mld2p4-2:
mlprec/impl/solver/Makefile mlprec/impl/solver/mld_d_gs_solver_apply_vect.f90 mlprec/mld_d_gs_solver.f90 GS apply, not working completely yetstopcriterion
Salvatore Filippone
9 years ago
parent
34926cdb94
commit
7c884ffd90
@ -0,0 +1,196 @@
|
||||
!!$
|
||||
!!$
|
||||
!!$ MLD2P4 version 2.0
|
||||
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
|
||||
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.3)
|
||||
!!$
|
||||
!!$ (C) Copyright 2008, 2010, 2012, 2015
|
||||
!!$
|
||||
!!$ 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.
|
||||
!!$
|
||||
!!$
|
||||
subroutine mld_d_gs_solver_apply_vect(alpha,sv,x,beta,y,desc_data,trans,work,info)
|
||||
|
||||
use psb_base_mod
|
||||
use mld_d_gs_solver, mld_protect_name => mld_d_gs_solver_apply_vect
|
||||
implicit none
|
||||
type(psb_desc_type), intent(in) :: desc_data
|
||||
class(mld_d_gs_solver_type), intent(inout) :: sv
|
||||
type(psb_d_vect_type),intent(inout) :: x
|
||||
type(psb_d_vect_type),intent(inout) :: y
|
||||
real(psb_dpk_),intent(in) :: alpha,beta
|
||||
character(len=1),intent(in) :: trans
|
||||
real(psb_dpk_),target, intent(inout) :: work(:)
|
||||
integer(psb_ipk_), intent(out) :: info
|
||||
|
||||
integer(psb_ipk_) :: n_row,n_col, itx
|
||||
type(psb_d_vect_type) :: wv, xit
|
||||
real(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:)
|
||||
integer(psb_ipk_) :: ictxt,np,me,i, err_act
|
||||
character :: trans_
|
||||
character(len=20) :: name='d_gs_solver_apply'
|
||||
|
||||
call psb_erractionsave(err_act)
|
||||
|
||||
info = psb_success_
|
||||
|
||||
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
|
||||
|
||||
n_row = desc_data%get_local_rows()
|
||||
n_col = desc_data%get_local_cols()
|
||||
|
||||
|
||||
if (x%get_nrows() < n_row) then
|
||||
info = 36
|
||||
call psb_errpush(info,name,&
|
||||
& i_err=(/itwo,n_row,izero,izero,izero/))
|
||||
goto 9999
|
||||
end if
|
||||
if (y%get_nrows() < n_row) then
|
||||
info = 36
|
||||
call psb_errpush(info,name,&
|
||||
& i_err=(/ithree,n_row,izero,izero,izero/))
|
||||
goto 9999
|
||||
end if
|
||||
|
||||
|
||||
|
||||
if (n_col <= size(work)) then
|
||||
ww => work(1:n_col)
|
||||
if ((4*n_col+n_col) <= size(work)) then
|
||||
aux => work(n_col+1:)
|
||||
else
|
||||
allocate(aux(4*n_col),stat=info)
|
||||
endif
|
||||
else
|
||||
allocate(ww(n_col),aux(4*n_col),stat=info)
|
||||
endif
|
||||
|
||||
if (info /= psb_success_) then
|
||||
info=psb_err_alloc_request_
|
||||
call psb_errpush(info,name,&
|
||||
& i_err=(/5*n_col,izero,izero,izero,izero/),&
|
||||
& a_err='real(psb_dpk_)')
|
||||
goto 9999
|
||||
end if
|
||||
|
||||
call psb_geasb(wv,desc_data,info,mold=x%v,scratch=.true.)
|
||||
call psb_geasb(xit,desc_data,info,mold=x%v,scratch=.true.)
|
||||
|
||||
select case(trans_)
|
||||
case('N')
|
||||
if (sv%eps <=dzero) then
|
||||
!
|
||||
! Fixed number of iterations
|
||||
!
|
||||
!
|
||||
! WARNING: this is not completely satisfactory. We are assuming here Y
|
||||
! as the initial guess, but this is only working if we are called from the
|
||||
! current JAC smoother loop. A good solution would be to have a separate
|
||||
! input argument as the initial guess
|
||||
!
|
||||
|
||||
call psb_geaxpby(done,y,dzero,xit,desc_data,info)
|
||||
do itx=1,sv%sweeps
|
||||
call psb_geaxpby(done,x,dzero,wv,desc_data,info)
|
||||
! Update with U. The off-diagonal block is taken care
|
||||
! from the Jacobi smoother, hence this is purely local.
|
||||
call psb_spmm(-done,sv%u,xit,done,wv,desc_data,info,doswap=.false.)
|
||||
call psb_spsm(done,sv%l,wv,dzero,xit,desc_data,info)
|
||||
end do
|
||||
|
||||
call psb_geaxpby(alpha,xit,beta,y,desc_data,info)
|
||||
|
||||
else
|
||||
!
|
||||
! Iterations to convergence, not implemented right now.
|
||||
!
|
||||
info = psb_err_internal_error_
|
||||
call psb_errpush(info,name,a_err='EPS>0 not implemented in GS subsolve')
|
||||
goto 9999
|
||||
|
||||
end if
|
||||
!!$ case('T')
|
||||
!!$ call psb_spsm(done,sv%u,x,dzero,wv,desc_data,info,&
|
||||
!!$ & trans=trans_,scale='L',diag=sv%dv,choice=psb_none_,work=aux)
|
||||
!!$ if (info == psb_success_) call psb_spsm(alpha,sv%l,wv,beta,y,desc_data,info,&
|
||||
!!$ & trans=trans_,scale='U',choice=psb_none_,work=aux)
|
||||
!!$
|
||||
!!$ case('C')
|
||||
!!$
|
||||
!!$ call psb_spsm(done,sv%u,x,dzero,wv,desc_data,info,&
|
||||
!!$ & trans=trans_,scale='U',choice=psb_none_,work=aux)
|
||||
!!$
|
||||
!!$ call wv1%mlt(done,sv%dv,wv,dzero,info,conjgx=trans_)
|
||||
!!$
|
||||
!!$ if (info == psb_success_) call psb_spsm(alpha,sv%l,wv1,beta,y,desc_data,info,&
|
||||
!!$ & trans=trans_,scale='U',choice=psb_none_,work=aux)
|
||||
|
||||
case default
|
||||
info = psb_err_internal_error_
|
||||
call psb_errpush(info,name,&
|
||||
& a_err='Invalid TRANS in GS subsolve')
|
||||
goto 9999
|
||||
end select
|
||||
|
||||
|
||||
if (info /= psb_success_) then
|
||||
|
||||
call psb_errpush(psb_err_internal_error_,name,&
|
||||
& a_err='Error in subsolve')
|
||||
goto 9999
|
||||
endif
|
||||
call wv%free(info)
|
||||
call xit%free(info)
|
||||
if (n_col <= size(work)) then
|
||||
if ((4*n_col+n_col) <= size(work)) then
|
||||
else
|
||||
deallocate(aux)
|
||||
endif
|
||||
else
|
||||
deallocate(ww,aux)
|
||||
endif
|
||||
|
||||
call psb_erractionrestore(err_act)
|
||||
return
|
||||
|
||||
9999 call psb_error_handler(err_act)
|
||||
|
||||
return
|
||||
|
||||
end subroutine mld_d_gs_solver_apply_vect
|
||||
Loading…
Reference in New Issue