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psblas3/prec/impl/psb_c_bjacprec_impl.f90

605 lines
17 KiB
Fortran

subroutine psb_c_bjac_dump(prec,info,prefix,head)
use psb_base_mod
use psb_c_bjacprec, psb_protect_name => psb_c_bjac_dump
implicit none
class(psb_c_bjac_prec_type), intent(in) :: prec
integer(psb_ipk_), intent(out) :: info
character(len=*), intent(in), optional :: prefix,head
integer(psb_ipk_) :: i, j, il1, iln, lname, lev
integer(psb_ipk_) :: ictxt,iam, np
character(len=80) :: prefix_
character(len=120) :: fname ! len should be at least 20 more than
! len of prefix_
info = 0
ictxt = prec%get_ctxt()
call psb_info(ictxt,iam,np)
if (present(prefix)) then
prefix_ = trim(prefix(1:min(len(prefix),len(prefix_))))
else
prefix_ = "dump_fact_c"
end if
lname = len_trim(prefix_)
fname = trim(prefix_)
write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam
lname = lname + 5
write(fname(lname+1:),'(a)')'_lower.mtx'
if (prec%av(psb_l_pr_)%is_asb()) &
& call prec%av(psb_l_pr_)%print(fname,head=head)
write(fname(lname+1:),'(a,a)')'_diag.mtx'
if (allocated(prec%dv)) &
& call psb_geprt(fname,prec%dv%v%v,head=head)
write(fname(lname+1:),'(a)')'_upper.mtx'
if (prec%av(psb_u_pr_)%is_asb()) &
& call prec%av(psb_u_pr_)%print(fname,head=head)
end subroutine psb_c_bjac_dump
subroutine psb_c_bjac_apply_vect(alpha,prec,x,beta,y,desc_data,info,trans,work)
use psb_base_mod
use psb_c_bjacprec, psb_protect_name => psb_c_bjac_apply_vect
implicit none
type(psb_desc_type),intent(in) :: desc_data
class(psb_c_bjac_prec_type), intent(inout) :: prec
complex(psb_spk_),intent(in) :: alpha,beta
type(psb_c_vect_type),intent(inout) :: x
type(psb_c_vect_type),intent(inout) :: y
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
complex(psb_spk_),intent(inout), optional, target :: work(:)
! Local variables
integer(psb_ipk_) :: n_row,n_col
complex(psb_spk_), pointer :: ww(:), aux(:)
type(psb_c_vect_type) :: wv, wv1
integer(psb_ipk_) :: ictxt,np,me, err_act, ierr(5)
integer(psb_ipk_) :: debug_level, debug_unit
character :: trans_
character(len=20) :: name='c_bjac_prec_apply'
character(len=20) :: ch_err
info = psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = desc_data%get_context()
call psb_info(ictxt, me, np)
trans_ = psb_toupper(trans)
select case(trans_)
case('N','T','C')
! Ok
case default
call psb_errpush(psb_err_iarg_invalid_i_,name)
goto 9999
end select
n_row = desc_data%get_local_rows()
n_col = desc_data%get_local_cols()
if (x%get_nrows() < n_row) then
info = 36; ierr(1) = 2; ierr(2) = n_row;
call psb_errpush(info,name,i_err=ierr)
goto 9999
end if
if (y%get_nrows() < n_row) then
info = 36; ierr(1) = 3; ierr(2) = n_row;
call psb_errpush(info,name,i_err=ierr)
goto 9999
end if
if (.not.allocated(prec%dv)) then
info = 1124
call psb_errpush(info,name,a_err="preconditioner: D")
goto 9999
end if
if (prec%dv%get_nrows() < n_row) then
info = 1124
call psb_errpush(info,name,a_err="preconditioner: D")
goto 9999
end if
if (n_col <= size(work)) then
ww => work(1:n_col)
if ((4*n_col+n_col) <= size(work)) then
aux => work(n_col+1:)
else
allocate(aux(4*n_col),stat=info)
endif
else
allocate(ww(n_col),aux(4*n_col),stat=info)
endif
if (info == psb_success_) allocate(wv%v,mold=x%v)
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
goto 9999
end if
call psb_geasb(wv,desc_data,info,mold=x%v,scratch=.true.)
