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1346 lines
38 KiB
Fortran
1346 lines
38 KiB
Fortran
!!$
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!!$
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!!$ MLD2P4 version 2.1
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!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
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!!$ based on PSBLAS (Parallel Sparse BLAS version 3.4)
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!!$
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!!$ (C) Copyright 2008, 2010, 2012, 2015, 2017
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!!$
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!!$ Salvatore Filippone Cranfield University
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!!$ Ambra Abdullahi Hassan University of Rome Tor Vergata
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!!$ Alfredo Buttari CNRS-IRIT, Toulouse
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!!$ Pasqua D'Ambra ICAR-CNR, Naples
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!!$ Daniela di Serafino Second University of Naples
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the MLD2P4 group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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!
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!
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!
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!
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!
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!
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subroutine mld_c_as_smoother_check(sm,info)
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use psb_base_mod
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use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_check
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Implicit None
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! Arguments
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class(mld_c_as_smoother_type), intent(inout) :: sm
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integer, intent(out) :: info
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Integer :: err_act
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character(len=20) :: name='c_as_smoother_check'
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call psb_erractionsave(err_act)
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info = psb_success_
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call mld_check_def(sm%restr,&
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& 'Restrictor',psb_halo_,is_legal_restrict)
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call mld_check_def(sm%prol,&
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& 'Prolongator',psb_none_,is_legal_prolong)
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call mld_check_def(sm%novr,&
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& 'Overlap layers ',0,is_int_non_negative)
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if (allocated(sm%sv)) then
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call sm%sv%check(info)
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else
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info=3111
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call psb_errpush(info,name)
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goto 9999
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end if
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine mld_c_as_smoother_check
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subroutine mld_c_as_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
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use psb_base_mod
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use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_apply_vect
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implicit none
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_c_as_smoother_type), intent(inout) :: sm
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type(psb_c_vect_type),intent(inout) :: x
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type(psb_c_vect_type),intent(inout) :: y
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complex(psb_spk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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integer, intent(in) :: sweeps
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complex(psb_spk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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integer :: n_row,n_col, nrow_d, i
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complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
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complex(psb_spk_), allocatable :: vx(:)
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type(psb_c_vect_type) :: vtx, vty, vww
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integer :: ictxt,np,me, err_act,isz,int_err(5)
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character :: trans_
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character(len=20) :: name='c_as_smoother_apply', ch_err
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call psb_erractionsave(err_act)
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info = psb_success_
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ictxt = desc_data%get_context()
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call psb_info(ictxt,me,np)
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trans_ = psb_toupper(trans)
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select case(trans_)
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case('N')
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case('T')
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case('C')
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case default
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call psb_errpush(psb_err_iarg_invalid_i_,name)
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goto 9999
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end select
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if (.not.allocated(sm%sv)) then
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info = 1121
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call psb_errpush(info,name)
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goto 9999
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end if
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n_row = sm%desc_data%get_local_rows()
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n_col = sm%desc_data%get_local_cols()
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nrow_d = desc_data%get_local_rows()
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isz = max(n_row,N_COL)
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if ((6*isz) <= size(work)) then
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ww => work(1:isz)
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tx => work(isz+1:2*isz)
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ty => work(2*isz+1:3*isz)
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aux => work(3*isz+1:)
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else if ((4*isz) <= size(work)) then
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aux => work(1:)
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allocate(ww(isz),tx(isz),ty(isz),stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_alloc_request_,name,i_err=(/3*isz,0,0,0,0/),&
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& a_err='complex(psb_spk_)')
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goto 9999
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end if
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else if ((3*isz) <= size(work)) then
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ww => work(1:isz)
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tx => work(isz+1:2*isz)
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ty => work(2*isz+1:3*isz)
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allocate(aux(4*isz),stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_alloc_request_,name,i_err=(/4*isz,0,0,0,0/),&
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& a_err='complex(psb_spk_)')
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goto 9999
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end if
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else
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allocate(ww(isz),tx(isz),ty(isz),&
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&aux(4*isz),stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_alloc_request_,name,i_err=(/4*isz,0,0,0,0/),&
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& a_err='complex(psb_spk_)')
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goto 9999
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end if
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endif
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if ((sm%novr == 0).and.(sweeps == 1)) then
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!
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! Shortcut: in this case it's just the same
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! as Block Jacobi.
