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!
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!
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! MLD2P4 version 2.2
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! MultiLevel Domain Decomposition Parallel Preconditioners Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.5)
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!
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! (C) Copyright 2008-2018
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Daniela di Serafino
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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_sprecset.f90
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!
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! Subroutine: mld_sprecseti
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! Version: real
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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_sprecsetc and mld_sprecsetr,
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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_sprec_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_scprecseti(p,what,val,info,ilev,ilmax,pos,idx)
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use psb_base_mod
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use mld_s_prec_mod, mld_protect_name => mld_scprecseti
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use mld_s_jac_smoother
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use mld_s_as_smoother
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use mld_s_diag_solver
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use mld_s_l1_diag_solver
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use mld_s_ilu_solver
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use mld_s_id_solver
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use mld_s_gs_solver
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#if defined(HAVE_SLU_)
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use mld_s_slu_solver
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#endif
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#if defined(HAVE_MUMPS_)
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use mld_s_mumps_solver
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#endif
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implicit none
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! Arguments
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class(mld_sprec_type), intent(inout) :: p
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character(len=*), intent(in) :: what
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integer(psb_ipk_), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), optional, intent(in) :: ilev,ilmax
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character(len=*), optional, intent(in) :: pos
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integer(psb_ipk_), intent(in), optional :: idx
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! Local variables
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integer(psb_ipk_) :: ilev_, nlev_, ilmax_, il
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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(psb_err_unit,*) name,&
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& ': Error: uninitialized preconditioner,',&
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&' 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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if (present(ilmax)) then
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ilmax_ = ilmax
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else
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ilmax_ = ilev_
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end if
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else
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ilev_ = 1
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ilmax_ = nlev_
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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(psb_err_unit,*) name,&
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&': Error: invalid ILEV/NLEV combination',ilev_, nlev_
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return
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endif
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if ((ilmax_<1).or.(ilmax_ > nlev_)) then
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info = -1
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write(psb_err_unit,*) name,&
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&': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_
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return
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endif
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select case(psb_toupper(what))
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case ('MIN_COARSE_SIZE')
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p%ag_data%min_coarse_size = max(val,-1)
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return
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case('MAX_LEVS')
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p%ag_data%max_levs = max(val,1)
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return
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case ('OUTER_SWEEPS')
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p%outer_sweeps = max(val,1)
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return
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end select
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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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select case(psb_toupper(what))
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case('SMOOTHER_TYPE','SUB_SOLVE','SMOOTHER_SWEEPS',&
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& 'ML_CYCLE','PAR_AGGR_ALG','AGGR_ORD',&
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& 'AGGR_TYPE','AGGR_PROL','AGGR_OMEGA_ALG',&
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& 'AGGR_EIG','SUB_RESTR','SUB_PROL', &
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& 'SUB_OVR','SUB_FILLIN',&
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& 'COARSE_MAT')
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do il=ilev_, ilmax_
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call p%precv(il)%set(what,val,info,pos=pos)
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end do
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case('COARSE_SUBSOLVE')
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if (ilev_ /= nlev_) then
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write(psb_err_unit,*) name,&
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& ': 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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call p%precv(ilev_)%set('SUB_SOLVE',val,info,pos=pos)
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case('COARSE_SOLVE')
