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.
640 lines
21 KiB
Fortran
640 lines
21 KiB
Fortran
!
|
|
!
|
|
! AMG4PSBLAS version 1.0
|
|
! Algebraic Multigrid Package
|
|
! based on PSBLAS (Parallel Sparse BLAS version 3.7)
|
|
!
|
|
! (C) Copyright 2021
|
|
!
|
|
! Salvatore Filippone
|
|
! Pasqua D'Ambra
|
|
! Fabio Durastante
|
|
!
|
|
! 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 AMG4PSBLAS 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 AMG4PSBLAS 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: amg_d_hierarchy_bld.f90
|
|
!
|
|
! Subroutine: amg_d_hierarchy_bld
|
|
! Version: real
|
|
!
|
|
! This routine builds the preconditioner according to the requirements made by
|
|
! the user trough the subroutines amg_precinit and amg_precset.
|
|
!
|
|
! A multilevel preconditioner is regarded as an array of 'one-level' data structures,
|
|
! each containing the part of the preconditioner associated to a certain level,
|
|
! (for more details see the description of amg_Tonelev_type in amg_prec_type.f90).
|
|
! The levels are numbered in increasing order starting from the finest one, i.e.
|
|
! level 1 is the finest level. No transfer operators are associated to level 1.
|
|
!
|
|
!
|
|
! Arguments:
|
|
! a - type(psb_dspmat_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(amg_dprec_type), input/output.
|
|
! The preconditioner data structure; upon exit it contains
|
|
! the multilevel hierarchy of prolongators, restrictors
|
|
! and coarse matrices.
|
|
! info - integer, output.
|
|
! Error code.
|
|
!
|
|
subroutine amg_d_hierarchy_bld(a,desc_a,prec,info)
|
|
|
|
use psb_base_mod
|
|
use amg_d_inner_mod
|
|
use amg_d_prec_mod, amg_protect_name => amg_d_hierarchy_bld
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
type(psb_dspmat_type),intent(in), target :: a
|
|
type(psb_desc_type), intent(inout), target :: desc_a
|
|
class(amg_dprec_type),intent(inout),target :: prec
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
! Local Variables
|
|
type(psb_ctxt_type) :: ctxt
|
|
integer(psb_ipk_) :: me,np
|
|
integer(psb_ipk_) :: err,i,k, err_act, iszv, newsz,&
|
|
& nplevs, mxplevs
|
|
integer(psb_lpk_) :: iaggsize, casize, mncsize, mncszpp
|
|
real(psb_dpk_) :: mnaggratio, sizeratio, athresh, aomega
|
|
class(amg_d_base_smoother_type), allocatable :: coarse_sm, med_sm, &
|
|
& med_sm2, coarse_sm2
|
|
class(amg_d_base_aggregator_type), allocatable :: tmp_aggr
|
|
type(amg_dml_parms) :: medparms, coarseparms
|
|
integer(psb_lpk_), allocatable :: ilaggr(:), nlaggr(:)
|
|
type(psb_ldspmat_type) :: op_prol
|
|
type(amg_d_onelev_type), allocatable :: tprecv(:)
|
|
integer(psb_ipk_) :: debug_level, debug_unit
|
|
character(len=20) :: name, ch_err
|
|
integer(psb_ipk_), save :: idx_bldtp=-1, idx_matasb=-1
|
|
logical, parameter :: do_timings=.false.
|
|
|
|
info=psb_success_
|
|
err=0
|
|
call psb_erractionsave(err_act)
|
|
if (psb_errstatus_fatal()) then
|
|
info = psb_err_internal_error_; goto 9999
|
|
end if
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
|
|
name = 'amg_d_hierarchy_bld'
|
|
info = psb_success_
|
|
ctxt = desc_a%get_context()
|
|
call psb_info(ctxt, me, np)
|
|
prec%ctxt = ctxt
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Entering '
|
|
if ((do_timings).and.(idx_bldtp==-1)) &
|
|
& idx_bldtp = psb_get_timer_idx("BLD_HIER: bld_tprol")
|
|
if ((do_timings).and.(idx_matasb==-1)) &
|
|
& idx_matasb = psb_get_timer_idx("BLD_HIER: mmat_asb")
|
|
!
