mld2p4-2:
mlprec/impl/Makefile mlprec/impl/mld_d_extprol_bld.f90 mlprec/mld_base_prec_type.F90 mlprec/mld_d_prec_mod.f90 Define an externally-specified aggregation,stopcriterion
Salvatore Filippone
9 years ago
parent
66e70fa145
commit
32e344aea4
@ -0,0 +1,519 @@
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!!$
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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 3.3)
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!!$
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!!$ (C) Copyright 2008, 2010, 2012, 2015
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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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! File: mld_d_hierarchy_bld.f90
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!
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! Subroutine: mld_d_hierarchy_bld
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! Version: real
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!
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! This routine builds the preconditioner according to the requirements made by
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! the user trough the subroutines mld_precinit and mld_precset.
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!
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! A multilevel preconditioner is regarded as an array of 'one-level' data structures,
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! each containing the part of the preconditioner associated to a certain level,
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! (for more details see the description of mld_Tonelev_type in mld_prec_type.f90).
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! The levels are numbered in increasing order starting from the finest one, i.e.
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! level 1 is the finest level. No transfer operators are associated to level 1.
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!
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!
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! Arguments:
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! a - type(psb_dspmat_type).
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! The sparse matrix structure containing the local part of the
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! matrix to be preconditioned.
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! desc_a - type(psb_desc_type), input.
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! The communication descriptor of a.
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! p - type(mld_dprec_type), input/output.
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! The preconditioner data structure containing the local part
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! of the preconditioner to be built.
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! info - integer, output.
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! Error code.
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!
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! amold - class(psb_d_base_sparse_mat), input, optional
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! Mold for the inner format of matrices contained in the
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! preconditioner
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!
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!
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! vmold - class(psb_d_base_vect_type), input, optional
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! Mold for the inner format of vectors contained in the
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! preconditioner
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!
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!
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!
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subroutine mld_d_extprol_bld(a,desc_a,p,prolv,restrv,info,amold,vmold,imold)
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use psb_base_mod
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use mld_d_inner_mod
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use mld_d_prec_mod, mld_protect_name => mld_d_extprol_bld
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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_dspmat_type),intent(in), target :: prolv(:)
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type(psb_dspmat_type),intent(in), target :: restrv(:)
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type(psb_desc_type), intent(inout), target :: desc_a
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type(mld_dprec_type),intent(inout),target :: p
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integer(psb_ipk_), 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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class(psb_i_base_vect_type), intent(in), optional :: imold
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! !$ character, intent(in), optional :: upd
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! Local Variables
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integer(psb_ipk_) :: ictxt, me,np
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integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz, casize, nplevs, mxplevs
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integer(psb_ipk_) :: nprolv, nrestrv
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real(psb_dpk_) :: mnaggratio
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integer(psb_ipk_) :: ipv(mld_ifpsz_), val
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class(mld_d_base_smoother_type), allocatable :: coarse_sm, base_sm, med_sm
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type(mld_dml_parms) :: baseparms, medparms, coarseparms
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type(mld_d_onelev_type), allocatable :: tprecv(:)
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integer(psb_ipk_) :: int_err(5)
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character :: upd_
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integer(psb_ipk_) :: debug_level, debug_unit
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character(len=20) :: name, ch_err
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if (psb_get_errstatus().ne.0) return
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info=psb_success_
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err=0
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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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name = 'mld_d_extprol_bld'
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info = psb_success_
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int_err(1) = 0
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ictxt = desc_a%get_context()
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call psb_info(ictxt, me, np)
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p%ictxt = ictxt
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),&
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& 'Entering '
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!
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! For the time being we are commenting out the UPDATE argument
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! we plan to resurrect it later.
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! !$ if (present(upd)) then
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! !$ if (debug_level >= psb_debug_outer_) &
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! !$ & write(debug_unit,*) me,' ',trim(name),'UPD ', upd
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! !$
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! !$ if ((psb_toupper(upd).eq.'F').or.(psb_toupper(upd).eq.'T')) then
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! !$ upd_=psb_toupper(upd)
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! !$ else
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! !$ upd_='F'
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! !$ endif
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! !$ else
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! !$ upd_='F'
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! !$ endif
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upd_ = 'F'
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if (.not.allocated(p%precv)) then
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!! Error: should have called mld_dprecinit
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info=3111
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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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!
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! Check to ensure all procs have the same
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!
