You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
408 lines
14 KiB
Fortran
408 lines
14 KiB
Fortran
!!$
|
|
!!$
|
|
!!$ MLD2P4 version 2.0
|
|
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
|
|
!!$
|
|
!!$ (C) Copyright 2008,2009,2010
|
|
!!$
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$ Pasqua D'Ambra ICAR-CNR, Naples
|
|
!!$ Daniela di Serafino Second University of Naples
|
|
!!$
|
|
!!$ Redistribution and use in source and binary forms, with or without
|
|
!!$ modification, are permitted provided that the following conditions
|
|
!!$ are met:
|
|
!!$ 1. Redistributions of source code must retain the above copyright
|
|
!!$ notice, this list of conditions and the following disclaimer.
|
|
!!$ 2. Redistributions in binary form must reproduce the above copyright
|
|
!!$ notice, this list of conditions, and the following disclaimer in the
|
|
!!$ documentation and/or other materials provided with the distribution.
|
|
!!$ 3. The name of the MLD2P4 group or the names of its contributors may
|
|
!!$ not be used to endorse or promote products derived from this
|
|
!!$ software without specific written permission.
|
|
!!$
|
|
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
|
|
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
!!$ POSSIBILITY OF SUCH DAMAGE.
|
|
!!$
|
|
!!$
|
|
! File: mld_dmlprec_bld.f90
|
|
!
|
|
! Subroutine: mld_dmlprec_bld
|
|
! Version: real
|
|
!
|
|
! This routine builds the preconditioner according to the requirements made by
|
|
! the user trough the subroutines mld_precinit and mld_precset.
|
|
!
|
|
! A multilevel preconditioner is regarded as an array of 'one-level' data structures,
|
|
! each containing the part of the preconditioner associated to a certain level,
|
|
! (for more details see the description of mld_Tonelev_type in mld_prec_type.f90).
|
|
! The levels are numbered in increasing order starting from the finest one, i.e.
|
|
! level 1 is the finest level. No transfer operators are associated to level 1.
|
|
!
|
|
!
|
|
! Arguments:
|
|
! a - type(psb_dspmat_type).
|
|
! The sparse matrix structure containing the local part of the
|
|
! matrix to be preconditioned.
|
|
! desc_a - type(psb_desc_type), input.
|
|
! The communication descriptor of a.
|
|
! p - type(mld_dprec_type), input/output.
|
|
! The preconditioner data structure containing the local part
|
|
! of the preconditioner to be built.
|
|
! info - integer, output.
|
|
! Error code.
|
|
!
|
|
subroutine mld_dmlprec_bld(a,desc_a,p,info,amold,vmold)
|
|
|
|
use psb_base_mod
|
|
use mld_d_inner_mod, mld_protect_name => mld_dmlprec_bld
|
|
use mld_d_prec_mod
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
type(psb_dspmat_type),intent(in), target :: a
|
|
type(psb_desc_type), intent(in), target :: desc_a
|
|
type(mld_dprec_type),intent(inout),target :: p
|
|
integer, intent(out) :: info
|
|
class(psb_d_base_sparse_mat), intent(in), optional :: amold
|
|
class(psb_d_base_vect_type), intent(in), optional :: vmold
|
|
!!$ character, intent(in), optional :: upd
|
|
|
|
! Local Variables
|
|
type(mld_dprec_type) :: t_prec
|
|
Integer :: err,i,k,ictxt, me,np, err_act, iszv, newsz
|
|
integer :: ipv(mld_ifpsz_), val
|
|
integer :: int_err(5)
|
|
character :: upd_
|
|
type(mld_dml_parms) :: prm
|
|
integer :: debug_level, debug_unit
|
|
character(len=20) :: name, ch_err
|
|
|
|
if (psb_get_errstatus().ne.0) return
|
|
info=psb_success_
|
|
err=0
|
|
call psb_erractionsave(err_act)
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
|
|
name = 'mld_dmlprec_bld'
|
|
info = psb_success_
|
|
int_err(1) = 0
|
|
ictxt = desc_a%get_context()
|
|
call psb_info(ictxt, me, np)
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Entering '
|
|
!
|
|
! For the time being we are commenting out the UPDATE argument
|
|
! we plan to resurrect it later.
|
|
!!$ if (present(upd)) then
|
|
!!$ if (debug_level >= psb_debug_outer_) &
|
|
!!$ & write(debug_unit,*) me,' ',trim(name),'UPD ', upd
|
|
!!$
|
|
!!$ if ((psb_toupper(upd).eq.'F').or.(psb_toupper(upd).eq.'T')) then
|
|
!!$ upd_=psb_toupper(upd)
|
|
!!$ else
|
|
!!$ upd_='F'
|
|
!!$ endif
|
|
!!$ else
|
|
!!$ upd_='F'
|
|
!!$ endif
|
|
upd_ = 'F'
|
|
|
|
if (.not.allocated(p%precv)) then
|
|
!! Error: should have called mld_dprecinit
|
|
info=3111
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
!
