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214 lines
7.5 KiB
Fortran
214 lines
7.5 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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!*****************************************************************************
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!* *
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!* This is where the action takes place. *
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!* ASMATBLD does the setup: building the prec descriptor plus retrieving *
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!* matrix rows if needed *
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!* *
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!* *
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!* *
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!* *
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!* some open code does the renumbering *
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!* *
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!* *
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!* *
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!* *
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!*****************************************************************************
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subroutine psb_dilu_bld(a,desc_a,p,upd,info,blck)
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use psb_base_mod
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use psb_prec_mod, mld_protect_name => psb_dilu_bld
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implicit none
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!
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! .. Scalar Arguments ..
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integer, intent(out) :: info
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! .. array Arguments ..
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type(psb_dspmat_type), intent(in), target :: a
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type(psb_dbaseprc_type), intent(inout) :: p
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type(psb_desc_type), intent(in) :: desc_a
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character, intent(in) :: upd
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type(psb_dspmat_type), intent(in), optional :: blck
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! .. Local Scalars ..
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integer :: i, j, jj, k, kk, m
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integer :: int_err(5)
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character :: trans, unitd
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real(kind(1.d0)) :: t1,t2,t3,t4,t5,t6, t7, t8
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logical, parameter :: debugprt=.false., debug=.false., aggr_dump=.false.
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integer nztota, nztotb, nztmp, nzl, nnr, ir, err_act,&
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& n_row, nrow_a, ind, iind, i1,i2,ia
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integer :: ictxt,np,me
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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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name='psb_dilu_bld'
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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trans = 'N'
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unitd = 'U'
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if (allocated(p%av)) then
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if (size(p%av) < bp_ilu_avsz) then
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do i=1,size(p%av)
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call psb_sp_free(p%av(i),info)
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if (info /= 0) then
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! Actually, we don't care here about this.
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! Just let it go.
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! return
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end if
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enddo
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deallocate(p%av,stat=info)
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endif
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end if
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if (.not.allocated(p%av)) then
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allocate(p%av(max_avsz),stat=info)
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if (info /= 0) then
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call psb_errpush(4000,name)
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goto 9999
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end if
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endif
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!!$ call psb_csprt(50+me,a,head='% (A)')
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nrow_a = psb_cd_get_local_rows(desc_a)
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nztota = psb_sp_get_nnzeros(a)
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if (present(blck)) then
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nztota = nztota + psb_sp_get_nnzeros(blck)
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end if
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if (debug) write(0,*)me,': out get_nnzeros',nztota,a%m,a%k
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if (debug) call psb_barrier(ictxt)
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n_row = p%desc_data%matrix_data(psb_n_row_)
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p%av(l_pr_)%m = n_row
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p%av(l_pr_)%k = n_row
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p%av(u_pr_)%m = n_row
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p%av(u_pr_)%k = n_row
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call psb_sp_all(n_row,n_row,p%av(l_pr_),nztota,info)
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if (info == 0) call psb_sp_all(n_row,n_row,p%av(u_pr_),nztota,info)
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if(info/=0) then
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info=4010
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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(p%d)) then
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if (size(p%d) < n_row) then
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deallocate(p%d)
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endif
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endif
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if (.not.allocated(p%d)) then
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allocate(p%d(n_row),stat=info)
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if (info /= 0) then
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call psb_errpush(4010,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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!
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! Ok, factor the matrix.
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!
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t5 = psb_wtime()
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call psb_ilu_fct(a,p%av(l_pr_),p%av(u_pr_),p%d,info,blck=blck)
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if(info/=0) then
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info=4010
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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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if (debugprt) then
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!
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! Print out the factors on file.
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!
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open(80+me)
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call psb_csprt(80+me,p%av(l_pr_),head='% Local L factor')
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write(80+me,*) '% Diagonal: ',p%av(l_pr_)%m
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do i=1,p%av(l_pr_)%m
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write(80+me,*) i,i,p%d(i)
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enddo
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call psb_csprt(80+me,p%av(u_pr_),head='% Local U factor')
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close(80+me)
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endif
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!!$ call psb_csprt(60+me,a,head='% (A)')
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! ierr = MPE_Log_event( ifcte, 0, "st SIMPLE" )
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t6 = psb_wtime()
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!
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! write(0,'(i3,1x,a,3(1x,g18.9))') me,'renum/factor time',t3-t2,t6-t5
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! if (me==0) write(0,'(a,3(1x,g18.9))') 'renum/factor time',t3-t2,t6-t5
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if (psb_sp_getifld(psb_upd_,p%av(u_pr_),info) /= psb_upd_perm_) then
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call psb_sp_trimsize(p%av(u_pr_),i1,i2,ia,info)
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if (info == 0) call psb_sp_reall(p%av(u_pr_),i1,i2,ia,info)
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endif
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if (psb_sp_getifld(psb_upd_,p%av(l_pr_),info) /= psb_upd_perm_) then
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call psb_sp_trimsize(p%av(l_pr_),i1,i2,ia,info)
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if (info == 0) call psb_sp_reall(p%av(l_pr_),i1,i2,ia,info)
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endif
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if (debug) write(0,*) me,'End of ilu_bld'
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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 psb_dilu_bld
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