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645 lines
18 KiB
Fortran
645 lines
18 KiB
Fortran
!
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!
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! AMG4PSBLAS version 1.0
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! Algebraic Multigrid Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.7)
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!
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!
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subroutine amg_d_richards_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,trans,&
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& sweeps,work,wv,info,init,initu)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_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(amg_d_richards_smoother_type), intent(inout) :: sm
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type(psb_d_vect_type), intent(inout) :: x
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type(psb_d_vect_type), intent(inout) :: y
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real(psb_dpk_), intent(in) :: alpha, beta
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character(len=1), intent(in) :: trans
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integer(psb_ipk_), intent(in) :: sweeps
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real(psb_dpk_), target, intent(inout) :: work(:)
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type(psb_d_vect_type), intent(inout) :: wv(:)
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integer(psb_ipk_), intent(out) :: info
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character, intent(in), optional :: init
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type(psb_d_vect_type), intent(inout), optional :: initu
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integer(psb_ipk_) :: n_col, err_act, i
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character :: trans_, init_
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real(psb_dpk_), pointer :: aux(:)
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character(len=32) :: name='d_richards_smoother_apply_v'
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call psb_erractionsave(err_act)
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info = psb_success_
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trans_ = psb_toupper(trans)
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if ((trans_ /= 'N').and.(trans_ /= 'T').and.(trans_ /= 'C')) then
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call psb_errpush(psb_err_iarg_invalid_i_,name)
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goto 9999
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end if
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if (sweeps < 0) then
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info = psb_err_iarg_neg_
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call psb_errpush(info,name,i_err=(/itwo,sweeps,izero,izero,izero/))
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goto 9999
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end if
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if (.not.allocated(sm%sv)) then
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info = psb_err_invalid_cd_state_
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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 (.not.associated(sm%pa)) then
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info = psb_err_invalid_cd_state_
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call psb_errpush(info,name,a_err='matrix pointer not associated')
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goto 9999
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end if
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if (size(wv) < 3) then
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info = psb_err_internal_error_
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call psb_errpush(info,name,a_err='workspace vectors too small')
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goto 9999
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end if
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init_ = 'Z'
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if (present(init)) init_ = psb_toupper(init)
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n_col = desc_data%get_local_cols()
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if (4*n_col <= size(work)) then
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aux => work(:)
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else
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allocate(aux(4*n_col),stat=info)
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if (info /= psb_success_) then
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info = psb_err_alloc_request_
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call psb_errpush(info,name,i_err=(/4*n_col,izero,izero,izero,izero/),&
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& a_err='real(psb_dpk_)')
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goto 9999
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end if
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end if
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associate(tx => wv(1), ty => wv(2), tz => wv(3))
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select case(init_)
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case('Z')
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call psb_geaxpby(dzero,x,dzero,ty,desc_data,info)
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case('Y')
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call psb_geaxpby(done,y,dzero,ty,desc_data,info)
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case('U')
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if (.not.present(initu)) then
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info = psb_err_internal_error_
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call psb_errpush(info,name,a_err='missing initu to smoother_apply_vect')
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goto 9999
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end if
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call psb_geaxpby(done,initu,dzero,ty,desc_data,info)
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case default
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info = psb_err_internal_error_
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call psb_errpush(info,name,a_err='wrong init to smoother_apply_vect')
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goto 9999
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end select
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do i = 1, sweeps
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call psb_geaxpby(done,x,dzero,tx,desc_data,info)
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call psb_spmm(-done,sm%pa,ty,done,tx,desc_data,info,work=aux,trans=trans_)
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if (info /= psb_success_) exit
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call sm%sv%apply(done,tx,dzero,tz,desc_data,trans_,aux,wv(4:),info,init='Y')
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if (info /= psb_success_) exit
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call psb_geaxpby(sm%omega,tz,done,ty,desc_data,info)
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if (info /= psb_success_) exit
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end do
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if (info == psb_success_) call psb_geaxpby(alpha,ty,beta,y,desc_data,info)
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end associate
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if (.not.(4*n_col <= size(work))) deallocate(aux)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine amg_d_richards_smoother_apply_vect
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subroutine amg_d_richards_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,&
