You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
297 lines
9.9 KiB
Fortran
297 lines
9.9 KiB
Fortran
!!$
|
|
!!$
|
|
!!$ MLD2P4 version 2.0
|
|
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
|
|
!!$
|
|
!!$ (C) Copyright 2008,2009,2010
|
|
!!$
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$ Pasqua D'Ambra ICAR-CNR, Naples
|
|
!!$ Daniela di Serafino Second University of Naples
|
|
!!$
|
|
!!$ 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 MLD2P4 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 MLD2P4 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.
|
|
!!$
|
|
!!$
|
|
! File: mld_zprecbld.f90
|
|
!
|
|
! Subroutine: mld_zprecbld
|
|
! Version: complex
|
|
! Contains: subroutine init_baseprec_av
|
|
!
|
|
! This routine builds the preconditioner according to the requirements made by
|
|
! the user through the subroutines mld_precinit and mld_precset.
|
|
!
|
|
!
|
|
! Arguments:
|
|
! a - type(psb_zspmat_type).
|
|
! The sparse matrix structure containing the local part of the
|
|
! matrix to be preconditioned.
|
|
! desc_a - type(psb_desc_type), input.
|
|
! The communication descriptor of a.
|
|
! p - type(mld_zprec_type), input/output.
|
|
! The preconditioner data structure containing the local part
|
|
! of the preconditioner to be built.
|
|
! info - integer, output.
|
|
! Error code.
|
|
!
|
|
subroutine mld_zprecbld(a,desc_a,p,info)
|
|
|
|
use psb_sparse_mod
|
|
use mld_inner_mod
|
|
use mld_prec_mod, mld_protect_name => mld_zprecbld
|
|
use mld_z_jac_smoother
|
|
use mld_z_as_smoother
|
|
use mld_z_diag_solver
|
|
use mld_z_ilu_solver
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
type(psb_zspmat_type),intent(in), target :: a
|
|
type(psb_desc_type), intent(in), target :: desc_a
|
|
type(mld_zprec_type),intent(inout), target :: p
|
|
integer, intent(out) :: info
|
|
!!$ character, intent(in), optional :: upd
|
|
|
|
|
|
! Local Variables
|
|
type(mld_zprec_type) :: t_prec
|
|
Integer :: err,i,k,ictxt, me,np, err_act, iszv, newsz
|
|
integer :: ipv(mld_ifpsz_), val
|
|
integer :: int_err(5)
|
|
character :: upd_
|
|
integer :: debug_level, debug_unit
|
|
character(len=20) :: name, ch_err
|
|
|
|
if (psb_get_errstatus().ne.0) return
|
|
info=psb_success_
|
|
err=0
|
|
call psb_erractionsave(err_act)
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
|
|
name = 'mld_zprecbld'
|
|
info = psb_success_
|
|
int_err(1) = 0
|
|
ictxt = psb_cd_get_context(desc_a)
|
|
call psb_info(ictxt, me, np)
|
|
p%ictxt = ictxt
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Entering ',desc_a%matrix_data(:)
|
|
!
|
|
! For the time being we are commenting out the UPDATE argument;
|
|
! we plan to resurrect it later.
|
|
!!$ if (present(upd)) then
|
|
!!$ if (debug_level >= psb_debug_outer_) &
|
|
!!$ & write(debug_unit,*) me,' ',trim(name),'UPD ', upd
|
|
!!$
|
|
!!$ if ((psb_toupper(upd).eq.'F').or.(psb_toupper(upd).eq.'T')) then
|
|
!!$ upd_=psb_toupper(upd)
|
|
!!$ else
|
|
!!$ upd_='F'
|
|
!!$ endif
|
|
!!$ else
|
|
!!$ upd_='F'
|
|
!!$ endif
|
|
upd_ = 'F'
|
|
|
|
if (.not.allocated(p%precv)) then
|
|
!! Error: should have called mld_zprecinit
|
|
info=3111
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
!
|
|
! Check to ensure all procs have the same
|
|
!
|
|
newsz = -1
|
|
iszv = size(p%precv)
|
|
call psb_bcast(ictxt,iszv)
|
|
if (iszv /= size(p%precv)) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='Inconsistent size of precv')
|
|
goto 9999
|
|
end if
|
|
|
|
if (iszv <= 0) then
|
|
! Is this really possible? probably not.
|
|
info=psb_err_from_subroutine_
|
|
ch_err='size bpv'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
!
|
|
! Number of levels = 1
|
|
!
|
|
if (iszv == 1) then
|
|
!
|
|
! Check on the iprcparm contents: they should be the same
|
|
! on all processes.
|
|
!
|
|
if (me == psb_root_) ipv(:) = p%precv(1)%iprcparm(:)
|
|
call psb_bcast(ictxt,ipv)
|
|
if (any(ipv(:) /= p%precv(1)%iprcparm(:) )) then
|
|
write(debug_unit,*) me,name,&
|
|
&': Inconsistent arguments among processes, forcing a default'
|
|
p%precv(1)%iprcparm(:) = ipv(:)
|
|
end if
|
|
!
|
|
! Remember to fix base_a and base_desc
|
|
!
|
|
call init_baseprec_av(p%precv(1)%prec,info)
|
|
p%precv(1)%base_a => a
|
|
p%precv(1)%base_desc => desc_a
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Base level precbuild.')
