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amg4psblas/mld_dprecinit.f90

203 lines
8.8 KiB
Fortran

!!$
!!$
!!$ MD2P4
!!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS
!!$ for
!!$ Parallel Sparse BLAS v2.0
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$ Daniela di Serafino Second University of Naples
!!$ Pasqua D'Ambra ICAR-CNR
!!$
!!$ Redistribution and use in source and binary forms, with or without
!!$ modification, are permitted provided that the following conditions
!!$ are met:
!!$ 1. Redistributions of source code must retain the above copyright
!!$ notice, this list of conditions and the following disclaimer.
!!$ 2. Redistributions in binary form must reproduce the above copyright
!!$ notice, this list of conditions, and the following disclaimer in the
!!$ documentation and/or other materials provided with the distribution.
!!$ 3. The name of the MD2P4 group or the names of its contributors may
!!$ not be used to endorse or promote products derived from this
!!$ software without specific written permission.
!!$
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MD2P4 GROUP OR ITS CONTRIBUTORS
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!!$ POSSIBILITY OF SUCH DAMAGE.
!!$
!!$
subroutine mld_dprecinit(p,ptype,info,nlev)
use psb_base_mod
use mld_prec_mod, mld_protect_name => mld_dprecinit
implicit none
type(mld_dprec_type), intent(inout) :: p
character(len=*), intent(in) :: ptype
integer, intent(out) :: info
integer, optional, intent(in) :: nlev
integer :: nlev_, ilev_
info = 0
if (allocated(p%baseprecv)) then
call mld_precfree(p,info)
if (info /=0) then
! Do we want to do something?
endif
endif
select case(toupper(ptype(1:len_trim(ptype))))
case ('NOPREC')
nlev_ = 1
ilev_ = 1
allocate(p%baseprecv(nlev_),stat=info)
if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
if (info /= 0) return
p%baseprecv(ilev_)%iprcparm(:) = 0
p%baseprecv(ilev_)%iprcparm(prec_type_) = noprec_
p%baseprecv(ilev_)%iprcparm(sub_solve_) = f_none_
p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
case ('DIAG')
nlev_ = 1
ilev_ = 1
allocate(p%baseprecv(nlev_),stat=info)
if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
if (info /= 0) return
p%baseprecv(ilev_)%iprcparm(:) = 0
p%baseprecv(ilev_)%iprcparm(prec_type_) = diag_
p%baseprecv(ilev_)%iprcparm(sub_solve_) = f_none_
p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
case ('BJAC')
nlev_ = 1
ilev_ = 1
allocate(p%baseprecv(nlev_),stat=info)
if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
if (info /= 0) return
p%baseprecv(ilev_)%iprcparm(:) = 0
p%baseprecv(ilev_)%iprcparm(prec_type_) = bjac_
p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
case ('AS')
nlev_ = 1
ilev_ = 1
allocate(p%baseprecv(nlev_),stat=info)
if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
if (info /= 0) return
p%baseprecv(ilev_)%iprcparm(:) = 0
p%baseprecv(ilev_)%iprcparm(prec_type_) = as_
p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_halo_
p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
case ('ML')
if (present(nlev)) then
nlev_ = max(1,nlev)
else
nlev_ = 2
end if
if (nlev_ == 1) then
write(0,*) 'Warning: requested ML preconditioner with NLEV=1'
endif
ilev_ = 1
allocate(p%baseprecv(nlev_),stat=info)
if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
if (info /= 0) return
p%baseprecv(ilev_)%iprcparm(:) = 0
p%baseprecv(ilev_)%iprcparm(prec_type_) = as_
p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_halo_
p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
if (nlev_ == 1) return
do ilev_ = 2, nlev_ -1
if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
if (info /= 0) return
p%baseprecv(ilev_)%iprcparm(:) = 0
p%baseprecv(ilev_)%iprcparm(prec_type_) = bjac_
p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
p%baseprecv(ilev_)%iprcparm(ml_type_) = mult_ml
p%baseprecv(ilev_)%iprcparm(aggr_alg_) = dec_aggr_
p%baseprecv(ilev_)%iprcparm(aggr_kind_) = tent_prol
p%baseprecv(ilev_)%iprcparm(coarse_mat_) = distr_mat_
p%baseprecv(ilev_)%iprcparm(smooth_pos_) = post_smooth_
p%baseprecv(ilev_)%iprcparm(aggr_eig_) = max_norm_
p%baseprecv(ilev_)%iprcparm(sub_solve_) = ilu_n_
p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 1
p%baseprecv(ilev_)%dprcparm(aggr_damp_) = 4.d0/3.d0
end do
ilev_ = nlev_
if (info == 0) call psb_realloc(ifpsz,p%baseprecv(ilev_)%iprcparm,info)
if (info == 0) call psb_realloc(dfpsz,p%baseprecv(ilev_)%dprcparm,info)
if (info /= 0) return
p%baseprecv(ilev_)%iprcparm(:) = 0
p%baseprecv(ilev_)%iprcparm(prec_type_) = bjac_
p%baseprecv(ilev_)%iprcparm(sub_restr_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_prol_) = psb_none_
p%baseprecv(ilev_)%iprcparm(sub_ren_) = 0
p%baseprecv(ilev_)%iprcparm(n_ovr_) = 0
p%baseprecv(ilev_)%iprcparm(ml_type_) = mult_ml
p%baseprecv(ilev_)%iprcparm(aggr_alg_) = dec_aggr_
p%baseprecv(ilev_)%iprcparm(aggr_kind_) = tent_prol
p%baseprecv(ilev_)%iprcparm(coarse_mat_) = distr_mat_
p%baseprecv(ilev_)%iprcparm(smooth_pos_) = post_smooth_
p%baseprecv(ilev_)%iprcparm(aggr_eig_) = max_norm_
p%baseprecv(ilev_)%iprcparm(sub_solve_) = umf_
p%baseprecv(ilev_)%iprcparm(sub_fill_in_) = 0
p%baseprecv(ilev_)%iprcparm(smooth_sweeps_) = 4
p%baseprecv(ilev_)%dprcparm(aggr_damp_) = 4.d0/3.d0
case default
write(0,*) 'Unknown preconditioner type request "',ptype,'"'
info = 2
end select
end subroutine mld_dprecinit