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571 lines
15 KiB
Fortran
571 lines
15 KiB
Fortran
module psb_s_bjacprec
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use psb_s_base_prec_mod
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type, extends(psb_s_base_prec_type) :: psb_s_bjac_prec_type
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integer, allocatable :: iprcparm(:)
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type(psb_sspmat_type), allocatable :: av(:)
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real(psb_spk_), allocatable :: d(:)
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contains
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procedure, pass(prec) :: apply => psb_s_bjac_apply
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procedure, pass(prec) :: precbld => psb_s_bjac_precbld
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procedure, pass(prec) :: precinit => psb_s_bjac_precinit
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procedure, pass(prec) :: precseti => psb_s_bjac_precseti
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procedure, pass(prec) :: precsetr => psb_s_bjac_precsetr
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procedure, pass(prec) :: precsetc => psb_s_bjac_precsetc
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procedure, pass(prec) :: precfree => psb_s_bjac_precfree
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procedure, pass(prec) :: precdescr => psb_s_bjac_precdescr
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procedure, pass(prec) :: sizeof => psb_s_bjac_sizeof
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end type psb_s_bjac_prec_type
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private :: psb_s_bjac_apply, psb_s_bjac_precbld, psb_s_bjac_precseti,&
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& psb_s_bjac_precsetr, psb_s_bjac_precsetc, psb_s_bjac_sizeof,&
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& psb_s_bjac_precinit, psb_s_bjac_precfree, psb_s_bjac_precdescr
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character(len=15), parameter, private :: &
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& fact_names(0:2)=(/'None ','ILU(n) ',&
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& 'ILU(eps) '/)
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contains
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subroutine psb_s_bjac_apply(alpha,prec,x,beta,y,desc_data,info,trans,work)
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use psb_base_mod
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type(psb_desc_type),intent(in) :: desc_data
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class(psb_s_bjac_prec_type), intent(in) :: prec
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real(psb_spk_),intent(in) :: alpha,beta
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real(psb_spk_),intent(inout) :: x(:)
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real(psb_spk_),intent(inout) :: y(:)
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integer, intent(out) :: info
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character(len=1), optional :: trans
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real(psb_spk_),intent(inout), optional, target :: work(:)
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! Local variables
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integer :: n_row,n_col
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real(psb_spk_), pointer :: ww(:), aux(:)
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integer :: ictxt,np,me, err_act, int_err(5)
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integer :: debug_level, debug_unit
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character :: trans_
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character(len=20) :: name='s_bjac_prec_apply'
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character(len=20) :: ch_err
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info = psb_success_
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call psb_erractionsave(err_act)
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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ictxt = desc_data%get_context()
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call psb_info(ictxt, me, np)
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trans_ = psb_toupper(trans)
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select case(trans_)
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case('N','T','C')
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! Ok
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case default
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call psb_errpush(psb_err_iarg_invalid_i_,name)
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goto 9999
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end select
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n_row = desc_data%get_local_rows()
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n_col = desc_data%get_local_cols()
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if (size(x) < n_row) then
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info = 36
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call psb_errpush(info,name,i_err=(/2,n_row,0,0,0/))
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goto 9999
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end if
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if (size(y) < n_row) then
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info = 36
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call psb_errpush(info,name,i_err=(/3,n_row,0,0,0/))
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goto 9999
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end if
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if (.not.allocated(prec%d)) then
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info = 1124
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call psb_errpush(info,name,a_err="preconditioner: D")
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goto 9999
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end if
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if (size(prec%d) < n_row) then
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info = 1124
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call psb_errpush(info,name,a_err="preconditioner: D")
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goto 9999
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end if
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if (n_col <= size(work)) then
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ww => work(1:n_col)
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if ((4*n_col+n_col) <= size(work)) then
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aux => work(n_col+1:)
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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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call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
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goto 9999
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end if
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endif
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else
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allocate(ww(n_col),aux(4*n_col),stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
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goto 9999
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end if
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endif
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select case(prec%iprcparm(psb_f_type_))
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case(psb_f_ilu_n_)
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select case(trans_)
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case('N')
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call psb_spsm(sone,prec%av(psb_l_pr_),x,szero,ww,desc_data,info,&
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& trans=trans_,scale='L',diag=prec%d,choice=psb_none_,work=aux)
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if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_u_pr_),ww,beta,y,desc_data,info,&
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& trans=trans_,scale='U',choice=psb_none_, work=aux)
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case('T','C')
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call psb_spsm(sone,prec%av(psb_u_pr_),x,szero,ww,desc_data,info,&
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& trans=trans_,scale='L',diag=prec%d,choice=psb_none_, work=aux)
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if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_l_pr_),ww,beta,y,desc_data,info,&
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& trans=trans_,scale='U',choice=psb_none_,work=aux)
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end select
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if (info /= psb_success_) then
