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376 lines
12 KiB
Fortran
376 lines
12 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS version 2.2
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!!$ (C) Copyright 2006/2007/2008
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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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_dsphalo.f90
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!
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! Subroutine: psb_dsphalo
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! This routine does the retrieval of remote matrix rows.
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! Note that retrieval is done through GTBLK, therefore it should work
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! for any matrix format in A; as for the output, default is CSR.
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!
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!
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! Arguments:
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! a - type(psb_dspmat_type) The local part of input matrix A
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! desc_a - type(psb_desc_type). The communication descriptor.
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! blck - type(psb_dspmat_type) The local part of output matrix BLCK
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! info - integer. Return code
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! rowcnv - logical Should row/col indices be converted
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! colcnv - logical to/from global numbering when sent/received?
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! default is .TRUE.
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! rowscale - logical Should row/col indices on output be remapped
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! colscale - logical from MIN:MAX to 1:(MAX-MIN+1) ?
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! default is .FALSE.
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! (commmon use is ROWSCALE=.TRUE., COLSCALE=.FALSE.)
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! data - integer Which index list in desc_a should be used to retrieve
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! rows, default psb_comm_halo_
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! psb_comm_halo_ use halo_index
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! psb_comm_ext_ use ext_index
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! psb_comm_ovrl_ DISABLED for this routine.
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!
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!
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Subroutine psb_dsphalo(a,desc_a,blk,info,rowcnv,colcnv,&
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& rowscale,colscale,outfmt,data)
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use psb_sparse_mod, psb_protect_name => psb_dsphalo
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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_d_sparse_mat),intent(in) :: a
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type(psb_d_sparse_mat),intent(inout) :: blk
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type(psb_desc_type),intent(in), target :: desc_a
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integer, intent(out) :: info
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logical, optional, intent(in) :: rowcnv,colcnv,rowscale,colscale
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character(len=5), optional :: outfmt
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integer, intent(in), optional :: data
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! ...local scalars....
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Integer :: np,me,counter,proc,i, &
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& n_el_send,k,n_el_recv,ictxt, idx, r, tot_elem,&
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& n_elem, j, ipx,mat_recv, iszs, iszr,idxs,idxr,nz,&
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& irmin,icmin,irmax,icmax,data_,ngtz
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Integer :: l1, icomm, err_act
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Integer, allocatable :: sdid(:,:), brvindx(:),rvid(:,:), &
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& rvsz(:), bsdindx(:),sdsz(:), iasnd(:), jasnd(:)
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real(psb_dpk_), allocatable :: valsnd(:)
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type(psb_d_coo_sparse_mat), allocatable :: acoo
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integer, pointer :: idxv(:)
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logical :: rowcnv_,colcnv_,rowscale_,colscale_
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character(len=5) :: outfmt_
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integer :: debug_level, debug_unit
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character(len=20) :: name, ch_err
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if(psb_get_errstatus() /= 0) return
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info=psb_success_
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name='psb_dsphalo'
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call psb_erractionsave(err_act)
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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if (debug_level >= psb_debug_outer_) &
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& write(debug_unit,*) me,' ',trim(name),': Start'
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if (present(rowcnv)) then
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rowcnv_ = rowcnv
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else
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rowcnv_ = .true.
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endif
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if (present(colcnv)) then
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colcnv_ = colcnv
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else
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colcnv_ = .true.
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endif
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if (present(rowscale)) then
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rowscale_ = rowscale
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else
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rowscale_ = .false.
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endif
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if (present(colscale)) then
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colscale_ = colscale
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else
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colscale_ = .false.
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endif
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if (present(data)) then
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data_ = data
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else
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data_ = psb_comm_halo_
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endif
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if (present(outfmt)) then
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outfmt_ = psb_toupper(outfmt)
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else
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outfmt_ = 'CSR'
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endif
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ictxt = psb_cd_get_context(desc_a)
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icomm = psb_cd_get_mpic(desc_a)
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Call psb_info(ictxt, me, np)
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Allocate(sdid(np,3),rvid(np,3),brvindx(np+1),&
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& rvsz(np),sdsz(np),bsdindx(np+1), acoo,stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_dealloc_
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call psb_errpush(info,name)
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goto 9999
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end if
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If (debug_level >= psb_debug_outer_)&
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& write(debug_unit,*) me,' ',trim(name),': Data selector',data_
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select case(data_)
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case(psb_comm_halo_)
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idxv => desc_a%halo_index
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case(psb_comm_ext_)
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idxv => desc_a%ext_index
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! !$ case(psb_comm_ovr_)
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! !$ idxv => desc_a%ovrlap_index
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! Do not accept OVRLAP_INDEX any longer.
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case default
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call psb_errpush(psb_err_from_subroutine_,name,a_err='wrong Data selector')
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goto 9999
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end select
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l1 = 0
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sdsz(:)=0
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rvsz(:)=0
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ipx = 1
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brvindx(ipx) = 0
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bsdindx(ipx) = 0
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counter=1
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idx = 0
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idxs = 0
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idxr = 0
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call acoo%allocate(0,a%get_ncols(),info)
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! For all rows in the halo descriptor, extract and send/receive.
