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Reworked internals of mlprec_aply.

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stopcriterion
Salvatore Filippone 17 years ago
parent 6b38c92580
commit 2faafc3a5e
2 changed files with 1803 additions and 1288 deletions
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700
mlprec/mld_dmlprec_aply.f90
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@ -185,10 +185,6 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
real(kind(1.d0)), allocatable :: tx(:), ty(:), x2l(:), y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name='mld_dmlprec_aply'
info = 0
@ -203,14 +199,6 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
select case(baseprecv(2)%iprcparm(mld_ml_type_))
case(mld_no_ml_)
@ -223,6 +211,103 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_add_ml_)
call add_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_mult_ml_)
!
! Multiplicative multilevel (multiplicative among the levels, additive inside
! each level)
!
! Pre/post-smoothing versions
!
select case(baseprecv(2)%iprcparm(mld_smooth_pos_))
case(mld_post_smooth_)
call mlt_post_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_pre_smooth_)
call mlt_pre_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_twoside_smooth_)
call mlt_twoside_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case default
info = 4013
call psb_errpush(info,name,a_err='invalid smooth_pos',&
& i_Err=(/baseprecv(2)%iprcparm(mld_smooth_pos_),0,0,0,0/))
goto 9999
end select
case default
info = 4013
call psb_errpush(info,name,a_err='invalid mltype',&
& i_Err=(/baseprecv(2)%iprcparm(mld_ml_type_),0,0,0,0/))
goto 9999
end select
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
contains
subroutine add_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_dbaseprc_type), intent(in) :: baseprecv(:)
real(kind(0.d0)),intent(in) :: alpha,beta
real(kind(0.d0)),intent(in) :: x(:)
real(kind(0.d0)),intent(inout) :: y(:)
character :: trans
real(kind(0.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
real(kind(1.d0)), allocatable :: tx(:), ty(:), x2l(:), y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name='add_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
!
! Additive multilevel
!
@ -398,48 +483,105 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
call psb_errpush(4001,name,a_err='Error on final update')
goto 9999
end if
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
case(mld_mult_ml_)
call psb_erractionrestore(err_act)
return
!
! Multiplicative multilevel (multiplicative among the levels, additive inside
! each level)
!
! Pre/post-smoothing versions
!
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
select case(baseprecv(2)%iprcparm(mld_smooth_pos_))
end subroutine add_ml_aply
case(mld_post_smooth_)
subroutine mlt_pre_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_dbaseprc_type), intent(in) :: baseprecv(:)
real(kind(0.d0)),intent(in) :: alpha,beta
real(kind(0.d0)),intent(in) :: x(:)
real(kind(0.d0)),intent(inout) :: y(:)
character :: trans
real(kind(0.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
real(kind(1.d0)), allocatable :: tx(:), ty(:), x2l(:), y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name='mlt_pre_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
!
! Post-smoothing
! Pre-smoothing
!
! 1. X(1) = Xext
!
! 2. DO ilev=2, nlev
! 2. ! Apply the base preconditioner at the finest level.
! Y(1) = (K(1)^(-1))*X(1)
!
! ! Transfer X(ilev-1) to the next coarser level.
! X(ilev) = AV(ilev; sm_pr_t_)*X(ilev-1)
! 3. ! Compute the residual at the finest level.
! TX(1) = X(1) - A(1)*Y(1)
!
! ENDDO
! 4. DO ilev=2, nlev
!
! 3.! Apply the preconditioner at the coarsest level.
! Y(nlev) = (K(nlev)^(-1))*X(nlev)
! ! Transfer the residual to the current (coarser) level.
! X(ilev) = AV(ilev; sm_pr_t_)*TX(ilev-1)
!
! 4. DO ilev=nlev-1,1,-1
! ! Apply the base preconditioner at the current level.
! ! The sum over the subdomains is carried out in the
! ! application of K(ilev).
! Y(ilev) = (K(ilev)^(-1))*X(ilev)
!
! ! Transfer Y(ilev+1) to the next finer level.
! Y(ilev) = AV(ilev+1; sm_pr_)*Y(ilev+1)
! ! Compute the residual at the current level (except at
! ! the coarsest level).
