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555 lines
20 KiB
Fortran
555 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
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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_cprecset.f90
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!
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! Subroutine: mld_cprecseti
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! Version: complex
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!
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! This routine sets the integer parameters defining the preconditioner. More
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! precisely, the integer parameter identified by 'what' is assigned the value
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! contained in 'val'.
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! For the multilevel preconditioners, the levels are numbered in increasing
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! order starting from the finest one, i.e. level 1 is the finest level.
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!
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! To set character and real parameters, see mld_cprecsetc and mld_cprecsetr,
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! respectively.
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!
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!
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! Arguments:
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! p - type(mld_cprec_type), input/output.
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! The preconditioner data structure.
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! what - integer, input.
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! The number identifying the parameter to be set.
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! A mnemonic constant has been associated to each of these
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! numbers, as reported in the MLD2P4 User's and Reference Guide.
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! val - integer, input.
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! The value of the parameter to be set. The list of allowed
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! values is reported in the MLD2P4 User's and Reference Guide.
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! info - integer, output.
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! Error code.
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! ilev - integer, optional, input.
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! For the multilevel preconditioner, the level at which the
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! preconditioner parameter has to be set.
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! If nlev is not present, the parameter identified by 'what'
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! is set at all the appropriate levels.
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!
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! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to
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! MLD2P4 developers. Indeed, by using ilev it is possible to set different values
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! of the same parameter at different levels 1,...,nlev-1, even in cases where
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! the parameter must have the same value at all the levels but the coarsest one.
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! For this reason, the interface mld_precset to this routine has been built in
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! such a way that ilev is not visible to the user (see mld_prec_mod.f90).
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!
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subroutine mld_cprecseti(p,what,val,info,ilev)
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use psb_sparse_mod
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use mld_prec_mod, mld_protect_name => mld_cprecseti
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implicit none
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! Arguments
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type(mld_cprec_type), intent(inout) :: p
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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, optional, intent(in) :: ilev
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! Local variables
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integer :: ilev_, nlev_
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character(len=*), parameter :: name='mld_precseti'
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info = psb_success_
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if (.not.allocated(p%precv)) then
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info = 3111
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write(0,*) name,': Error: uninitialized preconditioner, should call MLD_PRECINIT'
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return
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endif
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nlev_ = size(p%precv)
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if (present(ilev)) then
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ilev_ = ilev
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else
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ilev_ = 1
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end if
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if ((ilev_<1).or.(ilev_ > nlev_)) then
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info = -1
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write(0,*) name,': Error: invalid ILEV/NLEV combination',ilev_, nlev_
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return
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endif
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if (.not.allocated(p%precv(ilev_)%iprcparm)) then
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info = 3111
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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return
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endif
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if (.not.allocated(p%precv(ilev_)%prec%iprcparm)) then
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info = 3111
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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return
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endif
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!
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! Set preconditioner parameters at level ilev.
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!
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if (present(ilev)) then
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if (ilev_ == 1) then
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!
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! Rules for fine level are slightly different.
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!
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select case(what)
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case(mld_smoother_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,&
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& mld_sub_ren_,mld_sub_ovr_,mld_sub_fillin_,mld_smoother_sweeps_)
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p%precv(ilev_)%prec%iprcparm(what) = 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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else if (ilev_ > 1) then
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select case(what)
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case(mld_smoother_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,&
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& mld_sub_ren_,mld_sub_ovr_,mld_sub_fillin_,&
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& mld_smoother_sweeps_)
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p%precv(ilev_)%prec%iprcparm(what) = val
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case(mld_ml_type_,mld_aggr_alg_,mld_aggr_kind_,&
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& mld_smoother_pos_,mld_aggr_omega_alg_,mld_aggr_eig_)
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p%precv(ilev_)%iprcparm(what) = val
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case(mld_coarse_mat_)
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if (ilev_ /= nlev_ .and. val /= mld_distr_mat_) then
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write(0,*) name,': Error: Inconsistent specification of WHAT vs. ILEV'
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info = -2
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return
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end if
