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.
194 lines
6.5 KiB
Fortran
194 lines
6.5 KiB
Fortran
!
|
|
!
|
|
! MLD2P4 version 2.1
|
|
! MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
! based on PSBLAS (Parallel Sparse BLAS version 3.5)
|
|
!
|
|
! (C) Copyright 2008, 2010, 2012, 2015, 2017
|
|
!
|
|
! Salvatore Filippone Cranfield University, UK
|
|
! Ambra Abdullahi Hassan University of Rome Tor Vergata, IT
|
|
! Alfredo Buttari CNRS-IRIT, Toulouse, FR
|
|
! Pasqua D'Ambra IAC-CNR, Naples, IT
|
|
! Daniela di Serafino University of Campania "L. Vanvitelli", Caserta, IT
|
|
!
|
|
! 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.
|
|
!
|
|
!
|
|
subroutine mld_z_ilu_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
|
|
|
|
use psb_base_mod
|
|
use mld_z_ilu_solver, mld_protect_name => mld_z_ilu_solver_bld
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
type(psb_zspmat_type), intent(in), target :: a
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
|
class(mld_z_ilu_solver_type), intent(inout) :: sv
|
|
integer(psb_ipk_), intent(out) :: info
|
|
type(psb_zspmat_type), intent(in), target, optional :: b
|
|
class(psb_z_base_sparse_mat), intent(in), optional :: amold
|
|
class(psb_z_base_vect_type), intent(in), optional :: vmold
|
|
class(psb_i_base_vect_type), intent(in), optional :: imold
|
|
! Local variables
|
|
integer(psb_ipk_) :: n_row,n_col, nrow_a, nztota
|
|
!!$ complex(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
|
integer(psb_ipk_) :: ictxt,np,me,i, err_act, debug_unit, debug_level
|
|
character(len=20) :: name='z_ilu_solver_bld', ch_err
|
|
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
ictxt = desc_a%get_context()
|
|
call psb_info(ictxt, me, np)
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),' start'
|
|
|
|
|
|
n_row = desc_a%get_local_rows()
|
|
|
|
nrow_a = a%get_nrows()
|
|
nztota = a%get_nzeros()
|
|
if (present(b)) then
|
|
nztota = nztota + b%get_nzeros()
|
|
end if
|
|
|
|
call sv%l%csall(n_row,n_row,info,nztota)
|
|
if (info == psb_success_) call sv%u%csall(n_row,n_row,info,nztota)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_sp_all'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if (allocated(sv%d)) then
|
|
if (size(sv%d) < n_row) then
|
|
deallocate(sv%d)
|
|
endif
|
|
endif
|
|
if (.not.allocated(sv%d)) allocate(sv%d(n_row),stat=info)
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
|
|
goto 9999
|
|
endif
|
|
|
|
|
|
select case(sv%fact_type)
|
|
|
|
case (mld_ilu_t_)
|
|
!
|
|
! ILU(k,t)
|
|
!
|
|
select case(sv%fill_in)
|
|
|
|
case(:-1)
|
|
! Error: fill-in <= -1
|
|
call psb_errpush(psb_err_input_value_invalid_i_,&
|
|
& name,i_err=(/ithree,sv%fill_in,izero,izero,izero/))
|
|
goto 9999
|
|
|
|
case(0:)
|
|
! Fill-in >= 0
|
|
call mld_ilut_fact(sv%fill_in,sv%thresh,&
|
|
& a, sv%l,sv%u,sv%d,info,blck=b)
|
|
end select
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='mld_ilut_fact'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
case(mld_ilu_n_,mld_milu_n_)
|
|
!
|
|
! ILU(k) and MILU(k)
|
|
!
|
|
select case(sv%fill_in)
|
|
case(:-1)
|
|
! Error: fill-in <= -1
|
|
call psb_errpush(psb_err_input_value_invalid_i_,&
|
|
& name,i_err=(/ithree,sv%fill_in,izero,izero,izero/))
|
|
goto 9999
|
|
case(0)
|
|
! Fill-in 0
|
|
! Separate implementation of ILU(0) for better performance.
|
|
! There seems to be a problem with the separate implementation of MILU(0),
|
|
! contained into mld_ilu0_fact. This must be investigated. For the time being,
|
|
! resort to the implementation of MILU(k) with k=0.
|
|
if (sv%fact_type == mld_ilu_n_) then
|
|
call mld_ilu0_fact(sv%fact_type,a,sv%l,sv%u,&
|
|
& sv%d,info,blck=b)
|
|
else
|
|
call mld_iluk_fact(sv%fill_in,sv%fact_type,&
|
|
& a,sv%l,sv%u,sv%d,info,blck=b)
|
|
endif
|
|
case(1:)
|
|
! Fill-in >= 1
|
|
! The same routine implements both ILU(k) and MILU(k)
|
|
call mld_iluk_fact(sv%fill_in,sv%fact_type,&
|
|
& a,sv%l,sv%u,sv%d,info,blck=b)
|
|
end select
|
|
if (info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='mld_iluk_fact'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
! If we end up here, something was wrong up in the call chain.
|
|
info = psb_err_input_value_invalid_i_
|
|
call psb_errpush(psb_err_input_value_invalid_i_,name,&
|
|
& i_err=(/ithree,sv%fact_type,izero,izero,izero/))
|
|
goto 9999
|
|
|
|
end select
|
|
|
|
call sv%l%set_asb()
|
|
call sv%l%trim()
|
|
call sv%u%set_asb()
|
|
call sv%u%trim()
|
|
call sv%dv%bld(sv%d,mold=vmold)
|
|
|
|
if (present(amold)) then
|
|
call sv%l%cscnv(info,mold=amold)
|
|
call sv%u%cscnv(info,mold=amold)
|
|
end if
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),' end'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
|
|
return
|
|
end subroutine mld_z_ilu_solver_bld
|