fdurastante
/
amg4psblas
mirror of https://github.com/sfilippone/amg4psblas.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
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.
repackage
repack-newsolve
l1-and-0-aggr
development
l1aggregation
PolySmooth
Poly-novrl
maint-1.1
jac_solver
master
dev-openmp
TestFerdous
omp-walther
openmp-match
maint-1.1.0
fixmatch
tspmm
maint-1.0
maint-1.0.1
fix-sludist7
remap-coarse
savebcmatch
configry
mergeparmatch
documentation
new-context
implement-ainv
merge-amgext
unify_aggr_bld
unify_aggr_bld_richardson
pizdaint-runs
richardson
stopcriterion
V1.0.0
v1.0-rc2
v1.0.1
v1.1.0
v1.1.1
v1.1.2
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '5e174d062e'
${ noResults }
amg4psblas/mlprec/impl/mld_cprecaply.f90

576 lines
18 KiB
Fortran
Raw Blame History

!
!
! 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.
!
!
! File: mld_cprecaply.f90
!
! Subroutine: mld_cprecaply
! Version: complex
!
! This routine applies the preconditioner built by mld_cprecbld, i.e. it computes
!
! Y = op(M^(-1)) * X,
! where
! - M is the preconditioner,
! - op(M^(-1)) is M^(-1) or its transpose, according to the value of trans,
! - X and Y are vectors.
! This operation is performed at each iteration of a preconditioned Krylov solver.
!
!
! Arguments:
! prec - type(mld_cprec_type), input.
! The preconditioner data structure containing the local part
! of the preconditioner to be applied.
! x - complex(psb_spk_), dimension(:), input.
! The local part of the vector X in Y=op(M^(-1))*X.
! y - complex(psb_spk_), dimension(:), output.
! The local part of the vector Y in Y=op(M^(-1))*X.
! desc_data - type(psb_desc_type), input.
! The communication descriptor associated to the matrix to be
! preconditioned.
! info - integer, output.
! Error code.
! trans - character(len=1), optional.
! If trans='N','n' then op(M^(-1)) = M^(-1);
! if trans='T','t' then op(M^(-1)) = M^(-T) (transpose of M^(-1)).
! work - complex(psb_spk_), dimension (:), optional, target.
! Workspace. Its size must be at
! least 4*desc_data%get_local_cols().
!
subroutine mld_cprecaply(prec,x,y,desc_data,info,trans,work)
use psb_base_mod
use mld_c_inner_mod!, mld_protect_name => mld_cprecaply
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_cprec_type), intent(inout) :: prec
complex(psb_spk_),intent(inout) :: x(:)
complex(psb_spk_),intent(inout) :: y(:)
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
complex(psb_spk_),intent(inout), optional, target :: work(:)
! Local variables
character :: trans_
complex(psb_spk_), pointer :: work_(:)
complex(psb_spk_), allocatable :: w1(:), w2(:)
integer(psb_ipk_) :: ictxt,np,me
integer(psb_ipk_) :: err_act,iwsz, k, nswps
character(len=20) :: name
name='mld_cprecaply'
info = psb_success_
call psb_erractionsave(err_act)
ictxt = desc_data%get_context()
call psb_info(ictxt, me, np)
if (present(trans)) then
trans_=psb_toupper(trans)
else
trans_='N'
end if
if (present(work)) then
work_ => work
else
iwsz = max(1,4*desc_data%get_local_cols())
allocate(work_(iwsz),stat=info)
if (info /= psb_success_) then
call psb_errpush(psb_err_alloc_request_,name, &
& i_err=(/iwsz,izero,izero,izero,izero/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
end if
if (.not.(allocated(prec%precv))) then
!! Error 1: should call mld_cprecbld
info=3112
call psb_errpush(info,name)
goto 9999
end if
if (size(prec%precv) >1) then
!
! Number of levels > 1: apply the multilevel preconditioner
!
call mld_mlprec_aply(cone,prec,x,czero,y,desc_data,trans_,work_,info)
if(info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='mld_cmlprec_aply')
goto 9999
end if
else if (size(prec%precv) == 1) then
!
