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175 lines
5.4 KiB
Fortran
175 lines
5.4 KiB
Fortran
!!$
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!!$
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!!$ MD2P4
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!!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS
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!!$ for
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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!!$ Daniela di Serafino Second University of Naples
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!!$ Pasqua D'Ambra ICAR-CNR
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the MD2P4 group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MD2P4 GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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subroutine mld_zbaseprc_bld(a,desc_a,p,info,upd)
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use psb_base_mod
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use psb_prec_mod, mld_protect_name => mld_zbaseprc_bld
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Implicit None
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type(psb_zspmat_type), target :: a
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type(psb_desc_type), intent(in), target :: desc_a
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type(psb_zbaseprc_type),intent(inout) :: p
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integer, intent(out) :: info
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character, intent(in), optional :: upd
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! Local scalars
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Integer :: err, nnzero, n_row, n_col,I,j,k,ictxt,&
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& me,mycol,np,npcol,mglob,lw, mtype, nrg, nzg, err_act
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real(kind(1.d0)) :: temp, real_err(5)
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real(kind(1.d0)),pointer :: gd(:), work(:)
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integer :: int_err(5)
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character :: iupd
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logical, parameter :: debug=.false.
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integer,parameter :: iroot=0,iout=60,ilout=40
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character(len=20) :: name, ch_err
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if(psb_get_errstatus().ne.0) return
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info=0
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err=0
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call psb_erractionsave(err_act)
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name = 'mld_zbaseprc_bld'
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if (debug) write(0,*) 'Entering baseprc_bld'
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info = 0
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int_err(1) = 0
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ictxt = psb_cd_get_context(desc_a)
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n_row = psb_cd_get_local_rows(desc_a)
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n_col = psb_cd_get_local_cols(desc_a)
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mglob = psb_cd_get_global_rows(desc_a)
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if (debug) write(0,*) 'Preconditioner Blacs_gridinfo'
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call psb_info(ictxt, me, np)
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if (present(upd)) then
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if (debug) write(0,*) 'UPD ', upd
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if ((UPD.eq.'F').or.(UPD.eq.'T')) then
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IUPD=UPD
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else
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IUPD='F'
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endif
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else
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IUPD='F'
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endif
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!
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! Should add check to ensure all procs have the same...
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!
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call psb_check_def(p%iprcparm(prec_type_),'base_prec',&
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& diag_,is_legal_base_prec)
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call psb_nullify_desc(p%desc_data)
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select case(p%iprcparm(prec_type_))
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case (noprec_)
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! Do nothing.
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call psb_cdcpy(desc_a,p%desc_data,info)
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if(info /= 0) then
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info=4010
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ch_err='psb_cdcpy'
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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 (diag_)
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call mld_diag_bld(a,desc_a,p,iupd,info)
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if(debug) write(0,*)me,': out of mld_diag_bld'
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if(info /= 0) then
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info=4010
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ch_err='mld_diag_bld'
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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 (bjac_,as_)
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call psb_check_def(p%iprcparm(n_ovr_),'overlap',&
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& 0,is_legal_n_ovr)
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call psb_check_def(p%iprcparm(sub_restr_),'restriction',&
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& psb_halo_,is_legal_restrict)
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call psb_check_def(p%iprcparm(sub_prol_),'prolongator',&
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& psb_none_,is_legal_prolong)
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call psb_check_def(p%iprcparm(sub_ren_),'renumbering',&
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& renum_none_,is_legal_renum)
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call psb_check_def(p%iprcparm(sub_solve_),'fact',&
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& ilu_n_,is_legal_ml_fact)
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if (p%iprcparm(sub_solve_)==sludist_) then
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p%iprcparm(n_ovr_) = 0
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p%iprcparm(smooth_sweeps_) = 1
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end if
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if (debug) write(0,*)me, ': Calling mld_bjac_bld'
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if (debug) call psb_barrier(ictxt)
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call mld_bjac_bld(a,desc_a,p,iupd,info)
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if(info /= 0) then
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info=4010
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call psb_errpush(info,name,a_err='mld_bjac_bld')
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goto 9999
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end if
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case default
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info=4010
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ch_err='Unknown prec_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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p%base_a => a
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p%base_desc => desc_a
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p%iprcparm(prec_status_) = prec_built
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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.eq.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 mld_zbaseprc_bld
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