
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info = psb_success_
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call psb_erractionsave(err_act)
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|
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call mld_stringval(val,ival,info)
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if (info == psb_success_) call sv%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 z_ilu_solver_setc
|
|
|
|
subroutine z_ilu_solver_setr(sv,what,val,info)
|
|
|
|
use psb_sparse_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_z_ilu_solver_type), intent(inout) :: sv
|
|
integer, intent(in) :: what
|
|
real(psb_dpk_), intent(in) :: val
|
|
integer, intent(out) :: info
|
|
Integer :: err_act
|
|
character(len=20) :: name='d_ilu_solver_setr'
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
|
|
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 z_ilu_solver_setr
|
|
|
|
subroutine z_ilu_solver_free(sv,info)
|
|
|
|
use psb_sparse_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_z_ilu_solver_type), intent(inout) :: sv
|
|
integer, intent(out) :: info
|
|
Integer :: err_act
|
|
character(len=20) :: name='d_ilu_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 sv%l%free()
|
|
call sv%u%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 z_ilu_solver_free
|
|
|
|
subroutine z_ilu_solver_descr(sv,info,iout)
|
|
|
|
use psb_sparse_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_z_ilu_solver_type), intent(in) :: sv
|
|
integer, intent(out) :: info
|
|
integer, intent(in), optional :: iout
|
|
|
|
! Local variables
|
|
integer :: err_act
|
|
integer :: ictxt, me, np
|
|
character(len=20), parameter :: name='mld_z_ilu_solver_descr'
|
|
integer :: iout_
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
if (present(iout)) then
|
|
iout_ = iout
|
|
else
|
|
iout_ = 6
|
|
endif
|
|
|
|
write(iout_,*) ' Incomplete factorization solver: ',&
|
|
& fact_names(sv%fact_type)
|
|
select case(sv%fact_type)
|
|
case(mld_ilu_n_,mld_milu_n_)
|
|
write(iout_,*) ' Fill level:',sv%fill_in
|
|
case(mld_ilu_t_)
|
|
write(iout_,*) ' Fill level:',sv%fill_in
|
|
write(iout_,*) ' Fill threshold :',sv%thresh
|
|
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 z_ilu_solver_descr
|
|
|
|
function z_ilu_solver_sizeof(sv) result(val)
|
|
use psb_sparse_mod
|
|
implicit none
|
|
! Arguments
|
|
class(mld_z_ilu_solver_type), intent(in) :: sv
|
|
integer(psb_long_int_k_) :: val
|
|
integer :: i
|
|
|
|
val = 2*psb_sizeof_int + psb_sizeof_dp
|
|
if (allocated(sv%d)) val = val + 2*psb_sizeof_dp * size(sv%d)
|
|
val = val + psb_sizeof(sv%l)
|
|
val = val + psb_sizeof(sv%u)
|
|
|
|
return
|
|
end function z_ilu_solver_sizeof
|
|
|
|
end module mld_z_ilu_solver
|