|
|
goto 9999
|
|
end if
|
|
!
|
|
! Build the base preconditioner
|
|
!
|
|
select case(p%precv(1)%prec%iprcparm(mld_sub_solve_))
|
|
case(mld_ilu_n_,mld_milu_n_)
|
|
call mld_check_def(p%precv(1)%prec%iprcparm(mld_sub_fillin_),&
|
|
& 'Level',0,is_legal_ml_lev)
|
|
case(mld_ilu_t_)
|
|
call mld_check_def(p%precv(1)%prec%rprcparm(mld_sub_iluthrs_),&
|
|
& 'Eps',dzero,is_legal_fact_thrs)
|
|
end select
|
|
call mld_check_def(p%precv(1)%iprcparm(mld_smoother_sweeps_),&
|
|
& 'Jacobi sweeps',1,is_legal_jac_sweeps)
|
|
|
|
!
|
|
! Test version for beginning of OO stuff.
|
|
!
|
|
if (allocated(p%precv(1)%sm)) then
|
|
call p%precv(1)%sm%free(info)
|
|
if (info == psb_success_) deallocate(p%precv(1)%sm,stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_dealloc_,name,a_err='One level preconditioner build.')
|
|
goto 9999
|
|
endif
|
|
end if
|
|
select case (p%precv(1)%prec%iprcparm(mld_smoother_type_))
|
|
case(mld_jac_, mld_bjac_)
|
|
allocate(mld_z_jac_smoother_type :: p%precv(1)%sm, stat=info)
|
|
case(mld_as_)
|
|
allocate(mld_z_as_smoother_type :: p%precv(1)%sm, stat=info)
|
|
case default
|
|
info = -1
|
|
end select
|
|
if (info /= psb_success_) then
|
|
write(0,*) ' Smoother allocation error',info,&
|
|
& p%precv(1)%prec%iprcparm(mld_smoother_type_)
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='One level preconditioner build.')
|
|
goto 9999
|
|
endif
|
|
call p%precv(1)%sm%set(mld_sub_restr_,p%precv(1)%prec%iprcparm(mld_sub_restr_),info)
|
|
call p%precv(1)%sm%set(mld_sub_prol_,p%precv(1)%prec%iprcparm(mld_sub_prol_),info)
|
|
call p%precv(1)%sm%set(mld_sub_ovr_,p%precv(1)%prec%iprcparm(mld_sub_ovr_),info)
|
|
|
|
select case (p%precv(1)%prec%iprcparm(mld_sub_solve_))
|
|
case(mld_ilu_n_,mld_milu_n_,mld_ilu_t_)
|
|
allocate(mld_z_ilu_solver_type :: p%precv(1)%sm%sv, stat=info)
|
|
if (info == psb_success_) call p%precv(1)%sm%sv%set(mld_sub_solve_,&
|
|
& p%precv(1)%prec%iprcparm(mld_sub_solve_),info)
|
|
if (info == psb_success_) call p%precv(1)%sm%sv%set(mld_sub_fillin_,&
|
|
& p%precv(1)%prec%iprcparm(mld_sub_fillin_),info)
|
|
if (info == psb_success_) call p%precv(1)%sm%sv%set(mld_sub_iluthrs_,&
|
|
& p%precv(1)%prec%rprcparm(mld_sub_iluthrs_),info)
|
|
case(mld_diag_scale_)
|
|
allocate(mld_z_diag_solver_type :: p%precv(1)%sm%sv, stat=info)
|
|
case default
|
|
info = -1
|
|
end select
|
|
|
|
if (info /= psb_success_) then
|
|
write(0,*) ' Solver allocation error',info,&
|
|
& p%precv(1)%prec%iprcparm(mld_sub_solve_)
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='One level preconditioner build.')
|
|
goto 9999
|
|
endif
|
|
|
|
call p%precv(1)%sm%build(a,desc_a,upd_,info)
|
|
if (info /= psb_success_) then
|
|
write(0,*) ' Smoother build error',info
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='One level preconditioner build.')
|
|
goto 9999
|
|
endif
|
|
|
|
!
|
|
! Number of levels > 1
|
|
!
|
|
else if (iszv > 1) then
|
|
!
|
|
! Build the multilevel preconditioner
|
|
!
|
|
call mld_mlprec_bld(a,desc_a,p,info)
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Multilevel preconditioner build.')
|
|
goto 9999
|
|
endif
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act.eq.psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
contains
|
|
|
|
subroutine init_baseprec_av(p,info)
|
|
type(mld_zbaseprec_type), intent(inout) :: p
|
|
integer :: info
|
|
!!$ if (allocated(p%av)) then
|
|
!!$ if (size(p%av) /= mld_max_avsz_) then
|
|
!!$ deallocate(p%av,stat=info)
|
|
!!$ if (info /= psb_success_) return
|
|
!!$ endif
|
|
!!$ end if
|
|
!!$ if (.not.(allocated(p%av))) then
|
|
!!$ allocate(p%av(mld_max_avsz_),stat=info)
|
|
!!$ if (info /= psb_success_) return
|
|
!!$ end if
|
|
!!$ do k=1,size(p%av)
|
|
!!$ call psb_nullify_sp(p%av(k))
|
|
!!$ end do
|
|
|
|
end subroutine init_baseprec_av
|
|
|
|
end subroutine mld_zprecbld
|