Factored symmetrization of del_list into its own routine.
Salvatore Filippone
5 years ago
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fc90423305
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!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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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 PSBLAS 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 PSBLAS 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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!
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!
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! File: psi_fnd_owner.f90
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!
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! Subroutine: psi_fnd_owner
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! Figure out who owns global indices.
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!
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! Arguments:
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!
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subroutine psi_symm_dep_list(rvsz,adj,idxmap,info,flag)
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use psb_serial_mod
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use psb_const_mod
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use psb_error_mod
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use psb_penv_mod
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use psb_realloc_mod
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use psb_indx_map_mod, psb_protect_name => psi_symm_dep_list
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#ifdef MPI_MOD
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use mpi
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#endif
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implicit none
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#ifdef MPI_H
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include 'mpif.h'
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#endif
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integer(psb_mpk_), intent(inout) :: rvsz(0:)
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integer(psb_ipk_), allocatable, intent(inout) :: adj(:)
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class(psb_indx_map), intent(in) :: idxmap
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: flag
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!
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integer(psb_ipk_), allocatable :: ladj(:)
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integer(psb_mpk_), allocatable :: sdsz(:)
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integer(psb_mpk_) :: icomm, minfo, iictxt
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integer(psb_ipk_) :: i,n_row,n_col,err_act,hsize,ip,&
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& last_ih, last_j, nidx, nrecv, nadj, flag_
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integer(psb_lpk_) :: mglob, ih
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integer(psb_ipk_) :: ictxt,np,me
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character(len=20) :: name
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info = psb_success_
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name = 'psi_symm_dep_list'
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call psb_erractionsave(err_act)
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ictxt = idxmap%get_ctxt()
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icomm = idxmap%get_mpic()
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mglob = idxmap%get_gr()
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n_row = idxmap%get_lr()
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n_col = idxmap%get_lc()
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iictxt = ictxt
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.(idxmap%is_valid())) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='invalid idxmap')
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goto 9999
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end if
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nadj = size(adj)
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if (size(rvsz)<np) then
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call psb_errpush(psb_err_from_subroutine_,name,a_err='invalid rvsz')
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goto 9999
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end if
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if (present(flag)) then
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flag_ = flag
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else
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flag_ = psi_symm_flag_norv_
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end if
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select case(flag_)
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case(psi_symm_flag_norv_, psi_symm_flag_inrv_)
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! Ok, keep going
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case default
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call psb_errpush(psb_err_from_subroutine_,name,a_err='invalid flag')
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goto 9999
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end select
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if (flag_ == psi_symm_norv_) then
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! write(0,*) me,name,' Going through ',nidx,nadj
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Allocate(sdsz(0:np-1), stat=info)
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!
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! First, send sizes according to adjcncy list
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!
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sdsz = 0
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do j=1, nadj
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sdsz(adj(j)) = 1
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end do
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!write(0,*)me,' Check on sizes into a2a:',adj(:),nadj,':',sdsz(:)
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call mpi_alltoall(sdsz,1,psb_mpi_mpk_,&
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& rvsz,1,psb_mpi_mpk_,icomm,minfo)
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end if
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nrecv = 0
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do ip=0, np-1
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if (rvsz(ip) > 0) nrecv = nrecv + 1
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end do
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!
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! Now fix adj to be symmetric
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!
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call psb_realloc(nadj+nrecv,ladj,info)
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ladj(1:nadj) = adj(1:nadj)
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do ip=0, np-1
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if (rvsz(ip)>0) then
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nadj = nadj + 1
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ladj(nadj+1:nadj+nrecv) = ip
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end if
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end do
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call psb_msort_unique(ladj,nadj)
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call psb_realloc(nadj,adj,info)
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adj(1:nadj) = ladj(1:nadj)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ictxt,err_act)
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return
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end subroutine psi_symm_dep_list
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