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& sweeps,work,info,init,initu)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_apply
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implicit none
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type(psb_desc_type), intent(in) :: desc_data
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class(amg_d_richards_smoother_type), intent(inout) :: sm
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real(psb_dpk_), intent(inout) :: x(:)
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real(psb_dpk_), intent(inout) :: y(:)
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real(psb_dpk_), intent(in) :: alpha, beta
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character(len=1), intent(in) :: trans
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integer(psb_ipk_), intent(in) :: sweeps
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real(psb_dpk_), target, intent(inout) :: work(:)
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integer(psb_ipk_), intent(out) :: info
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character, intent(in), optional :: init
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real(psb_dpk_), intent(inout), optional :: initu(:)
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integer(psb_ipk_) :: n_col, err_act, i
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character :: trans_, init_
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real(psb_dpk_), pointer :: aux(:)
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real(psb_dpk_), allocatable :: tx(:), ty(:), tz(:)
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character(len=30) :: name='d_richards_smoother_apply'
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call psb_erractionsave(err_act)
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info = psb_success_
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trans_ = psb_toupper(trans)
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if ((trans_ /= 'N').and.(trans_ /= 'T').and.(trans_ /= 'C')) then
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call psb_errpush(psb_err_iarg_invalid_i_,name)
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goto 9999
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end if
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if (sweeps < 0) then
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info = psb_err_iarg_neg_
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call psb_errpush(info,name,i_err=(/itwo,sweeps,izero,izero,izero/))
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goto 9999
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end if
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if (.not.allocated(sm%sv)) then
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info = psb_err_invalid_cd_state_
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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 (.not.associated(sm%pa)) then
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info = psb_err_invalid_cd_state_
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call psb_errpush(info,name,a_err='matrix pointer not associated')
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goto 9999
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end if
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n_col = desc_data%get_local_cols()
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if (4*n_col <= size(work)) then
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aux => work(:)
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else
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allocate(aux(4*n_col),stat=info)
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if (info /= psb_success_) then
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info = psb_err_alloc_request_
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call psb_errpush(info,name,i_err=(/4*n_col,izero,izero,izero,izero/),&
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& a_err='real(psb_dpk_)')
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goto 9999
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end if
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end if
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allocate(tx(size(x)),ty(size(y)),tz(size(y)),stat=info)
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if (info /= 0) then
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info = psb_err_alloc_request_
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call psb_errpush(info,name,a_err='alloc tx/ty/tz')
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goto 9999
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end if
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init_ = 'Z'
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if (present(init)) init_ = psb_toupper(init)
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select case(init_)
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case('Z')
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ty(:) = dzero
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case('Y')
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ty(:) = y(:)
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case('U')
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if (.not.present(initu)) then
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info = psb_err_internal_error_
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call psb_errpush(info,name,a_err='missing initu to smoother_apply')
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goto 9999
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end if
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ty(:) = initu(:)
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case default
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info = psb_err_internal_error_
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call psb_errpush(info,name,a_err='wrong init to smoother_apply')
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goto 9999
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end select
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do i = 1, sweeps
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tx(:) = x(:)
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call psb_spmm(-done,sm%pa,ty,done,tx,desc_data,info,work=aux,trans=trans_)
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if (info /= psb_success_) exit
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call sm%sv%apply(done,tx,dzero,tz,desc_data,trans_,aux,info,init='Y')
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if (info /= psb_success_) exit
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ty(:) = ty(:) + sm%omega*tz(:)
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end do
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if (info == psb_success_) y(:) = beta*y(:) + alpha*ty(:)
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deallocate(tx,ty,tz,stat=info)
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if (.not.(4*n_col <= size(work))) deallocate(aux)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine amg_d_richards_smoother_apply
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subroutine amg_d_richards_smoother_bld(a,desc_a,sm,info,amold,vmold,imold)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_bld
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implicit none
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type(psb_dspmat_type), intent(inout), target :: a
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type(psb_desc_type), intent(inout) :: desc_a
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class(amg_d_richards_smoother_type), intent(inout) :: sm
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integer(psb_ipk_), intent(out) :: info
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class(psb_d_base_sparse_mat), intent(in), optional :: amold
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class(psb_d_base_vect_type), intent(in), optional :: vmold