call psb_geasb(wv1,desc_data,info,mold=x%v,scratch=.true.)
select case(prec%iprcparm(psb_f_type_))
case(psb_f_ilu_n_)
select case(trans_)
case('N')
call psb_spsm(cone,prec%av(psb_l_pr_),x,czero,wv,desc_data,info,&
& trans=trans_,scale='L',diag=prec%dv,choice=psb_none_,work=aux)
if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_u_pr_),wv,&
& beta,y,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_, work=aux)
case('T')
call psb_spsm(cone,prec%av(psb_u_pr_),x,czero,wv,desc_data,info,&
& trans=trans_,scale='L',diag=prec%dv,choice=psb_none_, work=aux)
if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_l_pr_),wv,&
& beta,y,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_,work=aux)
case('C')
call psb_spsm(cone,prec%av(psb_u_pr_),x,czero,wv,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_, work=aux)
call wv1%mlt(cone,prec%dv,wv,czero,info,conjgx=trans_)
if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_l_pr_),wv,&
& beta,y,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_,work=aux)
end select
if (info /= psb_success_) then
ch_err="psb_spsm"
goto 9999
end if
case default
info = psb_err_internal_error_
call psb_errpush(info,name,a_err='Invalid factorization')
goto 9999
end select
call psb_halo(y,desc_data,info,data=psb_comm_mov_)
call wv%free(info)
call wv1%free(info)
if (n_col <= size(work)) then
if ((4*n_col+n_col) <= size(work)) then
else
deallocate(aux)
endif
else
deallocate(ww,aux)
endif
call psb_erractionrestore(err_act)
return
9999 continue
call psb_errpush(info,name,i_err=ierr,a_err=ch_err)
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine psb_c_bjac_apply_vect
subroutine psb_c_bjac_apply(alpha,prec,x,beta,y,desc_data,info,trans,work)
use psb_base_mod
use psb_c_bjacprec, psb_protect_name => psb_c_bjac_apply
implicit none
type(psb_desc_type),intent(in) :: desc_data
class(psb_c_bjac_prec_type), intent(in) :: prec
complex(psb_spk_),intent(in) :: alpha,beta
complex(psb_spk_),intent(inout) :: x(:)
complex(psb_spk_),intent(inout) :: y(:)
integer(psb_ipk_), intent(out) :: info
character(len=1), optional :: trans
complex(psb_spk_),intent(inout), optional, target :: work(:)
! Local variables
integer(psb_ipk_) :: n_row,n_col
complex(psb_spk_), pointer :: ww(:), aux(:)
integer(psb_ipk_) :: ictxt,np,me, err_act, ierr(5)
integer(psb_ipk_) :: debug_level, debug_unit
character :: trans_
character(len=20) :: name='c_bjac_prec_apply'
character(len=20) :: ch_err
info = psb_success_
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = desc_data%get_context()
call psb_info(ictxt, me, np)
trans_ = psb_toupper(trans)
select case(trans_)
case('N','T','C')
! Ok
case default
call psb_errpush(psb_err_iarg_invalid_i_,name)
goto 9999
end select
n_row = desc_data%get_local_rows()
n_col = desc_data%get_local_cols()
if (size(x) < n_row) then
info = 36; ierr(1) = 2; ierr(2) = n_row;
call psb_errpush(info,name,i_err=ierr)
goto 9999
end if
if (size(y) < n_row) then
info = 36; ierr(1) = 3; ierr(2) = n_row;
call psb_errpush(info,name,i_err=ierr)
goto 9999
end if
if (.not.allocated(prec%dv)) then
info = 1124
call psb_errpush(info,name,a_err="preconditioner: D")
goto 9999
end if
if (prec%dv%get_nrows() < n_row) then
info = 1124