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!
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call sm%sv%apply(alpha,x,beta,y,desc_data,trans_,aux,info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,&
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& a_err='Error in sub_aply Jacobi Sweeps = 1')
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goto 9999
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endif
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else
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vx = x%get_vect()
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call psb_geall(vtx,sm%desc_data,info)
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call psb_geasb(vtx,sm%desc_data,info,mold=x%v)
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call psb_geall(vty,sm%desc_data,info)
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call psb_geasb(vty,sm%desc_data,info,mold=x%v)
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call psb_geall(vww,sm%desc_data,info)
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call psb_geasb(vww,sm%desc_data,info,mold=x%v)
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call vtx%set(czero)
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call vty%set(czero)
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call vww%set(czero)
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call vtx%set(vx(1:nrow_d))
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if (sweeps == 1) then
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select case(trans_)
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case('N')
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!
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! Get the overlap entries of tx (tx == x)
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!
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if (sm%restr == psb_halo_) then
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call psb_halo(vtx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_halo'
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goto 9999
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end if
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else if (sm%restr /= psb_none_) then
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call psb_errpush(psb_err_internal_error_,name,&
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& a_err='Invalid mld_sub_restr_')
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goto 9999
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end if
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case('T','C')
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!
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! With transpose, we have to do it here
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!
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select case (sm%prol)
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case(psb_none_)
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!
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! Do nothing
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case(psb_sum_)
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!
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! The transpose of sum is halo
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!
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call psb_halo(vtx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_halo'
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goto 9999
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end if
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case(psb_avg_)
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!
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! Tricky one: first we have to scale the overlap entries,
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! which we can do by assignind mode=0, i.e. no communication
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! (hence only scaling), then we do the halo
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!
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call psb_ovrl(vtx,sm%desc_data,info,&
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& update=psb_avg_,work=aux,mode=0)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_ovrl'
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goto 9999
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end if
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call psb_halo(vtx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_halo'
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goto 9999
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end if
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case default
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call psb_errpush(psb_err_internal_error_,name,&
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& a_err='Invalid mld_sub_prol_')
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goto 9999
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end select
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case default
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info=psb_err_iarg_invalid_i_
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int_err(1)=6
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ch_err(2:2)=trans
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goto 9999
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end select
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call sm%sv%apply(cone,vtx,czero,vty,sm%desc_data,trans_,aux,info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,&
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& a_err='Error in sub_aply Jacobi Sweeps = 1')
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goto 9999
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endif
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select case(trans_)
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case('N')
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select case (sm%prol)
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case(psb_none_)
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!
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! Would work anyway, but since it is supposed to do nothing ...
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! call psb_ovrl(ty,sm%desc_data,info,&
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! & update=sm%prol,work=aux)
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case(psb_sum_,psb_avg_)
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!
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! Update the overlap of ty
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!
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call psb_ovrl(vty,sm%desc_data,info,&
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& update=sm%prol,work=aux)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_ovrl'
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goto 9999
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end if
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case default
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call psb_errpush(psb_err_internal_error_,name,&
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& a_err='Invalid mld_sub_prol_')
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goto 9999
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end select
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case('T','C')
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!
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! With transpose, we have to do it here
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|
!
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if (sm%restr == psb_halo_) then
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call psb_ovrl(vty,sm%desc_data,info,&
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& update=psb_sum_,work=aux)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_ovrl'
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goto 9999
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end if
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else if (sm%restr /= psb_none_) then
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call psb_errpush(psb_err_internal_error_,name,&
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& a_err='Invalid mld_sub_restr_')
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goto 9999
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end if
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|
|
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case default
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info=psb_err_iarg_invalid_i_
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int_err(1)=6
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ch_err(2:2)=trans
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goto 9999
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end select
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|
|
|
|
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else if (sweeps > 1) then
|
|
|
|
!
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|
!
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! Apply prec%iprcparm(mld_smoother_sweeps_) sweeps of a block-Jacobi solver
|
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! to compute an approximate solution of a linear system.
|
|
!
|
|
!
|
|
call vty%set(czero)
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|
|
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do i=1, sweeps
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select case(trans_)
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case('N')
|
|
!
