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1275 lines
45 KiB
Fortran
1275 lines
45 KiB
Fortran
3 years ago
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!
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!
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! AMG4PSBLAS version 1.0
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! Algebraic Multigrid Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.7)
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!
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! (C) Copyright 2021
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Fabio Durastante
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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 AMG4PSBLAS 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 AMG4PSBLAS 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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module amg_d_decmatch_mod
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use iso_c_binding
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use psb_base_cbind_mod
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interface new_Match_If
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function dnew_Match_If(nr, irp, ja, val, diag, w, mate) bind(c) result(res)
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use iso_c_binding
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import :: psb_c_ipk_, psb_c_lpk_, psb_c_mpk_, psb_c_epk_
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implicit none
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integer(psb_c_ipk_) :: res
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integer(psb_c_ipk_), value :: nr
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type(c_ptr), value :: irp, ja, mate
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type(c_ptr), value :: val, diag, w
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end function dnew_Match_If
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end interface new_Match_If
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!!$ interface amg_i_aggr_assign
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!!$ module procedure amg_i_daggr_assign
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!!$ end interface amg_i_aggr_assign
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!!$
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interface amg_build_decmatch
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module procedure amg_dbuild_decmatch
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end interface amg_build_decmatch
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!!$
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!!$ interface amg_build_ahat
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!!$ module procedure amg_dbuild_ahat
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!!$ end interface amg_build_ahat
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!!$
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!!$ interface amg_gtranspose
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!!$ module procedure amg_dgtranspose
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!!$ end interface amg_gtranspose
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!!$
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!!$ interface amg_htranspose
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!!$ module procedure amg_dhtranspose
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!!$ end interface amg_htranspose
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!!$
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!!$ interface amg_PMatchBox
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!!$ module procedure amg_dPMatchBox
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!!$ end interface amg_PMatchBox
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logical, parameter, private :: print_statistics=.false.
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contains
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subroutine amg_ddecmatch_build_prol(w,a,desc_a,ilaggr,nlaggr,prol,info,&
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& symmetrize,reproducible,display_inp, display_out, print_out)
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use psb_base_mod
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use psb_util_mod
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use iso_c_binding
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implicit none
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real(psb_dpk_), allocatable, intent(inout) :: w(:)
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type(psb_dspmat_type), intent(inout) :: a
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type(psb_desc_type) :: desc_a
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integer(psb_lpk_), allocatable, intent(out) :: ilaggr(:)
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integer(psb_lpk_), allocatable, intent(out) :: nlaggr(:)
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type(psb_ldspmat_type), intent(out) :: prol
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integer(psb_ipk_), intent(out) :: info
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logical, optional, intent(in) :: display_inp, display_out, reproducible
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logical, optional, intent(in) :: symmetrize, print_out
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!
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!
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type(psb_ctxt_type) :: ictxt
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integer(psb_ipk_) :: iam, np, iown
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integer(psb_ipk_) :: nr, nc, sweep, nzl, ncsave, nct, idx
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integer(psb_lpk_) :: i, k, kg, idxg, ntaggr, naggrm1, naggrp1, &
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& ip, nlpairs, nlsingl, nunmatched, lnr
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real(psb_dpk_) :: wk, widx, wmax, nrmagg
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real(psb_dpk_), allocatable :: wtemp(:)
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integer(psb_ipk_), allocatable :: mate(:)
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integer(psb_lpk_), allocatable :: ilv(:)
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integer(psb_ipk_), save :: cnt=1
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character(len=256) :: aname
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type(psb_ld_coo_sparse_mat) :: tmpcoo
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logical :: display_out_, print_out_, reproducible_
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logical, parameter :: dump=.false., debug=.false., dump_mate=.false., &
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& debug_ilaggr=.false., debug_sync=.false.
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integer(psb_ipk_), save :: idx_bldmtc=-1, idx_phase1=-1, idx_phase2=-1, idx_phase3=-1
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logical, parameter :: do_timings=.true.
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ictxt = desc_a%get_ctxt()
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call psb_info(ictxt,iam,np)
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if ((do_timings).and.(idx_phase1==-1)) &
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& idx_phase1 = psb_get_timer_idx("MBP_BLDP: phase1 ")
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if ((do_timings).and.(idx_bldmtc==-1)) &
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& idx_bldmtc = psb_get_timer_idx("MBP_BLDP: buil_matching")
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if ((do_timings).and.(idx_phase2==-1)) &
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& idx_phase2 = psb_get_timer_idx("MBP_BLDP: phase2 ")
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if ((do_timings).and.(idx_phase3==-1)) &
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& idx_phase3 = psb_get_timer_idx("MBP_BLDP: phase3 ")
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if (do_timings) call psb_tic(idx_phase1)
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if (present(display_out)) then
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display_out_ = display_out
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else
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display_out_ = .false.
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end if
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if (present(print_out)) then
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print_out_ = print_out
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else
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print_out_ = .false.
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end if
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if (present(reproducible)) then
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reproducible_ = reproducible
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else
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reproducible_ = .false.
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end if
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allocate(nlaggr(0:np-1),stat=info)
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if (info /= 0) then
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return
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end if
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nlaggr = 0
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ilv = [(i,i=1,desc_a%get_local_cols())]
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call desc_a%l2gip(ilv,info,owned=.false.)
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call psb_geall(ilaggr,desc_a,info)
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ilaggr = -1
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call psb_geasb(ilaggr,desc_a,info)
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nr = a%get_nrows()
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nc = a%get_ncols()
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if (size(w) < nc) then
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call psb_realloc(nc,w,info)
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end if
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call psb_halo(w,desc_a,info)
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if (debug) write(0,*) iam,' buildprol into buildmatching:',&
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& nr, nc
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if (debug_sync) then
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call psb_barrier(ictxt)
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if (iam == 0) write(0,*)' buildprol into buildmatching:',&
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& nr, nc
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end if
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if (do_timings) call psb_toc(idx_phase1)
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if (do_timings) call psb_tic(idx_bldmtc)
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call amg_dbuild_decmatch(w,a,desc_a,mate,info)
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if (do_timings) call psb_toc(idx_bldmtc)
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if (debug) write(0,*) iam,' buildprol from buildmatching:',&
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& info
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if (debug_sync) then
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call psb_barrier(ictxt)
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if (iam == 0) write(0,*)' out from buildmatching:', info
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end if
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if (info == 0) then
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if (do_timings) call psb_tic(idx_phase2)
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if (debug_sync) then
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call psb_barrier(ictxt)
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if (iam == 0) write(0,*)' Into building the tentative prol:'
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end if
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call psb_geall(wtemp,desc_a,info)
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wtemp = dzero
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call psb_geasb(wtemp,desc_a,info)
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nlaggr(iam) = 0
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nlpairs = 0
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nlsingl = 0
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nunmatched = 0
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!
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! First sweep
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! On return from build_matching, mate has been converted to local numbering,
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! so assigning to idx is OK.
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!
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do k=1, nr
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idx = mate(k)
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!
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! Figure out an allocation of aggregates to processes
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!
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if (idx < 0) then
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!
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! Unmatched vertex, potential singleton.
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!
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nunmatched = nunmatched + 1
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if (abs(w(k))<epsilon(nrmagg)) then
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! Keep it unaggregated
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wtemp(k) = dzero
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else
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! Create a singleton aggregate
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nlaggr(iam) = nlaggr(iam) + 1
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ilaggr(k) = nlaggr(iam)
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wtemp(k) = w(k)/abs(w(k))
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nlsingl = nlsingl + 1
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end if
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else if (idx > nc) then
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write(0,*) 'Impossible: mate(k) > nc'
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cycle
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else
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if (ilaggr(k) == -1) then
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wk = w(k)
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widx = w(idx)
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wmax = max(abs(wk),abs(widx))
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nrmagg = wmax*sqrt((wk/wmax)**2+(widx/wmax)**2)
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if (nrmagg > epsilon(nrmagg)) then
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if (idx <= nr) then
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if (ilaggr(idx) == -1) then
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! Now, if both vertices are local, the aggregate is local
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! (kinda obvious).
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nlaggr(iam) = nlaggr(iam) + 1
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ilaggr(k) = nlaggr(iam)
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ilaggr(idx) = nlaggr(iam)
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wtemp(k) = w(k)/nrmagg
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wtemp(idx) = w(idx)/nrmagg
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end if
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nlpairs = nlpairs+1
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!!$ else if (idx <= nc) then
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!!$ !
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!!$ ! This pair involves a non-local vertex.