call psb_errpush(info,name,a_err="preconditioner: D")
goto 9999
end if
if (n_col <= size(work)) then
ww => work(1:n_col)
if ((4*n_col+n_col) <= size(work)) then
aux => work(n_col+1:)
else
allocate(aux(4*n_col),stat=info)
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
goto 9999
end if
endif
else
allocate(ww(n_col),aux(4*n_col),stat=info)
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
goto 9999
end if
endif
select case(prec%iprcparm(psb_f_type_))
case(psb_f_ilu_n_)
select case(trans_)
case('N')
call psb_spsm(cone,prec%av(psb_l_pr_),x,czero,ww,desc_data,info,&
& trans=trans_,scale='L',diag=prec%dv%v%v,choice=psb_none_,work=aux)
if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_u_pr_),ww,&
& beta,y,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_, work=aux)
case('T')
call psb_spsm(cone,prec%av(psb_u_pr_),x,czero,ww,desc_data,info,&
& trans=trans_,scale='L',diag=prec%dv%v%v,choice=psb_none_, work=aux)
if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_l_pr_),ww,&
& beta,y,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_,work=aux)
case('C')
call psb_spsm(cone,prec%av(psb_u_pr_),x,czero,ww,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_, work=aux)
ww(1:n_row) = ww(1:n_row)*conjg(prec%dv%v%v(1:n_row))
if(info == psb_success_) call psb_spsm(alpha,prec%av(psb_l_pr_),ww,&
& beta,y,desc_data,info,&
& trans=trans_,scale='U',choice=psb_none_,work=aux)
end select
if (info /= psb_success_) then
ch_err="psb_spsm"
goto 9999
end if
case default
info = psb_err_internal_error_
call psb_errpush(info,name,a_err='Invalid factorization')
goto 9999
end select
call psb_halo(y,desc_data,info,data=psb_comm_mov_)
if (n_col <= size(work)) then
if ((4*n_col+n_col) <= size(work)) then
else
deallocate(aux)
endif
else
deallocate(ww,aux)
endif
call psb_erractionrestore(err_act)
return
9999 continue
call psb_errpush(info,name,i_err=ierr,a_err=ch_err)
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine psb_c_bjac_apply
subroutine psb_c_bjac_precinit(prec,info)
use psb_base_mod
use psb_c_bjacprec, psb_protect_name => psb_c_bjac_precinit
Implicit None
class(psb_c_bjac_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act, nrow
character(len=20) :: name='c_bjac_precinit'
call psb_erractionsave(err_act)
info = psb_success_
call psb_realloc(psb_ifpsz,prec%iprcparm,info)
if (info /= psb_success_) then
info = psb_err_alloc_dealloc_
call psb_Errpush(info,name)
goto 9999
end if
prec%iprcparm(:) = 0
prec%iprcparm(psb_p_type_) = psb_bjac_
prec%iprcparm(psb_f_type_) = psb_f_ilu_n_
prec%iprcparm(psb_ilu_fill_in_) = 0
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_c_bjac_precinit
subroutine psb_c_bjac_precbld(a,desc_a,prec,info,upd,amold,afmt,vmold)
use psb_base_mod
use psb_prec_mod, only : psb_ilu_fct
use psb_c_bjacprec, psb_protect_name => psb_c_bjac_precbld
Implicit None
type(psb_cspmat_type), intent(in), target :: a
type(psb_desc_type), intent(in), target :: desc_a
class(psb_c_bjac_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: upd
character(len=*), intent(in), optional :: afmt
class(psb_c_base_sparse_mat), intent(in), optional :: amold
class(psb_c_base_vect_type), intent(in), optional :: vmold
! .. Local Scalars ..