|
|
|
|
if (.not.allocated(prec%precv)) then
|
|
!! Error: should have called amg_dprecinit
|
|
info=3111
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
!
|
|
! Check to ensure all procs have the same
|
|
!
|
|
newsz = -1
|
|
mxplevs = prec%ag_data%max_levs
|
|
mnaggratio = prec%ag_data%min_cr_ratio
|
|
mncsize = prec%ag_data%min_coarse_size
|
|
mncszpp = prec%ag_data%min_coarse_size_per_process
|
|
iszv = size(prec%precv)
|
|
call psb_bcast(ctxt,iszv)
|
|
call psb_bcast(ctxt,mncsize)
|
|
call psb_bcast(ctxt,mncszpp)
|
|
call psb_bcast(ctxt,mxplevs)
|
|
call psb_bcast(ctxt,mnaggratio)
|
|
if (mncsize /= prec%ag_data%min_coarse_size) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='Inconsistent min_coarse_size')
|
|
goto 9999
|
|
end if
|
|
if (mncszpp /= prec%ag_data%min_coarse_size_per_process) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='Inconsistent min_coarse_size_per_process')
|
|
goto 9999
|
|
end if
|
|
if (mxplevs /= prec%ag_data%max_levs) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='Inconsistent max_levs')
|
|
goto 9999
|
|
end if
|
|
if (mnaggratio /= prec%ag_data%min_cr_ratio) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='Inconsistent min_cr_ratio')
|
|
goto 9999
|
|
end if
|
|
if (iszv /= size(prec%precv)) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='Inconsistent size of precv')
|
|
goto 9999
|
|
end if
|
|
|
|
if (iszv < 1) then
|
|
!
|
|
! This is wrong, cannot be size <1
|
|
!
|
|
info=psb_err_from_subroutine_
|
|
ch_err='size bpv'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
endif
|
|
if (iszv == 1) then
|
|
!
|
|
! This is OK, since it may be called by the user even if there
|
|
! is only one level
|
|
!
|
|
prec%precv(1)%base_a => a
|
|
prec%precv(1)%base_desc => desc_a
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
endif
|
|
|
|
!
|
|
! The strategy:
|
|
! 1. The maximum number of levels should be already encoded in the
|
|
! size of the array;
|
|
! 2. If the user did not specify anything, then a default coarse size
|
|
! is generated, and the number of levels is set to the maximum;
|
|
! 3. If the size of the array is different from target number of levels,
|
|
! reallocate;
|
|
! 4. Build the matrix hierarchy, stopping early if either the target
|
|
! coarse size is hit, or the gain falls below the min_cr_ratio
|
|
! threshold.
|
|
!
|
|
if ((mncszpp < 0).and.(mncsize<0)) then
|
|
mncszpp = 200
|
|
prec%ag_data%min_coarse_size_per_process = mncszpp
|
|
end if
|
|
if (mncszpp > 0) then
|
|
casize = mncszpp*np
|
|
if (casize > huge(ione)) casize = huge(ione)
|
|
else
|
|
if (mncsize < np) then
|
|
if (me == 0) write(0,*) &
|
|
& 'Warning: resetting coarse size to NP (1 variable per process)'
|
|
mncsize = np
|
|
end if
|
|
casize = mncsize
|
|
end if
|
|
prec%ag_data%target_coarse_size = casize
|
|
|
|
nplevs = max(itwo,mxplevs)
|
|
|
|
!
|
|
! The coarse parameters will be needed later
|
|
!
|
|
coarseparms = prec%precv(iszv)%parms
|
|
call save_smoothers(prec%precv(iszv),coarse_sm,coarse_sm2,info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Base level precbuild.')
|
|
goto 9999
|
|
end if
|
|
!
|
|
! First set desired number of levels
|
|
!
