! ! ! AMG4PSBLAS version 1.0 ! Algebraic Multigrid Package ! based on PSBLAS (Parallel Sparse BLAS version 3.5) ! ! (C) Copyright 2020 ! ! Salvatore Filippone ! Pasqua D'Ambra ! Fabio Durastante ! ! 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 AMG4PSBLAS 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 AMG4PSBLAS 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 amg_d_as_smoother_bld(a,desc_a,sm,info,amold,vmold,imold) use psb_base_mod use amg_d_as_smoother, amg_protect_nam => amg_d_as_smoother_bld Implicit None ! Arguments type(psb_dspmat_type), intent(in), target :: a Type(psb_desc_type), Intent(inout) :: desc_a class(amg_d_as_smoother_type), intent(inout) :: sm integer(psb_ipk_), intent(out) :: info class(psb_d_base_sparse_mat), intent(in), optional :: amold class(psb_d_base_vect_type), intent(in), optional :: vmold class(psb_i_base_vect_type), intent(in), optional :: imold ! Local variables type(psb_dspmat_type) :: blck, atmp integer(psb_ipk_) :: n_row,n_col, nrow_a, nhalo, novr, data_ real(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:) integer(psb_ipk_) :: ictxt,np,me,i, err_act, debug_unit, debug_level character(len=20) :: name='d_as_smoother_bld', ch_err info=psb_success_ call psb_erractionsave(err_act) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ictxt = desc_a%get_context() call psb_info(ictxt, me, np) if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),' start' novr = sm%novr if (novr < 0) then info=psb_err_invalid_ovr_num_ call psb_errpush(info,name,& & i_err=(/novr,izero,izero,izero,izero,izero/)) goto 9999 endif if ((novr == 0).or.(np == 1)) then call psb_cdcpy(desc_a,sm%desc_data,info) If(debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & ' done cdcpy' if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_cdcpy' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & 'Early return: P>=3 N_OVR=0' call blck%csall(izero,izero,info,ione) else ! ! Build the auxiliary descriptor desc_p%matrix_data(psb_n_row_). ! This is done by psb_cdbldext (interface to psb_cdovr), which is ! independent of CSR, and has been placed in the tools directory ! of PSBLAS, instead of the mlprec directory of MLD2P4, because it ! might be used independently of the AS preconditioner, to build ! a descriptor for an extended stencil in a PDE solver. ! call psb_cdbldext(a,desc_a,novr,sm%desc_data,info,extype=psb_ovt_asov_) if(debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & ' From cdbldext _:',sm%desc_data%get_local_rows(),& & sm%desc_data%get_local_cols() if (info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_cdbldext' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & 'Before sphalo ' ! ! Retrieve the remote sparse matrix rows required for the AS extended ! matrix data_ = psb_comm_ext_ Call psb_sphalo(a,sm%desc_data,blck,info,data=data_,rowscale=.true.) if (info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='psb_sphalo' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug_level >=psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & 'After psb_sphalo ',& & blck%get_nrows(), blck%get_nzeros() End if if (info == psb_success_) & & call sm%sv%build(a,sm%desc_data,info,& & blck,amold=amold,vmold=vmold) nrow_a = a%get_nrows() n_row = sm%desc_data%get_local_rows() n_col = sm%desc_data%get_local_cols() if (info == psb_success_) call a%csclip(sm%nd,info,& & jmin=nrow_a+1,rscale=.false.,cscale=.false.) if (info == psb_success_) call blck%csclip(atmp,info,& & jmin=nrow_a+1,rscale=.false.,cscale=.false.) if (info == psb_success_) call psb_rwextd(n_row,sm%nd,info,b=atmp) if (info == psb_success_) then if (present(amold)) then call sm%nd%cscnv(info,& & mold=amold,dupl=psb_dupl_add_) else call sm%nd%cscnv(info,& & type='csr',dupl=psb_dupl_add_) end if end if if (info == psb_success_) then if (present(imold)) then call sm%desc_data%cnv(imold) end if end if if (info /= psb_success_) then call psb_errpush(psb_err_from_subroutine_,name,a_err='clip & psb_spcnv csr 4') goto 9999 end if sm%nd_nnz_tot = sm%nd%get_nzeros() call psb_sum(ictxt,sm%nd_nnz_tot) if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),' end' call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine amg_d_as_smoother_bld