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if (ilev_ /= nlev_) then
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write(psb_err_unit,*) name,&
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& ': 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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call p%precv(nlev_)%set('COARSE_SOLVE',val,info,pos=pos)
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select case (val)
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case(mld_bjac_,mld_l1_bjac_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',val,info,pos=pos)
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#if defined(HAVE_SLU_)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
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#elif defined(HAVE_MUMPS_)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
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#else
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call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
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#endif
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info)
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case(mld_slu_)
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#if defined(HAVE_SLU_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
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#elif defined(HAVE_MUMPS_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#else
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#endif
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case(mld_ilu_n_, mld_ilu_t_,mld_milu_n_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
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case(mld_mumps_)
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#if defined(HAVE_MUMPS_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#else
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#endif
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case(mld_umf_)
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#if defined(HAVE_SLU_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
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#elif defined(HAVE_MUMPS_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#else
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#endif
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case(mld_sludist_)
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#if defined(HAVE_SLU_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
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#elif defined(HAVE_MUMPS_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#else
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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#endif
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case(mld_jac_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_diag_scale_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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case(mld_l1_jac_)
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call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
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call p%precv(nlev_)%set('SUB_SOLVE',mld_l1_diag_scale_,info,pos=pos)
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call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
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end select
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endif
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case('COARSE_SWEEPS')
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if (ilev_ /= nlev_) then
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write(psb_err_unit,*) name,&
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& ': Error: Inconsistent specification of WHAT vs. ILEV'
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info = -2
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return
|
|
|
|
|
end if
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_SWEEPS',val,info,pos=pos)
|
|
|
|
|
|
|
|
|
|
case('COARSE_FILLIN')
|
|
|
|
|
if (ilev_ /= nlev_) then
|
|
|
|
|
write(psb_err_unit,*) name,&
|
|
|
|
|
& ': Error: Inconsistent specification of WHAT vs. ILEV'
|
|
|
|
|
info = -2
|
|
|
|
|
return
|
|
|
|
|
end if
|
|
|
|
|
call p%precv(nlev_)%set('SUB_FILLIN',val,info,pos=pos)
|
|
|
|
|
|
|
|
|
|
case default
|
|
|
|
|
do il=ilev_, ilmax_
|
|
|
|
|
call p%precv(il)%set(what,val,info,pos=pos,idx=idx)
|
|
|
|
|
end do
|
|
|
|
|
end select
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
else if (.not.present(ilev)) then
|
|
|
|
|
!
|
|
|
|
|
! ilev not specified: set preconditioner parameters at all the appropriate
|
|
|
|
|
! levels
|
|
|
|
|
!
|
|
|
|
|
select case(psb_toupper(trim(what)))
|
|
|
|
|
case('SUB_SOLVE','SUB_RESTR','SUB_PROL',&
|
|
|
|
|
& 'SUB_OVR','SUB_FILLIN',&
|
|
|
|
|
& 'SMOOTHER_SWEEPS','SMOOTHER_TYPE')
|
|
|
|
|
do ilev_=1,max(1,nlev_-1)
|
|
|
|
|
call p%precv(ilev_)%set(what,val,info,pos=pos)
|
|
|
|
|
if (info /= 0) return
|
|
|
|
|
end do
|
|
|
|
|
|
|
|
|
|
case('ML_CYCLE','PAR_AGGR_ALG','AGGR_ORD','AGGR_PROL','AGGR_TYPE',&
|
|
|
|
|
& 'AGGR_OMEGA_ALG','AGGR_EIG','AGGR_FILTER')
|
|
|
|
|
do ilev_=1,nlev_
|
|
|
|
|
call p%precv(ilev_)%set(what,val,info,pos=pos)
|
|
|
|
|
if (info /= 0) return
|
|
|
|
|
end do
|
|
|
|
|
|
|
|
|
|
case('COARSE_MAT')
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',val,info,pos=pos)
|
|
|
|
|
end if
|
|
|
|
|
|
|
|
|
|
case('COARSE_SOLVE')
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_SOLVE',val,info,pos=pos)
|
|
|
|
|
select case (val)
|
|
|
|
|
case(mld_bjac_,mld_l1_bjac_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',val,info,pos=pos)
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info)
|
|
|
|
|
case(mld_slu_)
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case(mld_ilu_n_, mld_ilu_t_,mld_milu_n_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
|
|
|
|
|
case(mld_mumps_)
|
|
|
|
|
#if defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case(mld_umf_)
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
case(mld_sludist_)
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case(mld_jac_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_diag_scale_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
|
|
|
|
|
case(mld_l1_jac_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',mld_l1_diag_scale_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
|
|
|
|
|
end select
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
case('COARSE_SUBSOLVE')
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
case('COARSE_SWEEPS')
|
|
|
|
|
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_SWEEPS',val,info,pos=pos)
|
|
|
|
|
end if
|
|
|
|
|
|
|
|
|
|
case('COARSE_FILLIN')
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('SUB_FILLIN',val,info,pos=pos)
|
|
|
|
|
end if
|
|
|
|
|
|
|
|
|
|
case default
|
|
|
|
|
do ilev_=1,nlev_
|
|
|
|
|
call p%precv(ilev_)%set(what,val,info,pos=pos,idx=idx)
|
|
|
|
|
end do
|
|
|
|
|
end select
|
|
|
|
|
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
end subroutine mld_scprecseti
|
|
|
|
|
|
|
|
|
|
!