|
|
if (iszv /= nplevs) then
|
|
allocate(tprecv(nplevs),stat=info)
|
|
! First all existing levels
|
|
do i=1, min(iszv,nplevs) - 1
|
|
if (info == 0) tprecv(i)%parms = prec%precv(i)%parms
|
|
if (info == 0) call restore_smoothers(tprecv(i),&
|
|
& prec%precv(i)%sm,prec%precv(i)%sm2a,info)
|
|
if (info == 0) call move_alloc(prec%precv(i)%aggr,tprecv(i)%aggr)
|
|
end do
|
|
if (iszv < nplevs) then
|
|
! Further intermediates, if needed
|
|
allocate(tmp_aggr,source=tprecv(iszv-1)%aggr,stat=info)
|
|
medparms = prec%precv(iszv-1)%parms
|
|
call save_smoothers(prec%precv(iszv-1),med_sm,med_sm2,info)
|
|
do i=iszv, nplevs - 1
|
|
if (info == 0) tprecv(i)%parms = medparms
|
|
if (info == 0) call restore_smoothers(tprecv(i),med_sm,med_sm2,info)
|
|
if ((info == 0).and..not.allocated(tprecv(i)%aggr))&
|
|
& allocate(tprecv(i)%aggr,source=tmp_aggr,stat=info)
|
|
end do
|
|
deallocate(tmp_aggr,stat=info)
|
|
end if
|
|
|
|
! Then coarse
|
|
if (info == 0) tprecv(nplevs)%parms = coarseparms
|
|
if (info == 0) call restore_smoothers(tprecv(nplevs),coarse_sm,coarse_sm2,info)
|
|
if (info == 0) then
|
|
if (nplevs <= iszv) then
|
|
allocate(tprecv(nplevs)%aggr,source=prec%precv(nplevs)%aggr,stat=info)
|
|
else
|
|
allocate(tmp_aggr,source=tprecv(nplevs-1)%aggr,stat=info)
|
|
call move_alloc(tmp_aggr,tprecv(nplevs)%aggr)
|
|
end if
|
|
end if
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,&
|
|
& a_err='prec reallocation')
|
|
goto 9999
|
|
endif
|
|
|
|
do i=1,iszv
|
|
call prec%precv(i)%free(info)
|
|
end do
|
|
call move_alloc(tprecv,prec%precv)
|
|
iszv = size(prec%precv)
|
|
end if
|
|
|
|
!
|
|
! Finest level first; create a GEN_BLOCK
|
|
! copy of the descriptor.
|
|
!
|
|
prec%precv(1)%base_a => a
|
|
call psb_cd_renum_block(desc_a,prec%precv(1)%desc_ac,info)
|
|
prec%precv(1)%base_desc => prec%precv(1)%desc_ac
|
|
newsz = 0
|
|
array_build_loop: do i=2, iszv
|
|
!
|
|
! Check on the iprcparm contents: they should be the same
|
|
! on all processes.
|
|
!
|
|
call psb_bcast(ctxt,prec%precv(i)%parms)
|
|
|
|
!
|
|
! Sanity checks on the parameters
|
|
!
|
|
if (i<iszv) then
|
|
!
|
|
! A replicated matrix only makes sense at the coarsest level
|
|
!
|
|
call amg_check_def(prec%precv(i)%parms%coarse_mat,'Coarse matrix',&
|
|
& amg_distr_mat_,is_distr_ml_coarse_mat)
|
|
end if
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Calling mlprcbld at level ',i
|
|
!
|
|
! Build the mapping between levels i-1 and i and the matrix
|
|
! at level i
|
|
!
|
|
if (do_timings) call psb_tic(idx_bldtp)
|
|
if (info == psb_success_)&
|
|
& call prec%precv(i)%bld_tprol(prec%precv(i-1)%base_a,&
|
|
& prec%precv(i-1)%base_desc,&
|
|
& ilaggr,nlaggr,op_prol,prec%ag_data,info)
|
|
if (do_timings) call psb_toc(idx_bldtp)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Map build')
|
|
goto 9999
|
|
endif
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Return from ',i,' call to bld_tprol', info
|
|
!
|
|
! Save op_prol just in case
|
|
!
|
|
call op_prol%clone(prec%precv(i)%tprol,info)
|
|
!
|
|
! Check for early termination of aggregation loop.
|
|
!