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p%precv(ilev_)%iprcparm(mld_coarse_mat_) = val
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case(mld_coarse_subsolve_)
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if (ilev_ /= nlev_) then
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write(0,*) name,': Error: Inconsistent specification of WHAT vs. ILEV'
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info = -2
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return
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end if
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p%precv(ilev_)%iprcparm(mld_sub_solve_) = val
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case(mld_coarse_solve_)
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if (ilev_ /= nlev_) then
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write(0,*) name,': Error: Inconsistent specification of WHAT vs. ILEV'
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info = -2
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return
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end if
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if (nlev_ > 1) then
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p%precv(nlev_)%iprcparm(mld_coarse_solve_) = val
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p%precv(nlev_)%prec%iprcparm(mld_smoother_type_) = mld_bjac_
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p%precv(nlev_)%iprcparm(mld_coarse_mat_) = mld_distr_mat_
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select case (val)
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case(mld_umf_, mld_slu_)
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p%precv(nlev_)%iprcparm(mld_coarse_mat_) = mld_repl_mat_
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p%precv(nlev_)%prec%iprcparm(mld_sub_solve_) = val
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case(mld_sludist_)
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p%precv(nlev_)%prec%iprcparm(mld_sub_solve_) = val
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end select
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endif
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case(mld_coarse_sweeps_)
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if (ilev_ /= nlev_) then
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write(0,*) name,': Error: Inconsistent specification of WHAT vs. ILEV'
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info = -2
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return
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end if
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p%precv(ilev_)%prec%iprcparm(mld_smoother_sweeps_) = val
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case(mld_coarse_fillin_)
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if (ilev_ /= nlev_) then
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write(0,*) name,': Error: Inconsistent specification of WHAT vs. ILEV'
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info = -2
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return
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end if
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p%precv(ilev_)%prec%iprcparm(mld_sub_fillin_) = 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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endif
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else if (.not.present(ilev)) then
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!
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! ilev not specified: set preconditioner parameters at all the appropriate
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! levels
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!
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select case(what)
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case(mld_smoother_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,&
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& mld_sub_ren_,mld_sub_ovr_,mld_sub_fillin_,&
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& mld_smoother_sweeps_)
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do ilev_=1,max(1,nlev_-1)
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if (.not.allocated(p%precv(ilev_)%iprcparm)) then
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = -1
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return
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endif
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p%precv(ilev_)%prec%iprcparm(what) = val
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end do
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case(mld_ml_type_,mld_aggr_alg_,mld_aggr_kind_,&
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& mld_smoother_pos_,mld_aggr_omega_alg_,mld_aggr_eig_)
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do ilev_=2,nlev_
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if (.not.allocated(p%precv(ilev_)%iprcparm)) then
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = -1
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return
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endif
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p%precv(ilev_)%iprcparm(what) = val
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end do
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case(mld_coarse_mat_)
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if (.not.allocated(p%precv(nlev_)%iprcparm)) then
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write(0,*) name,&
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& ': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = -1
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return
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endif
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if (nlev_ > 1) p%precv(nlev_)%iprcparm(mld_coarse_mat_) = val
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case(mld_coarse_solve_)
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if (.not.allocated(p%precv(nlev_)%iprcparm)) then
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = -1
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return
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endif
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if (nlev_ > 1) then
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p%precv(nlev_)%iprcparm(mld_coarse_solve_) = val
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p%precv(nlev_)%prec%iprcparm(mld_smoother_type_) = mld_bjac_
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p%precv(nlev_)%iprcparm(mld_coarse_mat_) = mld_distr_mat_
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select case (val)
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case(mld_umf_, mld_slu_)
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p%precv(nlev_)%iprcparm(mld_coarse_mat_) = mld_repl_mat_
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p%precv(nlev_)%prec%iprcparm(mld_sub_solve_) = val
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case(mld_sludist_)
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p%precv(nlev_)%prec%iprcparm(mld_sub_solve_) = val
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end select
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endif
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case(mld_coarse_subsolve_)
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if (.not.allocated(p%precv(nlev_)%iprcparm)) then
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = -1
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return
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end if
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if (nlev_ > 1) p%precv(nlev_)%prec%iprcparm(mld_sub_solve_) = val
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case(mld_coarse_sweeps_)
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if (.not.allocated(p%precv(nlev_)%iprcparm)) then
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = -1
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return
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endif
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if (nlev_ > 1) p%precv(nlev_)%prec%iprcparm(mld_smoother_sweeps_) = val
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case(mld_coarse_fillin_)
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if (.not.allocated(p%precv(nlev_)%iprcparm)) then
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write(0,*) name,&
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&': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = -1
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return
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endif
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if (nlev_ > 1) p%precv(nlev_)%prec%iprcparm(mld_sub_fillin_) = 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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endif
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end subroutine mld_cprecseti
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!
