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471 lines
15 KiB
Fortran
471 lines
15 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS version 3.1
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!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
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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
|
|
!!$ modification, are permitted provided that the following conditions
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|
!!$ are met:
|
|
!!$ 1. Redistributions of source code must retain the above copyright
|
|
!!$ notice, this list of conditions and the following disclaimer.
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|
!!$ 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.
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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
|
|
!!$ 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_dscatter.f90
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!
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! Subroutine: psb_dscatterm
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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 - real,dimension(:,:). The global matrix to scatter.
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! locx - real,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_dscatterm(globx, locx, desc_a, info, iroot)
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use psb_base_mod, psb_protect_name => psb_dscatterm
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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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real(psb_dpk_), intent(out) :: locx(:,:)
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real(psb_dpk_), 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 :: iroot
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! locals
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integer(psb_mpik_) :: ictxt, np, me, root, iiroot, icomm, myrank, rootrank
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integer(psb_ipk_) :: ierr(5), err_act, m, n, i, j, idx, nrow, iglobx, jglobx,&
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& ilocx, jlocx, lda_locx, lda_globx, lock, globk, k, maxk, ilx,&
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& jlx, c, pos
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real(psb_dpk_),allocatable :: scatterv(:)
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integer(psb_ipk_), allocatable :: displ(:), l_t_g_all(:), all_dim(:), ltg(:)
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character(len=20) :: name, ch_err
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name='psb_scatterm'
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if(psb_get_errstatus() /= 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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! check on blacs grid
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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 (present(iroot)) then
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root = iroot
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if((root < -1).or.(root > np)) then
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info=psb_err_input_value_invalid_i_
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ierr(1)=5; ierr(2)=root
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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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root = -1
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end if
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if (root == -1) then
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iiroot = psb_root_
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endif
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iglobx = 1
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jglobx = 1
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ilocx = 1
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jlocx = 1
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lda_globx = size(globx,1)
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lda_locx = size(locx, 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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lock=size(locx,2)-jlocx+1
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globk=size(globx,2)-jglobx+1
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maxk=min(lock,globk)
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k = maxk
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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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lda_globx = size(globx)
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lda_locx = size(locx)
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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_bcast(ictxt,k,root=iiroot)
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! there should be a global check on k here!!!
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call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info)
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if (info == psb_success_) call psb_chkvect(m,n,lda_locx,ilocx,jlocx,desc_a,info,ilx,jlx)
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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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if ((ilx /= 1).or.(iglobx /= 1)) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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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nrow=desc_a%get_local_rows()
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if ((root == -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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call psb_loc_to_glob(i,idx,desc_a,info)
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locx(i,jlocx+j-1)=globx(idx,jglobx+j-1)
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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,root)
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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 mpi_gather(nrow,1,psb_mpi_ipk_integer,all_dim,&
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& 1,psb_mpi_ipk_integer,rootrank,icomm,info)
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if (me == root) 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,nrow,&
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& psb_mpi_ipk_integer,l_t_g_all,all_dim,&
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& displ,psb_mpi_ipk_integer,rootrank,icomm,info)
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do c=1, k
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! prepare vector to scatter
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if(me == root) 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,jglobx+c-1)
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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_r_dpk_,locx(1,jlocx+c-1),nrow,&
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& psb_mpi_r_dpk_,rootrank,icomm,info)
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end do
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deallocate(all_dim, l_t_g_all, displ, ltg, 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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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 psb_dscatterm
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!!$
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!!$ Parallel Sparse BLAS version 3.1
|
|
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$
|
|
!!$ 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
|
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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! Subroutine: psb_dscatterv
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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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! globx - real,dimension(:). The global vector to scatter.
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! locx - real,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_dscatterv(globx, locx, desc_a, info, iroot)
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use psb_base_mod, psb_protect_name => psb_dscatterv
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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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real(psb_dpk_), intent(out) :: locx(:)
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real(psb_dpk_), 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 :: iroot
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! locals
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integer(psb_mpik_) :: ictxt, np, me, root, iiroot, icomm, myrank, rootrank
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integer(psb_ipk_) :: ierr(5), err_act, m, n, i, j, idx, nrow, iglobx, jglobx,&
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& ilocx, jlocx, lda_locx, lda_globx, k, pos, ilx, jlx
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real(psb_dpk_), allocatable :: scatterv(:)
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integer(psb_ipk_), allocatable :: displ(:), l_t_g_all(:), all_dim(:), 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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if (psb_get_errstatus() /= 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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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, 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 (present(iroot)) then
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root = iroot
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if((root < -1).or.(root > np)) then
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info=psb_err_input_value_invalid_i_
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ierr(1) = 5; ierr(2)=root
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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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root = -1
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end if
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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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iglobx = 1
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jglobx = 1
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ilocx = 1
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jlocx = 1
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lda_globx = size(globx)
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lda_locx = size(locx)
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m = desc_a%get_global_rows()
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n = desc_a%get_global_cols()
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k = 1
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! there should be a global check on k here!!!
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call psb_chkglobvect(m,n,lda_globx,iglobx,jglobx,desc_a,info)
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if (info == psb_success_) &
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& call psb_chkvect(m,n,lda_locx,ilocx,jlocx,desc_a,info,ilx,jlx)
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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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if ((ilx /= 1).or.(iglobx /= 1)) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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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nrow = desc_a%get_local_rows()
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if ((root == -1).or.(np == 1)) then
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! extract my chunk
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do i=1, nrow
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call psb_loc_to_glob(i,idx,desc_a,info)
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locx(i)=globx(idx)
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end do
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else
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call psb_get_rank(rootrank,ictxt,root)
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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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|
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call mpi_gather(nrow,1,psb_mpi_ipk_integer,all_dim,&
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& 1,psb_mpi_ipk_integer,rootrank,icomm,info)
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if(me == root) 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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if (debug_level >= psb_debug_inner_) then
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write(debug_unit,*) me,' ',trim(name),' displ:',displ(1:np), &
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&' dim',all_dim(1:np), sum(all_dim)
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endif
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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
|
|
! 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.
|
|
!
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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,nrow,&
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& psb_mpi_ipk_integer,l_t_g_all,all_dim,&
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& displ,psb_mpi_ipk_integer,rootrank,icomm,info)
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! prepare vector to scatter
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if (me == root) 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)
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end do
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end do
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end if
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call mpi_scatterv(scatterv,all_dim,displ,&
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& psb_mpi_r_dpk_,locx,nrow,&
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& psb_mpi_r_dpk_,rootrank,icomm,info)
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deallocate(all_dim, l_t_g_all, displ, ltg, 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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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 psb_dscatterv
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