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1821 lines
56 KiB
Fortran
1821 lines
56 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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module psb_mat_dist_mod
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interface psb_matdist
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module procedure smatdist, cmatdist, dmatdist, zmatdist
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end interface
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contains
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subroutine smatdist(a_glob, a, ictxt, desc_a,&
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& b_glob, b, info, parts, v, inroot,fmt)
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!
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! an utility subroutine to distribute a matrix among processors
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! according to a user defined data distribution, using
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! sparse matrix subroutines.
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!
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! type(d_spmat) :: a_glob
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! on entry: this contains the global sparse matrix as follows:
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! a%fida =='csr'
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! a%aspk for coefficient values
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! a%ia1 for column indices
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! a%ia2 for row pointers
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! a%m for number of global matrix rows
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! a%k for number of global matrix columns
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! on exit : undefined, with unassociated pointers.
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!
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! type(d_spmat) :: a
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! on entry: fresh variable.
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! on exit : this will contain the local sparse matrix.
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!
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! interface parts
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! ! .....user passed subroutine.....
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! subroutine parts(global_indx,n,np,pv,nv)
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! implicit none
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! integer, intent(in) :: global_indx, n, np
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! integer, intent(out) :: nv
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! integer, intent(out) :: pv(*)
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!
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! end subroutine parts
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! end interface
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! on entry: subroutine providing user defined data distribution.
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! for each global_indx the subroutine should return
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! the list pv of all processes owning the row with
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! that index; the list will contain nv entries.
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! usually nv=1; if nv >1 then we have an overlap in the data
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! distribution.
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!
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! integer :: ictxt
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! on entry: blacs context.
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! on exit : unchanged.
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!
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! type (desc_type) :: desc_a
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! on entry: fresh variable.
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! on exit : the updated array descriptor
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!
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! real(psb_dpk_), optional :: b_glob(:)
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! on entry: this contains right hand side.
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! on exit :
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!
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! real(psb_dpk_), allocatable, optional :: b(:)
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! on entry: fresh variable.
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! on exit : this will contain the local right hand side.
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!
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! integer, optional :: inroot
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! on entry: specifies processor holding a_glob. default: 0
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! on exit : unchanged.
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!
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use psb_sparse_mod
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use psb_mat_mod
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implicit none
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! parameters
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type(psb_s_sparse_mat) :: a_glob
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real(psb_spk_) :: b_glob(:)
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integer :: ictxt
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type(psb_s_sparse_mat) :: a
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real(psb_spk_), allocatable :: b(:)
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type(psb_desc_type) :: desc_a
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integer, intent(out) :: info
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integer, optional :: inroot
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character(len=5), optional :: fmt
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integer :: v(:)
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interface
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subroutine parts(global_indx,n,np,pv,nv)
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implicit none
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integer, intent(in) :: global_indx, n, np
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integer, intent(out) :: nv
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integer, intent(out) :: pv(*)
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end subroutine parts
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end interface
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optional :: parts, v
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! local variables
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logical :: use_parts, use_v
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integer :: np, iam
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integer :: length_row, i_count, j_count,&
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& k_count, root, liwork, nrow, ncol, nnzero, nrhs,&
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& i, ll, nz, isize, iproc, nnr, err, err_act, int_err(5)
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integer, allocatable :: iwork(:)
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character :: afmt*5
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integer, allocatable :: irow(:),icol(:)
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real(psb_spk_), allocatable :: val(:)
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integer, parameter :: nb=30
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real(psb_dpk_) :: t0, t1, t2, t3, t4, t5
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character(len=20) :: name, ch_err
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info = 0
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err = 0
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name = 'mat_distf'
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call psb_erractionsave(err_act)
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! executable statements
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if (present(inroot)) then
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root = inroot
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else
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root = psb_root_
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end if
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call psb_info(ictxt, iam, np)
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if (iam == root) then
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nrow = a_glob%get_nrows()
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ncol = a_glob%get_ncols()
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if (nrow /= ncol) then
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write(0,*) 'a rectangular matrix ? ',nrow,ncol
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info=-1
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call psb_errpush(info,name)
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goto 9999
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endif
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nnzero = a_glob%get_nzeros()
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nrhs = 1
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endif
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use_parts = present(parts)
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use_v = present(v)
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if (count((/ use_parts, use_v /)) /= 1) then
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info=581
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call psb_errpush(info,name,a_err=" v, parts")
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goto 9999
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endif
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! broadcast informations to other processors
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call psb_bcast(ictxt,nrow, root)
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call psb_bcast(ictxt,ncol, root)
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call psb_bcast(ictxt,nnzero, root)
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call psb_bcast(ictxt,nrhs, root)
