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157 lines
5.1 KiB
Fortran
157 lines
5.1 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.4
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! (C) Copyright 2006, 2010, 2015
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! Salvatore Filippone University of Rome Tor Vergata
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! Alfredo Buttari CNRS-IRIT, Toulouse
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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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! File: psb_sspgather.f90
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subroutine psb_ssp_allgather(globa, loca, desc_a, info, root, dupl,keepnum,keeploc)
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use psb_desc_mod
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use psb_error_mod
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use psb_penv_mod
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use psb_mat_mod
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use psb_tools_mod
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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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type(psb_sspmat_type), intent(inout) :: loca
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type(psb_sspmat_type), intent(inout) :: globa
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: root, dupl
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logical, intent(in), optional :: keepnum,keeploc
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type(psb_s_coo_sparse_mat) :: loc_coo, glob_coo
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integer(psb_ipk_) :: err_act, dupl_, nrg, ncg, nzg
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integer(psb_ipk_) :: ip,naggrm1,naggrp1, i, j, k, nzl
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logical :: keepnum_, keeploc_
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integer(psb_mpik_) :: ictxt,np,me
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integer(psb_mpik_) :: icomm, minfo, ndx
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integer(psb_mpik_), allocatable :: nzbr(:), idisp(:)
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integer(psb_ipk_) :: ierr(5)
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character(len=20) :: name
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integer(psb_ipk_) :: debug_level, debug_unit
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name='psb_gather'
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if (psb_get_errstatus().ne.0) return
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info=psb_success_
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call psb_erractionsave(err_act)
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ictxt = desc_a%get_context()
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icomm = desc_a%get_mpic()
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call psb_info(ictxt, me, np)
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if (present(keepnum)) then
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keepnum_ = keepnum
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else
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keepnum_ = .true.
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end if
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if (present(keeploc)) then
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keeploc_ = keeploc
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else
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keeploc_ = .true.
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end if
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call globa%free()
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if (keepnum_) then
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nrg = desc_a%get_global_rows()
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ncg = desc_a%get_global_rows()
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allocate(nzbr(np), idisp(np),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_
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ierr(1) = 2*np
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call psb_errpush(info,name,i_err=ierr,a_err='integer')
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goto 9999
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end if
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if (keeploc_) then
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call loca%cp_to(loc_coo)
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else
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call loca%mv_to(loc_coo)
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end if
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nzl = loc_coo%get_nzeros()
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call psb_loc_to_glob(loc_coo%ia(1:nzl),desc_a,info,iact='I')
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call psb_loc_to_glob(loc_coo%ja(1:nzl),desc_a,info,iact='I')
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nzbr(:) = 0
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nzbr(me+1) = nzl
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call psb_sum(ictxt,nzbr(1:np))
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nzg = sum(nzbr)
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if (info == psb_success_) call glob_coo%allocate(nrg,ncg,nzg)
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if (info /= psb_success_) goto 9999
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do ip=1,np
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idisp(ip) = sum(nzbr(1:ip-1))
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enddo
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ndx = nzbr(me+1)
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call mpi_allgatherv(loc_coo%val,ndx,psb_mpi_r_spk_,&
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& glob_coo%val,nzbr,idisp,&
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& psb_mpi_r_spk_,icomm,minfo)
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if (minfo == psb_success_) call &
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& mpi_allgatherv(loc_coo%ia,ndx,psb_mpi_ipk_integer,&
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& glob_coo%ia,nzbr,idisp,&
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& psb_mpi_ipk_integer,icomm,minfo)
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if (minfo == psb_success_) call &
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& mpi_allgatherv(loc_coo%ja,ndx,psb_mpi_ipk_integer,&
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& glob_coo%ja,nzbr,idisp,&
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& psb_mpi_ipk_integer,icomm,minfo)
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if (minfo /= psb_success_) then
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info = minfo
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call psb_errpush(psb_err_internal_error_,name,a_err=' from mpi_allgatherv')
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goto 9999
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end if
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call loc_coo%free()
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call glob_coo%set_nzeros(nzg)
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if (present(dupl)) call glob_coo%set_dupl(dupl)
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call globa%mv_from(glob_coo)
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else
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write(psb_err_unit,*) 'SP_ALLGATHER: Not implemented yet with keepnum ',keepnum_
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info = -1
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_errpush(info,name)
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call psb_error_handler(ione*ictxt,err_act)
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return
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end subroutine psb_ssp_allgather
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