|
|
iaggsize = sum(nlaggr)
|
|
|
|
sizeratio = iaggsize
|
|
if (i==2) then
|
|
sizeratio = desc_a%get_global_rows()/sizeratio
|
|
else
|
|
sizeratio = sum(prec%precv(i-1)%linmap%naggr)/sizeratio
|
|
end if
|
|
prec%precv(i)%szratio = sizeratio
|
|
|
|
if (iaggsize <= casize) newsz = i
|
|
if (i == iszv) newsz = i
|
|
|
|
if (i>2) then
|
|
if (sizeratio < mnaggratio) then
|
|
if (sizeratio > 1) then
|
|
newsz = i
|
|
else
|
|
!
|
|
! We are not gaining
|
|
!
|
|
newsz = i-1
|
|
end if
|
|
end if
|
|
|
|
if (all(nlaggr == prec%precv(i-1)%linmap%naggr)) then
|
|
newsz=i-1
|
|
if (me == 0) then
|
|
write(debug_unit,*) trim(name),&
|
|
&': Warning: aggregates from level ',&
|
|
& newsz
|
|
write(debug_unit,*) trim(name),&
|
|
&': to level ',&
|
|
& iszv,' coincide.'
|
|
write(debug_unit,*) trim(name),&
|
|
&': Number of levels actually used :',newsz
|
|
write(debug_unit,*)
|
|
end if
|
|
end if
|
|
end if
|
|
call psb_bcast(ctxt,newsz)
|
|
|
|
if (newsz > 0) then
|
|
!
|
|
! This is awkward, we are saving the aggregation parms, for the sake
|
|
! of distr/repl matrix at coarse level. Should be rethought.
|
|
!
|
|
athresh = prec%precv(newsz)%parms%aggr_thresh
|
|
aomega = prec%precv(newsz)%parms%aggr_omega_val
|
|
if (info == 0) prec%precv(newsz)%parms = coarseparms
|
|
prec%precv(newsz)%parms%aggr_thresh = athresh
|
|
prec%precv(newsz)%parms%aggr_omega_val = aomega
|
|
|
|
if (info == 0) call restore_smoothers(prec%precv(newsz),&
|
|
& coarse_sm,coarse_sm2,info)
|
|
if (newsz < i) then
|
|
!
|
|
! We are going back and revisit a previous leve;
|
|
! recover the aggregation.
|
|
!
|
|
ilaggr = prec%precv(newsz)%linmap%iaggr
|
|
nlaggr = prec%precv(newsz)%linmap%naggr
|
|
call prec%precv(newsz)%tprol%clone(op_prol,info)
|
|
end if
|
|
if (do_timings) call psb_tic(idx_matasb)
|
|
if (info == psb_success_) call prec%precv(newsz)%mat_asb( &
|
|
& prec%precv(newsz-1)%base_a,prec%precv(newsz-1)%base_desc,&
|
|
& ilaggr,nlaggr,op_prol,info)
|
|
if (do_timings) call psb_toc(idx_matasb)
|
|
if (info /= 0) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Mat asb')
|
|
goto 9999
|
|
endif
|
|
exit array_build_loop
|
|
else
|
|
if (do_timings) call psb_tic(idx_matasb)
|
|
if (info == psb_success_) call prec%precv(i)%mat_asb(&
|
|
& prec%precv(i-1)%base_a,prec%precv(i-1)%base_desc,&
|
|
& ilaggr,nlaggr,op_prol,info)
|
|
if (do_timings) call psb_toc(idx_matasb)
|
|
end if
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Map build')
|
|
goto 9999
|
|
endif
|
|
if (i<iszv) call prec%precv(i)%update_aggr(prec%precv(i+1),info)
|
|
|
|
end do array_build_loop
|
|
|
|
if (newsz > 0) then
|
|
!
|
|
! We exited early from the build loop, need to fix
|
|
! the size.
|
|
!
|
|
allocate(tprecv(newsz),stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,&
|
|
& a_err='prec reallocation')
|
|
goto 9999
|
|
endif
|
|
do i=1,newsz
|
|
call prec%precv(i)%move_alloc(tprecv(i),info)
|
|
end do
|
|
do i=newsz+1, iszv
|
|
call prec%precv(i)%free(info)
|
|
end do
|
|
call move_alloc(tprecv,prec%precv)
|
|
! Ignore errors from transfer
|
|
info = psb_success_
|
|
!