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ch_err="psb_spsm"
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goto 9999
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end if
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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='Invalid factorization')
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goto 9999
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end select
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call psb_halo(y,desc_data,info,data=psb_comm_mov_)
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if (n_col <= size(work)) then
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if ((4*n_col+n_col) <= size(work)) then
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else
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deallocate(aux)
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endif
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else
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deallocate(ww,aux)
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endif
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_errpush(info,name,i_err=int_err,a_err=ch_err)
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_s_bjac_apply
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subroutine psb_s_bjac_precinit(prec,info)
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use psb_base_mod
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Implicit None
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class(psb_s_bjac_prec_type),intent(inout) :: prec
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integer, intent(out) :: info
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Integer :: err_act, nrow
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character(len=20) :: name='s_null_precinit'
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call psb_erractionsave(err_act)
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info = psb_success_
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call psb_realloc(psb_ifpsz,prec%iprcparm,info)
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if (info /= psb_success_) then
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info = psb_err_alloc_dealloc_
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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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prec%iprcparm(:) = 0
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prec%iprcparm(psb_p_type_) = psb_bjac_
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prec%iprcparm(psb_f_type_) = psb_f_ilu_n_
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prec%iprcparm(psb_ilu_fill_in_) = 0
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_s_bjac_precinit
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subroutine psb_s_bjac_precbld(a,desc_a,prec,info,upd,mold,afmt)
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use psb_base_mod
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Implicit None
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type(psb_sspmat_type), intent(in), target :: a
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type(psb_desc_type), intent(in), target :: desc_a
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class(psb_s_bjac_prec_type),intent(inout) :: prec
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integer, intent(out) :: info
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character, intent(in), optional :: upd
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character(len=*), intent(in), optional :: afmt
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class(psb_s_base_sparse_mat), intent(in), optional :: mold
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! .. Local Scalars ..
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integer :: i, m
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integer :: int_err(5)
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character :: trans, unitd
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type(psb_s_csr_sparse_mat), allocatable :: lf, uf
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integer nztota, err_act, n_row, nrow_a,n_col, nhalo
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integer :: ictxt,np,me
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character(len=20) :: name='s_bjac_precbld'
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character(len=20) :: ch_err
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if(psb_get_errstatus() /= 0) return
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info = psb_success_
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call psb_erractionsave(err_act)
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ictxt=desc_a%get_context()
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call psb_info(ictxt, me, np)
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m = a%get_nrows()
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if (m < 0) then
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info = psb_err_iarg_neg_
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int_err(1) = 1
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int_err(2) = m
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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endif
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trans = 'N'
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unitd = 'U'
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select case(prec%iprcparm(psb_f_type_))
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case(psb_f_ilu_n_)
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if (allocated(prec%av)) then
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if (size(prec%av) < psb_bp_ilu_avsz) then
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do i=1,size(prec%av)
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call prec%av(i)%free()
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enddo
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deallocate(prec%av,stat=info)
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endif
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end if
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if (.not.allocated(prec%av)) then
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allocate(prec%av(psb_max_avsz),stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_alloc_dealloc_,name)
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goto 9999
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end if
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endif
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nrow_a = desc_a%get_local_rows()
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nztota = a%get_nzeros()
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n_col = desc_a%get_local_cols()
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nhalo = n_col-nrow_a
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n_row = nrow_a
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allocate(lf,uf,stat=info)
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if (info == psb_success_) call lf%allocate(n_row,n_row,nztota)
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if (info == psb_success_) call uf%allocate(n_row,n_row,nztota)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_sp_all'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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if (allocated(prec%d)) then
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if (size(prec%d) < n_row) then
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deallocate(prec%d)
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endif
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endif
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if (.not.allocated(prec%d)) then
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allocate(prec%d(n_row),stat=info)
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if (info /= psb_success_) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
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goto 9999
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end if
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endif
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! This is where we have no renumbering, thus no need
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call psb_ilu_fct(a,lf,uf,prec%d,info)
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if(info == psb_success_) then
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call prec%av(psb_l_pr_)%mv_from(lf)
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call prec%av(psb_u_pr_)%mv_from(uf)
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call prec%av(psb_l_pr_)%set_asb()
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call prec%av(psb_u_pr_)%set_asb()
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call prec%av(psb_l_pr_)%trim()
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call prec%av(psb_u_pr_)%trim()
