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481 lines
15 KiB
Fortran
481 lines
15 KiB
Fortran
6 years ago
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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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! File: psb_cscatter.f90
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!
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! Subroutine: psb_cscatterm
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! This subroutine scatters a global matrix locally owned by one process
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! into pieces that are local to alle the processes.
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!
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! Arguments:
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! globx - complex,dimension(:,:). The global matrix to scatter.
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! locx - complex,dimension(:,:). The local piece of the distributed matrix.
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Error code.
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! iroot - integer(optional). The process that owns the global matrix.
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! If -1 all the processes have a copy.
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! Default -1
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subroutine psb_cscatterm(globx, locx, desc_a, info, root)
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use psb_base_mod, psb_protect_name => psb_cscatterm
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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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complex(psb_spk_), intent(out), allocatable :: locx(:,:)
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complex(psb_spk_), intent(in) :: globx(:,:)
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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
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! locals
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integer(psb_mpk_) :: ictxt, np, me, iroot, icomm, myrank, rootrank, iam, nlr
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integer(psb_ipk_) :: ierr(5), err_act, nrow,&
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& ilocx, jlocx, lda_locx, lda_globx, lock, globk, k, maxk, &
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& col,pos
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integer(psb_lpk_) :: m, n, i, j, idx, iglobx, jglobx
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complex(psb_spk_),allocatable :: scatterv(:)
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integer(psb_mpk_), allocatable :: displ(:), all_dim(:)
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integer(psb_lpk_), allocatable :: l_t_g_all(:), ltg(:)
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character(len=20) :: name, ch_err
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name='psb_scatterm'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ictxt=desc_a%get_context()
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! check on blacs grid
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call psb_info(ictxt, iam, 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 (present(root)) then
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iroot = root
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if((iroot < -1).or.(iroot >= np)) then
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info=psb_err_input_value_invalid_i_
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ierr(1)=5; ierr(2)=iroot
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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else
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iroot = psb_root_
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end if
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iglobx = 1
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jglobx = 1
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lda_globx = size(globx,1)
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m = desc_a%get_global_rows()
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n = desc_a%get_global_cols()
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call psb_get_mpicomm(ictxt,icomm)
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call psb_get_rank(myrank,ictxt,me)
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if (iroot==-1) then
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lda_globx = size(globx, 1)
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k = size(globx,2)
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else
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if (iam==iroot) then
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k = size(globx,2)
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lda_globx = size(globx, 1)
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end if
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end if
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m = desc_a%get_global_rows()
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n = desc_a%get_global_cols()
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! there should be a global check on k here!!!
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if ((iroot==-1).or.(iam==iroot)) &
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& call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,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='psb_chk(glob)vect'
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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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nrow=desc_a%get_local_rows()
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! root has to gather size information
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allocate(displ(np),all_dim(np),ltg(nrow),stat=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='Allocate'
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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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do i=1, nrow
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ltg(i) = i
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end do
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call psb_loc_to_glob(ltg(1:nrow),desc_a,info)
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call psb_geall(locx,desc_a,info,n=k)
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if ((iroot == -1).or.(np == 1)) then
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! extract my chunk
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do j=1,k
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do i=1, nrow
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locx(i,j)=globx(ltg(i),j)
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end do
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end do
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else
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call psb_get_rank(rootrank,ictxt,iroot)
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!
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! This is potentially unsafe when IPK=8
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! But then, IPK=8 is highly experimental anyway.
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!
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nlr = nrow
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call mpi_gather(nlr,1,psb_mpi_mpk_,all_dim,&
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& 1,psb_mpi_mpk_,rootrank,icomm,info)
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if (iam == iroot) then
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displ(1)=0
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do i=2,np
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displ(i)=displ(i-1)+all_dim(i-1)
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end do
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! root has to gather loc_glob from each process
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allocate(l_t_g_all(sum(all_dim)),scatterv(sum(all_dim)),stat=info)
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else
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!
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! This is to keep debugging compilers from being upset by
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! calling an external MPI function with an unallocated array;
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! the Fortran side would complain even if the MPI side does
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! not use the unallocated stuff.
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!
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allocate(l_t_g_all(1),scatterv(1),stat=info)
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end if
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='Allocate'
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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_gatherv(ltg,nlr,&
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& psb_mpi_lpk_,l_t_g_all,all_dim,&
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& displ,psb_mpi_lpk_,rootrank,icomm,info)
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do col=1, k
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! prepare vector to scatter
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if(iam == iroot) then
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do i=1,np
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pos=displ(i)
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do j=1, all_dim(i)
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idx=l_t_g_all(pos+j)
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scatterv(pos+j)=globx(idx,col)
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end do
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end do
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end if
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! scatter
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call mpi_scatterv(scatterv,all_dim,displ,&
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& psb_mpi_c_spk_,locx(1,col),nrow,&
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& psb_mpi_c_spk_,rootrank,icomm,info)
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end do
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deallocate(l_t_g_all, scatterv,stat=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='deallocate'
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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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end if
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deallocate(all_dim, displ, ltg,stat=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='deallocate'
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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 psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ione*ictxt,err_act)
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return
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end subroutine psb_cscatterm
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!!$
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!!$ Parallel Sparse BLAS version 3.5
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|
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!!$ (C) Copyright 2006-2018
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|
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!!$ Salvatore Filippone University of Rome Tor Vergata
|
||
|
|
!!$ Alfredo Buttari
|
||
|
|
!!$
|
||
|
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!!$ Redistribution and use in source and binary forms, with or without
|
||
|
|
!!$ modification, are permitted provided that the following conditions
|
||
|
|
!!$ are met:
|
||
|
|
!!$ 1. Redistributions of source code must retain the above copyright
|
||
|
|
!!$ notice, this list of conditions and the following disclaimer.
