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amg4psblas/mlprec/impl/level/mld_s_base_onelev_build.f90

123 lines
4.5 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
! 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_s_base_onelev_build(lv,info,amold,vmold,imold)
use psb_base_mod
use mld_s_onelev_mod, mld_protect_name => mld_s_base_onelev_build
implicit none
class(mld_s_onelev_type), target, intent(inout) :: lv
integer(psb_ipk_), intent(out) :: info
class(psb_s_base_sparse_mat), intent(in), optional :: amold
class(psb_s_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
! Local
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz, casize
integer(psb_ipk_) :: ictxt, me, np
integer(psb_ipk_) :: ipv(mld_ifpsz_), val
integer(psb_ipk_) :: int_err(5)
integer(psb_ipk_) :: debug_level, debug_unit
character(len=20) :: name, ch_err
name = 'mld_onelev_build'
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()
if (.not.associated(lv%base_desc)) then
info = psb_err_internal_error_
call psb_errpush(info,name,&
& a_err='Unassociated base DESC')
goto 9999
end if
info = psb_success_
int_err(1) = 0
ictxt = lv%base_desc%get_ctxt()
call psb_info(ictxt,me,np)
if (.not.allocated(lv%sm)) then
!! Error: should have called mld_dprecinit
info=3111
call psb_errpush(info,name)
goto 9999
end if
if (.not.allocated(lv%sm%sv)) then
!! Error: should have called mld_dprecinit
info=3111
call psb_errpush(info,name)
goto 9999
end if
lv%ac_nz_loc = lv%ac%get_nzeros()
lv%ac_nz_tot = lv%ac_nz_loc
call psb_sum(ictxt,lv%ac_nz_tot)
! end do
if (debug_level >= psb_debug_outer_) &
& write(debug_unit,*) me,' ',trim(name),&
& 'Calling mlprcbld at level ',i
call mld_check_def(lv%parms%sweeps_pre,&
& 'Jacobi sweeps',izero,is_int_non_negative)
call mld_check_def(lv%parms%sweeps_post,&
& 'Jacobi sweeps',izero,is_int_non_negative)
call lv%sm%build(lv%base_a,lv%base_desc,&
& info,amold=amold,vmold=vmold,imold=imold)
if (info == 0) then
if (allocated(lv%sm2a)) then
call lv%sm2a%build(lv%base_a,lv%base_desc,info,&
& amold=amold,vmold=vmold,imold=imold)
lv%sm2 => lv%sm2a
else
lv%sm2 => lv%sm
end if
end if
if (info /=0) then
info = psb_err_internal_error_
call psb_errpush(info,name,&
& a_err='Smoother bld error')
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine mld_s_base_onelev_build