|
|
|
|
|
! Subroutine: mld_sprecsetc
|
|
|
|
|
! Version: real
|
|
|
|
|
!
|
|
|
|
|
! This routine sets the character parameters defining the preconditioner. More
|
|
|
|
|
! precisely, the character parameter identified by 'what' is assigned the value
|
|
|
|
|
! contained in 'val'.
|
|
|
|
|
! For the multilevel preconditioners, the levels are numbered in increasing
|
|
|
|
|
! order starting from the finest one, i.e. level 1 is the finest level.
|
|
|
|
|
!
|
|
|
|
|
! To set integer and real parameters, see mld_sprecseti and mld_sprecsetr,
|
|
|
|
|
! respectively.
|
|
|
|
|
!
|
|
|
|
|
!
|
|
|
|
|
! Arguments:
|
|
|
|
|
! p - type(mld_sprec_type), input/output.
|
|
|
|
|
! The preconditioner data structure.
|
|
|
|
|
! what - integer, input.
|
|
|
|
|
! 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.
|
|
|
|
|
! string - character(len=*), input.
|
|
|
|
|
! The value of the parameter to be set. The list of allowed
|
|
|
|
|
! values is reported in the MLD2P4 User's and Reference Guide.
|
|
|
|
|
! info - integer, output.
|
|
|
|
|
! Error code.
|
|
|
|
|
! ilev - integer, optional, input.
|
|
|
|
|
! For the multilevel preconditioner, the level at which the
|
|
|
|
|
! 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).
|
|
|
|
|
!
|
|
|
|
|
subroutine mld_scprecsetc(p,what,string,info,ilev,ilmax,pos,idx)
|
|
|
|
|
|
|
|
|
|
use psb_base_mod
|
|
|
|
|
use mld_s_prec_mod, mld_protect_name => mld_scprecsetc
|
|
|
|
|
use mld_s_jac_smoother
|
|
|
|
|
use mld_s_as_smoother
|
|
|
|
|
use mld_s_diag_solver
|
|
|
|
|
use mld_s_l1_diag_solver
|
|
|
|
|
use mld_s_ilu_solver
|
|
|
|
|
use mld_s_id_solver
|
|
|
|
|
use mld_s_gs_solver
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
use mld_s_slu_solver
|
|
|
|
|
#endif
|
|
|
|
|
#if defined(HAVE_MUMPS_)
|
|
|
|
|
use mld_s_mumps_solver
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
implicit none
|
|
|
|
|
|
|
|
|
|
! Arguments
|
|
|
|
|
class(mld_sprec_type), intent(inout) :: p
|
|
|
|
|
character(len=*), intent(in) :: what
|
|
|
|
|
character(len=*), intent(in) :: string
|
|
|
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
|
integer(psb_ipk_), optional, intent(in) :: ilev,ilmax
|
|
|
|
|
character(len=*), optional, intent(in) :: pos
|
|
|
|
|
integer(psb_ipk_), intent(in), optional :: idx
|
|
|
|
|
|
|
|
|
|
! Local variables
|
|
|
|
|
integer(psb_ipk_) :: ilev_, nlev_,val,ilmax_, il
|
|
|
|
|
character(len=*), parameter :: name='mld_precsetc'
|
|
|
|
|
|
|
|
|
|
info = psb_success_
|
|
|
|
|
|
|
|
|
|
if (.not.allocated(p%precv)) then
|
|
|
|
|
info = 3111
|
|
|
|
|
write(psb_err_unit,*) name,&
|
|
|
|
|
& ': Error: uninitialized preconditioner,',&
|
|
|
|
|
&' should call MLD_PRECINIT'
|
|
|
|
|
return
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
nlev_ = size(p%precv)
|
|
|
|
|
|
|
|
|
|
if (present(ilev)) then
|
|
|
|
|
ilev_ = ilev
|
|
|
|
|
if (present(ilmax)) then
|
|
|
|
|
ilmax_ = ilmax
|
|
|
|
|
else
|
|
|
|
|
ilmax_ = ilev_
|
|
|
|
|
end if
|
|
|
|
|
else
|
|
|
|
|
ilev_ = 1
|
|
|
|
|
ilmax_ = nlev_
|
|
|
|
|
end if
|
|
|
|
|
if ((ilev_<1).or.(ilev_ > nlev_)) then
|
|
|
|
|
info = -1
|
|
|
|
|
write(psb_err_unit,*) name,&
