! ! ! MLD2P4 version 2.1 ! MultiLevel Domain Decomposition Parallel Preconditioners Package ! based on PSBLAS (Parallel Sparse BLAS version 3.5) ! ! (C) Copyright 2008, 2010, 2012, 2015, 2017 , 2017 ! ! Salvatore Filippone Cranfield University ! Ambra Abdullahi Hassan University of Rome Tor Vergata ! Pasqua D'Ambra IAC-CNR, Naples, IT ! Daniela di Serafino University of Campania "L. Vanvitelli", Caserta, IT ! ! 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 MLD2P4 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 MLD2P4 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. ! ! ! File: mld_d_bcmatch_aggregator_tprol.f90 ! ! Subroutine: mld_d_bcmatch_aggregator_tprol ! Version: real ! ! subroutine mld_d_bcmatch_aggregator_build_tprol(ag,parms,a,desc_a,ilaggr,nlaggr,op_prol,info) use psb_base_mod use mld_d_prec_type use mld_d_bcmatch_aggregator_mod, mld_protect_name => mld_d_bcmatch_aggregator_build_tprol use mld_d_inner_mod use bcm_csr_type_mod use iso_c_binding implicit none class(mld_d_bcmatch_aggregator_type), target, intent(inout) :: ag type(mld_dml_parms), intent(inout) :: parms type(psb_dspmat_type), intent(in) :: a type(psb_desc_type), intent(in) :: desc_a integer(psb_ipk_), allocatable, intent(out) :: ilaggr(:),nlaggr(:) type(psb_dspmat_type), intent(out) :: op_prol integer(psb_ipk_), intent(out) :: info ! Local variables real(psb_dpk_), allocatable:: valaggr(:) type(psb_dspmat_type) :: a_tmp type(bcm_CSRMatrix) :: C, P integer(c_int) :: match_algorithm, n_sweeps, max_csize, max_nlevels character(len=20) :: name, ch_err integer(psb_mpk_) :: ictxt, np, me integer(psb_ipk_) :: err_act, ierr integer(psb_ipk_) :: debug_level, debug_unit integer(psb_ipk_) :: i, j, k, nr, nc, isz, num_pcols type(psb_d_csr_sparse_mat), target :: acsr integer(psb_ipk_), allocatable, target :: csr_ia(:), csr_ja(:) integer(psb_ipk_), allocatable :: aux(:) real(psb_dpk_), allocatable, target:: csr_val(:) interface function bootCMatch(C,match_alg,n_sweeps,max_nlevels,max_csize,w)bind(c,name='bootCMatch') result(P) use iso_c_binding use bcm_csr_type_mod implicit none type(bcm_CSRMatrix) :: C, P type(bcm_Vector) :: w integer(c_int) :: match_alg integer(c_int) :: n_sweeps integer(c_int) :: max_nlevels integer(c_int) :: max_csize end function bootCMatch end interface interface function mld_bootCMatch_if(C,match_alg,n_sweeps,max_nlevels,max_csize,& & w,isz,ilaggr,valaggr, num_cols) & & bind(c,name='mld_bootCMatch_if') result(iret) use iso_c_binding use bcm_csr_type_mod implicit none type(bcm_CSRMatrix) :: C, P type(bcm_Vector) :: w integer(c_int), value :: match_alg integer(c_int), value :: n_sweeps integer(c_int), value :: max_nlevels integer(c_int), value :: max_csize integer(c_int), value :: isz integer(c_int) :: num_cols integer(c_int) :: ilaggr(*) real(c_double) :: valaggr(*) integer(c_int) :: iret end function mld_bootCMatch_if end interface name='mld_d_bcmatch_aggregator_tprol' ictxt = desc_a%get_context() call psb_info(ictxt,me,np) if (psb_get_errstatus().ne.0) return call psb_erractionsave(err_act) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() info = psb_success_ call mld_check_def(parms%ml_cycle,'Multilevel cycle',& & mld_mult_ml_,is_legal_ml_cycle) call mld_check_def(parms%par_aggr_alg,'Aggregation',& & mld_dec_aggr_,is_legal_ml_par_aggr_alg) call mld_check_def(parms%aggr_ord,'Ordering',& & mld_aggr_ord_nat_,is_legal_ml_aggr_ord) call mld_check_def(parms%aggr_thresh,'Aggr_Thresh',dzero,is_legal_d_aggr_thrs) call a%csclip(b=a_tmp, info=info, jmax=a%get_nrows(), imax=a%get_nrows()) call a_tmp%mv_to(acsr) nr = a%get_nrows() if (psb_size(ag%w_tmp) < nr) call ag%bld_default_w(nr) !write(*,*) 'Build_tprol:',acsr%get_nrows(),acsr%get_ncols() C%num_rows = acsr%get_nrows() C%num_cols = acsr%get_ncols() C%num_nonzeros = acsr%get_nzeros() C%owns_data = 0 acsr%irp = acsr%irp - 1 acsr%ja = acsr%ja - 1 C%i = c_loc(acsr%irp) C%j = c_loc(acsr%ja) C%data = c_loc(acsr%val) isz = a%get_ncols() call psb_realloc(isz,ilaggr,info) if (info == psb_success_) call psb_realloc(isz,valaggr,info) if (info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_realloc' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if match_algorithm = ag%matching_alg n_sweeps = ag%n_sweeps max_csize = ag%max_csize max_nlevels = ag%max_nlevels info = mld_bootCMatch_if(C,match_algorithm,n_sweeps,max_nlevels,max_csize,& & ag%w_par, isz, ilaggr, valaggr, num_pcols) if (info /= psb_success_) then !!$ write(0,*) 'On return from bootCMatch_if:',info call psb_errpush(psb_err_from_subroutine_,name,a_err='mld_bootCMatch_if') goto 9999 end if !!$ write(0,*) 'On output from BootCMatch',nr,num_pcols,size(ilaggr),maxval(ilaggr),& !!$ & minval(ilaggr),minval(ilaggr(1:nr)),a%get_nrows(),a%get_ncols() ! Prepare vector W for next level, just in case call ag%bld_wnxt(ilaggr(1:nr),valaggr(1:nr),num_pcols) call psb_realloc(np,nlaggr,info) if (info /= psb_success_) then info=psb_err_alloc_request_ call psb_errpush(info,name,i_err=(/np,izero,izero,izero,izero/),& & a_err='integer') goto 9999 end if call acsr%free() nlaggr(:)=0 nlaggr(me+1) = num_pcols call psb_sum(ictxt,nlaggr(1:np)) call mld_d_bcmatch_map_to_tprol(desc_a,ilaggr,nlaggr,valaggr,op_prol,info) if (info /= psb_success_) then call psb_errpush(psb_err_from_subroutine_,name,a_err='mld_bcmatch_map_to_tprol') goto 9999 end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine mld_d_bcmatch_aggregator_build_tprol