! Number of levels = 1: apply the base preconditioner
!
if (allocated(prec%precv(1)%sm2a)) then
nswps = max(prec%precv(1)%parms%sweeps_pre,prec%precv(1)%parms%sweeps_post)
!
! This is a kludge for handling the symmetrized GS case.
! Will need some rethinking.
!
call psb_geasb(w1,desc_data,info,scratch=.true.)
call psb_geasb(w2,desc_data,info,scratch=.true.)
call psb_geaxpby(cone,x,czero,w1,desc_data,info)
select case(trans_)
case ('N')
do k=1, nswps
call prec%precv(1)%sm%apply(cone,w1,czero,w2,desc_data,trans_,&
& ione, work_,info)
call prec%precv(1)%sm2a%apply(cone,w2,czero,w1,desc_data,trans_,&
& ione, work_,info)
end do
case('T','C')
do k=1, nswps
call prec%precv(1)%sm2a%apply(cone,w1,czero,w2,desc_data,trans_,&
& ione, work_,info)
call prec%precv(1)%sm%apply(cone,w2,czero,w1,desc_data,trans_,&
& ione, work_,info)
end do
case default
info = psb_err_from_subroutine_
call psb_errpush(info,name,a_err='Invalid trans')
goto 9999
end select
call psb_geaxpby(cone,w1,czero,y,desc_data,info)
call psb_gefree(w1,desc_data,info)
call psb_gefree(w2,desc_data,info)
else
nswps = prec%precv(1)%parms%sweeps_pre
call prec%precv(1)%sm%apply(cone,x,czero,y,desc_data,trans_,&
& nswps, work_,info)
end if
else
info = psb_err_from_subroutine_ai_
call psb_errpush(info,name,a_err='Invalid size of precv',&
& i_Err=(/ione*size(prec%precv),izero,izero,izero,izero/))
goto 9999
endif
! If the original distribution has an overlap we should fix that.
call psb_halo(y,desc_data,info,data=psb_comm_mov_)
if (present(work)) then
else
deallocate(work_)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine mld_cprecaply
!
! Subroutine: mld_cprecaply1
! Version: complex
!
! Applies the preconditioner built by mld_cprecbld, i.e. computes
!
! X = op(M^(-1)) * X,
! where
! - M is the preconditioner,
! - op(M^(-1)) is M^(-1) or its transpose, according to the value of trans,
! - X is a vectors.
! This operation is performed at each iteration of a preconditioned Krylov solver.
!
! This routine differs from mld_cprecaply because the preconditioned vector X
! overwrites the original one.
!
!
! Arguments:
! prec - type(mld_cprec_type), input.
! The preconditioner data structure containing the local part
! of the preconditioner to be applied.
! x - complex(psb_spk_), dimension(:), input/output.
! The local part of vector X in X := op(M^(-1)) * X.
! desc_data - type(psb_desc_type), input.
! The communication descriptor associated to the matrix to be
! preconditioned.
! info - integer, output.
! Error code.
! trans - character(len=1), optional.
! If trans='N','n' then op(M^(-1)) = M^(-1);
! if trans='T','t' then op(M^(-1)) = M^(-T) (transpose of M^(-1)).
!
