! ! ! AMG4PSBLAS version 1.0 ! Algebraic Multigrid Package ! based on PSBLAS (Parallel Sparse BLAS version 3.7) ! ! (C) Copyright 2021 ! ! 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. ! ! ! File: amg_rap.F90 ! ! This routine computes the triple product : ! AC = R A P ! R is stored in Restr ! WARNINGS: ! 1. So far this has only been tested with R=P^T ! 2. Patterns and descriptors need to be consistent ! between initial build and application of this. ! subroutine amg_s_rap(a_csr,desc_a,nlaggr,parms,ac,& & coo_prol,desc_ac,coo_restr,info) use psb_base_mod use amg_s_inner_mod use amg_s_base_aggregator_mod, amg_protect_name => amg_s_rap implicit none ! Arguments type(psb_s_csr_sparse_mat), intent(inout) :: a_csr type(psb_desc_type), intent(inout) :: desc_a integer(psb_lpk_), intent(inout) :: nlaggr(:) type(amg_sml_parms), intent(inout) :: parms type(psb_s_coo_sparse_mat), intent(inout) :: coo_prol, coo_restr type(psb_desc_type), intent(inout) :: desc_ac type(psb_sspmat_type), intent(out) :: ac integer(psb_ipk_), intent(out) :: info ! Local variables integer(psb_ipk_) :: err_act type(psb_ctxt_type) :: ctxt integer(psb_ipk_) :: np, me, ndx character(len=40) :: name type(psb_ls_coo_sparse_mat) :: ac_coo, tmpcoo type(psb_s_csr_sparse_mat) :: acsr3, csr_prol, ac_csr, csr_restr integer(psb_ipk_) :: debug_level, debug_unit, naggr integer(psb_lpk_) :: nglob, ntaggr, naggrm1, naggrp1 integer(psb_ipk_) :: nrow, ncol, nrl, nzl, ip, nzt, i, k integer(psb_lpk_) :: nrsave, ncsave, nzsave, nza logical, parameter :: debug=.false. name='amg_rap' if(psb_get_errstatus().ne.0) return info=psb_success_ call psb_erractionsave(err_act) ctxt = desc_a%get_context() call psb_info(ctxt, me, np) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() nglob = desc_a%get_global_rows() nrow = desc_a%get_local_rows() ncol = desc_a%get_local_cols() naggr = nlaggr(me+1) ntaggr = sum(nlaggr) naggrm1 = sum(nlaggr(1:me)) naggrp1 = sum(nlaggr(1:me+1)) ! ! COO_PROL should arrive here with local numbering ! if (debug) write(0,*) me,' ',trim(name),' Size check on entry New: ',& & coo_prol%get_fmt(),coo_prol%get_nrows(),coo_prol%get_ncols(),coo_prol%get_nzeros(),& & nrow,ntaggr,naggr call coo_prol%cp_to_fmt(csr_prol,info) if (debug) write(0,*) me,trim(name),' Product AxPROL ',& & a_csr%get_nrows(),a_csr%get_ncols(), csr_prol%get_nrows(), & & desc_a%get_local_rows(),desc_a%get_local_cols(),& & desc_ac%get_local_rows(),desc_a%get_local_cols() if (debug) flush(0) call psb_par_spspmm(a_csr,desc_a,csr_prol,acsr3,desc_ac,info) if (debug) write(0,*) me,trim(name),' Done AxPROL ',& & acsr3%get_nrows(),acsr3%get_ncols(), acsr3%get_nzeros(),& & desc_ac%get_local_rows(),desc_ac%get_local_cols() ! ! Remember that RESTR must be built from PROL after halo extension, ! which is done above in psb_par_spspmm if (debug) write(0,*)me,' ',name,' No inp_restr, transposing prol ',& & csr_prol%get_nrows(),csr_prol%get_ncols(),csr_prol%get_nzeros() call csr_restr%cp_from_coo(coo_restr,info) if (info /= psb_success_) then call psb_errpush(psb_err_from_subroutine_,name,a_err='spcnv coo_restr') goto 9999 end if if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & 'starting sphalo/ rwxtd' if (debug) write(0,*) me,trim(name),' Product RESTRxAP ',& & csr_restr%get_nrows(),csr_restr%get_ncols(), & & desc_ac%get_local_rows(),desc_a%get_local_cols(),& & acsr3%get_nrows(),acsr3%get_ncols() call psb_par_spspmm(csr_restr,desc_a,acsr3,ac_csr,desc_ac,info) call acsr3%free() call ac_csr%set_nrows(desc_ac%get_local_rows()) call ac_csr%set_ncols(desc_ac%get_local_cols()) call ac%mv_from(ac_csr) call ac%set_asb() if (debug) write(0,*) me,' ',trim(name),' After mv_from',psb_get_errstatus() if (debug) write(0,*) me,' ',trim(name),' ',ac%get_fmt(),ac%get_nrows(),ac%get_ncols(),ac%get_nzeros(),naggr,ntaggr call coo_prol%set_ncols(desc_ac%get_local_cols()) if (debug) call check_coo(me,trim(name)//' Check 3 on coo_restr:',coo_restr) if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & 'Done rap ' call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine amg_s_rap