|
|
! Check to ensure all procs have the same
|
|
!
|
|
newsz = -1
|
|
iszv = size(p%precv)
|
|
call psb_bcast(ictxt,iszv)
|
|
if (iszv /= size(p%precv)) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='Inconsistent size of precv')
|
|
goto 9999
|
|
end if
|
|
|
|
if (iszv <= 1) then
|
|
! We should only ever get here for multilevel.
|
|
info=psb_err_from_subroutine_
|
|
ch_err='size bpv'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
endif
|
|
|
|
|
|
if (iszv > 1) then
|
|
|
|
!
|
|
! Build the matrix and the transfer operators corresponding
|
|
! to the remaining levels
|
|
!
|
|
!
|
|
! Check on the iprcparm contents: they should be the same
|
|
! on all processes.
|
|
!
|
|
call psb_bcast(ictxt,p%precv(1)%parms)
|
|
!
|
|
! Finest level first; remember to fix base_a and base_desc
|
|
!
|
|
p%precv(1)%base_a => a
|
|
p%precv(1)%base_desc => desc_a
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Base level precbuild.')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
do i=2, iszv
|
|
!
|
|
! Check on the iprcparm contents: they should be the same
|
|
! on all processes.
|
|
!
|
|
call psb_bcast(ictxt,p%precv(1)%parms)
|
|
|
|
!
|
|
! Sanity checks on the parameters
|
|
!
|
|
if (i<iszv) then
|
|
!
|
|
! A replicated matrix only makes sense at the coarsest level
|
|
!
|
|
call mld_check_def(p%precv(i)%parms%coarse_mat,'Coarse matrix',&
|
|
& mld_distr_mat_,is_distr_ml_coarse_mat)
|
|
|
|
else if (i == iszv) then
|
|
|
|
!!$ call check_coarse_lev(p%precv(i))
|
|
|
|
end if
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Calling mlprcbld at level ',i
|
|
!
|
|
! Build the mapping between levels i-1 and i and the matrix
|
|
! at level i
|
|
!
|
|
if (info == psb_success_) call mld_coarse_bld(p%precv(i-1)%base_a,&
|
|
& p%precv(i-1)%base_desc, p%precv(i),info)
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Init upper level preconditioner')
|
|
goto 9999
|
|
endif
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Return from ',i,' call to mlprcbld ',info
|
|
|
|
if (i>2) then
|
|
if (all(p%precv(i)%map%naggr == p%precv(i-1)%map%naggr)) then
|
|
newsz=i-1
|
|
end if
|
|
call psb_bcast(ictxt,newsz)
|
|
if (newsz > 0) exit
|
|
end if
|
|
end do
|
|
|
|
if (newsz > 0) then
|
|
if (me == 0) then
|
|
write(debug_unit,*) trim(name),&
|
|
&': Warning: aggregates from level ',&
|
|
& newsz
|
|
write(debug_unit,*) trim(name),&
|
|
&': to level ',&
|
|
& iszv,' coincide.'
|
|
write(debug_unit,*) trim(name),&
|
|
&': Number of levels actually used :',newsz
|
|
write(debug_unit,*)
|
|
end if
|
|
allocate(t_prec%precv(newsz),stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,&
|
|
& a_err='prec reallocation')
|
|
goto 9999
|
|
endif
|
|
do i=1,newsz-1
|
|
call mld_move_alloc(p%precv(i),t_prec%precv(i),info)
|
|
end do
|
|
call mld_move_alloc(p%precv(iszv),t_prec%precv(newsz),info)
|
|
do i=newsz+1, iszv
|
|
call mld_precfree(p%precv(i),info)
|
|
end do
|
|
call mld_move_alloc(t_prec,p,info)
|
|
! Ignore errors from transfer
|
|
info = psb_success_
|
|
!
|
|
! Restart
|
|
iszv = newsz
|
|
! Fix the pointers, but the level 1 should
|
|
! be already OK
|
|
do i=2, iszv - 1
|
|
p%precv(i)%base_a => p%precv(i)%ac
|
|
p%precv(i)%base_desc => p%precv(i)%desc_ac
|
|
p%precv(i)%map%p_desc_X => p%precv(i-1)%base_desc
|
|
p%precv(i)%map%p_desc_Y => p%precv(i)%base_desc
|
|
end do
|
|
|
|
|
|
i = iszv
|
|
call check_coarse_lev(p%precv(i))
|
|
if (info == psb_success_) call mld_coarse_bld(p%precv(i-1)%base_a,&
|
|
& p%precv(i-1)%base_desc, p%precv(i),info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='coarse rebuild')
|
|
goto 9999
|
|
endif
|
|
end if
|
|
end if
|
|
|
|
do i=1, iszv
|
|
!
|
|
! build the base preconditioner at level i
|
|
!