|
|
|
|
|
&': Error: invalid ILEV/NLEV combination',ilev_, nlev_
|
|
|
|
|
return
|
|
|
|
|
endif
|
|
|
|
|
if ((ilmax_<1).or.(ilmax_ > nlev_)) then
|
|
|
|
|
info = -1
|
|
|
|
|
write(psb_err_unit,*) name,&
|
|
|
|
|
&': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_
|
|
|
|
|
return
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
!
|
|
|
|
|
! Set preconditioner parameters at level ilev.
|
|
|
|
|
!
|
|
|
|
|
if (present(ilev)) then
|
|
|
|
|
|
|
|
|
|
select case(psb_toupper(what))
|
|
|
|
|
case('SMOOTHER_TYPE','SUB_SOLVE',&
|
|
|
|
|
& 'ML_CYCLE','PAR_AGGR_ALG','AGGR_ORD',&
|
|
|
|
|
& 'AGGR_TYPE','AGGR_PROL','AGGR_OMEGA_ALG',&
|
|
|
|
|
& 'AGGR_EIG','SUB_RESTR','SUB_PROL', &
|
|
|
|
|
& 'COARSE_MAT')
|
|
|
|
|
do il=ilev_, ilmax_
|
|
|
|
|
call p%precv(il)%set(what,string,info,pos=pos)
|
|
|
|
|
end do
|
|
|
|
|
|
|
|
|
|
case('COARSE_SUBSOLVE')
|
|
|
|
|
if (ilev_ /= nlev_) then
|
|
|
|
|
write(psb_err_unit,*) name,&
|
|
|
|
|
& ': Error: Inconsistent specification of WHAT vs. ILEV'
|
|
|
|
|
info = -2
|
|
|
|
|
return
|
|
|
|
|
end if
|
|
|
|
|
call p%precv(ilev_)%set('SUB_SOLVE',string,info,pos=pos)
|
|
|
|
|
case('COARSE_SOLVE')
|
|
|
|
|
if (ilev_ /= nlev_) then
|
|
|
|
|
write(psb_err_unit,*) name,&
|
|
|
|
|
& ': Error: Inconsistent specification of WHAT vs. ILEV'
|
|
|
|
|
info = -2
|
|
|
|
|
return
|
|
|
|
|
end if
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_SOLVE',string,info,pos=pos)
|
|
|
|
|
select case (psb_toupper(trim(string)))
|
|
|
|
|
case('BJAC', 'L1_BJAC')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',psb_toupper(trim(string)),info,pos=pos)
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','SLU',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','dist',info)
|
|
|
|
|
case('SLU')
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','SLU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case('ILU','MILU','ILUT')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','bjac',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',string,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
case('MUMPS')
|
|
|
|
|
#if defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',string,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC'_,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case('UMF')
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','SLU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
case('SLUDIST')
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','SLU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case('JAC','JACOBI')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','DIAG',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
|
|
|
|
|
case('L1-JACOBI')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','L1-DIAG',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
end select
|
|
|
|
|
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
case default
|
|
|
|
|
do il=ilev_, ilmax_
|
|
|
|
|
call p%precv(il)%set(what,string,info,pos=pos,idx=idx)
|
|
|
|
|
end do
|
|
|
|
|
end select
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
else if (.not.present(ilev)) then
|
|
|
|
|
!