|
|
! Restart
|
|
iszv = newsz
|
|
! Fix the pointers, but the level 1 should
|
|
! be treated differently
|
|
if (.not.associated(prec%precv(1)%base_desc,desc_a)) then
|
|
prec%precv(1)%base_desc => prec%precv(1)%desc_ac
|
|
end if
|
|
do i=2, iszv
|
|
prec%precv(i)%base_a => prec%precv(i)%ac
|
|
prec%precv(i)%base_desc => prec%precv(i)%desc_ac
|
|
! This is needed when the linmap object has been built
|
|
! reusing the base_desc descriptor through a pointer.
|
|
! With PSBLAS 4 we will have a better solution
|
|
if (associated(prec%precv(i)%linmap%p_desc_U)) &
|
|
& prec%precv(i)%linmap%p_desc_U => prec%precv(i-1)%base_desc
|
|
if (associated(prec%precv(i)%linmap%p_desc_V))&
|
|
& prec%precv(i)%linmap%p_desc_V => prec%precv(i)%base_desc
|
|
end do
|
|
end if
|
|
|
|
|
|
!write(0,*) 'Should we remap? '
|
|
if (amg_get_do_remap().and.(np>=4)) then
|
|
write(0,*) 'Going for remapping '
|
|
if (.true.) then
|
|
associate(lv=>prec%precv(iszv), rmp => prec%precv(iszv)%remap_data)
|
|
call lv%desc_ac%clone(rmp%desc_ac_pre_remap,info)
|
|
call lv%ac%clone(rmp%ac_pre_remap,info)
|
|
if (np >= 8) then
|
|
call psb_remap(np/4,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
|
|
& rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
|
|
else
|
|
call psb_remap(np/2,rmp%desc_ac_pre_remap,rmp%ac_pre_remap,&
|
|
& rmp%idest,rmp%isrc,rmp%nrsrc,rmp%naggr,lv%desc_ac,lv%ac,info)
|
|
end if
|
|
write(0,*) me,' Out of remapping ',rmp%desc_ac_pre_remap%get_fmt(),' ',&
|
|
& lv%desc_ac%get_fmt(),sum(lv%linmap%naggr),sum(rmp%naggr)
|
|
lv%linmap%naggr(:) = rmp%naggr(:)
|
|
lv%linmap%p_desc_V => rmp%desc_ac_pre_remap
|
|
lv%base_a => lv%ac
|
|
lv%base_desc => lv%desc_ac
|
|
end associate
|
|
end if
|
|
end if
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Internal hierarchy build' )
|
|
goto 9999
|
|
endif
|
|
|
|
iszv = size(prec%precv)
|
|
|
|
call prec%cmp_complexity()
|
|
call prec%cmp_avg_cr()
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Exiting with',iszv,' levels'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
|
|
return
|
|
|
|
contains
|
|
|
|
#if ( __GNUC__ == 13 && __GNUC_MINOR__ == 3)
|
|
! gfortran 13.3.0 generates a strange error here with MOLD
|
|
! moving to SOURCE but only for this version, since it's heavier
|
|
subroutine save_smoothers(level,save1, save2,info)
|
|
type(amg_d_onelev_type), intent(inout) :: level
|
|
class(amg_d_base_smoother_type), allocatable , intent(inout) :: save1, save2
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = 0
|
|
if (allocated(save1)) then
|
|
call save1%free(info)
|
|
if (info == 0) deallocate(save1,stat=info)
|
|
if (info /= 0) return
|
|
end if
|
|
if (allocated(save2)) then
|
|
call save2%free(info)
|
|
if (info == 0) deallocate(save2,stat=info)
|
|
if (info /= 0) return
|
|
end if
|
|
allocate(save1, source=level%sm,stat=info)
|
|
if (info == 0) call level%sm%clone_settings(save1,info)
|
|
if ((info == 0).and.allocated(level%sm2a)) then
|
|
allocate(save2, source=level%sm2a,stat=info)
|
|
if (info == 0) call level%sm2a%clone_settings(save2,info)
|
|
end if
|
|
|
|