subroutine mld_cprecaply1(prec,x,desc_data,info,trans)
use psb_base_mod
use mld_c_inner_mod!, mld_protect_name => mld_cprecaply1
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_cprec_type), intent(inout) :: prec
complex(psb_spk_),intent(inout) :: x(:)
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
! Local variables
integer(psb_ipk_) :: ictxt,np,me
integer(psb_ipk_) :: err_act
complex(psb_spk_), pointer :: ww(:), w1(:)
character(len=20) :: name
name='mld_cprecaply1'
info = psb_success_
call psb_erractionsave(err_act)
ictxt = desc_data%get_context()
call psb_info(ictxt, me, np)
allocate(ww(size(x)),w1(size(x)),stat=info)
if (info /= psb_success_) then
info=psb_err_alloc_request_
call psb_errpush(info,name, &
& i_err=(/itwo*size(x),izero,izero,izero,izero/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
call prec%apply(x,ww,desc_data,info,trans=trans,work=w1)
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='mld_precaply')
goto 9999
end if
x(:) = ww(:)
deallocate(ww,w1,stat=info)
if (info /= psb_success_) then
info = psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine mld_cprecaply1
subroutine mld_cprecaply2_vect(prec,x,y,desc_data,info,trans,work)
use psb_base_mod
use mld_c_inner_mod!, mld_protect_name => mld_cprecaply2_vect
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_cprec_type), intent(inout) :: prec
type(psb_c_vect_type),intent(inout) :: x
type(psb_c_vect_type),intent(inout) :: y
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
complex(psb_spk_),intent(inout), optional, target :: work(:)
! Local variables
character :: trans_
complex(psb_spk_), pointer :: work_(:)
integer(psb_ipk_) :: ictxt,np,me
integer(psb_ipk_) :: err_act,iwsz, k, nswps
character(len=20) :: name
name='mld_cprecaply'
info = psb_success_
call psb_erractionsave(err_act)
ictxt = desc_data%get_context()
call psb_info(ictxt, me, np)
if (present(trans)) then
trans_=psb_toupper(trans)
else
trans_='N'
end if
if (present(work)) then
work_ => work
else
iwsz = max(1,4*desc_data%get_local_cols())
allocate(work_(iwsz),stat=info)
if (info /= psb_success_) then
call psb_errpush(psb_err_alloc_request_,name, &
& i_err=(/iwsz,izero,izero,izero,izero/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
end if
if (.not.(allocated(prec%precv))) then
!! Error 1: should call mld_cprecbld
info=3112
call psb_errpush(info,name)
goto 9999
end if
if (size(prec%precv) >1) then
!
! Number of levels > 1: apply the multilevel preconditioner
!
call mld_mlprec_aply(cone,prec,x,czero,y,desc_data,trans_,work_,info)
if(info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='mld_cmlprec_aply')
goto 9999
end if
else if (size(prec%precv) == 1) then
!
! Number of levels = 1: apply the base preconditioner
!
nswps = max(prec%precv(1)%parms%sweeps_pre,prec%precv(1)%parms%sweeps_post)
if (allocated(prec%precv(1)%sm2a)) then
!
! This is a kludge for handling the symmetrized GS case.
! Will need some rethinking.
!
twoside: block
type(psb_c_vect_type) :: w1,w2
call psb_geasb(w1,desc_data,info,mold=x%v,scratch=.true.)
call psb_geasb(w2,desc_data,info,mold=x%v,scratch=.true.)
call psb_geaxpby(cone,x,czero,w1,desc_data,info)
select case(trans_)
case ('N')
do k=1, nswps
call prec%precv(1)%sm%apply(cone,w1,czero,w2,desc_data,trans_,&
& ione, work_,info)
call prec%precv(1)%sm2a%apply(cone,w2,czero,w1,desc_data,trans_,&
& ione, work_,info)
end do
case('T','C')
do k=1, nswps
call prec%precv(1)%sm2a%apply(cone,w1,czero,w2,desc_data,trans_,&
& ione, work_,info)
call prec%precv(1)%sm%apply(cone,w2,czero,w1,desc_data,trans_,&
& ione, work_,info)
end do
case default
info = psb_err_from_subroutine_
call psb_errpush(info,name,a_err='Invalid trans')
goto 9999
end select
call psb_geaxpby(cone,w1,czero,y,desc_data,info)
call psb_gefree(w1,desc_data,info)
call psb_gefree(w2,desc_data,info)
end block twoside
else
call prec%precv(1)%sm%apply(cone,x,czero,y,desc_data,trans_,&
& nswps,work_,info)
end if
else
info = psb_err_from_subroutine_ai_
call psb_errpush(info,name,a_err='Invalid size of precv',&
& i_Err=(/ione*size(prec%precv),izero,izero,izero,izero/))
goto 9999
endif
! If the original distribution has an overlap we should fix that.