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!!$ ! Set wtemp, then apply a tie-breaking algorithm
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!!$ wtemp(k) = w(k)/nrmagg
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!!$ idxg = ilv(idx)
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!!$ kg = ilv(k)
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!!$ if (reproducible_) then
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!!$ !
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!!$ ! Tie-break by assigning to the lowest-index process
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!!$ ! so that the numbering is the same as with NP=1
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!!$ !
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!!$ if (kg < idxg) then
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!!$ nlaggr(iam) = nlaggr(iam) + 1
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!!$ ilaggr(k) = nlaggr(iam)
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!!$ nlpairs = nlpairs+1
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!!$ else
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!!$ ilaggr(k) = -2
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!!$ end if
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!!$ else
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!!$ ! Use a statistically unbiased tie-breaking rule,
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!!$ ! this will give an even spread.
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!!$ ! Delegate to i_aggr_assign.
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!!$ ! Should be a symmetric function.
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!!$ !
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!!$ call desc_a%indxmap%qry_halo_owner(idx,iown,info)
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!!$! !$ ip = amg_i_aggr_assign(iam, iown, kg, idxg, wk, widx, nrmagg)
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!!$ if (iam == ip) then
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!!$ nlaggr(iam) = nlaggr(iam) + 1
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!!$ ilaggr(k) = nlaggr(iam)
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!!$ nlpairs = nlpairs+1
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!!$ else
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!!$ ilaggr(k) = -2
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!!$ end if
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!!$ end if
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end if
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else
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if (abs(w(k))<epsilon(nrmagg)) then
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! Keep it unaggregated
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wtemp(k) = dzero
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else
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! Create a singleton aggregate
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nlaggr(iam) = nlaggr(iam) + 1
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ilaggr(k) = nlaggr(iam)
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wtemp(k) = w(k)/abs(w(k))
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nlsingl = nlsingl + 1
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end if
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end if
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end if
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end if
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end do
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if (do_timings) call psb_toc(idx_phase2)
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if (do_timings) call psb_tic(idx_phase3)
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! Ok, now compute offsets, gather halo and fix non-local
|
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|
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! aggregates (those where ilaggr == -2)
|
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|
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call psb_sum(ictxt,nlaggr)
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ntaggr = sum(nlaggr(0:np-1))
|
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naggrm1 = sum(nlaggr(0:iam-1))
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naggrp1 = sum(nlaggr(0:iam))
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!
|
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! Shift all indices already assigned (i.e. >0)
|
||
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!
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do k=1,nr
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if (ilaggr(k) > 0) ilaggr(k) = ilaggr(k) + naggrm1
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end do
|
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call psb_halo(ilaggr,desc_a,info)
|
||
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call psb_halo(wtemp,desc_a,info)
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! Cleanup as yet unmarked entries
|
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do k=1,nr
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if (ilaggr(k) == -2) then
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idx = mate(k)
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if (idx > nr) then
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i = ilaggr(idx)
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if (i > 0) then
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ilaggr(k) = i
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else
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||
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write(0,*) 'Error : unresolved (paired) index ',k,idx,i,nr,nc, ilv(k),ilv(idx)
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end if
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else
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||
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write(0,*) 'Error : unresolved (paired) index ',k,idx,i,nr,nc, ilv(k),ilv(idx)
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end if
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||
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end if
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||
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if (ilaggr(k) <0) then
|
||
|
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write(0,*) 'Decmatch: Funny number: ',k,ilv(k),ilaggr(k),wtemp(k)
|
||
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end if
|
||
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end do
|
||
|
|
if (debug_sync) then
|
||
|
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call psb_barrier(ictxt)
|
||
|
|
if (iam == 0) write(0,*)' Done building the tentative prol:'
|
||
|
|
end if
|
||
|
|
|
||
|
|
|
||
|
|
if (dump_mate) then
|
||
|
|
block
|
||
|
|
integer(psb_lpk_), allocatable :: glaggr(:)
|
||
|
|
write(aname,'(a,i3.3,a,i3.3,a)') 'mateg-',cnt,'-p',iam,'.mtx'
|
||
|
|
open(20,file=aname)
|
||
|
|
write(20,'(a,I3,a)') '% sparse vector on process ',iam,' '
|
||
|
|
do k=1, nr
|
||
|
|
write(20,'(3(I8,1X))') ilv(k),ilv(mate(k))
|
||
|
|
end do
|
||
|
|
close(20)
|
||
|
|
write(aname,'(a,i3.3,a,i3.3,a)') 'nloc-',cnt,'-p',iam,'.mtx'
|
||
|
|
open(20,file=aname)
|
||
|
|
write(20,'(a,I3,a)') '% sparse vector on process ',iam,' '
|
||
|
|
write(20,'(a,I12,a)') 'nlpairs ',nlpairs
|
||
|
|
write(20,'(a,I12,a)') 'nlsingl ',nlsingl
|
||
|
|
write(20,'(a,I12,a)') 'nlaggr(iam) ',nlaggr(iam)
|
||
|
|
close(20)
|
||
|
|
write(aname,'(a,i3.3,a,i3.3,a,i3.3,a)') 'ilaggr-',cnt,'-i',iam,'-p',np,'.mtx'
|
||
|
|
open(20,file=aname)
|
||
|
|
write(20,'(a,I3,a)') '% sparse vector on process ',iam,' '
|
||
|
|
do k=1, nr
|
||
|
|
write(20,'(3(I8,1X))') ilv(k),ilaggr(k)
|
||
|
|
end do
|
||
|
|
close(20)
|
||
|
|
|
||
|
|
write(aname,'(a,i3.3,a,i3.3,a)') 'glaggr-',cnt,'-p',np,'.mtx'
|
||
|
|
call psb_gather(glaggr,ilaggr,desc_a,info,root=izero)
|
||
|
|
if (iam==0) call mm_array_write(glaggr,'Aggregates ',info,filename=aname)
|
||
|
|
|
||
|
|
cnt=cnt+1
|
||
|
|
end block
|
||
|
|
end if
|
||
|
|
block
|
||
|
|
integer(psb_lpk_) :: v(3)
|
||
|
|
v(1) = nunmatched
|
||
|
|
v(2) = nlsingl
|
||
|
|
v(3) = nlpairs
|
||
|
|
call psb_sum(ictxt,v)
|
||
|
|
nunmatched = v(1)
|
||
|
|
nlsingl = v(2)
|
||
|
|
nlpairs = v(3)
|
||
|
|
|
||
|
|
end block
|
||
|
|
if (print_statistics) then
|
||
|
|
if (iam == 0) then
|
||
|
|
write(0,*) 'Matching statistics: Unmatched nodes ',&
|
||
|
|
& nunmatched,' Singletons:',nlsingl,' Pairs:',nlpairs
|
||
|
|
end if
|
||
|
|
end if
|
||
|
|
|
||
|
|
if (display_out_) then
|
||
|
|
block
|
||
|
|
integer(psb_ipk_) :: idx
|
||
|
|
!
|
||
|
|
! And finally print out
|
||
|
|
!
|
||
|
|
do i=0,np-1
|
||
|
|
call psb_barrier(ictxt)
|
||
|
|
if (iam == i) then
|
||
|
|
write(0,*) 'Process ', iam,' hosts aggregates: (',naggrm1+1,' : ',naggrp1-1,')'
|
||
|
|
do k=1, nr
|
||
|
|
idx = mate(k)
|
||
|
|
kg = ilv(k)
|
||
|
|
if (idx >0) then
|
||
|
|
idxg = ilv(idx)
|
||
|
|
else
|
||
|
|
idxg = -1
|
||
|
|
end if
|
||
|
|
if (idx < 0) then
|
||
|
|
write(0,*) kg,': singleton (',kg,' ( Proc',iam,') ) into aggregate => ', ilaggr(k)
|
||
|
|
else if (idx <= nr) then
|
||
|
|
write(0,*) kg,': paired with (',idxg,' ( Proc',iam,') ) into aggregate => ', ilaggr(k)
|
||
|
|
else
|
||
|
|
call desc_a%indxmap%qry_halo_owner(idx,iown,info)
|
||
|
|
write(0,*) kg,': paired with (',idxg,' ( Proc',iown,') ) into aggregate => ', ilaggr(k)
|
||
|
|
end if
|
||
|
|
end do
|
||
|
|
flush(0)
|
||
|
|
end if
|
||
|
|
end do
|
||
|
|
end block
|
||
|
|
end if
|
||
|
|
|
||
|
|
! Dirty trick: allocate tmpcoo with local
|
||
|
|
! number of aggregates, then change to ntaggr.