! IF (ilev < nlev)
! TX(ilev) = (X(ilev)-A(ilev)*Y(ilev))
!
! ! Compute the residual at the current level and apply to it the
! ! base preconditioner. The sum over the subdomains is carried out
! ! in the application of K(ilev).
! Y(ilev) = Y(ilev) + (K(ilev)^(-1))*(X(ilev)-A(ilev)*Y(ilev))
! ENDDO
!
! 5. DO ilev=nlev-1,1,-1
!
! ! Transfer Y(ilev+1) to the next finer level
! Y(ilev) = Y(ilev) + AV(ilev+1; sm_pr_)*Y(ilev+1)
!
! ENDDO
!
! 5. Yext = beta*Yext + alpha*Y(1)
! 6. Yext = beta*Yext + alpha*Y(1)
!
!
@ -447,30 +589,55 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
!
! Copy the input vector X
!
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' desc_data status',allocated(desc_data%matrix_data)
n_col = psb_cd_get_local_cols(desc_data)
nc2l = psb_cd_get_local_cols(baseprecv(1)%desc_data)
allocate(mlprec_wrk(1)%x2l(nc2l),mlprec_wrk(1)%y2l(nc2l), &
& mlprec_wrk(1)%tx(nc2l), stat=info)
mlprec_wrk(1)%x2l(:) = dzero
mlprec_wrk(1)%y2l(:) = dzero
mlprec_wrk(1)%tx(:) = dzero
if (info /= 0) then
info=4025
call psb_errpush(info,name,i_err=(/4*nc2l,0,0,0,0/),&
& a_err='real(kind(1.d0))')
goto 9999
end if
call psb_geaxpby(done,x,dzero,mlprec_wrk(1)%tx,&
& baseprecv(1)%base_desc,info)
call psb_geaxpby(done,x,dzero,mlprec_wrk(1)%x2l,&
& baseprecv(1)%base_desc,info)
mlprec_wrk(1)%y2l(:) = dzero
mlprec_wrk(1)%x2l(:) = x
!
! STEP 2
!
! Apply the base preconditioner at the finest level
!
call mld_baseprec_aply(done,baseprecv(1),mlprec_wrk(1)%x2l,&
& dzero,mlprec_wrk(1)%y2l,&
& baseprecv(1)%base_desc,&
& trans,work,info)
if (info /=0) then
call psb_errpush(4010,name,a_err=' baseprec_aply')
goto 9999
end if
!
! STEP 3
!
! Compute the residual at the finest level
!
mlprec_wrk(1)%tx = mlprec_wrk(1)%x2l
call psb_spmm(-done,baseprecv(1)%base_a,mlprec_wrk(1)%y2l,&
& done,mlprec_wrk(1)%tx,baseprecv(1)%base_desc,info,work=work)
if (info /=0) then
call psb_errpush(4001,name,a_err=' fine level residual')
goto 9999
end if
!
! STEP 4
!
! For each level but the finest one ...
!
do ilev=2, nlev
do ilev = 2, nlev
n_row = psb_cd_get_local_rows(baseprecv(ilev-1)%base_desc)
n_col = psb_cd_get_local_cols(baseprecv(ilev-1)%desc_data)
@ -479,15 +646,8 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
ismth = baseprecv(ilev)%iprcparm(mld_smooth_kind_)
icm = baseprecv(ilev)%iprcparm(mld_coarse_mat_)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name), &
& ' starting up sweep ',&
& ilev,allocated(baseprecv(ilev)%iprcparm),n_row,n_col,&
& nc2l, nr2l,ismth
allocate(mlprec_wrk(ilev)%tx(nc2l),mlprec_wrk(ilev)%y2l(nc2l),&
& mlprec_wrk(ilev)%x2l(nc2l), stat=info)
if (info /= 0) then
info=4025
call psb_errpush(info,name,i_err=(/4*nc2l,0,0,0,0/),&
@ -503,32 +663,29 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
!
! Apply the smoothed prolongator transpose
!