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else
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info=psb_err_from_subroutine_
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ch_err='psb_ilu_fct'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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case(psb_f_none_)
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info=psb_err_from_subroutine_
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ch_err='Inconsistent prec psb_f_none_'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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case default
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info=psb_err_from_subroutine_
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ch_err='Unknown psb_f_type_'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end select
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if (present(mold)) then
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call prec%av(psb_l_pr_)%cscnv(info,mold=mold)
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call prec%av(psb_u_pr_)%cscnv(info,mold=mold)
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else if (present(afmt)) then
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call prec%av(psb_l_pr_)%cscnv(info,type=afmt)
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call prec%av(psb_u_pr_)%cscnv(info,type=afmt)
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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 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_s_bjac_precbld
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subroutine psb_s_bjac_precseti(prec,what,val,info)
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use psb_base_mod
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Implicit None
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class(psb_s_bjac_prec_type),intent(inout) :: prec
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integer, intent(in) :: what
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integer, intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act, nrow
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character(len=20) :: name='s_bjac_precset'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (.not.allocated(prec%iprcparm)) then
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info = 1124
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call psb_errpush(info,name,a_err="preconditioner")
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goto 9999
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end if
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select case(what)
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case (psb_f_type_)
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if (prec%iprcparm(psb_p_type_) /= psb_bjac_) then
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write(psb_err_unit,*) 'WHAT is invalid for current preconditioner ',prec%iprcparm(psb_p_type_),&
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& 'ignoring user specification'
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return
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endif
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prec%iprcparm(psb_f_type_) = val
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case (psb_ilu_fill_in_)
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if ((prec%iprcparm(psb_p_type_) /= psb_bjac_).or.(prec%iprcparm(psb_f_type_) /= psb_f_ilu_n_)) then
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write(psb_err_unit,*) 'WHAT is invalid for current preconditioner ',prec%iprcparm(psb_p_type_),&
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& 'ignoring user specification'
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return
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endif
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prec%iprcparm(psb_ilu_fill_in_) = val
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case default
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write(psb_err_unit,*) 'WHAT is invalid, ignoring user specification'
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end select
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_s_bjac_precseti
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subroutine psb_s_bjac_precsetr(prec,what,val,info)
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use psb_base_mod
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Implicit None
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class(psb_s_bjac_prec_type),intent(inout) :: prec
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integer, intent(in) :: what
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real(psb_spk_), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act, nrow
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character(len=20) :: name='s_bjac_precset'
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call psb_erractionsave(err_act)
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info = psb_success_
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_s_bjac_precsetr
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subroutine psb_s_bjac_precsetc(prec,what,val,info)
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use psb_base_mod
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Implicit None
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class(psb_s_bjac_prec_type),intent(inout) :: prec
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integer, intent(in) :: what
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character(len=*), intent(in) :: val
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integer, intent(out) :: info
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Integer :: err_act, nrow
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character(len=20) :: name='s_bjac_precset'
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call psb_erractionsave(err_act)
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info = psb_success_
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error()
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return
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end if
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return
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end subroutine psb_s_bjac_precsetc
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subroutine psb_s_bjac_precfree(prec,info)
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use psb_base_mod
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Implicit None
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class(psb_s_bjac_prec_type), intent(inout) :: prec
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integer, intent(out) :: info
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Integer :: err_act, i
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character(len=20) :: name='s_bjac_precfree'
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call psb_erractionsave(err_act)
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info = psb_success_
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if (allocated(prec%av)) then
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do i=1,size(prec%av)
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call prec%av(i)%free()
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enddo
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deallocate(prec%av,stat=info)
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end if
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if (allocated(prec%d)) then
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deallocate(prec%d,stat=info)
|
|
end if
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine psb_s_bjac_precfree
|
|
|
|
|
|
subroutine psb_s_bjac_precdescr(prec,iout)
|
|
|
|
use psb_base_mod
|
|
Implicit None
|
|
|
|
class(psb_s_bjac_prec_type), intent(in) :: prec
|
|
integer, intent(in), optional :: iout
|
|
|
|
Integer :: err_act, nrow, info
|
|
character(len=20) :: name='s_bjac_precdescr'
|
|
integer :: iout_
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_success_
|
|
|
|
if (present(iout)) then
|
|
iout_ = iout
|
|
else
|
|
iout_ = 6
|
|
end if
|
|
|
|
if (.not.allocated(prec%iprcparm)) then
|
|
info = 1124
|
|
call psb_errpush(info,name,a_err="preconditioner")
|
|
goto 9999
|
|
end if
|
|
|
|
write(iout_,*) 'Block Jacobi with: ',&
|
|
& fact_names(prec%iprcparm(psb_f_type_))
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_success_
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error()
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine psb_s_bjac_precdescr
|
|
|
|
function psb_s_bjac_sizeof(prec) result(val)
|
|
use psb_base_mod
|
|
class(psb_s_bjac_prec_type), intent(in) :: prec
|
|
integer(psb_long_int_k_) :: val
|
|
|
|
val = 0
|
|
if (allocated(prec%d)) then
|
|
val = val + psb_sizeof_sp * size(prec%d)
|
|
endif
|
|
if (allocated(prec%av)) then
|
|
val = val + psb_sizeof(prec%av(psb_l_pr_))
|
|
val = val + psb_sizeof(prec%av(psb_u_pr_))
|
|
endif
|
|
return
|
|
end function psb_s_bjac_sizeof
|
|
|
|
end module psb_s_bjacprec
|