|
||
|
|
! Just to make sure the allocation is not global
|
||
|
|
lnr = nr
|
||
|
|
call tmpcoo%allocate(lnr,nlaggr(iam),lnr)
|
||
|
|
k = 0
|
||
|
|
do i=1,nr
|
||
|
|
!
|
||
|
|
! Note: at this point, a value ilaggr(i)<=0
|
||
|
|
! tags an unaggregated row, and it has to be
|
||
|
|
! left alone (i.e.: it should stay at fine level only)
|
||
|
|
!
|
||
|
|
if (ilaggr(i)>0) then
|
||
|
|
k = k + 1
|
||
|
|
tmpcoo%val(k) = wtemp(i)
|
||
|
|
tmpcoo%ia(k) = i
|
||
|
|
tmpcoo%ja(k) = ilaggr(i)
|
||
|
|
end if
|
||
|
|
end do
|
||
|
|
call tmpcoo%set_nzeros(k)
|
||
|
|
call tmpcoo%set_dupl(psb_dupl_add_)
|
||
|
|
call tmpcoo%set_sorted() ! This is now in row-major
|
||
|
|
|
||
|
|
if (display_out_) then
|
||
|
|
call psb_barrier(ictxt)
|
||
|
|
flush(0)
|
||
|
|
|
||
|
|
if (iam == 0) write(0,*) 'Prolongator: '
|
||
|
|
flush(0)
|
||
|
|
do i=0,np-1
|
||
|
|
call psb_barrier(ictxt)
|
||
|
|
if (iam == i) then
|
||
|
|
do k=1, nr
|
||
|
|
write(0,*) ilv(tmpcoo%ia(k)),tmpcoo%ja(k), tmpcoo%val(k)
|
||
|
|
end do
|
||
|
|
flush(0)
|
||
|
|
end if
|
||
|
|
end do
|
||
|
|
end if
|
||
|
|
|
||
|
|
call prol%mv_from(tmpcoo)
|
||
|
|
if (do_timings) call psb_toc(idx_phase3)
|
||
|
|
|
||
|
|
if (print_out_) then
|
||
|
|
write(aname,'(a,i3.3,a)') 'prol-g-',iam,'.mtx'
|
||
|
|
call prol%print(fname=aname,head='Test ',ivr=ilv)
|
||
|
|
write(aname,'(a,i3.3,a)') 'prol-',iam,'.mtx'
|
||
|
|
call prol%print(fname=aname,head='Test ')
|
||
|
|
end if
|
||
|
|
|
||
|
|
else
|
||
|
|
write(0,*) iam,' : error from Matching: ',info
|
||
|
|
end if
|
||
|
|
|
||
|
|
end subroutine amg_ddecmatch_build_prol
|
||
|
|
|
||
|
|
!!$ function amg_i_daggr_assign(iam, iown, kg, idxg, wk, widx, nrmagg) &
|
||
|
|
!!$ & result(iproc)
|
||
|
|
!!$ !
|
||
|
|
!!$ ! How to break ties? This
|
||
|
|
!!$ ! must be a symmetric function, i.e.
|
||
|
|
!!$ ! the result value iproc MUST be the same upon
|
||
|
|
!!$ ! swapping simultaneously all pairs
|
||
|
|
!!$ ! (iam,iown) (kg,idxg) (wk,widx)
|
||
|
|
!!$ !
|
||
|
|
!!$ implicit none
|
||
|
|
!!$ integer(psb_ipk_) :: iproc
|
||
|
|
!!$ integer(psb_ipk_), intent(in) :: iam, iown
|
||
|
|
!!$ integer(psb_lpk_), intent(in) :: kg, idxg
|
||
|
|
!!$ real(psb_dpk_), intent(in) :: wk, widx, nrmagg
|
||
|
|
!!$ !
|
||
|
|
!!$ integer(psb_lpk_) :: kg2, idxg2
|
||
|
|
!!$
|
||
|
|
!!$ idxg2 = mod(idxg,2)
|
||
|
|
!!$ kg2 = mod(kg,2)
|
||
|
|
!!$
|
||
|
|
!!$ !
|
||
|
|
!!$ ! In this particular tie-breaking rule we are ignoring WK, WIDX.
|
||
|
|
!!$ ! This should statistically entail an even spread of aggregates.
|
||
|
|
!!$ !
|
||
|
|
!!$ if ((kg2/=0).and.(idxg2/=0)) then
|
||
|
|
!!$ ! If both global indices are odd,
|
||
|
|
!!$ ! assign to the higher number process
|
||
|
|
!!$ iproc = max(iam,iown)
|
||
|
|
!!$
|
||
|
|
!!$ else if ((kg2==0).and.(idxg2==0)) then
|
||
|
|
!!$ ! If both global indices are even,
|
||
|
|
!!$ ! assign to the lower number process;
|
||
|
|
!!$ iproc = min(iam,iown)
|
||
|
|
!!$ else
|
||
|
|
!!$ ! If the global indices are mixed,
|
||
|
|
!!$ ! then assign to the owner of the odd index
|
||
|
|
!!$ if (kg2 /= 0) then
|
||
|
|
!!$ iproc = iam
|
||
|
|
!!$ else
|
||
|
|
!!$ iproc = iown
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$ end function amg_i_daggr_assign
|
||
|
|
|
||
|
|
|
||
|
|
subroutine amg_dbuild_decmatch(w,a,desc_a,mate,info)
|
||
|
|
use psb_base_mod
|
||
|
|
use psb_util_mod
|
||
|
|
use iso_c_binding
|
||
|
|
implicit none
|
||
|
|
real(psb_dpk_), target :: w(:)
|
||
|
|
type(psb_dspmat_type), intent(inout) :: a
|
||
|
|
type(psb_desc_type) :: desc_a
|
||
|
|
integer(psb_ipk_), allocatable, intent(out), target :: mate(:)
|
||
|
|
integer(psb_ipk_), intent(out) :: info
|
||
|
|
|
||
|
|
type(psb_d_csr_sparse_mat), target :: tcsr
|
||
|
|
real(psb_dpk_), allocatable, target :: diag(:)
|
||
|
|
real(psb_dpk_) :: ph0t,ph1t,ph2t
|
||
|
|
type(psb_ctxt_type) :: ictxt
|
||
|
|
integer(psb_ipk_) :: iam, np
|
||
|
|
integer(psb_ipk_) :: nr, nc, nz, i, nunmatch
|
||
|
|
integer(psb_ipk_), save :: cnt=2
|
||
|
|
logical, parameter :: debug=.false., dump_ahat=.false., debug_sync=.false.
|
||
|
|
logical, parameter :: old_style=.false., sort_minp=.true.
|
||
|
|
character(len=40) :: name='build_matching', fname
|
||
|
|
integer(psb_ipk_), save :: idx_cmboxp=-1, idx_bldahat=-1, idx_phase2=-1, idx_phase3=-1
|
||
|
|
logical, parameter :: do_timings=.true.
|
||
|
|
|
||
|
|
ictxt = desc_a%get_ctxt()
|
||
|
|
call psb_info(ictxt,iam,np)
|
||
|
|
|
||
|
|
nr = a%get_nrows()
|
||
|
|
call a%cp_to(tcsr)
|
||
|
|
call psb_realloc(nr,mate,info)
|
||
|
|
diag = a%get_diag(info)
|
||
|
|
!
|
||
|
|
! Now call matching!
|
||
|
|
!