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! Get the overlap entries of tx (tx == x)
|
|
!
|
|
if (sm%restr == psb_halo_) then
|
|
call psb_halo(vtx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
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info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
else if (sm%restr /= psb_none_) then
|
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call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Invalid mld_sub_restr_')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
case('T','C')
|
|
!
|
|
! With transpose, we have to do it here
|
|
!
|
|
|
|
select case (sm%prol)
|
|
|
|
case(psb_none_)
|
|
!
|
|
! Do nothing
|
|
|
|
case(psb_sum_)
|
|
!
|
|
! The transpose of sum is halo
|
|
!
|
|
call psb_halo(vtx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
|
|
case(psb_avg_)
|
|
!
|
|
! Tricky one: first we have to scale the overlap entries,
|
|
! which we can do by assignind mode=0, i.e. no communication
|
|
! (hence only scaling), then we do the halo
|
|
!
|
|
call psb_ovrl(vtx,sm%desc_data,info,&
|
|
& update=psb_avg_,work=aux,mode=0)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
call psb_halo(vtx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Invalid mld_sub_prol_')
|
|
goto 9999
|
|
end select
|
|
|
|
|
|
case default
|
|
info=psb_err_iarg_invalid_i_
|
|
int_err(1)=6
|
|
ch_err(2:2)=trans
|
|
goto 9999
|
|
end select
|
|
!
|
|
! Compute Y(j+1) = D^(-1)*(X-ND*Y(j)), where D and ND are the
|
|
! block diagonal part and the remaining part of the local matrix
|
|
! and Y(j) is the approximate solution at sweep j.
|
|
!
|
|
call psb_geaxpby(cone,vtx,czero,vww,sm%desc_data,info)
|
|
call psb_spmm(-cone,sm%nd,vty,cone,vww,sm%desc_data,info,&
|
|
& work=aux,trans=trans_)
|
|
|
|
if (info /= psb_success_) exit
|
|
|
|
call sm%sv%apply(cone,vww,czero,vty,sm%desc_data,trans_,aux,info)
|
|
|
|
if (info /= psb_success_) exit
|
|
|
|
|
|
select case(trans_)
|
|
case('N')
|
|
|
|
select case (sm%prol)
|
|
|
|
case(psb_none_)
|
|
!
|
|
! Would work anyway, but since it is supposed to do nothing ...
|
|
! call psb_ovrl(ty,sm%desc_data,info,&
|
|
! & update=sm%prol,work=aux)
|
|
|
|
|
|
case(psb_sum_,psb_avg_)
|
|
!
|
|
! Update the overlap of ty
|
|
!
|
|
call psb_ovrl(vty,sm%desc_data,info,&
|
|
& update=sm%prol,work=aux)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Invalid mld_sub_prol_')
|
|
goto 9999
|
|
end select
|
|
|
|
case('T','C')
|
|
!
|
|
! With transpose, we have to do it here
|
|
!
|
|
if (sm%restr == psb_halo_) then
|
|
call psb_ovrl(vty,sm%desc_data,info,&
|
|
& update=psb_sum_,work=aux)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
else if (sm%restr /= psb_none_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Invalid mld_sub_restr_')
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
info=psb_err_iarg_invalid_i_
|
|
int_err(1)=6
|
|
ch_err(2:2)=trans
|
|
goto 9999
|
|
end select
|
|
end do
|
|
|
|
if (info /= psb_success_) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,&
|
|
& a_err='subsolve with Jacobi sweeps > 1')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
else
|
|
|
|
info = psb_err_iarg_neg_
|
|
call psb_errpush(info,name,&
|
|
& i_err=(/2,sweeps,0,0,0/))
|
|
goto 9999
|
|
|
|
|
|
end if
|
|
|
|
!
|
|
! Compute y = beta*y + alpha*ty (ty == K^(-1)*tx)
|
|
!
