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614 lines
20 KiB
Fortran
614 lines
20 KiB
Fortran
!!$
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!!$
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!!$ MLD2P4
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!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
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!!$ based on PSBLAS (Parallel Sparse BLAS v.2.0)
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!!$
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!!$ (C) Copyright 2007 Alfredo Buttari University of Rome Tor Vergata
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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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!!$ Salvatore Filippone University of Rome Tor Vergata
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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_dprecset.f90
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!
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! Subroutine: mld_dprecseti
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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_dprecsetc and mld_dprecsetd,
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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_dprec_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 MLD2P4 user's 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 MLD2P4 user's 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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subroutine mld_dprecseti(p,what,val,info,ilev)
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use psb_base_mod
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use mld_prec_mod, mld_protect_name => mld_dprecseti
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implicit none
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! Arguments
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type(mld_dprec_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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info = 0
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if (.not.allocated(p%baseprecv)) then
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info = 3111
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return
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endif
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nlev_ = size(p%baseprecv)
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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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return
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endif
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if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
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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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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_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,mld_n_ovr_,mld_sub_fill_in_,mld_smooth_sweeps_)
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p%baseprecv(ilev_)%iprcparm(what) = val
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case default
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write(0,*) 'Error: trying to call PRECSET with an 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_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,mld_n_ovr_,mld_sub_fill_in_,&
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& mld_smooth_sweeps_,mld_ml_type_,mld_aggr_alg_,mld_aggr_kind_,&
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& mld_smooth_pos_,mld_aggr_eig_)
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p%baseprecv(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,*) '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%baseprecv(ilev_)%iprcparm(mld_coarse_mat_) = val
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case(mld_coarse_solve_)
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if (ilev_ /= nlev_) then
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write(0,*) '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%baseprecv(ilev_)%iprcparm(mld_sub_solve_) = val
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case(mld_coarse_sweeps_)
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if (ilev_ /= nlev_) then
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write(0,*) '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%baseprecv(ilev_)%iprcparm(mld_smooth_sweeps_) = val
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case(mld_coarse_fill_in_)
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if (ilev_ /= nlev_) then
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write(0,*) '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%baseprecv(ilev_)%iprcparm(mld_sub_fill_in_) = val
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case default
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write(0,*) 'Error: trying to call PRECSET with an 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_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,mld_n_ovr_,mld_sub_fill_in_,&
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& mld_smooth_sweeps_)
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do ilev_=1,nlev_-1
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if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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p%baseprecv(ilev_)%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_smooth_pos_,mld_aggr_eig_)
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do ilev_=2,nlev_-1
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if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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p%baseprecv(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%baseprecv(nlev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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if (nlev_ > 1) p%baseprecv(nlev_)%iprcparm(mld_coarse_mat_) = val
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case(mld_coarse_solve_)
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if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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if (nlev_ > 1) p%baseprecv(nlev_)%iprcparm(mld_sub_solve_) = val
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case(mld_coarse_sweeps_)
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if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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if (nlev_ > 1) p%baseprecv(nlev_)%iprcparm(mld_smooth_sweeps_) = val
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case(mld_coarse_fill_in_)
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if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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if (nlev_ > 1) p%baseprecv(nlev_)%iprcparm(mld_sub_fill_in_) = val
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case default
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write(0,*) 'Error: trying to call PRECSET with an 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_dprecseti
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!
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! Subroutine: mld_dprecsetc
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! Version: real
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! Contains: get_stringval
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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_dprecseti and mld_dprecsetd,
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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_dprec_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 MLD2P4 user's 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 MLD2P4 user's 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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subroutine mld_dprecsetc(p,what,string,info,ilev)
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use psb_base_mod
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use mld_prec_mod, mld_protect_name => mld_dprecsetc
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implicit none
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! Arguments
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type(mld_dprec_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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info = 0
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if (.not.allocated(p%baseprecv)) then
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info = 3111
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return
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endif
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nlev_ = size(p%baseprecv)
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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,*) 'PRECSET ERRROR: ilev out of bounds'
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info = -1
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return
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endif
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if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
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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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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_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_)
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call get_stringval(string,val,info)
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p%baseprecv(ilev_)%iprcparm(what) = val
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case default
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write(0,*) 'Error: trying to call PRECSET with an 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_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,&
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& mld_ml_type_,mld_aggr_alg_,mld_aggr_kind_,&
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& mld_smooth_pos_,mld_aggr_eig_)
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call get_stringval(string,val,info)
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p%baseprecv(ilev_)%iprcparm(what) = val
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case(mld_coarse_mat_)
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call get_stringval(string,val,info)
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if (ilev_ /= nlev_ .and. val /= mld_distr_mat_) then
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write(0,*) '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%baseprecv(ilev_)%iprcparm(mld_coarse_mat_) = val
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case(mld_coarse_solve_)
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call get_stringval(string,val,info)
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if (ilev_ /= nlev_) then
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write(0,*) '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%baseprecv(ilev_)%iprcparm(mld_sub_solve_) = val
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case default
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write(0,*) 'Error: trying to call PRECSET with an 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_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_)
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call get_stringval(string,val,info)
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do ilev_=1,nlev_-1
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if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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p%baseprecv(ilev_)%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_smooth_pos_)
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call get_stringval(string,val,info)
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do ilev_=2,nlev_-1
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if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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p%baseprecv(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%baseprecv(nlev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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call get_stringval(string,val,info)
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if (nlev_ > 1) p%baseprecv(nlev_)%iprcparm(mld_coarse_mat_) = val
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case(mld_coarse_solve_)
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if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
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write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
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info = -1
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return
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endif
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call get_stringval(string,val,info)
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if (nlev_ > 1) p%baseprecv(nlev_)%iprcparm(mld_sub_solve_) = val
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case default
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write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
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info = -2
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end select
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endif
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contains
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!