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Calling mlprcbld at level ',i
|
|
call mld_check_def(p%precv(i)%parms%sweeps,&
|
|
& 'Jacobi sweeps',1,is_legal_jac_sweeps)
|
|
call mld_check_def(p%precv(i)%parms%sweeps_pre,&
|
|
& 'Jacobi sweeps',1,is_legal_jac_sweeps)
|
|
call mld_check_def(p%precv(i)%parms%sweeps_post,&
|
|
& 'Jacobi sweeps',1,is_legal_jac_sweeps)
|
|
|
|
if (.not.allocated(p%precv(i)%sm)) then
|
|
!! Error: should have called mld_dprecinit
|
|
info=3111
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
if (.not.allocated(p%precv(i)%sm%sv)) then
|
|
!! Error: should have called mld_dprecinit
|
|
info=3111
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
!
|
|
! Test version for beginning of OO stuff.
|
|
!
|
|
call p%precv(i)%sm%build(p%precv(i)%base_a,p%precv(i)%base_desc,&
|
|
& 'F',info,amold=amold,vmold=vmold)
|
|
|
|
if ((info == psb_success_).and.(i>1).and.(present(amold))) then
|
|
call psb_map_cscnv(p%precv(i)%map,info,mold=amold)
|
|
call p%precv(i)%ac%cscnv(info,mold=amold)
|
|
end if
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='One level preconditioner build.')
|
|
goto 9999
|
|
endif
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Return from ',i,' call to mlprcbld ',info
|
|
end do
|
|
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act.eq.psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
contains
|
|
|
|
subroutine check_coarse_lev(prec)
|
|
type(mld_donelev_type) :: prec
|
|
|
|
!
|
|
! At the coarsest level, check mld_coarse_solve_
|
|
!
|
|
!!$ val = prec%parms%coarse_solve
|
|
!!$ select case (val)
|
|
!!$ case(mld_jac_)
|
|
!!$
|
|
!!$ if (prec%prec%iprcparm(mld_sub_solve_) /= mld_diag_scale_) then
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & 'Warning: inconsistent coarse level specification.'
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & ' Resetting according to the value specified for mld_coarse_solve_.'
|
|
!!$ prec%prec%iprcparm(mld_sub_solve_) = mld_diag_scale_
|
|
!!$ end if
|
|
!!$ prec%prec%iprcparm(mld_smoother_type_) = mld_jac_
|
|
!!$
|
|
!!$ case(mld_bjac_)
|
|
!!$
|
|
!!$ if ((prec%prec%iprcparm(mld_sub_solve_) == mld_diag_scale_).or.&
|
|
!!$ & ( prec%prec%iprcparm(mld_smoother_type_) /= mld_bjac_)) then
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & 'Warning: inconsistent coarse level specification.'
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & ' Resetting according to the value specified for mld_coarse_solve_.'
|
|
!!$! !$#if defined(HAVE_UMF_)
|
|
!!$! !$ prec%prec%iprcparm(mld_sub_solve_) = mld_umf_
|
|
!!$! !$#elif defined(HAVE_SLU_)
|
|
!!$! !$ prec%prec%iprcparm(mld_sub_solve_) = mld_slu_
|
|
!!$! !$#else
|
|
!!$ prec%prec%iprcparm(mld_sub_solve_) = mld_ilu_n_
|
|
!!$! !$#endif
|
|
!!$ end if
|
|
!!$ prec%prec%iprcparm(mld_smoother_type_) = mld_bjac_
|
|
!!$
|
|
!!$ case(mld_umf_, mld_slu_)
|
|
!!$ if ((prec%iprcparm(mld_coarse_mat_) /= mld_repl_mat_).or.&
|
|
!!$ & (prec%prec%iprcparm(mld_sub_solve_) /= val)) then
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & 'Warning: inconsistent coarse level specification.'
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & ' Resetting according to the value specified for mld_coarse_solve_.'
|
|
!!$ prec%iprcparm(mld_coarse_mat_) = mld_repl_mat_
|
|
!!$ prec%prec%iprcparm(mld_sub_solve_) = val
|
|
!!$ prec%prec%iprcparm(mld_smoother_type_) = mld_bjac_
|
|
!!$ end if
|
|
!!$ case(mld_sludist_)
|
|
!!$ if ((prec%iprcparm(mld_coarse_mat_) /= mld_distr_mat_).or.&
|
|
!!$ & (prec%prec%iprcparm(mld_sub_solve_) /= val)) then
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & 'Warning: inconsistent coarse level specification.'
|
|
!!$ if (me == 0) write(debug_unit,*)&
|
|
!!$ & ' Resetting according to the value specified for mld_coarse_solve_.'
|
|
!!$ prec%iprcparm(mld_coarse_mat_) = mld_distr_mat_
|
|
!!$ prec%prec%iprcparm(mld_sub_solve_) = val
|
|
!!$ prec%prec%iprcparm(mld_smoother_type_) = mld_bjac_
|
|
!!$ prec%prec%iprcparm(mld_smoother_sweeps_) = 1
|
|
!!$ end if
|
|
!!$ end select
|
|
end subroutine check_coarse_lev
|
|
|
|
end subroutine mld_dmlprec_bld
|