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class(psb_i_base_vect_type), intent(in), optional :: imold
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integer(psb_ipk_) :: err_act
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character(len=28) :: name='d_richards_smoother_bld'
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info = psb_success_
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call psb_erractionsave(err_act)
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sm%pa => a
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if (sm%omega == dzero) sm%omega = done
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if (.not.allocated(sm%sv)) then
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info = psb_err_invalid_cd_state_
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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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call sm%sv%build(a,desc_a,info,amold=amold,vmold=vmold,imold=imold)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='solver build')
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine amg_d_richards_smoother_bld
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subroutine amg_d_richards_smoother_cnv(sm,info,amold,vmold,imold)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_cnv
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implicit none
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class(amg_d_richards_smoother_type), intent(inout) :: sm
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integer(psb_ipk_), intent(out) :: info
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class(psb_d_base_sparse_mat), intent(in), optional :: amold
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class(psb_d_base_vect_type), intent(in), optional :: vmold
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class(psb_i_base_vect_type), intent(in), optional :: imold
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integer(psb_ipk_) :: err_act
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character(len=28) :: name='d_richards_smoother_cnv'
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info = psb_success_
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call psb_erractionsave(err_act)
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if (allocated(sm%sv)) call sm%sv%cnv(info,amold=amold,vmold=vmold,imold=imold)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='solver cnv')
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine amg_d_richards_smoother_cnv
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subroutine amg_d_richards_smoother_dmp(sm,desc,level,info,prefix,head,smoother,solver,global_num)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_dmp
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implicit none
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class(amg_d_richards_smoother_type), intent(in) :: sm
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type(psb_desc_type), intent(in) :: desc
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integer(psb_ipk_), intent(in) :: level
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integer(psb_ipk_), intent(out) :: info
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character(len=*), intent(in), optional :: prefix, head
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logical, intent(in), optional :: smoother, solver, global_num
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info = psb_success_
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if (allocated(sm%sv)) call sm%sv%dump(desc,level,info,solver=solver,prefix=prefix,global_num=global_num)
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end subroutine amg_d_richards_smoother_dmp
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subroutine amg_d_richards_smoother_clone(sm,smout,info)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_clone
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implicit none
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class(amg_d_richards_smoother_type), intent(inout) :: sm
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class(amg_d_base_smoother_type), allocatable, intent(inout) :: smout
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act
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info = psb_success_
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call psb_erractionsave(err_act)
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if (allocated(smout)) then
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call smout%free(info)
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if (info == psb_success_) deallocate(smout, stat=info)
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end if
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if (info == psb_success_) allocate(amg_d_richards_smoother_type :: smout, stat=info)
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if (info /= 0) then
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info = psb_err_alloc_dealloc_
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goto 9999
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end if
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select type(smo => smout)
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type is (amg_d_richards_smoother_type)
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smo%global_nnz_tot = sm%global_nnz_tot
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smo%checkres = sm%checkres
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smo%printres = sm%printres
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smo%checkiter = sm%checkiter
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smo%printiter = sm%printiter
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smo%tol = sm%tol
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smo%omega = sm%omega
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smo%pa => sm%pa
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if (allocated(sm%sv)) then
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allocate(smo%sv,mold=sm%sv,stat=info)
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if (info == psb_success_) call sm%sv%clone(smo%sv,info)
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end if
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class default
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info = psb_err_internal_error_
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end select
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if (info /= 0) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine amg_d_richards_smoother_clone
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subroutine amg_d_richards_smoother_clone_settings(sm,smout,info)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_clone_settings
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implicit none
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class(amg_d_richards_smoother_type), intent(inout) :: sm
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class(amg_d_base_smoother_type), intent(inout) :: smout
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act
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character(len=36) :: name='d_richards_smoother_clone_settings'
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call psb_erractionsave(err_act)
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info = psb_success_
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select type(smout)
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class is(amg_d_richards_smoother_type)
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smout%pa => null()
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smout%global_nnz_tot = 0
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smout%checkres = sm%checkres
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smout%printres = sm%printres
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smout%checkiter = sm%checkiter