call psb_halo(y,desc_data,info,data=psb_comm_mov_)
if (present(work)) then
else
deallocate(work_)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine mld_cprecaply2_vect
subroutine mld_cprecaply1_vect(prec,x,desc_data,info,trans,work)
use psb_base_mod
use mld_c_inner_mod!, mld_protect_name => mld_cprecaply1_vect
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_cprec_type), intent(inout) :: prec
type(psb_c_vect_type),intent(inout) :: x
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
complex(psb_spk_),intent(inout), optional, target :: work(:)
! Local variables
character :: trans_
type(psb_c_vect_type) :: ww
complex(psb_spk_), pointer :: work_(:)
integer(psb_ipk_) :: ictxt,np,me
integer(psb_ipk_) :: err_act,iwsz, k, nswps
character(len=20) :: name
name='mld_cprecaply'
info = psb_success_
call psb_erractionsave(err_act)
ictxt = desc_data%get_context()
call psb_info(ictxt, me, np)
if (present(trans)) then
trans_=psb_toupper(trans)
else
trans_='N'
end if
if (present(work)) then
work_ => work
else
iwsz = max(1,4*desc_data%get_local_cols())
allocate(work_(iwsz),stat=info)
if (info /= psb_success_) then
call psb_errpush(psb_err_alloc_request_,name, &
& i_err=(/iwsz,izero,izero,izero,izero/),&
& a_err='complex(psb_spk_)')
goto 9999
end if
end if
if (.not.(allocated(prec%precv))) then
!! Error 1: should call mld_cprecbld
info=3112
call psb_errpush(info,name)
goto 9999
end if
call psb_geasb(ww,desc_data,info,mold=x%v,scratch=.true.)
if (size(prec%precv) >1) then
!
! Number of levels > 1: apply the multilevel preconditioner
!
call mld_mlprec_aply(cone,prec,x,czero,ww,desc_data,trans_,work_,info)
if (info == 0) call psb_geaxpby(cone,ww,czero,x,desc_data,info)
if(info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='mld_cmlprec_aply')
goto 9999
end if
else if (size(prec%precv) == 1) then
!
! Number of levels = 1: apply the base preconditioner
!
nswps = max(prec%precv(1)%parms%sweeps_pre,prec%precv(1)%parms%sweeps_post)
if (allocated(prec%precv(1)%sm2a)) then
!
! This is a kludge for handling the symmetrized GS case.
! Will need some rethinking.
!
select case(trans_)
case ('N')
do k=1, nswps
call prec%precv(1)%sm%apply(cone,x,czero,ww,desc_data,trans_,&
& ione, work_,info)
call prec%precv(1)%sm2a%apply(cone,ww,czero,x,desc_data,trans_,&
& ione, work_,info)
end do
case('T','C')
do k=1, nswps
call prec%precv(1)%sm2a%apply(cone,x,czero,ww,desc_data,trans_,&
& ione, work_,info)
call prec%precv(1)%sm%apply(cone,ww,czero,x,desc_data,trans_,&
& ione, work_,info)
end do
case default
info = psb_err_from_subroutine_
call psb_errpush(info,name,a_err='Invalid trans')
goto 9999
end select
else
call prec%precv(1)%sm%apply(cone,x,czero,ww,desc_data,trans_,&
& nswps, work_,info)
if (info == 0) call psb_geaxpby(cone,ww,czero,x,desc_data,info)
end if
else
info = psb_err_from_subroutine_ai_
call psb_errpush(info,name,a_err='Invalid size of precv',&
& i_Err=(/ione*size(prec%precv),izero,izero,izero,izero/))
goto 9999
endif
if (info == 0) call psb_gefree(ww,desc_data,info)
! If the original distribution has an overlap we should fix that.
call psb_halo(x,desc_data,info,data=psb_comm_mov_)
if (present(work)) then
else
deallocate(work_)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine mld_cprecaply1_vect
Reference in New Issue View Git Blame Copy Permalink