|
||
|
|
if (debug) write(0,*) iam,' buildmatching into PMatchBox:'
|
||
|
|
if (do_timings) call psb_tic(idx_cmboxp)
|
||
|
|
info = dnew_Match_If(nr,c_loc(tcsr%irp),c_loc(tcsr%ja),&
|
||
|
|
& c_loc(tcsr%val),c_loc(diag),c_loc(w),c_loc(mate))
|
||
|
|
if (do_timings) call psb_toc(idx_cmboxp)
|
||
|
|
if (debug) write(0,*) iam,' buildmatching from PMatchBox:', info
|
||
|
|
if (debug_sync) then
|
||
|
|
call psb_max(ictxt,info)
|
||
|
|
if (iam == 0) write(0,*)' done PMatchBox', info
|
||
|
|
end if
|
||
|
|
|
||
|
|
if (do_timings) call psb_tic(idx_phase3)
|
||
|
|
nunmatch = count(mate(1:nr)<=0)
|
||
|
|
! call psb_sum(ictxt,nunmatch)
|
||
|
|
if (nunmatch /= 0) write(0,*) iam,' Unmatched nodes local imbalance ',nunmatch
|
||
|
|
! if (count(mate(1:nr)<0) /= nunmatch) write(0,*) iam,' Matching results ?',&
|
||
|
|
! & nunmatch, count(mate(1:nr)<0)
|
||
|
|
if (debug_sync) then
|
||
|
|
call psb_barrier(ictxt)
|
||
|
|
if (iam == 0) write(0,*)' done build_matching '
|
||
|
|
end if
|
||
|
|
|
||
|
|
if (do_timings) call psb_toc(idx_phase3)
|
||
|
|
return
|
||
|
|
|
||
|
|
9999 continue
|
||
|
|
call psb_error(ictxt)
|
||
|
|
contains
|
||
|
|
subroutine fix_order(n,ja,val,iret)
|
||
|
|
use psb_base_mod
|
||
|
|
implicit none
|
||
|
|
integer(psb_ipk_), intent(in) :: n
|
||
|
|
integer(psb_lpk_), intent(inout) :: ja(:)
|
||
|
|
real(psb_dpk_), intent(inout) :: val(:)
|
||
|
|
integer(psb_ipk_),intent(out) :: iret
|
||
|
|
integer(psb_lpk_), allocatable :: ix(:)
|
||
|
|
real(psb_dpk_), allocatable :: tmp(:)
|
||
|
|
|
||
|
|
allocate(ix(n), tmp(n),stat=iret)
|
||
|
|
if (iret /= 0) return
|
||
|
|
call psb_msort(ja(1:n),ix=ix,dir=psb_sort_up_)
|
||
|
|
tmp(1:n) = val(ix(1:n))
|
||
|
|
val(1:n) = tmp(1:n)
|
||
|
|
end subroutine fix_order
|
||
|
|
|
||
|
|
end subroutine amg_dbuild_decmatch
|
||
|
|
|
||
|
|
!!$ subroutine amg_dbuild_ahat(w,a,ahat,desc_a,info,symmetrize)
|
||
|
|
!!$ use psb_base_mod
|
||
|
|
!!$ implicit none
|
||
|
|
!!$ real(psb_dpk_), intent(in) :: w(:)
|
||
|
|
!!$ type(psb_dspmat_type), intent(inout) :: a
|
||
|
|
!!$ type(psb_dspmat_type), intent(out) :: ahat
|
||
|
|
!!$ type(psb_desc_type) :: desc_a
|
||
|
|
!!$ integer(psb_ipk_), intent(out) :: info
|
||
|
|
!!$ logical, optional :: symmetrize
|
||
|
|
!!$
|
||
|
|
!!$ type(psb_dspmat_type) :: atnd
|
||
|
|
!!$ type(psb_d_coo_sparse_mat) :: tcoo1, tcoo2, tcoo3
|
||
|
|
!!$ real(psb_dpk_), allocatable :: diag(:)
|
||
|
|
!!$ integer(psb_lpk_), allocatable :: ilv(:)
|
||
|
|
!!$ logical, parameter :: debug=.false., dump=.false., dump_ahat=.false., dump_inp=.false.
|
||
|
|
!!$ logical :: symmetrize_
|
||
|
|
!!$ real(psb_dpk_) :: aii, ajj, aij, wii, wjj, tmp1, tmp2, minabs, edgnrm
|
||
|
|
!!$ integer(psb_ipk_) :: nr, nc, nz, i, nz2, nrg, ii, jj, k, k2, ncols
|
||
|
|
!!$ integer(psb_lpk_) :: nzglob
|
||
|
|
!!$ type(psb_ctxt_type) :: ictxt
|
||
|
|
!!$ integer(psb_ipk_) :: me, np
|
||
|
|
!!$ character(len=80) :: aname
|
||
|
|
!!$ real(psb_dpk_), parameter :: eps=epsilon(1.d0)
|
||
|
|
!!$ integer(psb_ipk_), save :: idx_glbt=-1, idx_phase1=-1, idx_phase2=-1
|
||
|
|
!!$ logical, parameter :: do_timings=.true.
|
||
|
|
!!$ logical, parameter :: debug_symmetry = .false., check_size=.false.
|
||
|
|
!!$ logical, parameter :: unroll_logtrans=.false.
|
||
|
|
!!$
|
||
|
|
!!$ ictxt = desc_a%get_ctxt()
|
||
|
|
!!$ call psb_info(ictxt,me,np)
|
||
|
|
!!$ if (present(symmetrize)) then
|
||
|
|
!!$ symmetrize_ = symmetrize
|
||
|
|
!!$ else
|
||
|
|
!!$ symmetrize_ = .false.
|
||
|
|
!!$ end if
|
||
|
|
!!$ if ((do_timings).and.(idx_phase1==-1)) &
|
||
|
|
!!$ & idx_phase1 = psb_get_timer_idx("BLD_AHAT: phase1 ")
|
||
|
|
!!$ if ((do_timings).and.(idx_glbt==-1)) &
|
||
|
|
!!$ & idx_glbt = psb_get_timer_idx("BLD_AHAT: glob_transp")
|
||
|
|
!!$ if ((do_timings).and.(idx_phase2==-1)) &
|
||
|
|
!!$ & idx_phase2 = psb_get_timer_idx("BLD_AHAT: phase2 ")
|
||
|
|
!!$ if (do_timings) call psb_tic(idx_phase1)
|
||
|
|
!!$ if (dump_inp) then
|
||
|
|
!!$ block
|
||
|
|
!!$ type(psb_ldspmat_type) :: amglob
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'a-bld-inp-',me,'.mtx'
|
||
|
|
!!$ call a%print(fname=aname,head='Test ')
|
||
|
|
!!$ call psb_gather(amglob,a,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i0,a)') 'a-bld-inp-g-',amglob%get_nrows(),'.mtx'
|
||
|
|
!!$ call amglob%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ end block
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ !
|
||
|
|
!!$ ! Extract diagonal of A
|
||
|
|
!!$ !
|
||
|
|
!!$ call a%cp_to(tcoo1)
|
||
|
|
!!$! !$ call a%triu(atnd,info)
|
||
|
|
!!$! !$ call atnd%mv_to(tcoo1)
|
||
|
|
!!$ nr = tcoo1%get_nrows()
|
||
|
|
!!$ nc = tcoo1%get_ncols()
|
||
|
|
!!$ nz = tcoo1%get_nzeros()
|
||
|
|
!!$ diag = a%get_diag(info)
|
||
|
|
!!$ call psb_realloc(nc,diag,info)
|
||
|
|
!!$ call psb_halo(diag,desc_a,info)
|
||
|
|
!!$
|
||
|
|
!!$ ncols = desc_a%get_local_cols()
|
||
|
|
!!$ call psb_realloc(ncols,ilv,info)
|
||
|
|
!!$ do i=1, ncols
|
||
|
|
!!$ ilv(i) = i
|
||
|
|
!!$ end do
|
||
|
|
!!$ call desc_a%l2gip(ilv,info,owned=.false.)
|
||
|
|
!!$ nr = tcoo1%get_nrows()
|
||
|
|
!!$ nc = tcoo1%get_ncols()
|
||
|
|
!!$ nz = tcoo1%get_nzeros()
|
||
|
|
!!$ call tcoo2%allocate(nr,nc,int(1.25*nz))
|
||
|
|
!!$ k2 = 0
|
||
|
|
!!$ !
|
||
|
|
!!$ ! Build the entries of \^A for matching
|
||
|
|
!!$ !
|
||
|
|
!!$ minabs = huge(dzero)
|
||
|
|
!!$ do k = 1, nz
|
||
|
|
!!$ ii = tcoo1%ia(k)
|
||
|
|
!!$ jj = tcoo1%ja(k)
|
||
|
|
!!$ !
|
||
|
|
!!$ ! Run over only the upper triangle, then transpose.
|
||
|
|
!!$ ! In theory, A was SPD; in practice, since we
|
||
|
|
!!$ ! are building the hierarchy with Galerkin products P^T A P,
|
||
|
|
!!$ ! A will be affected by round-off
|
||
|
|
!!$ !