|
|
call psb_geaxpby(alpha,vty,beta,y,desc_data,info)
|
|
|
|
end if
|
|
|
|
|
|
if ((6*isz) <= size(work)) then
|
|
else if ((4*isz) <= size(work)) then
|
|
deallocate(ww,tx,ty)
|
|
else if ((3*isz) <= size(work)) then
|
|
deallocate(aux)
|
|
else
|
|
deallocate(ww,aux,tx,ty)
|
|
endif
|
|
call vww%free(info)
|
|
call vtx%free(info)
|
|
call vty%free(info)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine mld_c_as_smoother_apply_vect
|
|
|
|
|
|
subroutine mld_c_as_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,info)
|
|
use psb_base_mod
|
|
use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_apply
|
|
implicit none
|
|
type(psb_desc_type), intent(in) :: desc_data
|
|
class(mld_c_as_smoother_type), intent(in) :: sm
|
|
complex(psb_spk_),intent(inout) :: x(:)
|
|
complex(psb_spk_),intent(inout) :: y(:)
|
|
complex(psb_spk_),intent(in) :: alpha,beta
|
|
character(len=1),intent(in) :: trans
|
|
integer, intent(in) :: sweeps
|
|
complex(psb_spk_),target, intent(inout) :: work(:)
|
|
integer, intent(out) :: info
|
|
|
|
integer :: n_row,n_col, nrow_d, i
|
|
complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
|
integer :: ictxt,np,me, err_act,isz,int_err(5)
|
|
character :: trans_
|
|
character(len=20) :: name='c_as_smoother_apply', ch_err
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_success_
|
|
ictxt = desc_data%get_context()
|
|
call psb_info (ictxt,me,np)
|
|
|
|
trans_ = psb_toupper(trans)
|
|
select case(trans_)
|
|
case('N')
|
|
case('T')
|
|
case('C')
|
|
case default
|
|
call psb_errpush(psb_err_iarg_invalid_i_,name)
|
|
goto 9999
|
|
end select
|
|
|
|
if (.not.allocated(sm%sv)) then
|
|
info = 1121
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
n_row = sm%desc_data%get_local_rows()
|
|
n_col = sm%desc_data%get_local_cols()
|
|
nrow_d = desc_data%get_local_rows()
|
|
isz=max(n_row,N_COL)
|
|
if ((6*isz) <= size(work)) then
|
|
ww => work(1:isz)
|
|
tx => work(isz+1:2*isz)
|
|
ty => work(2*isz+1:3*isz)
|
|
aux => work(3*isz+1:)
|
|
else if ((4*isz) <= size(work)) then
|
|
aux => work(1:)
|
|
allocate(ww(isz),tx(isz),ty(isz),stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_request_,name,i_err=(/3*isz,0,0,0,0/),&
|
|
& a_err='complex(psb_spk_)')
|
|
goto 9999
|
|
end if
|
|
else if ((3*isz) <= size(work)) then
|
|
ww => work(1:isz)
|
|
tx => work(isz+1:2*isz)
|
|
ty => work(2*isz+1:3*isz)
|
|
allocate(aux(4*isz),stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_request_,name,i_err=(/4*isz,0,0,0,0/),&
|
|
& a_err='complex(psb_spk_)')
|
|
goto 9999
|
|
end if
|
|
else
|
|
allocate(ww(isz),tx(isz),ty(isz),&
|
|
&aux(4*isz),stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_alloc_request_,name,i_err=(/4*isz,0,0,0,0/),&
|
|
& a_err='complex(psb_spk_)')
|
|
goto 9999
|
|
end if
|
|
|
|
endif
|
|
|
|
if ((sm%novr == 0).and.(sweeps == 1)) then
|
|
!
|
|
! Shortcut: in this case it's just the same
|
|
! as Block Jacobi.
|
|
!
|
|
call sm%sv%apply(alpha,x,beta,y,desc_data,trans_,aux,info)
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Error in sub_aply Jacobi Sweeps = 1')
|
|
goto 9999
|
|
endif
|
|
|
|
else
|
|
|
|
|
|
tx(1:nrow_d) = x(1:nrow_d)
|
|
tx(nrow_d+1:isz) = czero
|
|
|
|
|
|
if (sweeps == 1) then
|
|
|
|
select case(trans_)
|
|
case('N')
|
|
!
|
|
! Get the overlap entries of tx (tx == x)
|
|
!
|
|
if (sm%restr == psb_halo_) then
|
|
call psb_halo(tx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
else if (sm%restr /= psb_none_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_restr_')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
case('T','C')
|
|
!
|
|
! With transpose, we have to do it here
|
|
!
|
|
|
|
select case (sm%prol)
|
|
|
|
case(psb_none_)
|
|
!
|
|
! Do nothing
|
|
|
|
case(psb_sum_)
|
|
!
|
|
! The transpose of sum is halo
|
|
!
|
|
call psb_halo(tx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
|
|
case(psb_avg_)
|
|
!