|
|
|
|
|
! ilev not specified: set preconditioner parameters at all the appropriate
|
|
|
|
|
! levels
|
|
|
|
|
!
|
|
|
|
|
select case(psb_toupper(trim(what)))
|
|
|
|
|
case('SUB_SOLVE','SUB_RESTR','SUB_PROL',&
|
|
|
|
|
& 'SMOOTHER_TYPE')
|
|
|
|
|
do ilev_=1,max(1,nlev_-1)
|
|
|
|
|
call p%precv(ilev_)%set(what,string,info,pos=pos)
|
|
|
|
|
if (info /= 0) return
|
|
|
|
|
end do
|
|
|
|
|
|
|
|
|
|
case('ML_CYCLE','PAR_AGGR_ALG','AGGR_ORD','AGGR_PROL','AGGR_TYPE',&
|
|
|
|
|
& 'AGGR_OMEGA_ALG','AGGR_EIG','AGGR_FILTER')
|
|
|
|
|
do ilev_=1,nlev_
|
|
|
|
|
call p%precv(ilev_)%set(what,string,info,pos=pos)
|
|
|
|
|
if (info /= 0) return
|
|
|
|
|
end do
|
|
|
|
|
|
|
|
|
|
case('COARSE_MAT')
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT',string,info,pos=pos)
|
|
|
|
|
end if
|
|
|
|
|
|
|
|
|
|
case('COARSE_SOLVE')
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_SOLVE',string,info,pos=pos)
|
|
|
|
|
select case (string)
|
|
|
|
|
case('BJAC', 'L1_BJAC')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE',psb_toupper(trim(string)),info,pos=pos)
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','SLU',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info)
|
|
|
|
|
case('SLU')
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',string,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case('ILU', 'ILUT','MILU')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',string,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
case('MUMPS')
|
|
|
|
|
#if defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',string,info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case('UMF')
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','SLU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
case('SLUDIST')
|
|
|
|
|
#if defined(HAVE_SLU_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','SLU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','REPL',info,pos=pos)
|
|
|
|
|
#elif defined(HAVE_MUMPS_)
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','MUMPS',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#else
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','ILU',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
#endif
|
|
|
|
|
case('JAC','JACOBI')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','DIAG',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
|
|
|
|
|
case('L1-JACOBI')
|
|
|
|
|
call p%precv(nlev_)%set('SMOOTHER_TYPE','BJAC',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE','L1-DIAG',info,pos=pos)
|
|
|
|
|
call p%precv(nlev_)%set('COARSE_MAT','DIST',info,pos=pos)
|
|
|
|
|
end select
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
case('COARSE_SUBSOLVE')
|
|
|
|
|
if (nlev_ > 1) then
|
|
|
|
|
call p%precv(nlev_)%set('SUB_SOLVE',string,info,pos=pos)
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
case default
|
|
|
|
|
do ilev_=1,nlev_
|
|
|
|
|
call p%precv(ilev_)%set(what,string,info,pos=pos,idx=idx)
|
|
|
|
|
end do
|
|
|
|
|
end select
|
|
|
|
|
|
|
|
|
|
endif
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
end subroutine mld_scprecsetc
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
!
