!!$
!!$ Parallel Sparse BLAS v2.0
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$
!!$ Redistribution and use in source and binary forms, with or without
!!$ modification, are permitted provided that the following conditions
!!$ are met:
!!$ 1. Redistributions of source code must retain the above copyright
!!$ notice, this list of conditions and the following disclaimer.
!!$ 2. Redistributions in binary form must reproduce the above copyright
!!$ notice, this list of conditions, and the following disclaimer in the
!!$ documentation and/or other materials provided with the distribution.
!!$ 3. The name of the PSBLAS group or the names of its contributors may
!!$ not be used to endorse or promote products derived from this
!!$ software without specific written permission.
!!$
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!!$ POSSIBILITY OF SUCH DAMAGE.
!!$
!!$
subroutine psb_dprecbld(a,desc_a,p,info,upd)
use psb_base_mod
use psb_prec_type
Implicit None
type(psb_dspmat_type), target :: a
type(psb_desc_type), intent(in), target :: desc_a
type(psb_dprec_type),intent(inout) :: p
integer, intent(out) :: info
character, intent(in), optional :: upd
interface psb_diagsc_bld
subroutine psb_ddiagsc_bld(a,desc_data,p,upd,info)
use psb_base_mod
use psb_prec_type
integer, intent(out) :: info
type(psb_dspmat_type), intent(in), target :: a
type(psb_desc_type),intent(in) :: desc_data
type(psb_dprec_type), intent(inout) :: p
character, intent(in) :: upd
end subroutine psb_ddiagsc_bld
end interface
interface psb_ilu_bld
subroutine psb_dilu_bld(a,desc_data,p,upd,info)
use psb_base_mod
use psb_prec_type
integer, intent(out) :: info
type(psb_dspmat_type), intent(in), target :: a
type(psb_desc_type),intent(in) :: desc_data
type(psb_dprec_type), intent(inout) :: p
character, intent(in) :: upd
end subroutine psb_dilu_bld
end interface
! Local scalars
Integer :: err, nnzero, n_row, n_col,I,j,k,ictxt,&
& me,mycol,np,npcol,mglob,lw, mtype, nrg, nzg, err_act
real(kind(1.d0)) :: temp, real_err(5)
real(kind(1.d0)),pointer :: gd(:), work(:)
integer :: int_err(5)
character :: iupd
logical, parameter :: debug=.false.
integer,parameter :: iroot=0,iout=60,ilout=40
character(len=20) :: name, ch_err
if(psb_get_errstatus().ne.0) return
info=0
err=0
call psb_erractionsave(err_act)
name = 'psb_precbld'
if (debug) write(0,*) 'Entering precbld',P%prec,desc_a%matrix_data(:)
info = 0
int_err(1) = 0
ictxt = psb_cd_get_context(desc_a)
if (debug) write(0,*) 'Preconditioner psb_info'
call psb_info(ictxt, me, np)
if (present(upd)) then
if (debug) write(0,*) 'UPD ', upd
if ((upd.eq.'F').or.(upd.eq.'T')) then
iupd=upd
else
iupd='F'
endif
else
iupd='F'
endif
n_row = psb_cd_get_local_rows(desc_a)
n_col = psb_cd_get_local_cols(desc_a)
mglob = psb_cd_get_global_rows(desc_a)
!
! Should add check to ensure all procs have the same...
!
! ALso should define symbolic names for the preconditioners.
!
call psb_check_def(p%iprcparm(p_type_),'base_prec',&
& diagsc_,is_legal_prec)
call psb_nullify_desc(p%desc_data)
select case(p%iprcparm(p_type_))
case (noprec_)
! Do nothing.
call psb_cdcpy(desc_a,p%desc_data,info)
if(info /= 0) then
info=4010
ch_err='psb_cdcpy'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
case (diagsc_)
call psb_diagsc_bld(a,desc_a,p,iupd,info)
if(debug) write(0,*)me,': out of psb_diagsc_bld'
if(info /= 0) then
info=4010
ch_err='psb_diagsc_bld'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
case (bja_)
call psb_check_def(p%iprcparm(iren_),'renumbering',&
& renum_none_,is_legal_renum)
call psb_check_def(p%iprcparm(f_type_),'fact',&
& f_ilu_n_,is_legal_ml_fact)
if (debug) write(0,*)me, ': Calling PSB_ILU_BLD'
if (debug) call psb_barrier(ictxt)
call psb_cdcpy(desc_a,p%desc_data,info)
if(info /= 0) then
info=4010
ch_err='psb_cdcpy'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
allocate(p%av(max_avsz),stat=info)
if(info /= 0) then
info=4000
call psb_errpush(info,name)
goto 9999
end if
select case(p%iprcparm(f_type_))
case(f_ilu_n_,f_ilu_e_)
call psb_ilu_bld(a,desc_a,p,iupd,info)
if(debug) write(0,*)me,': out of psb_ilu_bld',info
if (debug) call psb_barrier(ictxt)
if(info /= 0) then
info=4010
ch_err='psb_ilu_bld'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
case(f_none_)
write(0,*) 'Fact=None in BASEPRC_BLD Bja/ASM??'
info=4010
ch_err='Inconsistent prec f_none_'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
case default
write(0,*) 'Unknown factor type in baseprc_bld bja/asm: ',&
&p%iprcparm(f_type_)
info=4010
ch_err='Unknown f_type_'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end select
case default
info=4010
ch_err='Unknown p_type_'
call psb_errpush(info,name,a_err=ch_err)
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
end subroutine psb_dprecbld