|
|
! Tricky one: first we have to scale the overlap entries,
|
|
! which we can do by assignind mode=0, i.e. no communication
|
|
! (hence only scaling), then we do the halo
|
|
!
|
|
call psb_ovrl(tx,sm%desc_data,info,&
|
|
& update=psb_avg_,work=aux,mode=0)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
call psb_halo(tx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_prol_')
|
|
goto 9999
|
|
end select
|
|
|
|
|
|
case default
|
|
info=psb_err_iarg_invalid_i_
|
|
int_err(1)=6
|
|
ch_err(2:2)=trans
|
|
goto 9999
|
|
end select
|
|
|
|
call sm%sv%apply(cone,tx,czero,ty,sm%desc_data,trans_,aux,info)
|
|
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_internal_error_,name,&
|
|
& a_err='Error in sub_aply Jacobi Sweeps = 1')
|
|
goto 9999
|
|
endif
|
|
|
|
select case(trans_)
|
|
case('N')
|
|
|
|
select case (sm%prol)
|
|
|
|
case(psb_none_)
|
|
!
|
|
! Would work anyway, but since it is supposed to do nothing ...
|
|
! call psb_ovrl(ty,sm%desc_data,info,&
|
|
! & update=sm%prol,work=aux)
|
|
|
|
|
|
case(psb_sum_,psb_avg_)
|
|
!
|
|
! Update the overlap of ty
|
|
!
|
|
call psb_ovrl(ty,sm%desc_data,info,&
|
|
& update=sm%prol,work=aux)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_prol_')
|
|
goto 9999
|
|
end select
|
|
|
|
case('T','C')
|
|
!
|
|
! With transpose, we have to do it here
|
|
!
|
|
if (sm%restr == psb_halo_) then
|
|
call psb_ovrl(ty,sm%desc_data,info,&
|
|
& update=psb_sum_,work=aux)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
else if (sm%restr /= psb_none_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_restr_')
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
info=psb_err_iarg_invalid_i_
|
|
int_err(1)=6
|
|
ch_err(2:2)=trans
|
|
goto 9999
|
|
end select
|
|
|
|
|
|
|
|
else if (sweeps > 1) then
|
|
|
|
!
|
|
!
|
|
! Apply prec%iprcparm(mld_smoother_sweeps_) sweeps of a block-Jacobi solver
|
|
! to compute an approximate solution of a linear system.
|
|
!
|
|
!
|
|
ty = czero
|
|
do i=1, sweeps
|
|
select case(trans_)
|
|
case('N')
|
|
!
|
|
! Get the overlap entries of tx (tx == x)
|
|
!
|
|
if (sm%restr == psb_halo_) then
|
|
call psb_halo(tx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
else if (sm%restr /= psb_none_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_restr_')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
case('T','C')
|
|
!
|
|
! With transpose, we have to do it here
|
|
!
|
|
|
|
select case (sm%prol)
|
|
|
|
case(psb_none_)
|
|
!
|
|
! Do nothing
|
|
|
|
case(psb_sum_)
|
|
!
|
|
! The transpose of sum is halo
|
|
!
|
|
call psb_halo(tx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
|
|
case(psb_avg_)
|
|
!
|
|
! Tricky one: first we have to scale the overlap entries,
|
|
! which we can do by assignind mode=0, i.e. no communication
|
|
! (hence only scaling), then we do the halo
|
|
!
|
|
call psb_ovrl(tx,sm%desc_data,info,&
|
|
& update=psb_avg_,work=aux,mode=0)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
call psb_halo(tx,sm%desc_data,info,work=aux,data=psb_comm_ext_)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_halo'
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_prol_')
|
|
goto 9999
|
|
end select
|
|
|
|
|
|
case default
|
|
info=psb_err_iarg_invalid_i_
|
|
int_err(1)=6
|
|
ch_err(2:2)=trans
|
|
goto 9999
|
|
end select
|
|
!
|
|
! Compute Y(j+1) = D^(-1)*(X-ND*Y(j)), where D and ND are the
|
|
! block diagonal part and the remaining part of the local matrix
|
|
! and Y(j) is the approximate solution at sweep j.
|
|
!