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name), ' up sweep ', ilev
call psb_halo(mlprec_wrk(ilev-1)%x2l,&
& baseprecv(ilev-1)%base_desc,info,work=work)
call psb_halo(mlprec_wrk(ilev-1)%tx,baseprecv(ilev-1)%base_desc,&
& info,work=work)
if (info == 0) call psb_csmm(done,baseprecv(ilev)%av(mld_sm_pr_t_),&
& mlprec_wrk(ilev-1)%x2l,dzero,mlprec_wrk(ilev)%x2l,info)
& mlprec_wrk(ilev-1)%tx,dzero,mlprec_wrk(ilev)%x2l,info)
else
!
! Apply the raw aggregation map transpose (take a shortcut)
!
mlprec_wrk(ilev)%x2l = dzero
do i=1,n_row
mlprec_wrk(ilev)%x2l(baseprecv(ilev)%mlia(i)) = &
& mlprec_wrk(ilev)%x2l(baseprecv(ilev)%mlia(i)) + &
& mlprec_wrk(ilev-1)%x2l(i)
& mlprec_wrk(ilev-1)%tx(i)
end do
end if
if (info /=0) then
call psb_errpush(4001,name,a_err='Error during restriction')
goto 9999
end if
if (icm == mld_repl_mat_) Then
if (icm ==mld_repl_mat_) then
call psb_sum(ictxt,mlprec_wrk(ilev)%x2l(1:nr2l))
else if (icm /= mld_distr_mat_) Then
else if (icm /= mld_distr_mat_) then
info = 4013
call psb_errpush(info,name,a_err='invalid mld_coarse_mat_',&
& i_Err=(/icm,0,0,0,0/))
@ -536,46 +693,32 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
endif
!
! update x2l
! Apply the base preconditioner
!
call psb_geaxpby(done,mlprec_wrk(ilev)%x2l,dzero,mlprec_wrk(ilev)%tx,&
& baseprecv(ilev)%base_desc,info)
if (info /= 0) then
call psb_errpush(4001,name,a_err='Error in update')
goto 9999
end if
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' done up sweep ', ilev
enddo
call mld_baseprec_aply(done,baseprecv(ilev),mlprec_wrk(ilev)%x2l,&
& dzero,mlprec_wrk(ilev)%y2l,baseprecv(ilev)%desc_data, 'N',work,info)
!
! STEP 3
!
! Apply the base preconditioner at the coarsest level
! Compute the residual (at all levels but the coarsest one)
!
call mld_baseprec_aply(done,baseprecv(nlev),mlprec_wrk(nlev)%x2l, &
& dzero, mlprec_wrk(nlev)%y2l,baseprecv(nlev)%desc_data,'N',work,info)
if (ilev < nlev) then
mlprec_wrk(ilev)%tx = mlprec_wrk(ilev)%x2l
if (info == 0) call psb_spmm(-done,baseprecv(ilev)%base_a,&
& mlprec_wrk(ilev)%y2l,done,mlprec_wrk(ilev)%tx,&
& baseprecv(ilev)%base_desc,info,work=work)
endif
if (info /=0) then
call psb_errpush(4010,name,a_err='baseprec_aply')
call psb_errpush(4001,name,a_err='Error on up sweep residual')
goto 9999
end if
if (debug_level >= psb_debug_inner_) write(debug_unit,*) &
& me,' ',trim(name), ' done baseprec_aply ', nlev
enddo
!
! STEP 4
! STEP 5
!
! For each level but the coarsest one ...
!
do ilev=nlev-1, 1, -1
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' starting down sweep',ilev
do ilev = nlev-1, 1, -1
ismth = baseprecv(ilev+1)%iprcparm(mld_smooth_kind_)
n_row = psb_cd_get_local_rows(baseprecv(ilev)%base_desc)
@ -585,15 +728,14 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
! Apply the smoothed prolongator
!
if (ismth == mld_smooth_prol_) &
& call psb_halo(mlprec_wrk(ilev+1)%y2l,baseprecv(ilev+1)%desc_data,&
& info,work=work)
& call psb_halo(mlprec_wrk(ilev+1)%y2l,&
& baseprecv(ilev+1)%desc_data,info,work=work)
if (info == 0) call psb_csmm(done,baseprecv(ilev+1)%av(mld_sm_pr_),&
& mlprec_wrk(ilev+1)%y2l, dzero,mlprec_wrk(ilev)%y2l,info)
& mlprec_wrk(ilev+1)%y2l,done,mlprec_wrk(ilev)%y2l,info)
else
!