|
||
|
|
!!$ if (ilv(ii)<ilv(jj)) then
|
||
|
|
!!$ aij = tcoo1%val(k)
|
||
|
|
!!$ aii = diag(ii)
|
||
|
|
!!$ ajj = diag(jj)
|
||
|
|
!!$ wii = w(ii)
|
||
|
|
!!$ wjj = w(jj)
|
||
|
|
!!$ edgnrm = aii*(wii**2) + ajj*(wjj**2)
|
||
|
|
!!$ k2 = k2 + 1
|
||
|
|
!!$ tcoo2%ia(k2) = ii
|
||
|
|
!!$ tcoo2%ja(k2) = jj
|
||
|
|
!!$ if (edgnrm > eps) then
|
||
|
|
!!$ tcoo2%val(k2) = done - (2*done*aij*wii*wjj)/(aii*(wii**2) + ajj*(wjj**2))
|
||
|
|
!!$ else
|
||
|
|
!!$ tcoo2%val(k2) = eps
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$ !else
|
||
|
|
!!$ ! write(0,*) 'build_ahat: index error :',ii,jj,' : boundaries :',nr,nc
|
||
|
|
!!$ !end if
|
||
|
|
!!$ end do
|
||
|
|
!!$ call tcoo2%set_nzeros(k2)
|
||
|
|
!!$
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ block
|
||
|
|
!!$ type(psb_ldspmat_type) :: amglob
|
||
|
|
!!$ call ahat%cp_from(tcoo2)
|
||
|
|
!!$ call psb_gather(amglob,ahat,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i0,a)') 'ahat-gu-',desc_a%get_global_rows(),'.mtx'
|
||
|
|
!!$ call amglob%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ write(aname,'(a,i0,a,i0,a)') 'ahat-gu-',desc_a%get_global_rows(),'-p',me,'.mtx'
|
||
|
|
!!$ call ahat%print(fname=aname,head='Test ',iv=ilv)
|
||
|
|
!!$ write(aname,'(a,i0,a,i0,a)') 'ainp-ahat-',desc_a%get_global_rows(),'-p',me,'.mtx'
|
||
|
|
!!$ call a%print(fname=aname,head='Test ',iv=ilv)
|
||
|
|
!!$ call psb_gather(amglob,a,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i0,a)') 'ainp-ahat-g-',desc_a%get_global_rows(),'.mtx'
|
||
|
|
!!$ call amglob%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ write(0,*) 'Done build_ahat'
|
||
|
|
!!$ end block
|
||
|
|
!!$ end if
|
||
|
|
!!$ if (do_timings) call psb_toc(idx_phase1)
|
||
|
|
!!$ if (do_timings) call psb_tic(idx_glbt)
|
||
|
|
!!$
|
||
|
|
!!$ call psb_glob_transpose(tcoo2,desc_a,info,atrans=tcoo1)
|
||
|
|
!!$ if (do_timings) call psb_toc(idx_glbt)
|
||
|
|
!!$ if (do_timings) call psb_tic(idx_phase2)
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ block
|
||
|
|
!!$ type(psb_ldspmat_type) :: amglob
|
||
|
|
!!$ call atnd%cp_from(tcoo1)
|
||
|
|
!!$ call psb_gather(amglob,atnd,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i0,a)') 'ahat-gl-',desc_a%get_global_rows(),'.mtx'
|
||
|
|
!!$ call amglob%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ write(aname,'(a,i0,a,i0,a)') 'ahat-gl-',desc_a%get_global_rows(),'-p',me,'.mtx'
|
||
|
|
!!$ call ahat%print(fname=aname,head='Test ',iv=ilv)
|
||
|
|
!!$ write(0,*) 'Done build_ahat'
|
||
|
|
!!$ end block
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ nz = tcoo1%get_nzeros()
|
||
|
|
!!$ nz2 = tcoo2%get_nzeros()
|
||
|
|
!!$ call tcoo2%ensure_size(nz+nz2)
|
||
|
|
!!$ tcoo2%ia(nz2+1:nz2+nz) = tcoo1%ia(1:nz)
|
||
|
|
!!$ tcoo2%ja(nz2+1:nz2+nz) = tcoo1%ja(1:nz)
|
||
|
|
!!$ tcoo2%val(nz2+1:nz2+nz) = tcoo1%val(1:nz)
|
||
|
|
!!$ call tcoo2%set_nzeros(nz+nz2)
|
||
|
|
!!$ call tcoo2%fix(info)
|
||
|
|
!!$ call tcoo1%free()
|
||
|
|
!!$ nz = tcoo2%get_nzeros()
|
||
|
|
!!$ if (unroll_logtrans) then
|
||
|
|
!!$ minabs = huge(dzero)
|
||
|
|
!!$ do k = 1, nz
|
||
|
|
!!$ tcoo2%val(k) = abs(tcoo2%val(k))
|
||
|
|
!!$ minabs = min(minabs,tcoo2%val(k))
|
||
|
|
!!$ end do
|
||
|
|
!!$ else
|
||
|
|
!!$ minabs = minval(abs(tcoo2%val(1:nz)))
|
||
|
|
!!$ end if
|
||
|
|
!!$ call psb_min(ictxt,minabs)
|
||
|
|
!!$ if (minabs <= dzero) then
|
||
|
|
!!$ if (me == 0) write(0,*) me, 'Min value for log correction is <=zero! '
|
||
|
|
!!$ minabs = done
|
||
|
|
!!$ end if
|
||
|
|
!!$ if (unroll_logtrans) then
|
||
|
|
!!$ do k = 1, nz
|
||
|
|
!!$ ! tcoo2%val has already been subject to abs() above.
|
||
|
|
!!$ tcoo2%val(k) = log(tcoo2%val(k)/(0.999*minabs))
|
||
|
|
!!$ if (tcoo2%val(k)<0) write(0,*) me, 'Warning: negative log output!'
|
||
|
|
!!$ end do
|
||
|
|
!!$ else
|
||
|
|
!!$ tcoo2%val(1:nz) = log(abs(tcoo2%val(1:nz))/(0.999*minabs))
|
||
|
|
!!$ if (any(tcoo2%val(1:nz)<0)) write(0,*) me, 'Warning: negative log output!'
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ call ahat%mv_from(tcoo2)
|
||
|
|
!!$
|
||
|
|
!!$ if (do_timings) call psb_toc(idx_phase2)
|
||
|
|
!!$
|
||
|
|
!!$ if (check_size) then
|
||
|
|
!!$ nzglob = ahat%get_nzeros()
|
||
|
|
!!$ call psb_sum(ictxt,nzglob)
|
||
|
|
!!$ if (me==0) write(0,*) 'From build_ahat: global nzeros ',desc_a%get_global_rows(),nzglob
|
||
|
|
!!$ end if
|
||
|
|
!!$ if (debug_symmetry) then
|
||
|
|
!!$ block
|
||
|
|
!!$ integer(psb_ipk_) :: nz1, nz2
|
||
|
|
!!$ real(psb_dpk_) :: mxv
|
||
|
|
!!$ call ahat%cp_to(tcoo1)
|
||
|
|
!!$ call psb_glob_transpose(tcoo1,desc_a,info,atrans=tcoo2)
|
||
|
|
!!$ nz1 = tcoo1%get_nzeros()
|
||
|
|
!!$ nz2 = tcoo2%get_nzeros()
|
||
|
|
!!$ call tcoo1%reallocate(nz1+nz2)
|
||
|
|
!!$ tcoo1%ia(nz1+1:nz1+nz2) = tcoo2%ia(1:nz2)
|
||
|
|
!!$ tcoo1%ja(nz1+1:nz1+nz2) = tcoo2%ja(1:nz2)
|
||
|
|
!!$ tcoo1%val(nz1+1:nz1+nz2) = -tcoo2%val(1:nz2)
|
||
|
|
!!$ call tcoo1%set_nzeros(nz1+nz2)
|
||
|
|
!!$ call tcoo1%set_dupl(psb_dupl_add_)
|
||
|
|
!!$ call tcoo1%fix(info)
|
||
|
|
!!$ nz1 = tcoo1%get_nzeros()
|
||
|
|
!!$ mxv = maxval(abs(tcoo1%val(1:nz1)))
|
||
|
|
!!$ call psb_max(ictxt,mxv)
|
||
|
|
!!$ if (me==0) write(0,*) 'Maximum disp from symmetry:',mxv
|
||
|
|
!!$ end block
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ if (dump_ahat) then
|
||
|
|
!!$ block
|
||
|
|
!!$ type(psb_ldspmat_type) :: amglob
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'ahat-hfa-l-',me,'.mtx'
|
||
|
|
!!$ call ahat%print(fname=aname,head='Test ')
|
||
|
|
!!$ call psb_gather(amglob,ahat,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i0,a)') 'ahat-hfa-g-',amglob%get_nrows(),'.mtx'
|
||
|
|
!!$ call amglob%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ write(0,*) 'Done build_ahat'
|
||
|
|
!!$ end block
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ end subroutine amg_dbuild_ahat
|
||
|
|
!!$
|
||
|
|
!!$ subroutine amg_dgtranspose(ain,aout,desc_a,info)
|
||
|
|
!!$ use psb_base_mod
|
||
|
|
!!$ implicit none
|
||
|
|
!!$ type(psb_ldspmat_type), intent(in) :: ain
|
||
|
|
!!$ type(psb_ldspmat_type), intent(out) :: aout
|
||
|
|
!!$ type(psb_desc_type) :: desc_a
|
||
|
|
!!$ integer(psb_ipk_), intent(out) :: info
|
||
|
|
!!$
|
||
|
|
!!$ !