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newsz = -1
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casize = p%coarse_aggr_size
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nplevs = p%n_prec_levs
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mxplevs = p%max_prec_levs
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mnaggratio = p%min_aggr_ratio
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casize = p%coarse_aggr_size
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iszv = size(p%precv)
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nprolv = size(prolv)
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nrestrv = size(restrv)
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call psb_bcast(ictxt,iszv)
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call psb_bcast(ictxt,casize)
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call psb_bcast(ictxt,nplevs)
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call psb_bcast(ictxt,mxplevs)
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call psb_bcast(ictxt,mnaggratio)
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call psb_bcast(ictxt,nprolv)
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call psb_bcast(ictxt,nrestrv)
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if (casize /= p%coarse_aggr_size) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent coarse_aggr_size')
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goto 9999
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end if
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if (nplevs /= p%n_prec_levs) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent n_prec_levs')
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goto 9999
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end if
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if (mxplevs /= p%max_prec_levs) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent max_prec_levs')
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goto 9999
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end if
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if (mnaggratio /= p%min_aggr_ratio) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent min_aggr_ratio')
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goto 9999
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end if
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if (iszv /= size(p%precv)) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent size of precv')
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goto 9999
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end if
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if (nprolv /= size(prolv)) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent size of prolv')
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goto 9999
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end if
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if (nrestrv /= size(restrv)) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent size of restrv')
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goto 9999
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end if
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if (nrestrv /= nprolv) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent size prolv vs restrv')
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goto 9999
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end if
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if (iszv <= 1) then
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! We should only ever get here for multilevel.
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info=psb_err_from_subroutine_
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ch_err='size bpv'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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endif
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if (nrestrv < 1) then
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! We should only ever get here for multilevel.
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info=psb_err_from_subroutine_
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ch_err='size restrv'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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endif
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!
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nplevs = nrestrv + 1
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p%n_prec_levs = nplevs
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!
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! Fixed number of levels.
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!
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nplevs = max(itwo,min(nplevs,mxplevs))
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coarseparms = p%precv(iszv)%parms
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baseparms = p%precv(1)%parms
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medparms = p%precv(2)%parms
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allocate(coarse_sm, source=p%precv(iszv)%sm,stat=info)
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if (info == psb_success_) &
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& allocate(med_sm, source=p%precv(2)%sm,stat=info)
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if (info == psb_success_) &
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& allocate(base_sm, source=p%precv(1)%sm,stat=info)
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if (info /= psb_success_) then
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write(0,*) 'Error in saving smoothers',info
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call psb_errpush(psb_err_internal_error_,name,a_err='Base level precbuild.')
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goto 9999
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end if
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if (iszv /= nplevs) then
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allocate(tprecv(nplevs),stat=info)
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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='prec reallocation')
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goto 9999
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endif
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tprecv(1)%parms = baseparms
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allocate(tprecv(1)%sm,source=base_sm,stat=info)
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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='prec reallocation')
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goto 9999
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endif
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do i=2,nplevs-1
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tprecv(i)%parms = medparms
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allocate(tprecv(i)%sm,source=med_sm,stat=info)
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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='prec reallocation')
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goto 9999
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endif
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end do
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tprecv(nplevs)%parms = coarseparms
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allocate(tprecv(nplevs)%sm,source=coarse_sm,stat=info)
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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='prec reallocation')
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goto 9999
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endif
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do i=1,iszv
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call p%precv(i)%free(info)
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end do
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call move_alloc(tprecv,p%precv)
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iszv = size(p%precv)
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end if
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!
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! Finest level first; remember to fix base_a and base_desc
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!
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p%precv(1)%base_a => a
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p%precv(1)%base_desc => desc_a
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newsz = 0
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array_build_loop: do i=2, iszv
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!
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! Sanity checks on the parameters
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!
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if (i<iszv) then
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!
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! A replicated matrix only makes sense at the coarsest level
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!