! Apply the raw aggregation map (take a shortcut)
!
mlprec_wrk(ilev)%y2l(:) = dzero
do i=1, n_row
mlprec_wrk(ilev)%y2l(i) = mlprec_wrk(ilev)%y2l(i) + &
& mlprec_wrk(ilev+1)%y2l(baseprecv(ilev+1)%mlia(i))
@ -603,78 +745,117 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
call psb_errpush(4001,name,a_err='Error during prolongation')
goto 9999
end if
enddo
!
! Compute the residual
!
call psb_spmm(-done,baseprecv(ilev)%base_a,mlprec_wrk(ilev)%y2l,&
& done,mlprec_wrk(ilev)%tx,baseprecv(ilev)%base_desc,info,work=work)
! STEP 6
!
! Apply the base preconditioner
! Compute the output vector Y
!
if (info == 0) call mld_baseprec_aply(done,baseprecv(ilev),mlprec_wrk(ilev)%tx,&
& done,mlprec_wrk(ilev)%y2l,baseprecv(ilev)%base_desc, trans, work,info)
call psb_geaxpby(alpha,mlprec_wrk(1)%y2l,beta,y,&
& baseprecv(1)%base_desc,info)
if (info /=0) then
call psb_errpush(4001,name,a_err=' spmm/baseprec_aply')
call psb_errpush(4001,name,a_err='Error on final update')
goto 9999
end if
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' done down sweep',ilev
enddo
!
! STEP 5
!
! Compute the output vector Y
!
call psb_geaxpby(alpha,mlprec_wrk(1)%y2l,beta,y,baseprecv(1)%base_desc,info)
if (info /=0) then
call psb_errpush(4001,name,a_err=' Final update')
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
case(mld_pre_smooth_)
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine mlt_pre_ml_aply
subroutine mlt_post_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_dbaseprc_type), intent(in) :: baseprecv(:)
real(kind(0.d0)),intent(in) :: alpha,beta
real(kind(0.d0)),intent(in) :: x(:)
real(kind(0.d0)),intent(inout) :: y(:)
character :: trans
real(kind(0.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
real(kind(1.d0)), allocatable :: tx(:), ty(:), x2l(:), y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name='mlt_post_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
!
! Pre-smoothing
! Post-smoothing
!
! 1. X(1) = Xext
!
! 2. ! Apply the base preconditioner at the finest level.
! Y(1) = (K(1)^(-1))*X(1)
!
! 3. ! Compute the residual at the finest level.
! TX(1) = X(1) - A(1)*Y(1)
!
! 4. DO ilev=2, nlev
!
! ! Transfer the residual to the current (coarser) level.
! X(ilev) = AV(ilev; sm_pr_t_)*TX(ilev-1)
!
! ! Apply the base preconditioner at the current level.
! ! The sum over the subdomains is carried out in the
! ! application of K(ilev).
! Y(ilev) = (K(ilev)^(-1))*X(ilev)
! 2. DO ilev=2, nlev
!
! ! Compute the residual at the current level (except at
! ! the coarsest level).
! IF (ilev < nlev)
! TX(ilev) = (X(ilev)-A(ilev)*Y(ilev))
! ! Transfer X(ilev-1) to the next coarser level.
! X(ilev) = AV(ilev; sm_pr_t_)*X(ilev-1)
!
! ENDDO
!
! 5. DO ilev=nlev-1,1,-1
! 3.! Apply the preconditioner at the coarsest level.
! Y(nlev) = (K(nlev)^(-1))*X(nlev)
!
! ! Transfer Y(ilev+1) to the next finer level
! Y(ilev) = Y(ilev) + AV(ilev+1; sm_pr_)*Y(ilev+1)
! 4. DO ilev=nlev-1,1,-1
!
! ! Transfer Y(ilev+1) to the next finer level.
! Y(ilev) = AV(ilev+1; sm_pr_)*Y(ilev+1)
!