integer(psb_ipk_) :: i, m
integer(psb_ipk_) :: ierr(5)
character :: trans, unitd
type(psb_c_csr_sparse_mat), allocatable :: lf, uf
complex(psb_spk_), allocatable :: dd(:)
integer(psb_ipk_) :: nztota, err_act, n_row, nrow_a,n_col, nhalo
integer(psb_ipk_) :: ictxt,np,me
character(len=20) :: name='c_bjac_precbld'
character(len=20) :: ch_err
if(psb_get_errstatus() /= 0) return
info = psb_success_
call psb_erractionsave(err_act)
ictxt=desc_a%get_context()
call psb_info(ictxt, me, np)
call prec%set_ctxt(ictxt)
m = a%get_nrows()
if (m < 0) then
info = psb_err_iarg_neg_
ierr(1) = 1; ierr(2) = m
call psb_errpush(info,name,i_err=ierr)
goto 9999
endif
trans = 'N'
unitd = 'U'
select case(prec%iprcparm(psb_f_type_))
case(psb_f_ilu_n_)
if (allocated(prec%av)) then
if (size(prec%av) < psb_bp_ilu_avsz) then
do i=1,size(prec%av)
call prec%av(i)%free()
enddo
deallocate(prec%av,stat=info)
endif
end if
if (.not.allocated(prec%av)) then
allocate(prec%av(psb_max_avsz),stat=info)
if (info /= psb_success_) then
call psb_errpush(psb_err_alloc_dealloc_,name)
goto 9999
end if
endif
nrow_a = desc_a%get_local_rows()
nztota = a%get_nzeros()
n_col = desc_a%get_local_cols()
nhalo = n_col-nrow_a
n_row = nrow_a
allocate(lf,uf,stat=info)
if (info == psb_success_) call lf%allocate(n_row,n_row,nztota)
if (info == psb_success_) call uf%allocate(n_row,n_row,nztota)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_sp_all'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
allocate(dd(n_row),stat=info)
if (info == psb_success_) then
allocate(prec%dv, stat=info)
if (info == 0) then
if (present(vmold)) then
allocate(prec%dv%v,mold=vmold,stat=info)
else
allocate(psb_c_base_vect_type :: prec%dv%v,stat=info)
end if
end if
end if
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
goto 9999
endif
! This is where we have no renumbering, thus no need
call psb_ilu_fct(a,lf,uf,dd,info)
if(info == psb_success_) then
call prec%av(psb_l_pr_)%mv_from(lf)
call prec%av(psb_u_pr_)%mv_from(uf)
call prec%av(psb_l_pr_)%set_asb()
call prec%av(psb_u_pr_)%set_asb()
call prec%av(psb_l_pr_)%trim()
call prec%av(psb_u_pr_)%trim()
call prec%dv%bld(dd)
! call move_alloc(dd,prec%d)
else
info=psb_err_from_subroutine_
ch_err='psb_ilu_fct'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
case(psb_f_none_)
info=psb_err_from_subroutine_
ch_err='Inconsistent prec psb_f_none_'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
case default
info=psb_err_from_subroutine_
ch_err='Unknown psb_f_type_'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end select
if (present(amold)) then
call prec%av(psb_l_pr_)%cscnv(info,mold=amold)
call prec%av(psb_u_pr_)%cscnv(info,mold=amold)
else if (present(afmt)) then
call prec%av(psb_l_pr_)%cscnv(info,type=afmt)
call prec%av(psb_u_pr_)%cscnv(info,type=afmt)
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_c_bjac_precbld
subroutine psb_c_bjac_precseti(prec,what,val,info)
use psb_base_mod
use psb_c_bjacprec, psb_protect_name => psb_c_bjac_precseti
Implicit None
class(psb_c_bjac_prec_type),intent(inout) :: prec
integer(psb_ipk_), intent(in) :: what
integer(psb_ipk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act, nrow
character(len=20) :: name='c_bjac_precset'
call psb_erractionsave(err_act)
info = psb_success_
if (.not.allocated(prec%iprcparm)) then
info = 1124
call psb_errpush(info,name,a_err="preconditioner")
goto 9999
end if
select case(what)
case (psb_f_type_)
if (prec%iprcparm(psb_p_type_) /= psb_bjac_) then
write(psb_err_unit,*) 'WHAT is invalid for current preconditioner ',&
& prec%iprcparm(psb_p_type_),&
& 'ignoring user specification'
return
endif
prec%iprcparm(psb_f_type_) = val
case (psb_ilu_fill_in_)
if ((prec%iprcparm(psb_p_type_) /= psb_bjac_).or.&
& (prec%iprcparm(psb_f_type_) /= psb_f_ilu_n_)) then
write(psb_err_unit,*) 'WHAT is invalid for current preconditioner ',&
& prec%iprcparm(psb_p_type_),&
& 'ignoring user specification'
return
endif
prec%iprcparm(psb_ilu_fill_in_) = val
case default
write(psb_err_unit,*) 'WHAT is invalid, ignoring user specification'
end select
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_c_bjac_precseti