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call mld_check_def(p%precv(i)%parms%coarse_mat,'Coarse matrix',&
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& mld_distr_mat_,is_distr_ml_coarse_mat)
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end if
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call mld_d_bld_extaggr(p%precv(i-1)%base_a,&
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& p%precv(i-1)%base_desc,p%precv(i),restrv(i-1),prolv(i-1),info)
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if (i>2) then
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if (all(p%precv(i)%map%naggr == p%precv(i-1)%map%naggr)) then
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newsz=i-1
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end if
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call psb_bcast(ictxt,newsz)
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if (newsz > 0) exit array_build_loop
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end if
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end do array_build_loop
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,&
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& a_err='Internal hierarchy build' )
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goto 9999
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endif
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iszv = size(p%precv)
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),&
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& 'Exiting with',iszv,' levels'
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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contains
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subroutine mld_d_extaggr_bld(a,desc_a,p,op_restr,op_prol,info)
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use psb_base_mod
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use mld_d_inner_mod
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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_dspmat_type), intent(inout) :: op_restr,op_prol
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type(psb_desc_type), intent(in), target :: desc_a
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type(mld_d_onelev_type), intent(inout),target :: p
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integer(psb_ipk_), intent(out) :: info
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! Local variables
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character(len=20) :: name
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integer(psb_mpik_) :: ictxt, np, me, ncol
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integer(psb_ipk_) :: err_act,ntaggr,nzl
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integer(psb_ipk_), allocatable :: ilaggr(:), nlaggr(:)
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type(psb_dspmat_type) :: ac, am3, am4
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type(psb_d_coo_sparse_mat) :: acoo, bcoo
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type(psb_d_csr_sparse_mat) :: acsr1
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name='mld_d_extaggr_bld'
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if (psb_get_errstatus().ne.0) return
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call psb_erractionsave(err_act)
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info = psb_success_
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ictxt = desc_a%get_context()
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call psb_info(ictxt,me,np)
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allocate(nlaggr(np),ilaggr(1))
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nlaggr = 0
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ilaggr = 0
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p%parms%aggr_alg = mld_ext_aggr_
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call mld_check_def(p%parms%ml_type,'Multilevel type',&
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& mld_mult_ml_,is_legal_ml_type)
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call mld_check_def(p%parms%coarse_mat,'Coarse matrix',&
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& mld_distr_mat_,is_legal_ml_coarse_mat)
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nlaggr(me+1) = op_restr%get_nrows()
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if (op_restr%get_nrows() /= op_prol%get_ncols()) then
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err='Inconsistent restr/prol sizes')
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goto 9999
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end if
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call psb_sum(ictxt,nlaggr)
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ntaggr = sum(nlaggr)
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ncol = desc_a%get_local_cols()
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!
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! Compute local part of AC
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!
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call psb_spspmm(a,op_prol,am3,info)
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if(info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='spspmm 2')
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goto 9999
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end if
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call psb_sphalo(am3,desc_a,am4,info,&
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& colcnv=.false.,rowscale=.true.)
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if (info == psb_success_) call psb_rwextd(ncol,am3,info,b=am4)
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if (info == psb_success_) call am4%free()
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if(info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,a_err='Extend am3')
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goto 9999
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end if
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call psb_spspmm(op_restr,am3,ac,info)
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if (info == psb_success_) call am3%free()
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if (info == psb_success_) call ac%cscnv(info,type='csr',dupl=psb_dupl_add_)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,a_err='Build ac = op_restr x am3')
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goto 9999
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end if
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select case(p%parms%coarse_mat)
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|
||||
case(mld_distr_mat_)
|
||||
|
||||
call ac%mv_to(bcoo)
|
||||
if (p%parms%clean_zeros) call bcoo%clean_zeros(info)
|
||||
nzl = bcoo%get_nzeros()
|
||||
|
||||
if (info == psb_success_) call psb_cdall(ictxt,p%desc_ac,info,nl=nlaggr(me+1))
|
||||
if (info == psb_success_) call psb_cdins(nzl,bcoo%ia,bcoo%ja,p%desc_ac,info)
|
||||
if (info == psb_success_) call psb_cdasb(p%desc_ac,info)
|
||||
if (info == psb_success_) call psb_glob_to_loc(bcoo%ia(1:nzl),p%desc_ac,info,iact='I')
|
||||
if (info == psb_success_) call psb_glob_to_loc(bcoo%ja(1:nzl),p%desc_ac,info,iact='I')
|
||||
if (info /= psb_success_) then
|
||||
call psb_errpush(psb_err_internal_error_,name,&
|
||||
& a_err='Creating p%desc_ac and converting ac')
|
||||
goto 9999
|
||||
end if
|
||||
if (debug_level >= psb_debug_outer_) &
|
||||
& write(debug_unit,*) me,' ',trim(name),&
|
||||
& 'Assembld aux descr. distr.'