|
|
ww(1:n_row) = tx(1:n_row)
|
|
call psb_spmm(-cone,sm%nd,ty,cone,ww,sm%desc_data,info,work=aux,trans=trans_)
|
|
|
|
if (info /= psb_success_) exit
|
|
|
|
call sm%sv%apply(cone,ww,czero,ty,sm%desc_data,trans_,aux,info)
|
|
|
|
if (info /= psb_success_) exit
|
|
|
|
|
|
select case(trans_)
|
|
case('N')
|
|
|
|
select case (sm%prol)
|
|
|
|
case(psb_none_)
|
|
!
|
|
! Would work anyway, but since it is supposed to do nothing ...
|
|
! call psb_ovrl(ty,sm%desc_data,info,&
|
|
! & update=sm%prol,work=aux)
|
|
|
|
|
|
case(psb_sum_,psb_avg_)
|
|
!
|
|
! Update the overlap of ty
|
|
!
|
|
call psb_ovrl(ty,sm%desc_data,info,&
|
|
& update=sm%prol,work=aux)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_prol_')
|
|
goto 9999
|
|
end select
|
|
|
|
case('T','C')
|
|
!
|
|
! With transpose, we have to do it here
|
|
!
|
|
if (sm%restr == psb_halo_) then
|
|
call psb_ovrl(ty,sm%desc_data,info,&
|
|
& update=psb_sum_,work=aux)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_ovrl'
|
|
goto 9999
|
|
end if
|
|
else if (sm%restr /= psb_none_) then
|
|
call psb_errpush(psb_err_internal_error_,name,a_err='Invalid mld_sub_restr_')
|
|
goto 9999
|
|
end if
|
|
|
|
case default
|
|
info=psb_err_iarg_invalid_i_
|
|
int_err(1)=6
|
|
ch_err(2:2)=trans
|
|
goto 9999
|
|
end select
|
|
end do
|
|
|
|
if (info /= psb_success_) then
|
|
info=psb_err_internal_error_
|
|
call psb_errpush(info,name,a_err='subsolve with Jacobi sweeps > 1')
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
else
|
|
|
|
info = psb_err_iarg_neg_
|
|
call psb_errpush(info,name,&
|
|
& i_err=(/2,sweeps,0,0,0/))
|
|
goto 9999
|
|
|
|
|
|
end if
|
|
|
|
!
|
|
! Compute y = beta*y + alpha*ty (ty == K^(-1)*tx)
|
|
!
|
|
call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
|
|
|
|
end if
|
|
|
|
|
|
if ((6*isz) <= size(work)) then
|
|
else if ((4*isz) <= size(work)) then
|
|
deallocate(ww,tx,ty)
|
|
else if ((3*isz) <= size(work)) then
|
|
deallocate(aux)
|
|
else
|
|
deallocate(ww,aux,tx,ty)
|
|
endif
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine mld_c_as_smoother_apply
|
|
|
|
subroutine mld_c_as_smoother_bld(a,desc_a,sm,upd,info,amold,vmold)
|
|
use psb_base_mod
|
|
use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_bld
|
|
Implicit None
|
|
|
|
! Arguments
|
|
type(psb_cspmat_type), intent(in), target :: a
|
|
Type(psb_desc_type), Intent(in) :: desc_a
|
|
class(mld_c_as_smoother_type), intent(inout) :: sm
|
|
character, intent(in) :: upd
|
|
integer, intent(out) :: info
|
|
class(psb_c_base_sparse_mat), intent(in), optional :: amold
|
|
class(psb_c_base_vect_type), intent(in), optional :: vmold
|
|
|
|
! Local variables
|
|
type(psb_cspmat_type) :: blck, atmp
|
|
integer :: n_row,n_col, nrow_a, nhalo, novr, data_, nzeros
|
|
complex(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
|
integer :: ictxt,np,me,i, err_act, debug_unit, debug_level
|
|
character(len=20) :: name='c_as_smoother_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'
|
|
|
|
|
|
novr = sm%novr
|
|
if (novr < 0) then
|
|
info=psb_err_invalid_ovr_num_
|
|
call psb_errpush(info,name,i_err=(/novr,0,0,0,0,0/))
|
|
goto 9999
|
|
endif
|
|
|
|
if ((novr == 0).or.(np == 1)) then
|
|
if (psb_toupper(upd) == 'F') then
|
|
call psb_cdcpy(desc_a,sm%desc_data,info)
|
|
If(debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& ' done cdcpy'
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_cdcpy'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Early return: P>=3 N_OVR=0'
|
|
endif
|
|
call blck%csall(0,0,info,1)
|
|
else
|
|
|
|
If (psb_toupper(upd) == 'F') Then
|
|
!