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Do
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proc=idxv(counter)
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if (proc == -1) exit
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n_el_recv = idxv(counter+psb_n_elem_recv_)
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counter = counter+n_el_recv
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n_el_send = idxv(counter+psb_n_elem_send_)
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tot_elem = 0
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Do j=0,n_el_send-1
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idx = idxv(counter+psb_elem_send_+j)
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n_elem = a%get_nz_row(idx)
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tot_elem = tot_elem+n_elem
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Enddo
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sdsz(proc+1) = tot_elem
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call acoo%set_nrows(acoo%get_nrows() + n_el_recv)
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counter = counter+n_el_send+3
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Enddo
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call mpi_alltoall(sdsz,1,mpi_integer,rvsz,1,mpi_integer,icomm,info)
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='mpi_alltoall'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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idxs = 0
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idxr = 0
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counter = 1
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Do
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proc=idxv(counter)
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if (proc == -1) exit
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n_el_recv = idxv(counter+psb_n_elem_recv_)
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counter = counter+n_el_recv
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n_el_send = idxv(counter+psb_n_elem_send_)
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bsdindx(proc+1) = idxs
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idxs = idxs + sdsz(proc+1)
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brvindx(proc+1) = idxr
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idxr = idxr + rvsz(proc+1)
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counter = counter+n_el_send+3
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Enddo
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iszr=sum(rvsz)
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call acoo%reallocate(max(iszr,1))
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if (debug_level >= psb_debug_outer_)&
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& write(debug_unit,*) me,' ',trim(name),': Sizes:',acoo%get_size(),&
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& ' Send:',sdsz(:),' Receive:',rvsz(:)
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_sp_reall'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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mat_recv = iszr
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iszs=sum(sdsz)
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call psb_ensure_size(max(iszs,1),iasnd,info)
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if (info == psb_success_) call psb_ensure_size(max(iszs,1),jasnd,info)
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if (info == psb_success_) call psb_ensure_size(max(iszs,1),valsnd,info)
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l1 = 0
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ipx = 1
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counter=1
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idx = 0
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tot_elem=0
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Do
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proc=idxv(counter)
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if (proc == -1) exit
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n_el_recv=idxv(counter+psb_n_elem_recv_)
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counter=counter+n_el_recv
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n_el_send=idxv(counter+psb_n_elem_send_)
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Do j=0,n_el_send-1
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idx = idxv(counter+psb_elem_send_+j)
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n_elem = a%get_nz_row(idx)
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call a%csget(idx,idx,ngtz,iasnd,jasnd,valsnd,info,&
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& append=.true.,nzin=tot_elem)
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_sp_getrow'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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tot_elem=tot_elem+n_elem
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Enddo
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ipx = ipx + 1
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counter = counter+n_el_send+3
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Enddo
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nz = tot_elem
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if (rowcnv_) call psb_loc_to_glob(iasnd(1:nz),desc_a,info,iact='I')
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if (colcnv_) call psb_loc_to_glob(jasnd(1:nz),desc_a,info,iact='I')
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_loc_to_glob'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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call mpi_alltoallv(valsnd,sdsz,bsdindx,mpi_double_precision,&
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& acoo%val,rvsz,brvindx,mpi_double_precision,icomm,info)
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call mpi_alltoallv(iasnd,sdsz,bsdindx,mpi_integer,&
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& acoo%ia,rvsz,brvindx,mpi_integer,icomm,info)
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call mpi_alltoallv(jasnd,sdsz,bsdindx,mpi_integer,&
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& acoo%ja,rvsz,brvindx,mpi_integer,icomm,info)
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='mpi_alltoallv'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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!
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! Convert into local numbering
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!
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if (rowcnv_) call psb_glob_to_loc(acoo%ia(1:iszr),desc_a,info,iact='I')
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if (colcnv_) call psb_glob_to_loc(acoo%ja(1:iszr),desc_a,info,iact='I')
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psbglob_to_loc'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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l1 = 0
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call acoo%set_nrows(0)
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!
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irmin = huge(irmin)
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icmin = huge(icmin)
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irmax = 0
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icmax = 0
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Do i=1,iszr
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r=(acoo%ia(i))
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k=(acoo%ja(i))
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! Just in case some of the conversions were out-of-range
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If ((r>0).and.(k>0)) Then
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l1=l1+1
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acoo%val(l1) = acoo%val(i)
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acoo%ia(l1) = r
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acoo%ja(l1) = k
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irmin = min(irmin,r)
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irmax = max(irmax,r)
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icmin = min(icmin,k)
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icmax = max(icmax,k)
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End If
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Enddo
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if (rowscale_) then
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call acoo%set_nrows(max(irmax-irmin+1,0))
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acoo%ia(1:l1) = acoo%ia(1:l1) - irmin + 1
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else
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call acoo%set_nrows(irmax)
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end if
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if (colscale_) then
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call acoo%set_ncols(max(icmax-icmin+1,0))
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acoo%ja(1:l1) = acoo%ja(1:l1) - icmin + 1
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else
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call acoo%set_ncols(icmax)
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end if
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call acoo%set_nzeros(l1)
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if (debug_level >= psb_debug_outer_)&
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& write(debug_unit,*) me,' ',trim(name),&
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& ': End data exchange',counter,l1
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call move_alloc(acoo,blk%a)
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! Do we expect any duplicates to appear????
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call blk%cscnv(info,type=outfmt_,dupl=psb_dupl_add_)
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_spcnv'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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Deallocate(sdid,brvindx,rvid,bsdindx,rvsz,sdsz,&
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& iasnd,jasnd,valsnd,stat=info)
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if (debug_level >= psb_debug_outer_)&
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& write(debug_unit,*) me,' ',trim(name),': Done'
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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_erractionrestore(err_act)
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if (err_act == psb_act_abort_) then
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call psb_error(ictxt)
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return
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end if
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return
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End Subroutine psb_dsphalo
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