|
|
|
|
|
! Subroutine: mld_sprecsetr
|
|
|
|
|
! Version: real
|
|
|
|
|
!
|
|
|
|
|
! This routine sets the real parameters defining the preconditioner. More
|
|
|
|
|
! precisely, the real parameter identified by 'what' is assigned the value
|
|
|
|
|
! contained in 'val'.
|
|
|
|
|
! For the multilevel preconditioners, the levels are numbered in increasing
|
|
|
|
|
! order starting from the finest one, i.e. level 1 is the finest level.
|
|
|
|
|
!
|
|
|
|
|
! To set integer and character parameters, see mld_sprecseti and mld_sprecsetc,
|
|
|
|
|
! respectively.
|
|
|
|
|
!
|
|
|
|
|
! Arguments:
|
|
|
|
|
! p - type(mld_sprec_type), input/output.
|
|
|
|
|
! The preconditioner data structure.
|
|
|
|
|
! what - integer, input.
|
|
|
|
|
! 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.
|
|
|
|
|
! The value of the parameter to be set. The list of allowed
|
|
|
|
|
! values is reported in the MLD2P4 User's and Reference Guide.
|
|
|
|
|
! info - integer, output.
|
|
|
|
|
! Error code.
|
|
|
|
|
! ilev - integer, optional, input.
|
|
|
|
|
! For the multilevel preconditioner, the level at which the
|
|
|
|
|
! preconditioner parameter has to be set.
|
|
|
|
|
! If nlev is not present, the parameter identified by 'what'
|
|
|
|
|
! is set at all the appropriate levels.
|
|
|
|
|
!
|
|
|
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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_scprecsetr(p,what,val,info,ilev,ilmax,pos,idx)
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use psb_base_mod
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use mld_s_prec_mod, mld_protect_name => mld_scprecsetr
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implicit none
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! Arguments
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class(mld_sprec_type), intent(inout) :: p
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character(len=*), intent(in) :: what
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real(psb_spk_), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), optional, intent(in) :: ilev,ilmax
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character(len=*), optional, intent(in) :: pos
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integer(psb_ipk_), intent(in), optional :: idx
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! Local variables
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integer(psb_ipk_) :: ilev_,nlev_, ilmax_, il
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real(psb_spk_) :: thr
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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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select case(psb_toupper(what))
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case ('MIN_CR_RATIO')
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p%ag_data%min_cr_ratio = max(sone,val)
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return
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end select
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if (.not.allocated(p%precv)) then
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write(psb_err_unit,*) name,&
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&': Error: uninitialized preconditioner,',&
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&' 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 (present(ilev)) then
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ilev_ = ilev
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if (present(ilmax)) then
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ilmax_ = ilmax
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else
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ilmax_ = ilev_
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end if
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else
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ilev_ = 1
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ilmax_ = nlev_
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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(psb_err_unit,*) name,&
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&': Error: invalid ILEV/NLEV combination',ilev_, nlev_
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return
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endif
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if ((ilmax_<1).or.(ilmax_ > nlev_)) then
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info = -1
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write(psb_err_unit,*) name,&
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&': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_
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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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do il=ilev_, ilmax_
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call p%precv(il)%set(what,val,info,pos=pos,idx=idx)
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end do
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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 levels
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!
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select case(psb_toupper(what))
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case('COARSE_ILUTHRS')
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ilev_=nlev_
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call p%precv(ilev_)%set('SUB_ILUTHRS',val,info,pos=pos)
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case default
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do il=1,nlev_
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call p%precv(il)%set(what,val,info,pos=pos,idx=idx)
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end do
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end select
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endif
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end subroutine mld_scprecsetr
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