|
|
! Build the auxiliary descriptor desc_p%matrix_data(psb_n_row_).
|
|
! This is done by psb_cdbldext (interface to psb_cdovr), which is
|
|
! independent of CSR, and has been placed in the tools directory
|
|
! of PSBLAS, instead of the mlprec directory of MLD2P4, because it
|
|
! might be used independently of the AS preconditioner, to build
|
|
! a descriptor for an extended stencil in a PDE solver.
|
|
!
|
|
call psb_cdbldext(a,desc_a,novr,sm%desc_data,info,extype=psb_ovt_asov_)
|
|
if(debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& ' From cdbldext _:',sm%desc_data%get_local_rows(),&
|
|
& sm%desc_data%get_local_cols()
|
|
|
|
if (info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_cdbldext'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
Endif
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'Before sphalo '
|
|
|
|
!
|
|
! Retrieve the remote sparse matrix rows required for the AS extended
|
|
! matrix
|
|
data_ = psb_comm_ext_
|
|
Call psb_sphalo(a,sm%desc_data,blck,info,data=data_,rowscale=.true.)
|
|
|
|
if (info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_sphalo'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if (debug_level >=psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),&
|
|
& 'After psb_sphalo ',&
|
|
& blck%get_nrows(), blck%get_nzeros()
|
|
|
|
End if
|
|
if (info == psb_success_) &
|
|
& call sm%sv%build(a,sm%desc_data,upd,info,&
|
|
& blck,amold=amold,vmold=vmold)
|
|
|
|
nrow_a = a%get_nrows()
|
|
n_row = sm%desc_data%get_local_rows()
|
|
n_col = sm%desc_data%get_local_cols()
|
|
|
|
if (info == psb_success_) call a%csclip(sm%nd,info,&
|
|
& jmin=nrow_a+1,rscale=.false.,cscale=.false.)
|
|
if (info == psb_success_) call blck%csclip(atmp,info,&
|
|
& jmin=nrow_a+1,rscale=.false.,cscale=.false.)
|
|
if (info == psb_success_) call psb_rwextd(n_row,sm%nd,info,b=atmp)
|
|
|
|
if (info == psb_success_) then
|
|
if (present(amold)) then
|
|
call sm%nd%cscnv(info,&
|
|
& mold=amold,dupl=psb_dupl_add_)
|
|
else
|
|
call sm%nd%cscnv(info,&
|
|
& type='csr',dupl=psb_dupl_add_)
|
|
end if
|
|
end if
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='clip & psb_spcnv csr 4')
|
|
goto 9999
|
|
end if
|
|
nzeros = sm%nd%get_nzeros()
|
|
!!$ write(0,*) me,' ND nzeors ',nzeros
|
|
call psb_sum(ictxt,nzeros)
|
|
sm%nd_nnz_tot = nzeros
|
|
|
|
if (debug_level >= psb_debug_outer_) &
|
|
& write(debug_unit,*) me,' ',trim(name),' end'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
end subroutine mld_c_as_smoother_bld
|
|
|
|
|
|
subroutine mld_c_as_smoother_seti(sm,what,val,info)
|
|
use psb_base_mod
|
|
use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_seti
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_c_as_smoother_type), intent(inout) :: sm
|
|
integer, intent(in) :: what
|
|
integer, intent(in) :: val
|
|
integer, intent(out) :: info
|
|
Integer :: err_act
|
|
character(len=20) :: name='c_as_smoother_seti'
|
|
|
|
info = psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
select case(what)
|
|
!!$ case(mld_smoother_sweeps_)
|
|
!!$ sm%sweeps = val
|
|
case(mld_sub_ovr_)
|
|
sm%novr = val
|
|
case(mld_sub_restr_)
|
|
sm%restr = val
|
|
case(mld_sub_prol_)
|
|
sm%prol = val
|
|
case default
|
|
if (allocated(sm%sv)) then
|
|
call sm%sv%set(what,val,info)
|
|
end if
|
|
end select
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
end subroutine mld_c_as_smoother_seti
|
|
|
|
subroutine mld_c_as_smoother_setc(sm,what,val,info)
|
|
use psb_base_mod
|
|
use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_setc
|
|