|
||
|
|
!!$ ! BEWARE: This routine works under the assumption
|
||
|
|
!!$ ! that the same DESC_A works for both A and A^T, which
|
||
|
|
!!$ ! essentially means that A has a symmetric pattern.
|
||
|
|
!!$ !
|
||
|
|
!!$ type(psb_ldspmat_type) :: atmp, ahalo, aglb
|
||
|
|
!!$ type(psb_ld_coo_sparse_mat) :: tmpcoo
|
||
|
|
!!$ type(psb_ld_csr_sparse_mat) :: tmpcsr
|
||
|
|
!!$ type(psb_ctxt_type) :: ictxt
|
||
|
|
!!$ integer(psb_ipk_) :: me, np
|
||
|
|
!!$ integer(psb_lpk_) :: i, j, k, nrow, ncol
|
||
|
|
!!$ integer(psb_lpk_), allocatable :: ilv(:)
|
||
|
|
!!$ character(len=80) :: aname
|
||
|
|
!!$ logical, parameter :: debug=.false., dump=.false., debug_sync=.false.
|
||
|
|
!!$
|
||
|
|
!!$ ictxt = desc_a%get_context()
|
||
|
|
!!$ call psb_info(ictxt,me,np)
|
||
|
|
!!$
|
||
|
|
!!$ nrow = desc_a%get_local_rows()
|
||
|
|
!!$ ncol = desc_a%get_local_cols()
|
||
|
|
!!$ if (debug_sync) then
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ if (me == 0) write(0,*) 'Start gtranspose '
|
||
|
|
!!$ end if
|
||
|
|
!!$ call ain%cscnv(tmpcsr,info)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) then
|
||
|
|
!!$ ilv = [(i,i=1,ncol)]
|
||
|
|
!!$ call desc_a%l2gip(ilv,info,owned=.false.)
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atmp-preh-',me,'.mtx'
|
||
|
|
!!$ call ain%print(fname=aname,head='atmp before haloTest ',iv=ilv)
|
||
|
|
!!$ end if
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ call ain%cscnv(atmp,info)
|
||
|
|
!!$ call psb_gather(aglb,atmp,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'aglob-prehalo.mtx'
|
||
|
|
!!$ call aglb%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ !call psb_loc_to_glob(tmpcsr%ja,desc_a,info)
|
||
|
|
!!$ call atmp%mv_from(tmpcsr)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'tmpcsr-',me,'.mtx'
|
||
|
|
!!$ call atmp%print(fname=aname,head='tmpcsr ',iv=ilv)
|
||
|
|
!!$ !call psb_set_debug_level(9999)
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ ! FIXME THIS NEEDS REWORKING
|
||
|
|
!!$ if (debug) write(0,*) me,' Gtranspose into sphalo :',atmp%get_nrows(),atmp%get_ncols()
|
||
|
|
!!$ call psb_sphalo(atmp,desc_a,ahalo,info,rowscale=.true.)
|
||
|
|
!!$ if (debug) write(0,*) me,' Gtranspose from sphalo :',ahalo%get_nrows(),ahalo%get_ncols()
|
||
|
|
!!$ if (info == psb_success_) call psb_rwextd(ncol,atmp,info,b=ahalo)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'ahalo-',me,'.mtx'
|
||
|
|
!!$ call ahalo%print(fname=aname,head='ahalo after haloTest ',iv=ilv)
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atmp-h-',me,'.mtx'
|
||
|
|
!!$ call atmp%print(fname=aname,head='atmp after haloTest ',iv=ilv)
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ if (info == psb_success_) call ahalo%free()
|
||
|
|
!!$
|
||
|
|
!!$ call atmp%cp_to(tmpcoo)
|
||
|
|
!!$ call tmpcoo%transp()
|
||
|
|
!!$ !call psb_glob_to_loc(tmpcoo%ia,desc_a,info,iact='I')
|
||
|
|
!!$ if (debug) write(0,*) 'Before cleanup:',tmpcoo%get_nzeros()
|
||
|
|
!!$
|
||
|
|
!!$ j = 0
|
||
|
|
!!$ do k=1, tmpcoo%get_nzeros()
|
||
|
|
!!$ if ((tmpcoo%ia(k) > 0).and.(tmpcoo%ja(k)>0)) then
|
||
|
|
!!$ j = j+1
|
||
|
|
!!$ tmpcoo%ia(j) = tmpcoo%ia(k)
|
||
|
|
!!$ tmpcoo%ja(j) = tmpcoo%ja(k)
|
||
|
|
!!$ tmpcoo%val(j) = tmpcoo%val(k)
|
||
|
|
!!$ end if
|
||
|
|
!!$ end do
|
||
|
|
!!$ call tmpcoo%set_nzeros(j)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) write(0,*) 'After cleanup:',tmpcoo%get_nzeros()
|
||
|
|
!!$
|
||
|
|
!!$ call ahalo%mv_from(tmpcoo)
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ call psb_gather(aglb,ahalo,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atran-preclip.mtx'
|
||
|
|
!!$ call aglb%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$
|
||
|
|
!!$ call ahalo%csclip(aout,info,imax=nrow)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) write(0,*) 'After clip:',aout%get_nzeros()
|
||
|
|
!!$
|
||
|
|
!!$ if (debug_sync) then
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ if (me == 0) write(0,*) 'End gtranspose '
|
||
|
|
!!$ end if
|
||
|
|
!!$ !call aout%cscnv(info,type='csr')
|
||
|
|
!!$
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atran-',me,'.mtx'
|
||
|
|
!!$ call aout%print(fname=aname,head='atrans ',iv=ilv)
|
||
|
|
!!$ call psb_gather(aglb,aout,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atran.mtx'
|
||
|
|
!!$ call aglb%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ end subroutine amg_dgtranspose
|
||
|
|
!!$
|
||
|
|
!!$ subroutine amg_dhtranspose(ain,aout,desc_a,info)
|
||
|
|
!!$ use psb_base_mod
|
||
|
|
!!$ implicit none
|
||
|
|
!!$ type(psb_ldspmat_type), intent(in) :: ain
|
||
|
|
!!$ type(psb_ldspmat_type), intent(out) :: aout
|
||
|
|
!!$ type(psb_desc_type) :: desc_a
|
||
|
|
!!$ integer(psb_ipk_), intent(out) :: info
|
||
|
|
!!$
|
||
|
|
!!$ !
|
||
|
|
!!$ ! BEWARE: This routine works under the assumption
|
||
|
|
!!$ ! that the same DESC_A works for both A and A^T, which
|
||
|
|
!!$ ! essentially means that A has a symmetric pattern.
|
||
|
|
!!$ !
|
||
|
|
!!$ type(psb_ldspmat_type) :: atmp, ahalo, aglb
|
||
|
|
!!$ type(psb_ld_coo_sparse_mat) :: tmpcoo, tmpc1, tmpc2, tmpch
|
||
|
|
!!$ type(psb_ld_csr_sparse_mat) :: tmpcsr
|
||
|
|
!!$ integer(psb_ipk_) :: nz1, nz2, nzh, nz
|
||
|
|
!!$ type(psb_ctxt_type) :: ictxt
|
||
|
|
!!$ integer(psb_ipk_) :: me, np
|
||
|
|
!!$ integer(psb_lpk_) :: i, j, k, nrow, ncol, nlz
|
||
|
|
!!$ integer(psb_lpk_), allocatable :: ilv(:)
|
||
|
|
!!$ character(len=80) :: aname
|
||
|
|
!!$ logical, parameter :: debug=.false., dump=.false., debug_sync=.false.
|
||
|
|
!!$
|
||
|
|
!!$ ictxt = desc_a%get_context()
|
||
|
|
!!$ call psb_info(ictxt,me,np)
|
||
|
|
!!$
|
||
|
|
!!$ nrow = desc_a%get_local_rows()
|
||
|
|
!!$ ncol = desc_a%get_local_cols()
|
||
|
|
!!$ if (debug_sync) then
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ if (me == 0) write(0,*) 'Start htranspose '
|
||
|
|
!!$ end if
|
||
|
|
!!$ call ain%cscnv(tmpcsr,info)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) then
|
||
|
|
!!$ ilv = [(i,i=1,ncol)]
|
||
|
|
!!$ call desc_a%l2gip(ilv,info,owned=.false.)