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! Subroutine: mld_cprecsetc
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! Version: complex
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!
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! This routine sets the character parameters defining the preconditioner. More
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! precisely, the character parameter identified by 'what' is assigned the value
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! contained in 'val'.
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! For the multilevel preconditioners, the levels are numbered in increasing
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! order starting from the finest one, i.e. level 1 is the finest level.
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!
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! To set integer and real parameters, see mld_cprecseti and mld_cprecsetr,
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! respectively.
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!
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!
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! Arguments:
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! p - type(mld_cprec_type), input/output.
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! The preconditioner data structure.
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! what - integer, input.
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! The number identifying the parameter to be set.
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! A mnemonic constant has been associated to each of these
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! numbers, as reported in the MLD2P4 User's and Reference Guide.
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! string - character(len=*), input.
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! The value of the parameter to be set. The list of allowed
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! values is reported in the MLD2P4 User's and Reference Guide.
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! info - integer, output.
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! Error code.
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! ilev - integer, optional, input.
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! For the multilevel preconditioner, the level at which the
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! preconditioner parameter has to be set.
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! If nlev is not present, the parameter identified by 'what'
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! is set at all the appropriate levels.
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!
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! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to
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|
! MLD2P4 developers. Indeed, by using ilev it is possible to set different values
|
|
! of the same parameter at different levels 1,...,nlev-1, even in cases where
|
|
! the parameter must have the same value at all the levels but the coarsest one.
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! For this reason, the interface mld_precset to this routine has been built in
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! such a way that ilev is not visible to the user (see mld_prec_mod.f90).
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!
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!
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subroutine mld_cprecsetc(p,what,string,info,ilev)
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use psb_sparse_mod
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use mld_prec_mod, mld_protect_name => mld_cprecsetc
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implicit none
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! Arguments
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type(mld_cprec_type), intent(inout) :: p
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integer, intent(in) :: what
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character(len=*), intent(in) :: string
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integer, intent(out) :: info
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integer, optional, intent(in) :: ilev
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! Local variables
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integer :: ilev_, nlev_,val
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character(len=*), parameter :: name='mld_precsetc'
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info = psb_success_
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if (.not.allocated(p%precv)) then
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info = 3111
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return
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endif
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nlev_ = size(p%precv)
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if (present(ilev)) then
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ilev_ = ilev
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else
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ilev_ = 1
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end if
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if ((ilev_<1).or.(ilev_ > nlev_)) then
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write(0,*) name,': Error: invalid ILEV/NLEV combination',ilev_, nlev_
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info = -1
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return
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endif
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if (.not.allocated(p%precv(ilev_)%iprcparm)) then
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write(0,*) name,': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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info = 3111
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return
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endif
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call mld_stringval(string,val,info)
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if (info == psb_success_) call mld_inner_precset(p,what,val,info,ilev=ilev)
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end subroutine mld_cprecsetc
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|
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!
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! Subroutine: mld_cprecsetr
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! Version: complex
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!
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! This routine sets the real parameters defining the preconditioner. More
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! precisely, the real parameter identified by 'what' is assigned the value
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! contained in 'val'.
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|
! For the multilevel preconditioners, the levels are numbered in increasing
|
|
! order starting from the finest one, i.e. level 1 is the finest level.
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!
|
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! To set integer and character parameters, see mld_cprecseti and mld_cprecsetc,
|
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! respectively.
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!
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!
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! Arguments:
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! p - type(mld_cprec_type), input/output.
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|
! The preconditioner data structure.
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|
! what - integer, input.
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|
! The number identifying the parameter to be set.
|
|
! A mnemonic constant has been associated to each of these
|
|
! numbers, as reported in the MLD2P4 User's and Reference Guide.
|
|
! val - real(psb_spk_), input.
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! The value of the parameter to be set. The list of allowed
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! values is reported in the MLD2P4 User's and Reference Guide.
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! info - integer, output.
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! Error code.
|
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! ilev - integer, optional, input.
|
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! For the multilevel preconditioner, the level at which the
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! preconditioner parameter has to be set.
|
|
! If nlev is not present, the parameter identified by 'what'
|
|
! is set at all the appropriate levels.
|
|
!
|
|
! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to
|
|
! MLD2P4 developers. Indeed, by using ilev it is possible to set different values
|
|
! of the same parameter at different levels 1,...,nlev-1, even in cases where
|
|
! the parameter must have the same value at all the levels but the coarsest one.
|
|
! For this reason, the interface mld_precset to this routine has been built in
|
|
! such a way that ilev is not visible to the user (see mld_prec_mod.f90).
|
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!