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liwork = max(np, nrow + ncol)
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allocate(iwork(liwork), stat = info)
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if (info /= 0) then
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info=4025
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int_err(1)=liwork
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call psb_errpush(info,name,i_err=int_err,a_err='integer')
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goto 9999
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endif
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if (iam == root) then
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write (*, fmt = *) 'start matdist',root, size(iwork),&
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&nrow, ncol, nnzero,nrhs
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endif
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if (use_parts) then
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call psb_cdall(ictxt,desc_a,info,mg=nrow,parts=parts)
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else
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call psb_cdall(ictxt,desc_a,info,vg=v)
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end if
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if(info/=0) then
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info=4010
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ch_err='psb_cdall'
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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_spall(a,desc_a,info,nnz=((nnzero+np-1)/np))
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if(info/=0) then
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info=4010
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ch_err='psb_psspall'
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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_geall(b,desc_a,info)
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if(info/=0) then
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info=4010
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ch_err='psb_psdsall'
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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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isize = 3*nb*max(((nnzero+nrow)/nrow),nb)
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allocate(val(isize),irow(isize),icol(isize),stat=info)
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if(info/=0) then
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info=4010
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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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i_count = 1
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do while (i_count <= nrow)
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if (use_parts) then
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call parts(i_count,nrow,np,iwork, length_row)
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if (length_row == 1) then
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j_count = i_count
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iproc = iwork(1)
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do
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j_count = j_count + 1
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if (j_count-i_count >= nb) exit
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if (j_count > nrow) exit
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call parts(j_count,nrow,np,iwork, length_row)
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if (length_row /= 1 ) exit
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if (iwork(1) /= iproc ) exit
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end do
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end if
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else
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length_row = 1
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j_count = i_count
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iproc = v(i_count)
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do
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j_count = j_count + 1
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if (j_count-i_count >= nb) exit
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if (j_count > nrow) exit
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if (v(j_count) /= iproc ) exit
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end do
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end if
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if (length_row == 1) then
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! now we should insert rows i_count..j_count-1
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nnr = j_count - i_count
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if (iam == root) then
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ll = 0
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do i= i_count, j_count-1
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call a_glob%csget(i,i,nz,&
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& irow,icol,val,info,nzin=ll,append=.true.)
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if (info /= 0) then
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if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
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write(0,*) 'Allocation failure? This should not happen!'
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end if
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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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ll = ll + nz
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end do
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if (iproc == iam) then
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call psb_spins(ll,irow,icol,val,a,desc_a,info)
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if(info/=0) then
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info=4010
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ch_err='psb_spins'
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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_geins(nnr,(/(i,i=i_count,j_count-1)/),b_glob(i_count:j_count-1),&
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& b,desc_a,info)
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if(info/=0) then
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info=4010
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ch_err='psb_ins'
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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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else
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call psb_snd(ictxt,nnr,iproc)
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call psb_snd(ictxt,ll,iproc)
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call psb_snd(ictxt,irow(1:ll),iproc)
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call psb_snd(ictxt,icol(1:ll),iproc)
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call psb_snd(ictxt,val(1:ll),iproc)
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call psb_snd(ictxt,b_glob(i_count:j_count-1),iproc)
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call psb_rcv(ictxt,ll,iproc)
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endif
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else if (iam /= root) then
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if (iproc == iam) then
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call psb_rcv(ictxt,nnr,root)
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call psb_rcv(ictxt,ll,root)
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if (ll > size(irow)) then
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write(0,*) iam,'need to reallocate ',ll
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deallocate(val,irow,icol)
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allocate(val(ll),irow(ll),icol(ll),stat=info)
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if(info/=0) then
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info=4010
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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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endif
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call psb_rcv(ictxt,irow(1:ll),root)
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call psb_rcv(ictxt,icol(1:ll),root)
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call psb_rcv(ictxt,val(1:ll),root)
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call psb_rcv(ictxt,b_glob(i_count:i_count+nnr-1),root)
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call psb_snd(ictxt,ll,root)
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call psb_spins(ll,irow,icol,val,a,desc_a,info)
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if(info/=0) then
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info=4010
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ch_err='psspins'
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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_geins(nnr,(/(i,i=i_count,i_count+nnr-1)/),&
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& b_glob(i_count:i_count+nnr-1),b,desc_a,info)
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if(info/=0) then
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info=4010
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ch_err='psdsins'
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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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endif
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endif
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i_count = j_count
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else
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! here processors are counted 1..np
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do j_count = 1, length_row
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k_count = iwork(j_count)
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if (iam == root) then
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|
|
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ll = 0
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do i= i_count, i_count
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call a_glob%csget(i,i,nz,&
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& irow,icol,val,info,nzin=ll,append=.true.)