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! Subroutine: get_stringval
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! Note: internal subroutine of mld_dprecsetc
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!
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! This routine converts the string contained into string into the corresponding
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! integer value.
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!
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! Arguments:
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! string - character(len=*), input.
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! The string to be converted.
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! val - integer, output.
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! The integer value corresponding to the string
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! info - integer, output.
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! Error code.
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!
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subroutine get_stringval(string,val,info)
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! Arguments
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character(len=*), intent(in) :: string
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integer, intent(out) :: val, info
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info = 0
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select case(toupper(trim(string)))
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case('NONE')
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val = 0
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case('HALO')
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val = psb_halo_
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case('SUM')
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val = psb_sum_
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case('AVG')
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val = psb_avg_
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case('ILU')
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val = mld_ilu_n_
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case('MILU')
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val = mld_milu_n_
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case('ILUT')
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val = mld_ilu_t_
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case('UMF')
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val = mld_umf_
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case('SLU')
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val = mld_slu_
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case('SLUDIST')
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val = mld_sludist_
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case('ADD')
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val = mld_add_ml_
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case('MULT')
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val = mld_mult_ml_
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case('DEC')
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val = mld_dec_aggr_
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case('REPL')
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val = mld_repl_mat_
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case('DIST')
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val = mld_distr_mat_
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case('SYMDEC')
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val = mld_sym_dec_aggr_
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case('GLB')
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val = mld_glb_aggr_
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case('SMOOTH')
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val = mld_smooth_prol_
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case('PRE')
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val = mld_pre_smooth_
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case('POST')
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val = mld_post_smooth_
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case('TWOSIDE','BOTH')
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val = mld_twoside_smooth_
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case default
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val = -1
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info = -1
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end select
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if (info /= 0) then
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write(0,*) 'Error in get_Stringval: unknown: "',trim(string),'"'
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end if
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end subroutine get_stringval
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end subroutine mld_dprecsetc
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!
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! Subroutine: mld_dprecsetd
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! Version: real
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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
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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 character parameters, see mld_dprecseti and mld_dprecsetc,
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! respectively.
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!
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! Arguments:
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! p - type(mld_dprec_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 MLD2P4 user's guide.
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! val - real(kind(1.d0)), 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 MLD2P4 user's 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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subroutine mld_dprecsetd(p,what,val,info,ilev)
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|
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use psb_base_mod
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use mld_prec_mod, mld_protect_name => mld_dprecsetd
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|
|
implicit none
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|
|
|
! Arguments
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type(mld_dprec_type), intent(inout) :: p
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|
integer, intent(in) :: what
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|
real(kind(1.d0)), intent(in) :: val
|
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integer, intent(out) :: info
|
|
integer, optional, intent(in) :: ilev
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|
|
|
! Local variables
|
|
integer :: ilev_,nlev_
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|
|
|
info = 0
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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%baseprecv)) then
|
|
info = 3111
|
|
return
|
|
endif
|
|
nlev_ = size(p%baseprecv)
|
|
|
|
if ((ilev_<1).or.(ilev_ > nlev_)) then
|
|
write(0,*) 'PRECSET ERRROR: ilev out of bounds'
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|
info = -1
|
|
return
|
|
endif
|
|
if (.not.allocated(p%baseprecv(ilev_)%dprcparm)) then
|
|
info = 3111
|
|
return
|
|
endif
|
|
|
|
!
|
|
! Set preconditioner parameters at level ilev.
|
|
!
|
|
if (present(ilev)) then
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|
|
|
if (ilev_ == 1) then
|
|
!
|
|
! Rules for fine level are slightly different.
|
|
!
|
|
select case(what)
|
|
case(mld_fact_thrs_)
|
|
p%baseprecv(ilev_)%dprcparm(what) = val
|
|
case default
|
|
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
|
|
info = -2
|
|
end select
|
|
|
|
else if (ilev_ > 1) then
|
|
select case(what)
|
|
case(mld_aggr_damp_,mld_fact_thrs_)
|
|
p%baseprecv(ilev_)%dprcparm(what) = val
|
|
case default
|
|
write(0,*) 'Error: trying to call PRECSET with an 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_fact_thrs_)
|
|
do ilev_=1,nlev_-1
|
|
if (.not.allocated(p%baseprecv(ilev_)%dprcparm)) then
|
|
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
|
|
info = -1
|
|
return
|
|
endif
|
|
p%baseprecv(ilev_)%dprcparm(what) = val
|
|
end do
|
|
case(mld_aggr_damp_)
|
|
do ilev_=2,nlev_-1
|
|
if (.not.allocated(p%baseprecv(ilev_)%dprcparm)) then
|
|
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
|
|
info = -1
|
|
return
|
|
endif
|
|
p%baseprecv(ilev_)%dprcparm(what) = val
|
|
end do
|
|
case default
|
|
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
|
|
info = -2
|
|
end select
|
|
|
|
endif
|
|
|
|
end subroutine mld_dprecsetd
|