! ! Compute the residual at the current level and apply to it the
! ! base preconditioner. The sum over the subdomains is carried out
! ! in the application of K(ilev).
! Y(ilev) = Y(ilev) + (K(ilev)^(-1))*(X(ilev)-A(ilev)*Y(ilev))
!
! ENDDO
!
! 6. Yext = beta*Yext + alpha*Y(1)
! 5. Yext = beta*Yext + alpha*Y(1)
!
!
@ -682,55 +863,30 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
!
! Copy the input vector X
!
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' desc_data status',allocated(desc_data%matrix_data)
n_col = psb_cd_get_local_cols(desc_data)
nc2l = psb_cd_get_local_cols(baseprecv(1)%desc_data)
allocate(mlprec_wrk(1)%x2l(nc2l),mlprec_wrk(1)%y2l(nc2l), &
& mlprec_wrk(1)%tx(nc2l), stat=info)
if (info /= 0) then
info=4025
call psb_errpush(info,name,i_err=(/4*nc2l,0,0,0,0/),&
& a_err='real(kind(1.d0))')
goto 9999
end if
mlprec_wrk(1)%x2l(:) = dzero
mlprec_wrk(1)%y2l(:) = dzero
mlprec_wrk(1)%x2l(:) = x
!
! STEP 2
!
! Apply the base preconditioner at the finest level
!
call mld_baseprec_aply(done,baseprecv(1),mlprec_wrk(1)%x2l,&
& dzero,mlprec_wrk(1)%y2l,&
& baseprecv(1)%base_desc,&
& trans,work,info)
if (info /=0) then
call psb_errpush(4010,name,a_err=' baseprec_aply')
goto 9999
end if
!
! STEP 3
!
! Compute the residual at the finest level
!
mlprec_wrk(1)%tx = mlprec_wrk(1)%x2l
mlprec_wrk(1)%tx(:) = dzero
call psb_spmm(-done,baseprecv(1)%base_a,mlprec_wrk(1)%y2l,&
& done,mlprec_wrk(1)%tx,baseprecv(1)%base_desc,info,work=work)
if (info /=0) then
call psb_errpush(4001,name,a_err=' fine level residual')
goto 9999
end if
call psb_geaxpby(done,x,dzero,mlprec_wrk(1)%tx,&
& baseprecv(1)%base_desc,info)
call psb_geaxpby(done,x,dzero,mlprec_wrk(1)%x2l,&
& baseprecv(1)%base_desc,info)
!
! STEP 4
! STEP 2
!
! For each level but the finest one ...
!
do ilev = 2, nlev
do ilev=2, nlev
n_row = psb_cd_get_local_rows(baseprecv(ilev-1)%base_desc)
n_col = psb_cd_get_local_cols(baseprecv(ilev-1)%desc_data)
@ -739,8 +895,15 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
ismth = baseprecv(ilev)%iprcparm(mld_smooth_kind_)
icm = baseprecv(ilev)%iprcparm(mld_coarse_mat_)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name), &
& ' starting up sweep ',&
& ilev,allocated(baseprecv(ilev)%iprcparm),n_row,n_col,&
& nc2l, nr2l,ismth
allocate(mlprec_wrk(ilev)%tx(nc2l),mlprec_wrk(ilev)%y2l(nc2l),&
& mlprec_wrk(ilev)%x2l(nc2l), stat=info)
if (info /= 0) then
info=4025
call psb_errpush(info,name,i_err=(/4*nc2l,0,0,0,0/),&
@ -756,29 +919,32 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
!
! Apply the smoothed prolongator transpose
!
call psb_halo(mlprec_wrk(ilev-1)%tx,baseprecv(ilev-1)%base_desc,&
& info,work=work)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name), ' up sweep ', ilev
call psb_halo(mlprec_wrk(ilev-1)%x2l,&
& baseprecv(ilev-1)%base_desc,info,work=work)
if (info == 0) call psb_csmm(done,baseprecv(ilev)%av(mld_sm_pr_t_),&
& mlprec_wrk(ilev-1)%tx,dzero,mlprec_wrk(ilev)%x2l,info)
& mlprec_wrk(ilev-1)%x2l,dzero,mlprec_wrk(ilev)%x2l,info)
else
!