|
||||
call p%ac%mv_from(bcoo)
|
||||
|
||||
call p%ac%set_nrows(p%desc_ac%get_local_rows())
|
||||
call p%ac%set_ncols(p%desc_ac%get_local_cols())
|
||||
call p%ac%set_asb()
|
||||
|
||||
if (info /= psb_success_) then
|
||||
call psb_errpush(psb_err_from_subroutine_,name,a_err='psb_sp_free')
|
||||
goto 9999
|
||||
end if
|
||||
|
||||
if (np>1) then
|
||||
call op_prol%mv_to(acsr1)
|
||||
nzl = acsr1%get_nzeros()
|
||||
call psb_glob_to_loc(acsr1%ja(1:nzl),p%desc_ac,info,'I')
|
||||
if(info /= psb_success_) then
|
||||
call psb_errpush(psb_err_from_subroutine_,name,a_err='psb_glob_to_loc')
|
||||
goto 9999
|
||||
end if
|
||||
call op_prol%mv_from(acsr1)
|
||||
endif
|
||||
call op_prol%set_ncols(p%desc_ac%get_local_cols())
|
||||
|
||||
if (np>1) then
|
||||
call op_restr%cscnv(info,type='coo',dupl=psb_dupl_add_)
|
||||
call op_restr%mv_to(acoo)
|
||||
nzl = acoo%get_nzeros()
|
||||
if (info == psb_success_) call psb_glob_to_loc(acoo%ia(1:nzl),p%desc_ac,info,'I')
|
||||
call acoo%set_dupl(psb_dupl_add_)
|
||||
if (info == psb_success_) call op_restr%mv_from(acoo)
|
||||
if (info == psb_success_) call op_restr%cscnv(info,type='csr')
|
||||
if(info /= psb_success_) then
|
||||
call psb_errpush(psb_err_internal_error_,name,&
|
||||
& a_err='Converting op_restr to local')
|
||||
goto 9999
|
||||
end if
|
||||
end if
|
||||
call op_restr%set_nrows(p%desc_ac%get_local_cols())
|
||||
|
||||
if (debug_level >= psb_debug_outer_) &
|
||||
& write(debug_unit,*) me,' ',trim(name),&
|
||||
& 'Done ac '
|
||||
|
||||
case(mld_repl_mat_)
|
||||
!
|
||||
!
|
||||
call psb_cdall(ictxt,p%desc_ac,info,mg=ntaggr,repl=.true.)
|
||||
if (info == psb_success_) call psb_cdasb(p%desc_ac,info)
|
||||
if ((info == psb_success_).and.p%parms%clean_zeros) call ac%clean_zeros(info)
|
||||
if (info == psb_success_) &
|
||||
& call psb_gather(p%ac,ac,p%desc_ac,info,dupl=psb_dupl_add_,keeploc=.false.)
|
||||
|
||||
if (info /= psb_success_) goto 9999
|
||||
|
||||
case default
|
||||
info = psb_err_internal_error_
|
||||
call psb_errpush(info,name,a_err='invalid mld_coarse_mat_')
|
||||
goto 9999
|
||||
end select
|
||||
|
||||
call p%ac%cscnv(info,type='csr',dupl=psb_dupl_add_)
|
||||
if(info /= psb_success_) then
|
||||
call psb_errpush(psb_err_from_subroutine_,name,a_err='spcnv')
|
||||
goto 9999
|
||||
end if
|
||||
|
||||
!
|
||||
! Copy the prolongation/restriction matrices into the descriptor map.
|
||||
! op_restr => PR^T i.e. restriction operator
|
||||
! op_prol => PR i.e. prolongation operator
|
||||
!
|
||||
|
||||
p%map = psb_linmap(psb_map_aggr_,desc_a,&
|
||||
& p%desc_ac,op_restr,op_prol,ilaggr,nlaggr)
|
||||
if(info /= psb_success_) then
|
||||
call psb_errpush(psb_err_from_subroutine_,name,a_err='sp_Free')
|
||||
goto 9999
|
||||
end if
|
||||
|
||||
call psb_erractionrestore(err_act)
|
||||
return
|
||||
|
||||
9999 call psb_error_handler(err_act)
|
||||
|
||||
return
|
||||
end subroutine mld_d_extaggr_bld
|
||||
|
||||
end subroutine mld_d_extprol_bld
|
||||
Loading…
Reference in New Issue