|
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if (info /= 0) then
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if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
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write(0,*) 'Allocation failure? This should not happen!'
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end if
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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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ll = ll + nz
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end do
|
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|
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if (k_count == iam) then
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|
|
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call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
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if(info/=0) then
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info=4010
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ch_err='psspins'
|
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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_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
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& b,desc_a,info)
|
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if(info/=0) then
|
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info=4010
|
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ch_err='psdsins'
|
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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
|
|
else
|
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call psb_snd(ictxt,ll,k_count)
|
|
call psb_snd(ictxt,irow(1:ll),k_count)
|
|
call psb_snd(ictxt,icol(1:ll),k_count)
|
|
call psb_snd(ictxt,val(1:ll),k_count)
|
|
call psb_snd(ictxt,b_glob(i_count),k_count)
|
|
call psb_rcv(ictxt,ll,k_count)
|
|
endif
|
|
else if (iam /= root) then
|
|
if (k_count == iam) then
|
|
call psb_rcv(ictxt,ll,root)
|
|
call psb_rcv(ictxt,irow(1:ll),root)
|
|
call psb_rcv(ictxt,icol(1:ll),root)
|
|
call psb_rcv(ictxt,val(1:ll),root)
|
|
call psb_rcv(ictxt,b_glob(i_count),root)
|
|
call psb_snd(ictxt,ll,root)
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
endif
|
|
endif
|
|
end do
|
|
i_count = i_count + 1
|
|
endif
|
|
end do
|
|
|
|
if (present(fmt)) then
|
|
afmt=fmt
|
|
else
|
|
afmt = 'CSR'
|
|
endif
|
|
|
|
call psb_barrier(ictxt)
|
|
t0 = psb_wtime()
|
|
call psb_cdasb(desc_a,info)
|
|
t1 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_cdasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_barrier(ictxt)
|
|
t2 = psb_wtime()
|
|
call psb_spasb(a,desc_a,info,dupl=psb_dupl_err_,afmt=afmt)
|
|
t3 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_spasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
if (iam == root) then
|
|
write(*,*) 'descriptor assembly: ',t1-t0
|
|
write(*,*) 'sparse matrix assembly: ',t3-t2
|
|
end if
|
|
|
|
call psb_geasb(b,desc_a,info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psdsasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
deallocate(val,irow,icol,stat=info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='deallocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
deallocate(iwork)
|
|
if (iam == root) write (*, fmt = *) 'end matdist'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error(ictxt)
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine smatdist
|
|
|
|
|
|
subroutine dmatdist(a_glob, a, ictxt, desc_a,&
|
|
& b_glob, b, info, parts, v, inroot,fmt)
|
|
!
|
|
! an utility subroutine to distribute a matrix among processors
|
|
! according to a user defined data distribution, using
|
|
! sparse matrix subroutines.
|
|
!
|
|
! type(d_spmat) :: a_glob
|
|
! on entry: this contains the global sparse matrix as follows:
|
|
! a%fida =='csr'
|
|
! a%aspk for coefficient values
|
|
! a%ia1 for column indices
|
|
! a%ia2 for row pointers
|
|
! a%m for number of global matrix rows
|
|
! a%k for number of global matrix columns
|
|
! on exit : undefined, with unassociated pointers.
|
|
!
|
|
! type(d_spmat) :: a
|
|
! on entry: fresh variable.
|
|
! on exit : this will contain the local sparse matrix.
|
|
!
|
|
! interface parts
|
|
! ! .....user passed subroutine.....