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!
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subroutine mld_cprecsetr(p,what,val,info,ilev)
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use psb_sparse_mod
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use mld_prec_mod, mld_protect_name => mld_cprecsetr
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implicit none
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|
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! Arguments
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type(mld_cprec_type), intent(inout) :: p
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integer, intent(in) :: what
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real(psb_spk_), intent(in) :: val
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integer, intent(out) :: info
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integer, optional, intent(in) :: ilev
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! Local variables
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integer :: ilev_,nlev_
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character(len=*), parameter :: name='mld_precsetr'
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info = psb_success_
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if (present(ilev)) then
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ilev_ = ilev
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else
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ilev_ = 1
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end if
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if (.not.allocated(p%precv)) then
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write(0,*) name,': Error: uninitialized preconditioner, should call MLD_PRECINIT'
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info = 3111
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return
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endif
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nlev_ = size(p%precv)
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if ((ilev_<1).or.(ilev_ > nlev_)) then
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write(0,*) name,': Error: invalid ILEV/NLEV combination',ilev_, nlev_
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info = -1
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return
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endif
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if (.not.allocated(p%precv(ilev_)%rprcparm)) then
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write(0,*) name,': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
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|
info = 3111
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return
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endif
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|
|
|
!
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|
! Set preconditioner parameters at level ilev.
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|
!
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if (present(ilev)) then
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|
|
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if (ilev_ == 1) then
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|
!
|
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! Rules for fine level are slightly different.
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|
!
|
|
select case(what)
|
|
case(mld_sub_iluthrs_)
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p%precv(ilev_)%prec%rprcparm(what) = val
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case default
|
|
write(0,*) name,': Error: invalid WHAT'
|
|
info = -2
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|
end select
|
|
|
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else if (ilev_ > 1) then
|
|
select case(what)
|
|
case(mld_sub_iluthrs_)
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p%precv(ilev_)%prec%rprcparm(what) = val
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case(mld_aggr_omega_val_,mld_aggr_thresh_)
|
|
p%precv(ilev_)%rprcparm(what) = val
|
|
case default
|
|
write(0,*) name,': Error: invalid WHAT'
|
|
info = -2
|
|
end select
|
|
endif
|
|
|
|
else if (.not.present(ilev)) then
|
|
!
|
|
! ilev not specified: set preconditioner parameters at all the appropriate levels
|
|
!
|
|
|
|
select case(what)
|
|
case(mld_sub_iluthrs_)
|
|
do ilev_=1,nlev_
|
|
if (.not.allocated(p%precv(ilev_)%rprcparm)) then
|
|
write(0,*) name,': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
|
|
info = -1
|
|
return
|
|
endif
|
|
p%precv(ilev_)%prec%rprcparm(what) = val
|
|
end do
|
|
case(mld_coarse_iluthrs_)
|
|
ilev_=nlev_
|
|
if (.not.allocated(p%precv(ilev_)%rprcparm)) then
|
|
write(0,*) name,': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
|
|
info = -1
|
|
return
|
|
endif
|
|
p%precv(ilev_)%prec%rprcparm(mld_sub_iluthrs_) = val
|
|
case(mld_aggr_omega_val_)
|
|
do ilev_=2,nlev_
|
|
if (.not.allocated(p%precv(ilev_)%rprcparm)) then
|
|
write(0,*) name,': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
|
|
info = -1
|
|
return
|
|
endif
|
|
p%precv(ilev_)%rprcparm(what) = val
|
|
end do
|
|
case(mld_aggr_thresh_)
|
|
do ilev_=2,nlev_
|
|
if (.not.allocated(p%precv(ilev_)%rprcparm)) then
|
|
write(0,*) name,': Error: uninitialized preconditioner component, should call MLD_PRECINIT'
|
|
info = -1
|
|
return
|
|
endif
|
|
p%precv(ilev_)%rprcparm(what) = val
|
|
end do
|
|
case default
|
|
write(0,*) name,': Error: invalid WHAT'
|
|
info = -2
|
|
end select
|
|
|
|
endif
|
|
|
|
end subroutine mld_cprecsetr
|