return
|
|
end subroutine save_smoothers
|
|
|
|
subroutine restore_smoothers(level,save1, save2,info)
|
|
type(amg_d_onelev_type), intent(inout), target :: level
|
|
class(amg_d_base_smoother_type), allocatable, intent(inout) :: save1, save2
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = 0
|
|
|
|
if (allocated(level%sm)) then
|
|
if (info == 0) call level%sm%free(info)
|
|
if (info == 0) deallocate(level%sm,stat=info)
|
|
end if
|
|
if (allocated(save1)) then
|
|
if (info == 0) allocate(level%sm,source=save1,stat=info)
|
|
if (info == 0) call save1%clone_settings(level%sm,info)
|
|
end if
|
|
|
|
if (info /= 0) return
|
|
|
|
if (allocated(level%sm2a)) then
|
|
if (info == 0) call level%sm2a%free(info)
|
|
if (info == 0) deallocate(level%sm2a,stat=info)
|
|
end if
|
|
if (allocated(save2)) then
|
|
if (info == 0) allocate(level%sm2a,source=save2,stat=info)
|
|
if (info == 0) call save2%clone_settings(level%sm2a,info)
|
|
if (info == 0) level%sm2 => level%sm2a
|
|
else
|
|
if (allocated(level%sm)) level%sm2 => level%sm
|
|
end if
|
|
|
|
return
|
|
end subroutine restore_smoothers
|
|
|
|
#else
|
|
|
|
subroutine save_smoothers(level,save1, save2,info)
|
|
type(amg_d_onelev_type), intent(inout) :: level
|
|
class(amg_d_base_smoother_type), allocatable , intent(inout) :: save1, save2
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = 0
|
|
if (allocated(save1)) then
|
|
call save1%free(info)
|
|
if (info == 0) deallocate(save1,stat=info)
|
|
if (info /= 0) return
|
|
end if
|
|
if (allocated(save2)) then
|
|
call save2%free(info)
|
|
if (info == 0) deallocate(save2,stat=info)
|
|
if (info /= 0) return
|
|
end if
|
|
allocate(save1, mold=level%sm,stat=info)
|
|
if (info == 0) call level%sm%clone_settings(save1,info)
|
|
if ((info == 0).and.allocated(level%sm2a)) then
|
|
allocate(save2, mold=level%sm2a,stat=info)
|
|
if (info == 0) call level%sm2a%clone_settings(save2,info)
|
|
end if
|
|
|
|
return
|
|
end subroutine save_smoothers
|
|
|
|
subroutine restore_smoothers(level,save1, save2,info)
|
|
type(amg_d_onelev_type), intent(inout), target :: level
|
|
class(amg_d_base_smoother_type), allocatable, intent(inout) :: save1, save2
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = 0
|
|
|
|
if (allocated(level%sm)) then
|
|
if (info == 0) call level%sm%free(info)
|
|
if (info == 0) deallocate(level%sm,stat=info)
|
|
end if
|
|
if (allocated(save1)) then
|
|
if (info == 0) allocate(level%sm,mold=save1,stat=info)
|
|
if (info == 0) call save1%clone_settings(level%sm,info)
|
|
end if
|
|
|
|
if (info /= 0) return
|
|
|
|
if (allocated(level%sm2a)) then
|
|
if (info == 0) call level%sm2a%free(info)
|
|
if (info == 0) deallocate(level%sm2a,stat=info)
|
|
end if
|
|
if (allocated(save2)) then
|
|
if (info == 0) allocate(level%sm2a,mold=save2,stat=info)
|
|
if (info == 0) call save2%clone_settings(level%sm2a,info)
|
|
if (info == 0) level%sm2 => level%sm2a
|
|
else
|
|
if (allocated(level%sm)) level%sm2 => level%sm
|
|
end if
|
|
|
|
return
|
|
end subroutine restore_smoothers
|
|
#endif
|
|
end subroutine amg_d_hierarchy_bld
|