Implicit None
|
|
! Arguments
|
|
class(mld_c_as_smoother_type), intent(inout) :: sm
|
|
integer, intent(in) :: what
|
|
character(len=*), intent(in) :: val
|
|
integer, intent(out) :: info
|
|
Integer :: err_act, ival
|
|
character(len=20) :: name='c_as_smoother_setc'
|
|
|
|
info = psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
|
|
call mld_stringval(val,ival,info)
|
|
if (info == psb_success_) call sm%set(what,ival,info)
|
|
if (info /= psb_success_) then
|
|
info = psb_err_from_subroutine_
|
|
call psb_errpush(info, name)
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
end subroutine mld_c_as_smoother_setc
|
|
|
|
subroutine mld_c_as_smoother_setr(sm,what,val,info)
|
|
use psb_base_mod
|
|
use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_setr
|
|
Implicit None
|
|
! Arguments
|
|
class(mld_c_as_smoother_type), intent(inout) :: sm
|
|
integer, intent(in) :: what
|
|
real(psb_spk_), intent(in) :: val
|
|
integer, intent(out) :: info
|
|
Integer :: err_act
|
|
character(len=20) :: name='c_as_smoother_setr'
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
|
|
|
|
if (allocated(sm%sv)) then
|
|
call sm%sv%set(what,val,info)
|
|
else
|
|
!!$ write(0,*) trim(name),' Missing component, not setting!'
|
|
!!$ info = 1121
|
|
end if
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
end subroutine mld_c_as_smoother_setr
|
|
|
|
subroutine mld_c_as_smoother_free(sm,info)
|
|
use psb_base_mod
|
|
use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_free
|
|
Implicit None
|
|
! Arguments
|
|
class(mld_c_as_smoother_type), intent(inout) :: sm
|
|
integer, intent(out) :: info
|
|
Integer :: err_act
|
|
character(len=20) :: name='c_as_smoother_free'
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
|
|
|
|
|
|
if (allocated(sm%sv)) then
|
|
call sm%sv%free(info)
|
|
if (info == psb_success_) deallocate(sm%sv,stat=info)
|
|
if (info /= psb_success_) then
|
|
info = psb_err_alloc_dealloc_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
end if
|
|
call sm%nd%free()
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
end subroutine mld_c_as_smoother_free
|
|
|
|
subroutine mld_c_as_smoother_dmp(sm,ictxt,level,info,prefix,head,smoother,solver)
|
|
use psb_base_mod
|
|
use mld_c_as_smoother, mld_protect_nam => mld_c_as_smoother_dmp
|
|
implicit none
|
|
class(mld_c_as_smoother_type), intent(in) :: sm
|
|
integer, intent(in) :: ictxt,level
|
|
integer, intent(out) :: info
|
|
character(len=*), intent(in), optional :: prefix, head
|
|
logical, optional, intent(in) :: smoother, solver
|
|
integer :: i, j, il1, iln, lname, lev
|
|
integer :: icontxt,iam, np
|
|
character(len=80) :: prefix_
|
|
character(len=120) :: fname ! len should be at least 20 more than
|
|
logical :: smoother_
|
|
! len of prefix_
|
|
|
|
info = 0
|
|
|
|
if (present(prefix)) then
|
|
prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
|
|
else
|
|
prefix_ = "dump_smth_c"
|
|
end if
|
|
|
|
call psb_info(ictxt,iam,np)
|
|
|
|
if (present(smoother)) then
|
|
smoother_ = smoother
|
|
else
|
|
smoother_ = .false.
|
|
end if
|
|
lname = len_trim(prefix_)
|
|
fname = trim(prefix_)
|
|
write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
|
|
lname = lname + 5
|
|
|
|
if (smoother_) then
|
|
write(fname(lname+1:),'(a,i3.3,a)')'_l',level,'_nd.mtx'
|
|
if (sm%nd%is_asb()) &
|
|
& call sm%nd%print(fname,head=head)
|
|
end if
|
|
! At base level do nothing for the smoother
|
|
if (allocated(sm%sv)) &
|
|
& call sm%sv%dump(ictxt,level,info,solver=solver,prefix=prefix)
|
|
|
|
end subroutine mld_c_as_smoother_dmp
|
|
|