! Apply the raw aggregation map transpose (take a shortcut)
!
mlprec_wrk(ilev)%x2l = dzero
do i=1,n_row
mlprec_wrk(ilev)%x2l(baseprecv(ilev)%mlia(i)) = &
& mlprec_wrk(ilev)%x2l(baseprecv(ilev)%mlia(i)) + &
& mlprec_wrk(ilev-1)%tx(i)
& mlprec_wrk(ilev-1)%x2l(i)
end do
end if
if (info /=0) then
call psb_errpush(4001,name,a_err='Error during restriction')
goto 9999
end if
if (icm ==mld_repl_mat_) then
if (icm == mld_repl_mat_) Then
call psb_sum(ictxt,mlprec_wrk(ilev)%x2l(1:nr2l))
else if (icm /= mld_distr_mat_) then
else if (icm /= mld_distr_mat_) Then
info = 4013
call psb_errpush(info,name,a_err='invalid mld_coarse_mat_',&
& i_Err=(/icm,0,0,0,0/))
@ -786,32 +952,46 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
endif
!
! Apply the base preconditioner
! update x2l
!
call mld_baseprec_aply(done,baseprecv(ilev),mlprec_wrk(ilev)%x2l,&
& dzero,mlprec_wrk(ilev)%y2l,baseprecv(ilev)%desc_data, 'N',work,info)
call psb_geaxpby(done,mlprec_wrk(ilev)%x2l,dzero,mlprec_wrk(ilev)%tx,&
& baseprecv(ilev)%base_desc,info)
if (info /= 0) then
call psb_errpush(4001,name,a_err='Error in update')
goto 9999
end if
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' done up sweep ', ilev
enddo
!
! Compute the residual (at all levels but the coarsest one)
! STEP 3
!
if (ilev < nlev) then
mlprec_wrk(ilev)%tx = mlprec_wrk(ilev)%x2l
if (info == 0) call psb_spmm(-done,baseprecv(ilev)%base_a,&
& mlprec_wrk(ilev)%y2l,done,mlprec_wrk(ilev)%tx,&
& baseprecv(ilev)%base_desc,info,work=work)
endif
! Apply the base preconditioner at the coarsest level
!
call mld_baseprec_aply(done,baseprecv(nlev),mlprec_wrk(nlev)%x2l, &
& dzero, mlprec_wrk(nlev)%y2l,baseprecv(nlev)%desc_data,'N',work,info)
if (info /=0) then
call psb_errpush(4001,name,a_err='Error on up sweep residual')
call psb_errpush(4010,name,a_err='baseprec_aply')
goto 9999
end if
enddo
if (debug_level >= psb_debug_inner_) write(debug_unit,*) &
& me,' ',trim(name), ' done baseprec_aply ', nlev
!
! STEP 5
! STEP 4
!
! For each level but the coarsest one ...
!
do ilev = nlev-1, 1, -1
do ilev=nlev-1, 1, -1
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' starting down sweep',ilev
ismth = baseprecv(ilev+1)%iprcparm(mld_smooth_kind_)
n_row = psb_cd_get_local_rows(baseprecv(ilev)%base_desc)
@ -821,14 +1001,15 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
! Apply the smoothed prolongator
!
if (ismth == mld_smooth_prol_) &
& call psb_halo(mlprec_wrk(ilev+1)%y2l,&
& baseprecv(ilev+1)%desc_data,info,work=work)
& call psb_halo(mlprec_wrk(ilev+1)%y2l,baseprecv(ilev+1)%desc_data,&
& info,work=work)
if (info == 0) call psb_csmm(done,baseprecv(ilev+1)%av(mld_sm_pr_),&
& mlprec_wrk(ilev+1)%y2l,done,mlprec_wrk(ilev)%y2l,info)
& mlprec_wrk(ilev+1)%y2l, dzero,mlprec_wrk(ilev)%y2l,info)
else
!
! Apply the raw aggregation map (take a shortcut)
!
mlprec_wrk(ilev)%y2l(:) = dzero
do i=1, n_row
mlprec_wrk(ilev)%y2l(i) = mlprec_wrk(ilev)%y2l(i) + &
& mlprec_wrk(ilev+1)%y2l(baseprecv(ilev+1)%mlia(i))
@ -838,23 +1019,105 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
call psb_errpush(4001,name,a_err='Error during prolongation')
goto 9999
end if
!
