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198 lines
8.6 KiB
Fortran
198 lines
8.6 KiB
Fortran
!!$
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!!$
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!!$ MD2P4
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!!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS
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!!$ for
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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!!$ Daniela di Serafino Second University of Naples
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!!$ Pasqua D'Ambra ICAR-CNR
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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 MD2P4 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 MD2P4 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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subroutine psb_zprecinit(p,ptype,info,nlev)
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use psb_base_mod
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use psb_prec_mod, psb_protect_name => psb_zprecinit
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implicit none
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type(psb_zprec_type), intent(inout) :: p
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character(len=*), intent(in) :: ptype
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integer, intent(out) :: info
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integer, optional, intent(in) :: nlev
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integer :: nlev_, ilev_
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info = 0
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if (allocated(p%baseprecv)) then
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call psb_precfree(p,info)
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if (info /=0) then
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! Do we want to do something?
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endif
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endif
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select case(toupper(ptype(1:len_trim(ptype))))
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case ('NONE','NOPREC')
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nlev_ = 1
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ilev_ = 1
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allocate(p%baseprecv(nlev_),stat=info)
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if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
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if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
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if (info /= 0) return
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p%baseprecv(ilev_)%iprcparm(:) = 0
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p%baseprecv(ilev_)%iprcparm(prec_type_) = noprec_
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p%baseprecv(ilev_)%iprcparm(sub_solve_) = f_none_
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p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
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p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
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p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
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case ('DIAG')
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nlev_ = 1
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ilev_ = 1
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allocate(p%baseprecv(nlev_),stat=info)
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if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
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if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
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if (info /= 0) return
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p%baseprecv(ilev_)%iprcparm(prec_type_) = diag_
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p%baseprecv(ilev_)%iprcparm(sub_solve_) = f_none_
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p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
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p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
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p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
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case ('BJAC')
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nlev_ = 1
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ilev_ = 1
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allocate(p%baseprecv(nlev_),stat=info)
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if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
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if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
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if (info /= 0) return
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p%baseprecv(ilev_)%iprcparm(:) = 0
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p%baseprecv(ilev_)%iprcparm(prec_type_) = bjac_
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p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
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p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
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p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
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p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
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p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
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case ('ASM','AS')
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nlev_ = 1
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ilev_ = 1
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allocate(p%baseprecv(nlev_),stat=info)
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if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
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if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
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if (info /= 0) return
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p%baseprecv(ilev_)%iprcparm(prec_type_) = as_
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p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
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p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_halo_
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p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
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p%baseprecv(ilev_)%iprcparm(n_ovr_) = 1
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p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
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p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
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case ('MLD', 'ML')
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if (present(nlev)) then
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nlev_ = max(1,nlev)
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else
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nlev_ = 2
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end if
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if (nlev_ == 1) then
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write(0,*) 'Warning: requested ML preconditioner with NLEV=1'
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endif
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ilev_ = 1
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allocate(p%baseprecv(nlev_),stat=info)
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if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
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if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
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if (info /= 0) return
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p%baseprecv(ilev_)%iprcparm(prec_type_) = as_
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p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
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p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_halo_
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p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
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p%baseprecv(ilev_)%iprcparm(n_ovr_) = 1
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p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
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p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
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if (nlev_ == 1) return
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do ilev_ = 2, nlev_ -1
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if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
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if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
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if (info /= 0) return
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p%baseprecv(ilev_)%iprcparm(prec_type_) = bjac_
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p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
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p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
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p%baseprecv(ilev_)%iprcparm(ml_type_) = mult_ml
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p%baseprecv(ilev_)%iprcparm(aggr_alg_) = dec_aggr_
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p%baseprecv(ilev_)%iprcparm(aggr_kind_) = tent_prol
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p%baseprecv(ilev_)%iprcparm(coarse_mat_) = distr_mat_
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p%baseprecv(ilev_)%iprcparm(smooth_pos_) = post_smooth_
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p%baseprecv(ilev_)%iprcparm(aggr_eig_) = max_norm_
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p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
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p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
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p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
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p%baseprecv(ilev_)%dprcparm(aggr_damp_) = 4.d0/3.d0
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end do
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ilev_ = nlev_
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if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
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if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
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if (info /= 0) return
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p%baseprecv(ilev_)%iprcparm(prec_type_) = bjac_
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p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
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p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
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p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
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p%baseprecv(ilev_)%iprcparm(ml_type_) = mult_ml
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p%baseprecv(ilev_)%iprcparm(aggr_alg_) = dec_aggr_
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p%baseprecv(ilev_)%iprcparm(aggr_kind_) = tent_prol
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p%baseprecv(ilev_)%iprcparm(coarse_mat_) = distr_mat_
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p%baseprecv(ilev_)%iprcparm(smooth_pos_) = post_smooth_
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p%baseprecv(ilev_)%iprcparm(aggr_eig_) = max_norm_
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p%baseprecv(ilev_)%iprcparm(sub_solve_) = umf_
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p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
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p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 4
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p%baseprecv(ilev_)%dprcparm(aggr_damp_) = 4.d0/3.d0
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case default
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write(0,*) 'Unknown preconditioner type request "',ptype,'"'
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info = 2
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end select
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end subroutine psb_zprecinit
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