|
|
! subroutine parts(global_indx,n,np,pv,nv)
|
|
! implicit none
|
|
! integer, intent(in) :: global_indx, n, np
|
|
! integer, intent(out) :: nv
|
|
! integer, intent(out) :: pv(*)
|
|
!
|
|
! end subroutine parts
|
|
! end interface
|
|
! on entry: subroutine providing user defined data distribution.
|
|
! for each global_indx the subroutine should return
|
|
! the list pv of all processes owning the row with
|
|
! that index; the list will contain nv entries.
|
|
! usually nv=1; if nv >1 then we have an overlap in the data
|
|
! distribution.
|
|
!
|
|
! integer :: ictxt
|
|
! on entry: blacs context.
|
|
! on exit : unchanged.
|
|
!
|
|
! type (desc_type) :: desc_a
|
|
! on entry: fresh variable.
|
|
! on exit : the updated array descriptor
|
|
!
|
|
! real(psb_dpk_), optional :: b_glob(:)
|
|
! on entry: this contains right hand side.
|
|
! on exit :
|
|
!
|
|
! real(psb_dpk_), allocatable, optional :: b(:)
|
|
! on entry: fresh variable.
|
|
! on exit : this will contain the local right hand side.
|
|
!
|
|
! integer, optional :: inroot
|
|
! on entry: specifies processor holding a_glob. default: 0
|
|
! on exit : unchanged.
|
|
!
|
|
use psb_sparse_mod
|
|
use psb_mat_mod
|
|
implicit none
|
|
|
|
! parameters
|
|
type(psb_d_sparse_mat) :: a_glob
|
|
real(psb_dpk_) :: b_glob(:)
|
|
integer :: ictxt
|
|
type(psb_d_sparse_mat) :: a
|
|
real(psb_dpk_), allocatable :: b(:)
|
|
type(psb_desc_type) :: desc_a
|
|
integer, intent(out) :: info
|
|
integer, optional :: inroot
|
|
character(len=5), optional :: fmt
|
|
|
|
integer :: v(:)
|
|
interface
|
|
subroutine parts(global_indx,n,np,pv,nv)
|
|
implicit none
|
|
integer, intent(in) :: global_indx, n, np
|
|
integer, intent(out) :: nv
|
|
integer, intent(out) :: pv(*)
|
|
end subroutine parts
|
|
end interface
|
|
optional :: parts, v
|
|
|
|
! local variables
|
|
logical :: use_parts, use_v
|
|
integer :: np, iam
|
|
integer :: length_row, i_count, j_count,&
|
|
& k_count, root, liwork, nrow, ncol, nnzero, nrhs,&
|
|
& i, ll, nz, isize, iproc, nnr, err, err_act, int_err(5)
|
|
integer, allocatable :: iwork(:)
|
|
character :: afmt*5
|
|
integer, allocatable :: irow(:),icol(:)
|
|
real(psb_dpk_), allocatable :: val(:)
|
|
integer, parameter :: nb=30
|
|
real(psb_dpk_) :: t0, t1, t2, t3, t4, t5
|
|
character(len=20) :: name, ch_err
|
|
|
|
info = 0
|
|
err = 0
|
|
name = 'mat_distf'
|
|
call psb_erractionsave(err_act)
|
|
|
|
! executable statements
|
|
if (present(inroot)) then
|
|
root = inroot
|
|
else
|
|
root = psb_root_
|
|
end if
|
|
call psb_info(ictxt, iam, np)
|
|
if (iam == root) then
|
|
nrow = a_glob%get_nrows()
|
|
ncol = a_glob%get_ncols()
|
|
if (nrow /= ncol) then
|
|
write(0,*) 'a rectangular matrix ? ',nrow,ncol
|
|
info=-1
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
nnzero = a_glob%get_nzeros()
|
|
nrhs = 1
|
|
endif
|
|
|
|
use_parts = present(parts)
|
|
use_v = present(v)
|
|
if (count((/ use_parts, use_v /)) /= 1) then
|
|
info=581
|
|
call psb_errpush(info,name,a_err=" v, parts")
|
|
goto 9999
|
|
endif
|
|
|
|
! broadcast informations to other processors
|
|
call psb_bcast(ictxt,nrow, root)
|
|
call psb_bcast(ictxt,ncol, root)
|
|
call psb_bcast(ictxt,nnzero, root)
|
|
call psb_bcast(ictxt,nrhs, root)
|
|
liwork = max(np, nrow + ncol)
|
|
allocate(iwork(liwork), stat = info)
|
|
if (info /= 0) then
|
|
info=4025
|
|
int_err(1)=liwork
|
|