|
||
|
|
!!$ 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
!!$ notice, this list of conditions, and the following disclaimer in the
|
||
|
|
!!$ documentation and/or other materials provided with the distribution.
|
||
|
|
!!$ 3. The name of the PSBLAS group or the names of its contributors may
|
||
|
|
!!$ not be used to endorse or promote products derived from this
|
||
|
|
!!$ software without specific written permission.
|
||
|
|
!!$
|
||
|
|
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||
|
|
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||
|
|
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
|
||
|
|
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
|
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
|
|
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
|
|
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
|
|
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
|
|
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
!!$ POSSIBILITY OF SUCH DAMAGE.
|
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|
|
!!$
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!!$
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! Subroutine: psb_cscatterv
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! This subroutine scatters a global vector locally owned by one process
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! into pieces that are local to alle the processes.
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|
|
!
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! Arguments:
|
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|
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! globx - complex,dimension(:). The global vector to scatter.
|
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|
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! locx - complex,dimension(:). The local piece of the ditributed vector.
|
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! desc_a - type(psb_desc_type). The communication descriptor.
|
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! info - integer. Return code
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! iroot - integer(optional). The process that owns the global vector. If -1 all
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! the processes have a copy.
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!
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subroutine psb_cscatterv(globx, locx, desc_a, info, root)
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use psb_base_mod, psb_protect_name => psb_cscatterv
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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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complex(psb_spk_), intent(out), allocatable :: locx(:)
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complex(psb_spk_), intent(in) :: globx(:)
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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
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! locals
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integer(psb_mpk_) :: ictxt, np, iam, iroot, iiroot, icomm, myrank, rootrank, nlr
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integer(psb_ipk_) :: ierr(5), err_act, nrow,&
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& ilocx, jlocx, lda_locx, lda_globx, k, pos, ilx, jlx
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integer(psb_lpk_) :: m, n, i, j, idx, iglobx, jglobx
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complex(psb_spk_), allocatable :: scatterv(:)
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integer(psb_mpk_), allocatable :: displ(:), all_dim(:)
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integer(psb_lpk_), allocatable :: l_t_g_all(:), ltg(:)
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character(len=20) :: name, ch_err
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integer(psb_ipk_) :: debug_level, debug_unit
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name='psb_scatterv'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ictxt=desc_a%get_context()
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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! check on blacs grid
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call psb_info(ictxt, iam, 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 (present(root)) then
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iroot = root
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if((iroot < -1).or.(iroot > np)) then
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info=psb_err_input_value_invalid_i_
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ierr(1) = 5; ierr(2)=iroot
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end if
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else
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iroot = psb_root_
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||
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|
end if
|
||
|
|
|
||
|
|
call psb_get_mpicomm(ictxt,icomm)
|
||
|
|
call psb_get_rank(myrank,ictxt,iam)
|
||
|
|
|
||
|
|
iglobx = 1
|
||
|
|
jglobx = 1
|
||
|
|
ilocx = 1
|
||
|
|
jlocx = 1
|
||
|
|
if ((iroot==-1).or.(iam==iroot))&
|
||
|
|
& lda_globx = size(globx, 1)
|
||
|
|
|
||
|
|
|
||
|
|
m = desc_a%get_global_rows()
|
||
|
|
n = desc_a%get_global_cols()
|
||
|
|
|
||
|
|
k = 1
|
||
|
|
! there should be a global check on k here!!!
