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478 lines
16 KiB
Fortran
478 lines
16 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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!
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! These routines set the parameters defining the preconditioner. More precisely,
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! the parameter identified by 'what' is assigned the value contained in 'val'.
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! mld_dprecsetc works on string parameters, mld_dprecseti works on integer
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! parameters, while mld_dprecsetd works on real ones.
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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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!
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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 levels but the coarsest one, except when
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! 'what' has the values mld_coarse_mat_, mld_coarse_solve_,
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! mld_coarse_sweeps_, mld_coarse_fill_in_, which refer to the
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! coarsest level.
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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_,mld_coarse_mat_,&
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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_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 levels 1,...,nlev_-1,
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! except when 'what' has the values mld_coarse_solve_, mld_coarse_sweeps_,
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! mld_coarse_fill_in_, which refer to the coarsest level
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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_,mld_ml_type_,mld_aggr_alg_,mld_aggr_kind_,mld_coarse_mat_,&
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& mld_smooth_pos_,mld_aggr_eig_)
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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_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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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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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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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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!
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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 - string(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 levels but the coarsest one, except when
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! 'what' has the values mld_coarse_mat_, mld_coarse_solve_,
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! mld_coarse_sweeps_, mld_coarse_fill_in_, which refer to the
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! coarsest level.
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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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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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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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if (present(ilev)) then
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if (ilev_ == 1) then
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! Rules for fine level are slightly different.
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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_,mld_coarse_mat_,&
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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_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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select case(what)
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case(mld_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,&
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& mld_smooth_sweeps_,mld_ml_type_,mld_aggr_alg_,mld_aggr_kind_,mld_coarse_mat_,&
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& mld_smooth_pos_)
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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_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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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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subroutine get_stringval(string,val,info)
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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('SLU')
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val = mld_slu_
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case('UMFP')
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val = mld_umf_
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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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!
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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.
|
|
! A mnemonic constant has been associated to each of these
|
|
! numbers, as reported in MLD2P4 user's guide.
|
|
! val - real(kind(1.d0))
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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.
|
|
! info - integer, output.
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! Error code.
|
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! ilev - integer, optional, input.
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|
! For the multilevel preconditioner, the level at which the
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! preconditioner parameter has to be set.
|
|
! If nlev is not present, the parameter identified by 'what'
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! is set at all the levels but the coarsest one, except when
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! 'what' has the values mld_coarse_mat_, mld_coarse_solve_,
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! mld_coarse_sweeps_, mld_coarse_fill_in_, which refer to the
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! coarsest level.
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!
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subroutine mld_dprecsetd(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_dprecsetd
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implicit none
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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
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integer, optional, intent(in) :: ilev
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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
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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 ((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_)%dprcparm)) then
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info = 3111
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return
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endif
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if (ilev_ == 1) then
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! Rules for fine level are slightly different.
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select case(what)
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case(mld_fact_thrs_)
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p%baseprecv(ilev_)%dprcparm(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_aggr_damp_,mld_fact_thrs_)
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p%baseprecv(ilev_)%dprcparm(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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endif
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end subroutine mld_dprecsetd
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