! Compute the residual
!
call psb_spmm(-done,baseprecv(ilev)%base_a,mlprec_wrk(ilev)%y2l,&
& done,mlprec_wrk(ilev)%tx,baseprecv(ilev)%base_desc,info,work=work)
!
! Apply the base preconditioner
!
if (info == 0) call mld_baseprec_aply(done,baseprecv(ilev),mlprec_wrk(ilev)%tx,&
& done,mlprec_wrk(ilev)%y2l,baseprecv(ilev)%base_desc, trans, work,info)
if (info /=0) then
call psb_errpush(4001,name,a_err=' spmm/baseprec_aply')
goto 9999
end if
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' done down sweep',ilev
enddo
!
! STEP 6
! STEP 5
!
! Compute the output vector Y
!
call psb_geaxpby(alpha,mlprec_wrk(1)%y2l,beta,y,&
& baseprecv(1)%base_desc,info)
call psb_geaxpby(alpha,mlprec_wrk(1)%y2l,beta,y,baseprecv(1)%base_desc,info)
if (info /=0) then
call psb_errpush(4001,name,a_err='Error on final update')
call psb_errpush(4001,name,a_err=' Final update')
goto 9999
end if
case(mld_twoside_smooth_)
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine mlt_post_ml_aply
subroutine mlt_twoside_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_dbaseprc_type), intent(in) :: baseprecv(:)
real(kind(0.d0)),intent(in) :: alpha,beta
real(kind(0.d0)),intent(in) :: x(:)
real(kind(0.d0)),intent(inout) :: y(:)
character :: trans
real(kind(0.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
real(kind(1.d0)), allocatable :: tx(:), ty(:), x2l(:), y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name='mlt_twoside_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
!
! Pre- and post-smoothing (symmetrized)
@ -1093,21 +1356,7 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
goto 9999
end if
case default
info = 4013
call psb_errpush(info,name,a_err='invalid smooth_pos',&
& i_Err=(/baseprecv(2)%iprcparm(mld_smooth_pos_),0,0,0,0/))
goto 9999
end select
case default
info = 4013
call psb_errpush(info,name,a_err='invalid mltype',&
& i_Err=(/baseprecv(2)%iprcparm(mld_ml_type_),0,0,0,0/))
goto 9999
end select
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
@ -1126,5 +1375,10 @@ subroutine mld_dmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
end if
return
end subroutine mlt_twoside_ml_aply
end subroutine mld_dmlprec_aply

335
mlprec/mld_zmlprec_aply.f90
Unescape Escape View File

@ -186,12 +186,8 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
complex(kind(1.d0)), allocatable :: tx(:),ty(:),x2l(:),y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name='mld_zmlprec_aply'
name = 'mld_zmlprec_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
@ -204,13 +200,6 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
select case(baseprecv(2)%iprcparm(mld_ml_type_))
@ -224,6 +213,108 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_add_ml_)
call add_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_mult_ml_)
!
! Multiplicative multilevel (multiplicative among the levels, additive inside
! each level)
!
! Pre/post-smoothing versions
!
select case(baseprecv(2)%iprcparm(mld_smooth_pos_))
case(mld_post_smooth_)
call mlt_post_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_pre_smooth_)
call mlt_pre_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_twoside_smooth_)
call mlt_twoside_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case default
info = 4013
call psb_errpush(info,name,a_err='invalid smooth_pos',&
& i_Err=(/baseprecv(2)%iprcparm(mld_smooth_pos_),0,0,0,0/))
goto 9999
end select
case default
info = 4013
call psb_errpush(info,name,a_err='invalid mltype',&
& i_Err=(/baseprecv(2)%iprcparm(mld_ml_type_),0,0,0,0/))
goto 9999
end select
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
contains
subroutine add_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_zbaseprc_type), intent(in) :: baseprecv(:)
complex(kind(1.d0)),intent(in) :: alpha,beta
complex(kind(1.d0)),intent(in) :: x(:)
complex(kind(1.d0)),intent(inout) :: y(:)
character :: trans
complex(kind(1.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
complex(kind(1.d0)), allocatable :: tx(:),ty(:),x2l(:),y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name = 'add_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
!