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smout%printiter = sm%printiter
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smout%tol = sm%tol
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smout%omega = sm%omega
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if (allocated(smout%sv)) then
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if (.not.same_type_as(sm%sv,smout%sv)) then
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call smout%sv%free(info)
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if (info == 0) deallocate(smout%sv,stat=info)
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end if
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end if
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if (info == 0) then
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if (allocated(smout%sv)) then
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if (same_type_as(sm%sv,smout%sv)) then
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call sm%sv%clone_settings(smout%sv,info)
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else
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info = psb_err_internal_error_
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end if
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else
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allocate(smout%sv,mold=sm%sv,stat=info)
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if (info == 0) call sm%sv%clone_settings(smout%sv,info)
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end if
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end if
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class default
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info = psb_err_internal_error_
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end select
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if (info /= 0) then
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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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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine amg_d_richards_smoother_clone_settings
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subroutine amg_d_richards_smoother_clear_data(sm,info)
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use psb_base_mod
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_clear_data
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implicit none
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class(amg_d_richards_smoother_type), intent(inout) :: sm
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act
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character(len=31) :: name='d_richards_smoother_clear_data'
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|
|
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call psb_erractionsave(err_act)
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|
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info = psb_success_
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sm%pa => null()
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sm%global_nnz_tot = 0
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if ((info == 0).and.allocated(sm%sv)) call sm%sv%clear_data(info)
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if (info /= 0) then
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info = psb_err_internal_error_
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call psb_errpush(info,name)
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|
goto 9999
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|
end if
|
|
|
|
call psb_erractionrestore(err_act)
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|
return
|
|
|
|
9999 call psb_error_handler(err_act)
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|
return
|
|
|
|
end subroutine amg_d_richards_smoother_clear_data
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|
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subroutine amg_d_richards_smoother_descr(sm,info,iout,coarse,prefix)
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|
|
|
use psb_base_mod
|
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use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_descr
|
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implicit none
|
|
|
|
class(amg_d_richards_smoother_type), intent(in) :: sm
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_), intent(in), optional :: iout
|
|
logical, intent(in), optional :: coarse
|
|
character(len=*), intent(in), optional :: prefix
|
|
|
|
integer(psb_ipk_) :: iout_
|
|
character(1024) :: prefix_
|
|
|
|
info = psb_success_
|
|
iout_ = psb_out_unit
|
|
if (present(iout)) iout_ = iout
|
|
prefix_ = ''
|
|
if (present(prefix)) prefix_ = prefix
|
|
|
|
write(iout_,*) trim(prefix_), ' Richardson smoother'
|
|
write(iout_,*) trim(prefix_), ' Relaxation omega: ', sm%omega
|
|
if (allocated(sm%sv)) then
|
|
write(iout_,*) trim(prefix_), ' Preconditioner details:'
|
|
call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
|
|
end if
|
|
|
|
end subroutine amg_d_richards_smoother_descr
|
|
|
|
|
|
subroutine amg_d_richards_smoother_cseti(sm,what,val,info,idx)
|
|
|
|
use psb_base_mod
|
|
use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_cseti
|
|
implicit none
|
|
|
|
class(amg_d_richards_smoother_type), intent(inout) :: sm
|
|
character(len=*), intent(in) :: what
|
|
integer(psb_ipk_), intent(in) :: val
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_), intent(in), optional :: idx
|
|
|
|
integer(psb_ipk_) :: err_act
|
|
|
|
info = psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
select case(psb_toupper(what))
|
|
case('SMOOTHER_RESIDUAL')
|
|
sm%checkiter = val
|
|
case('SMOOTHER_ITRACE')
|
|
sm%printiter = val
|
|
case default
|
|
call sm%amg_d_base_smoother_type%set(what,val,info,idx=idx)
|
|
end select
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
return
|
|
|
|
end subroutine amg_d_richards_smoother_cseti
|
|
|
|
|
|
subroutine amg_d_richards_smoother_csetc(sm,what,val,info,idx)
|
|
|
|
use psb_base_mod
|
|
use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_csetc
|
|
implicit none
|
|
|
|
class(amg_d_richards_smoother_type), intent(inout) :: sm
|
|
character(len=*), intent(in) :: what
|
|
character(len=*), intent(in) :: val
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_), intent(in), optional :: idx
|
|
|
|
integer(psb_ipk_) :: err_act
|
|
character(len=30) :: name='d_richards_smoother_csetc'
|
|
|
|
info = psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
select case(psb_toupper(trim(what)))
|
|
case('SMOOTHER_STOP')
|
|
select case(psb_toupper(trim(val)))
|
|
case('T','TRUE')
|
|
sm%checkres = .true.
|
|
case('F','FALSE')
|
|
sm%checkres = .false.
|
|
end select
|
|
case('SMOOTHER_TRACE')
|
|
select case(psb_toupper(trim(val)))
|
|
case('T','TRUE')
|
|
sm%printres = .true.
|
|
case('F','FALSE')
|
|
sm%printres = .false.
|
|
end select
|
|
case default
|
|
call sm%amg_d_base_smoother_type%set(what,val,info,idx=idx)
|
|
end select
|
|
|
|
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 call psb_error_handler(err_act)
|
|
return
|
|
|
|
end subroutine amg_d_richards_smoother_csetc
|
|
|
|
|
|
subroutine amg_d_richards_smoother_csetr(sm,what,val,info,idx)
|
|
|
|
use psb_base_mod
|
|
use amg_d_richards_smoother, amg_protect_name => amg_d_richards_smoother_csetr
|
|
implicit none
|
|
|
|
class(amg_d_richards_smoother_type), intent(inout) :: sm
|
|
character(len=*), intent(in) :: what
|
|
real(psb_dpk_), intent(in) :: val
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_), intent(in), optional :: idx
|
|
|
|
integer(psb_ipk_) :: err_act
|
|
|
|
info = psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
select case(psb_toupper(what))
|
|
case('SMOOTHER_STOPTOL')
|
|
sm%tol = val
|
|
case('RICHARDSON_OMEGA','SMOOTHER_OMEGA','OMEGA')
|
|
sm%omega = val
|
|
case default
|
|
call sm%amg_d_base_smoother_type%set(what,val,info,idx=idx)
|
|
end select
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
return
|
|
|
|
end subroutine amg_d_richards_smoother_csetr
|