!!$ !!$ !!$ MD2P4 !!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS !!$ for !!$ Parallel Sparse BLAS v2.0 !!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari University of Rome Tor Vergata !!$ Daniela di Serafino Second University of Naples !!$ Pasqua D'Ambra ICAR-CNR !!$ !!$ 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 MD2P4 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 MD2P4 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. !!$ !!$ !***************************************************************************** !* * !* This is where the action takes place. * !* ASMATBLD does the setup: building the prec descriptor plus retrieving * !* matrix rows if needed * !* * !* * !* * !* * !* some open code does the renumbering * !* * !* * !* * !* * !***************************************************************************** subroutine mld_zilu_bld(a,desc_a,p,upd,info,blck) use psb_base_mod use mld_prec_mod, mld_protect_name => mld_zilu_bld implicit none ! ! .. Scalar Arguments .. integer, intent(out) :: info ! .. array Arguments .. type(psb_zspmat_type), intent(in), target :: a type(mld_zbaseprc_type), intent(inout) :: p type(psb_desc_type), intent(in) :: desc_a character, intent(in) :: upd type(psb_zspmat_type), intent(in), optional :: blck ! .. Local Scalars .. integer :: i, j, jj, k, kk, m integer :: int_err(5) character :: trans, unitd real(kind(1.d0)) :: t1,t2,t3,t4,t5,t6, t7, t8 logical, parameter :: debugprt=.false., debug=.false., aggr_dump=.false. integer nztota, nztotb, nztmp, nzl, nnr, ir, err_act,& & n_row, nrow_a, ind, iind, i1,i2,ia integer :: ictxt,np,me character(len=20) :: name, ch_err if(psb_get_errstatus().ne.0) return info=0 name='mld_zilu_bld' call psb_erractionsave(err_act) ictxt=psb_cd_get_context(desc_a) call psb_info(ictxt, me, np) trans = 'N' unitd = 'U' if (allocated(p%av)) then if (size(p%av) < mld_bp_ilu_avsz_) then do i=1,size(p%av) call psb_sp_free(p%av(i),info) if (info /= 0) then ! Actually, we don't care here about this. ! Just let it go. ! return end if enddo deallocate(p%av,stat=info) endif end if if (.not.allocated(p%av)) then allocate(p%av(mld_max_avsz_),stat=info) if (info /= 0) then call psb_errpush(4000,name) goto 9999 end if endif !!$ call psb_csprt(50+me,a,head='% (A)') nrow_a = psb_cd_get_local_rows(desc_a) nztota = psb_sp_get_nnzeros(a) if (present(blck)) then nztota = nztota + psb_sp_get_nnzeros(blck) end if if (debug) write(0,*)me,': out get_nnzeros',nztota,a%m,a%k if (debug) call psb_barrier(ictxt) n_row = p%desc_data%matrix_data(psb_n_row_) p%av(mld_l_pr_)%m = n_row p%av(mld_l_pr_)%k = n_row p%av(mld_u_pr_)%m = n_row p%av(mld_u_pr_)%k = n_row call psb_sp_all(n_row,n_row,p%av(mld_l_pr_),nztota,info) if (info == 0) call psb_sp_all(n_row,n_row,p%av(mld_u_pr_),nztota,info) if(info/=0) then info=4010 ch_err='psb_sp_all' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (allocated(p%d)) then if (size(p%d) < n_row) then deallocate(p%d) endif endif if (.not.allocated(p%d)) then allocate(p%d(n_row),stat=info) if (info /= 0) then call psb_errpush(4010,name,a_err='Allocate') goto 9999 end if endif select case(p%iprcparm(mld_sub_solve_)) case(mld_ilu_n_,mld_milu_n_,mld_ilu_t_) ! ! Need to decide what to do with ILU(T). ! Should we pack the functionality together with ILU(K)? ! Maybe for mental sanity, a separate routine would be better. ! ! Decide what to do with MILU(K) ! ! Ok, factor the matrix. ! t5 = psb_wtime() select case(p%iprcparm(mld_sub_fill_in_)) case(:-1) ! This is an error. call psb_errpush(30,name,i_err=(/3,p%iprcparm(mld_sub_fill_in_),0,0,0/)) goto 9999 case(0) call mld_ilu_fct(p%iprcparm(mld_sub_solve_),a,p%av(mld_l_pr_),p%av(mld_u_pr_),& & p%d,info,blck=blck) case(1:) call mld_iluk_fct(p%iprcparm(mld_sub_fill_in_),p%iprcparm(mld_sub_solve_),& & a,p%av(mld_l_pr_),p%av(mld_u_pr_),p%d,info,blck=blck) end select case default ! If we end up here, something was wrong up in the call chain. call psb_errpush(4000,name) goto 9999 end select if(info/=0) then info=4010 ch_err='mld_ilu_fct' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debugprt) then ! ! Print out the factors on file. ! open(80+me) call psb_csprt(80+me,p%av(mld_l_pr_),head='% Local L factor') write(80+me,*) '% Diagonal: ',p%av(mld_l_pr_)%m do i=1,p%av(mld_l_pr_)%m write(80+me,*) i,i,p%d(i) enddo call psb_csprt(80+me,p%av(mld_u_pr_),head='% Local U factor') close(80+me) endif !!$ call psb_csprt(60+me,a,head='% (A)') ! ierr = MPE_Log_event( ifcte, 0, "st SIMPLE" ) t6 = psb_wtime() ! ! write(0,'(i3,1x,a,3(1x,g18.9))') me,'renum/factor time',t3-t2,t6-t5 ! if (me==0) write(0,'(a,3(1x,g18.9))') 'renum/factor time',t3-t2,t6-t5 if (psb_sp_getifld(psb_upd_,p%av(mld_u_pr_),info) /= psb_upd_perm_) then call psb_sp_trim(p%av(mld_u_pr_),info) endif if (psb_sp_getifld(psb_upd_,p%av(mld_l_pr_),info) /= psb_upd_perm_) then call psb_sp_trim(p%av(mld_l_pr_),info) endif if (debug) write(0,*) me,'End of ilu_bld' 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 mld_zilu_bld