! Additive multilevel
!
@ -401,18 +492,72 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
goto 9999
end if
case(mld_mult_ml_)
!
! Multiplicative multilevel (multiplicative among the levels, additive inside
! each level)
!
! Pre/post-smoothing versions
!
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
select case(baseprecv(2)%iprcparm(mld_smooth_pos_))
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine add_ml_aply
subroutine mlt_post_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_zbaseprc_type), intent(in) :: baseprecv(:)
complex(kind(1.d0)),intent(in) :: alpha,beta
complex(kind(1.d0)),intent(in) :: x(:)
complex(kind(1.d0)),intent(inout) :: y(:)
character :: trans
complex(kind(1.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
complex(kind(1.d0)), allocatable :: tx(:),ty(:),x2l(:),y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name = 'mlt_post_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
case(mld_post_smooth_)
!
! Post-smoothing
@ -638,7 +783,73 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
goto 9999
end if
case(mld_pre_smooth_)
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine mlt_post_ml_aply
subroutine mlt_pre_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_zbaseprc_type), intent(in) :: baseprecv(:)
complex(kind(1.d0)),intent(in) :: alpha,beta
complex(kind(1.d0)),intent(in) :: x(:)
complex(kind(1.d0)),intent(inout) :: y(:)
character :: trans
complex(kind(1.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
complex(kind(1.d0)), allocatable :: tx(:),ty(:),x2l(:),y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name = 'mlt_pre_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
!
! Pre-smoothing
@ -855,7 +1066,70 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
case(mld_twoside_smooth_)
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
call psb_errpush(4000,name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine mlt_pre_ml_aply
subroutine mlt_twoside_ml_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
implicit none
! Arguments
type(psb_desc_type),intent(in) :: desc_data
type(mld_zbaseprc_type), intent(in) :: baseprecv(:)
complex(kind(1.d0)),intent(in) :: alpha,beta
complex(kind(1.d0)),intent(in) :: x(:)
complex(kind(1.d0)),intent(inout) :: y(:)
character :: trans
complex(kind(1.d0)),target :: work(:)
integer, intent(out) :: info
! Local variables
integer :: n_row,n_col
integer :: ictxt,np,me,i, nr2l,nc2l,err_act
integer :: debug_level, debug_unit
integer :: ismth, nlev, ilev, icm
character(len=20) :: name
type psb_mlprec_wrk_type
complex(kind(1.d0)), allocatable :: tx(:),ty(:),x2l(:),y2l(:)
end type psb_mlprec_wrk_type
type(psb_mlprec_wrk_type), allocatable :: mlprec_wrk(:)
name = 'mlt_twoside_ml_aply'
info = 0
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_data)
call psb_info(ictxt, me, np)
if (debug_level >= psb_debug_inner_) &
& write(debug_unit,*) me,' ',trim(name),&
& ' Entry ', size(baseprecv)
nlev = size(baseprecv)
allocate(mlprec_wrk(nlev),stat=info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='Allocate')
goto 9999
end if
!
! Pre- and post-smoothing (symmetrized)
@ -1096,21 +1370,7 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
goto 9999
end if
case default
info = 4013
call psb_errpush(info,name,a_err='invalid smooth_pos',&
& i_Err=(/baseprecv(2)%iprcparm(mld_smooth_pos_),0,0,0,0/))
goto 9999
end select
case default
info = 4013
call psb_errpush(info,name,a_err='invalid mltype',&
& i_Err=(/baseprecv(2)%iprcparm(mld_ml_type_),0,0,0,0/))
goto 9999
end select
deallocate(mlprec_wrk,stat=info)
if (info /= 0) then
@ -1128,6 +1388,7 @@ subroutine mld_zmlprec_aply(alpha,baseprecv,x,beta,y,desc_data,trans,work,info)
return
end if
return
end subroutine mlt_twoside_ml_aply
end subroutine mld_zmlprec_aply

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