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atmp-preh-',me,'.mtx'
|
||
|
|
!!$ call ain%print(fname=aname,head='atmp before haloTest ',iv=ilv)
|
||
|
|
!!$ end if
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ call ain%cscnv(atmp,info)
|
||
|
|
!!$ call psb_gather(aglb,atmp,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'aglob-prehalo.mtx'
|
||
|
|
!!$ call aglb%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ !call psb_loc_to_glob(tmpcsr%ja,desc_a,info)
|
||
|
|
!!$ call atmp%mv_from(tmpcsr)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'tmpcsr-',me,'.mtx'
|
||
|
|
!!$ call atmp%print(fname=aname,head='tmpcsr ',iv=ilv)
|
||
|
|
!!$ !call psb_set_debug_level(9999)
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ ! FIXME THIS NEEDS REWORKING
|
||
|
|
!!$ if (debug) write(0,*) me,' Htranspose into sphalo :',atmp%get_nrows(),atmp%get_ncols()
|
||
|
|
!!$ if (.true.) then
|
||
|
|
!!$ call psb_sphalo(atmp,desc_a,ahalo,info, outfmt='coo ')
|
||
|
|
!!$ call atmp%mv_to(tmpc1)
|
||
|
|
!!$ call ahalo%mv_to(tmpch)
|
||
|
|
!!$ nz1 = tmpc1%get_nzeros()
|
||
|
|
!!$ call psb_loc_to_glob(tmpc1%ia(1:nz1),desc_a,info,iact='I')
|
||
|
|
!!$ call psb_loc_to_glob(tmpc1%ja(1:nz1),desc_a,info,iact='I')
|
||
|
|
!!$ nzh = tmpch%get_nzeros()
|
||
|
|
!!$ call psb_loc_to_glob(tmpch%ia(1:nzh),desc_a,info,iact='I')
|
||
|
|
!!$ call psb_loc_to_glob(tmpch%ja(1:nzh),desc_a,info,iact='I')
|
||
|
|
!!$ nlz = nz1+nzh
|
||
|
|
!!$ call tmpcoo%allocate(ncol,ncol,nlz)
|
||
|
|
!!$ tmpcoo%ia(1:nz1) = tmpc1%ia(1:nz1)
|
||
|
|
!!$ tmpcoo%ja(1:nz1) = tmpc1%ja(1:nz1)
|
||
|
|
!!$ tmpcoo%val(1:nz1) = tmpc1%val(1:nz1)
|
||
|
|
!!$ tmpcoo%ia(nz1+1:nz1+nzh) = tmpch%ia(1:nzh)
|
||
|
|
!!$ tmpcoo%ja(nz1+1:nz1+nzh) = tmpch%ja(1:nzh)
|
||
|
|
!!$ tmpcoo%val(nz1+1:nz1+nzh) = tmpch%val(1:nzh)
|
||
|
|
!!$ call tmpcoo%set_nzeros(nlz)
|
||
|
|
!!$ call tmpcoo%transp()
|
||
|
|
!!$ nz = tmpcoo%get_nzeros()
|
||
|
|
!!$ call psb_glob_to_loc(tmpcoo%ia(1:nz),desc_a,info,iact='I')
|
||
|
|
!!$ call psb_glob_to_loc(tmpcoo%ja(1:nz),desc_a,info,iact='I')
|
||
|
|
!!$ if (.true.) then
|
||
|
|
!!$ call tmpcoo%clean_negidx(info)
|
||
|
|
!!$ else
|
||
|
|
!!$ j = 0
|
||
|
|
!!$ do k=1, tmpcoo%get_nzeros()
|
||
|
|
!!$ if ((tmpcoo%ia(k) > 0).and.(tmpcoo%ja(k)>0)) then
|
||
|
|
!!$ j = j+1
|
||
|
|
!!$ tmpcoo%ia(j) = tmpcoo%ia(k)
|
||
|
|
!!$ tmpcoo%ja(j) = tmpcoo%ja(k)
|
||
|
|
!!$ tmpcoo%val(j) = tmpcoo%val(k)
|
||
|
|
!!$ end if
|
||
|
|
!!$ end do
|
||
|
|
!!$ call tmpcoo%set_nzeros(j)
|
||
|
|
!!$ end if
|
||
|
|
!!$ call ahalo%mv_from(tmpcoo)
|
||
|
|
!!$ call ahalo%csclip(aout,info,imax=nrow)
|
||
|
|
!!$
|
||
|
|
!!$ else
|
||
|
|
!!$ call psb_sphalo(atmp,desc_a,ahalo,info, rowscale=.true.)
|
||
|
|
!!$ if (debug) write(0,*) me,' Htranspose from sphalo :',ahalo%get_nrows(),ahalo%get_ncols()
|
||
|
|
!!$ if (info == psb_success_) call psb_rwextd(ncol,atmp,info,b=ahalo)
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'ahalo-',me,'.mtx'
|
||
|
|
!!$ call ahalo%print(fname=aname,head='ahalo after haloTest ',iv=ilv)
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atmp-h-',me,'.mtx'
|
||
|
|
!!$ call atmp%print(fname=aname,head='atmp after haloTest ',iv=ilv)
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ if (info == psb_success_) call ahalo%free()
|
||
|
|
!!$
|
||
|
|
!!$ call atmp%cp_to(tmpcoo)
|
||
|
|
!!$ call tmpcoo%transp()
|
||
|
|
!!$ if (debug) write(0,*) 'Before cleanup:',tmpcoo%get_nzeros()
|
||
|
|
!!$ if (.true.) then
|
||
|
|
!!$ call tmpcoo%clean_negidx(info)
|
||
|
|
!!$ else
|
||
|
|
!!$
|
||
|
|
!!$ j = 0
|
||
|
|
!!$ do k=1, tmpcoo%get_nzeros()
|
||
|
|
!!$ if ((tmpcoo%ia(k) > 0).and.(tmpcoo%ja(k)>0)) then
|
||
|
|
!!$ j = j+1
|
||
|
|
!!$ tmpcoo%ia(j) = tmpcoo%ia(k)
|
||
|
|
!!$ tmpcoo%ja(j) = tmpcoo%ja(k)
|
||
|
|
!!$ tmpcoo%val(j) = tmpcoo%val(k)
|
||
|
|
!!$ end if
|
||
|
|
!!$ end do
|
||
|
|
!!$ call tmpcoo%set_nzeros(j)
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) write(0,*) 'After cleanup:',tmpcoo%get_nzeros()
|
||
|
|
!!$
|
||
|
|
!!$ call ahalo%mv_from(tmpcoo)
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ call psb_gather(aglb,ahalo,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atran-preclip.mtx'
|
||
|
|
!!$ call aglb%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$
|
||
|
|
!!$ call ahalo%csclip(aout,info,imax=nrow)
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ if (debug) write(0,*) 'After clip:',aout%get_nzeros()
|
||
|
|
!!$
|
||
|
|
!!$ if (debug_sync) then
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ if (me == 0) write(0,*) 'End htranspose '
|
||
|
|
!!$ end if
|
||
|
|
!!$ !call aout%cscnv(info,type='csr')
|
||
|
|
!!$
|
||
|
|
!!$ if (dump) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atran-',me,'.mtx'
|
||
|
|
!!$ call aout%print(fname=aname,head='atrans ',iv=ilv)
|
||
|
|
!!$ call psb_gather(aglb,aout,desc_a,info)
|
||
|
|
!!$ if (me==psb_root_) then
|
||
|
|
!!$ write(aname,'(a,i3.3,a)') 'atran.mtx'
|
||
|
|
!!$ call aglb%print(fname=aname,head='Test ')
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ end subroutine amg_dhtranspose
|
||
|
|
!!$
|
||
|
|
!!$ subroutine amg_dPMatchBox(nlver,nledge,verlocptr,verlocind,edgelocweight,&
|
||
|
|
!!$ & verdistance, mate, myrank, numprocs, ictxt,&
|
||
|
|
!!$ & msgindsent,msgactualsent,msgpercent,&
|
||
|
|
!!$ & ph0_time, ph1_time, ph2_time, ph1_card, ph2_card,info,display_inp)
|
||
|
|
!!$ use psb_base_mod
|
||
|
|
!!$ implicit none
|
||
|
|
!!$ type(psb_ctxt_type) :: ictxt
|
||
|
|
!!$ integer(psb_c_ipk_), value :: myrank, numprocs
|
||
|
|
!!$ integer(psb_c_lpk_), value :: nlver,nledge
|
||
|
|
!!$ integer(psb_c_lpk_) :: verlocptr(:),verlocind(:), verdistance(:)
|
||
|
|
!!$ integer(psb_c_lpk_) :: mate(:)
|
||
|
|
!!$ integer(psb_c_lpk_) :: msgindsent(*),msgactualsent(*)
|
||
|
|
!!$ real(c_double) :: ph0_time, ph1_time, ph2_time
|
||
|
|
!!$ integer(psb_c_lpk_) :: ph1_card(*),ph2_card(*)
|
||
|
|
!!$ real(c_double) :: edgelocweight(:)
|
||
|
|
!!$ real(c_double) :: msgpercent(*)
|
||
|
|
!!$ integer(psb_ipk_) :: info, me, np
|
||
|
|
!!$ integer(psb_c_mpk_) :: icomm, mrank, mnp
|
||
|
|
!!$ logical, optional :: display_inp
|
||
|
|
!!$ !