|
||
|
|
if ((iroot==-1).or.(iam==iroot)) &
|
||
|
|
& call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info)
|
||
|
|
|
||
|
|
if(info /= psb_success_) then
|
||
|
|
info=psb_err_from_subroutine_
|
||
|
|
ch_err='psb_chk(glob)vect'
|
||
|
|
call psb_errpush(info,name,a_err=ch_err)
|
||
|
|
goto 9999
|
||
|
|
end if
|
||
|
|
|
||
|
|
nrow = desc_a%get_local_rows()
|
||
|
|
allocate(displ(np),all_dim(np),ltg(nrow),stat=info)
|
||
|
|
if(info /= psb_success_) then
|
||
|
|
info=psb_err_from_subroutine_
|
||
|
|
ch_err='Allocate'
|
||
|
|
call psb_errpush(info,name,a_err=ch_err)
|
||
|
|
goto 9999
|
||
|
|
end if
|
||
|
|
|
||
|
|
do i=1, nrow
|
||
|
|
ltg(i) = i
|
||
|
|
end do
|
||
|
|
call psb_loc_to_glob(ltg(1:nrow),desc_a,info)
|
||
|
|
call psb_geall(locx,desc_a,info)
|
||
|
|
|
||
|
|
if ((iroot == -1).or.(np == 1)) then
|
||
|
|
! extract my chunk
|
||
|
|
do i=1, nrow
|
||
|
|
locx(i)=globx(ltg(i))
|
||
|
|
end do
|
||
|
|
else
|
||
|
|
call psb_get_rank(rootrank,ictxt,iroot)
|
||
|
|
!
|
||
|
|
! This is potentially unsafe when IPK=8
|
||
|
|
! But then, IPK=8 is highly experimental anyway.
|
||
|
|
!
|
||
|
|
nlr = nrow
|
||
|
|
call mpi_gather(nlr,1,psb_mpi_mpk_,all_dim,&
|
||
|
|
& 1,psb_mpi_mpk_,rootrank,icomm,info)
|
||
|
|
|
||
|
|
if(iam == iroot) then
|
||
|
|
displ(1)=0
|
||
|
|
do i=2,np
|
||
|
|
displ(i)=displ(i-1) + all_dim(i-1)
|
||
|
|
end do
|
||
|
|
if (debug_level >= psb_debug_inner_) then
|
||
|
|
write(debug_unit,*) iam,' ',trim(name),' displ:',displ(1:np), &
|
||
|
|
&' dim',all_dim(1:np), sum(all_dim)
|
||
|
|
endif
|
||
|
|
|
||
|
|
! root has to gather loc_glob from each process
|
||
|
|
allocate(l_t_g_all(sum(all_dim)),scatterv(sum(all_dim)),stat=info)
|
||
|
|
|
||
|
|
else
|
||
|
|
!
|
||
|
|
! This is to keep debugging compilers from being upset by
|
||
|
|
! calling an external MPI function with an unallocated array;
|
||
|
|
! the Fortran side would complain even if the MPI side does
|
||
|
|
! not use the unallocated stuff.
|
||
|
|
!
|
||
|
|
allocate(l_t_g_all(1),scatterv(1),stat=info)
|
||
|
|
end if
|
||
|
|
if(info /= psb_success_) then
|
||
|
|
info=psb_err_from_subroutine_
|
||
|
|
ch_err='Allocate'
|
||
|
|
call psb_errpush(info,name,a_err=ch_err)
|
||
|
|
goto 9999
|
||
|
|
end if
|
||
|
|
|
||
|
|
call mpi_gatherv(ltg,nlr,&
|
||
|
|
& psb_mpi_lpk_,l_t_g_all,all_dim,&
|
||
|
|
& displ,psb_mpi_lpk_,rootrank,icomm,info)
|
||
|
|
|
||
|
|
! prepare vector to scatter
|
||
|
|
if (iam == iroot) then
|
||
|
|
do i=1,np
|
||
|
|
pos=displ(i)
|
||
|
|
do j=1, all_dim(i)
|
||
|
|
idx=l_t_g_all(pos+j)
|
||
|
|
scatterv(pos+j)=globx(idx)
|
||
|
|
|
||
|
|
end do
|
||
|
|
end do
|
||
|
|
end if
|
||
|
|
|
||
|
|
call mpi_scatterv(scatterv,all_dim,displ,&
|
||
|
|
& psb_mpi_c_spk_,locx,nrow,&
|
||
|
|
& psb_mpi_c_spk_,rootrank,icomm,info)
|
||
|
|
|
||
|
|
deallocate(l_t_g_all, scatterv,stat=info)
|
||
|
|
if(info /= psb_success_) then
|
||
|
|
info=psb_err_from_subroutine_
|
||
|
|
ch_err='deallocate'
|
||
|
|
call psb_errpush(info,name,a_err=ch_err)
|
||
|
|
goto 9999
|
||
|
|
end if
|
||
|
|
end if
|
||
|
|
|
||
|
|
deallocate(all_dim, displ, ltg,stat=info)
|
||
|
|
if(info /= psb_success_) then
|
||
|
|
info=psb_err_from_subroutine_
|
||
|
|
ch_err='deallocate'
|
||
|
|
call psb_errpush(info,name,a_err=ch_err)
|
||
|
|
goto 9999
|
||
|
|
end if
|
||
|
|
|
||
|
|
call psb_erractionrestore(err_act)
|
||
|
|
return
|
||
|
|
|
||
|
|
9999 call psb_error_handler(ione*ictxt,err_act)
|
||
|
|
|
||
|
|
return
|
||
|
|
|
||
|
|
end subroutine psb_cscatterv
|
||
|
|
|