|
||
|
|
!!$ logical, parameter :: debug=.false., debug_out=.false., debug_sync=.false., dump_input=.false.
|
||
|
|
!!$ logical :: display_
|
||
|
|
!!$ integer(psb_lpk_) :: i,k
|
||
|
|
!!$ integer(psb_ipk_), save :: cnt=1
|
||
|
|
!!$
|
||
|
|
!!$ call psb_info(ictxt,me,np)
|
||
|
|
!!$ icomm = psb_get_mpi_comm(ictxt)
|
||
|
|
!!$ mrank = psb_get_mpi_rank(ictxt,me)
|
||
|
|
!!$ mnp = np
|
||
|
|
!!$ if (present(display_inp)) then
|
||
|
|
!!$ display_ = display_inp
|
||
|
|
!!$ else
|
||
|
|
!!$ display_ = .false.
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ verlocptr(:) = verlocptr(:) - 1
|
||
|
|
!!$ verlocind(:) = verlocind(:) - 1
|
||
|
|
!!$ verdistance(:) = verdistance(:) -1
|
||
|
|
!!$
|
||
|
|
!!$ if (dump_input) then
|
||
|
|
!!$ block
|
||
|
|
!!$ integer(psb_ipk_) :: iout=20,info,i,j,k,nr
|
||
|
|
!!$ character(len=80) :: fname
|
||
|
|
!!$ write(fname,'(a,i4.4,a,i4.4,a)') 'verlocptr-l',cnt,'-i',me,'.mtx'
|
||
|
|
!!$ open(iout,file=fname,iostat=info)
|
||
|
|
!!$ if (info == 0) then
|
||
|
|
!!$ write(iout,'(a)') '%verlocptr '
|
||
|
|
!!$ write(iout,*) nlver
|
||
|
|
!!$ do i=1, nlver+1
|
||
|
|
!!$ write(iout,*) verlocptr(i)
|
||
|
|
!!$ end do
|
||
|
|
!!$ close(iout)
|
||
|
|
!!$ else
|
||
|
|
!!$ write(psb_err_unit,*) 'Error: could not open ',fname,' for output'
|
||
|
|
!!$ end if
|
||
|
|
!!$ write(fname,'(a,i4.4,a,i4.4,a)') 'edges-l',cnt,'-i',me,'.mtx'
|
||
|
|
!!$ open(iout,file=fname,iostat=info)
|
||
|
|
!!$ if (info == 0) then
|
||
|
|
!!$ write(iout,'(a)') '%verlocind/edgeweight '
|
||
|
|
!!$ write(iout,*) nlver
|
||
|
|
!!$ do i=1, nlver
|
||
|
|
!!$ do j=verlocptr(i)+1,verlocptr(i+1)
|
||
|
|
!!$ write(iout,*) i-1, verlocind(j),edgelocweight(j)
|
||
|
|
!!$ end do
|
||
|
|
!!$ end do
|
||
|
|
!!$ close(iout)
|
||
|
|
!!$ else
|
||
|
|
!!$ write(psb_err_unit,*) 'Error: could not open ',fname,' for output'
|
||
|
|
!!$ end if
|
||
|
|
!!$ if (me==0) then
|
||
|
|
!!$ write(fname,'(a,i4.4,a,i4.4,a)') 'verdistance-l',cnt,'-i',me,'.mtx'
|
||
|
|
!!$ open(iout,file=fname,iostat=info)
|
||
|
|
!!$ if (info == 0) then
|
||
|
|
!!$ write(iout,'(a)') '%verdistance'
|
||
|
|
!!$ write(iout,*) np
|
||
|
|
!!$ do i=1, np+1
|
||
|
|
!!$ write(iout,*) verdistance(i)
|
||
|
|
!!$ end do
|
||
|
|
!!$ close(iout)
|
||
|
|
!!$ else
|
||
|
|
!!$ write(psb_err_unit,*) 'Error: could not open ',fname,' for output'
|
||
|
|
!!$ end if
|
||
|
|
!!$ end if
|
||
|
|
!!$ end block
|
||
|
|
!!$ cnt = cnt + 1
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ if (debug.or.display_) then
|
||
|
|
!!$ do i=0,np-1
|
||
|
|
!!$ if (me == i) then
|
||
|
|
!!$ write(6,*) 'Process: ',me,' : Input into matching: nlver ',nlver,' nledge ',nledge
|
||
|
|
!!$ write(6,*) 'Process: ',me,' : VERDISTANCE 0-base : ',verdistance(1:np+1)
|
||
|
|
!!$ write(6,*) 'Process: ',me,' : VERLOCPTR 0-base : ',verlocptr(1:nlver+1)
|
||
|
|
!!$ write(6,*) 'Process: ',me,' : VERLOCIND 0-base : ',verlocind(1:nledge)
|
||
|
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!!$ write(6,*) 'Process: ',me,' : EDGELOCWEIGHT : ',edgelocweight(1:nledge)
|
||
|
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!!$ write(6,*) 'Process: ',me,' : Initial MATE : ',mate(1:nlver)
|
||
|
|
!!$ flush(6)
|
||
|
|
!!$ end if
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ end do
|
||
|
|
!!$ end if
|
||
|
|
!!$ if (debug_sync) then
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ if (me == 0) write(0,*)' Calling Decmatch '
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ call DecmatchC(nlver,nledge,verlocptr,verlocind,edgelocweight,&
|
||
|
|
!!$ & verdistance, mate, mrank, mnp, icomm,&
|
||
|
|
!!$ & msgindsent,msgactualsent,msgpercent,&
|
||
|
|
!!$ & ph0_time, ph1_time, ph2_time, ph1_card, ph2_card)
|
||
|
|
!!$ verlocptr(:) = verlocptr(:) + 1
|
||
|
|
!!$ verlocind(:) = verlocind(:) + 1
|
||
|
|
!!$ verdistance(:) = verdistance(:) + 1
|
||
|
|
!!$
|
||
|
|
!!$ if (debug_sync) then
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ if (me == 0) write(0,*)' Done Decmatch '
|
||
|
|
!!$ end if
|
||
|
|
!!$
|
||
|
|
!!$ if (debug_out) then
|
||
|
|
!!$ do k=0,np-1
|
||
|
|
!!$ if (me == k) then
|
||
|
|
!!$ write(6,*) 'Process: ',me,' : from Matching (0-base): ',info
|
||
|
|
!!$ do i=1,nlver
|
||
|
|
!!$ write(6,*) '(',i,',',mate(i),')'
|
||
|
|
!!$ !mate(i) = mate(i) +1
|
||
|
|
!!$ !
|
||
|
|
!!$ end do
|
||
|
|
!!$ flush(6)
|
||
|
|
!!$ end if
|
||
|
|
!!$ call psb_barrier(ictxt)
|
||
|
|
!!$ end do
|
||
|
|
!!$ end if
|
||
|
|
!!$ where(mate>=0) mate = mate + 1
|
||
|
|
!!$
|
||
|
|
!!$ end subroutine amg_dPMatchBox
|
||
|
|
|
||
|
|
end module amg_d_decmatch_mod
|