call psb_errpush(info,name,i_err=int_err,a_err='integer')
|
|
goto 9999
|
|
endif
|
|
if (iam == root) then
|
|
write (*, fmt = *) 'start matdist',root, size(iwork),&
|
|
&nrow, ncol, nnzero,nrhs
|
|
endif
|
|
if (use_parts) then
|
|
call psb_cdall(ictxt,desc_a,info,mg=nrow,parts=parts)
|
|
else
|
|
call psb_cdall(ictxt,desc_a,info,vg=v)
|
|
end if
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_cdall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_spall(a,desc_a,info,nnz=((nnzero+np-1)/np))
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_psspall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geall(b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_psdsall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
|
|
isize = 3*nb*max(((nnzero+nrow)/nrow),nb)
|
|
allocate(val(isize),irow(isize),icol(isize),stat=info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='Allocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
i_count = 1
|
|
|
|
do while (i_count <= nrow)
|
|
|
|
if (use_parts) then
|
|
call parts(i_count,nrow,np,iwork, length_row)
|
|
if (length_row == 1) then
|
|
j_count = i_count
|
|
iproc = iwork(1)
|
|
do
|
|
j_count = j_count + 1
|
|
if (j_count-i_count >= nb) exit
|
|
if (j_count > nrow) exit
|
|
call parts(j_count,nrow,np,iwork, length_row)
|
|
if (length_row /= 1 ) exit
|
|
if (iwork(1) /= iproc ) exit
|
|
end do
|
|
end if
|
|
else
|
|
length_row = 1
|
|
j_count = i_count
|
|
iproc = v(i_count)
|
|
|
|
do
|
|
j_count = j_count + 1
|
|
if (j_count-i_count >= nb) exit
|
|
if (j_count > nrow) exit
|
|
if (v(j_count) /= iproc ) exit
|
|
end do
|
|
end if
|
|
|
|
if (length_row == 1) then
|
|
! now we should insert rows i_count..j_count-1
|
|
nnr = j_count - i_count
|
|
|
|
if (iam == root) then
|
|
|
|
ll = 0
|
|
do i= i_count, j_count-1
|
|
call a_glob%csget(i,i,nz,&
|
|
& irow,icol,val,info,nzin=ll,append=.true.)
|
|
if (info /= 0) then
|
|
if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
|
|
write(0,*) 'Allocation failure? This should not happen!'
|
|
end if
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
ll = ll + nz
|
|
end do
|
|
|
|
if (iproc == iam) then
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_spins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(nnr,(/(i,i=i_count,j_count-1)/),b_glob(i_count:j_count-1),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_ins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
call psb_snd(ictxt,nnr,iproc)
|
|
call psb_snd(ictxt,ll,iproc)
|
|
call psb_snd(ictxt,irow(1:ll),iproc)
|
|
call psb_snd(ictxt,icol(1:ll),iproc)
|
|
call psb_snd(ictxt,val(1:ll),iproc)
|
|
call psb_snd(ictxt,b_glob(i_count:j_count-1),iproc)
|
|
call psb_rcv(ictxt,ll,iproc)
|
|
endif
|
|
else if (iam /= root) then
|
|
|
|
if (iproc == iam) then
|
|
call psb_rcv(ictxt,nnr,root)
|
|
call psb_rcv(ictxt,ll,root)
|
|
if (ll > size(irow)) then
|
|
write(0,*) iam,'need to reallocate ',ll
|
|
deallocate(val,irow,icol)
|
|
allocate(val(ll),irow(ll),icol(ll),stat=info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='Allocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
endif
|
|
call psb_rcv(ictxt,irow(1:ll),root)
|
|
call psb_rcv(ictxt,icol(1:ll),root)
|
|
call psb_rcv(ictxt,val(1:ll),root)
|
|
call psb_rcv(ictxt,b_glob(i_count:i_count+nnr-1),root)
|
|
call psb_snd(ictxt,ll,root)
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(nnr,(/(i,i=i_count,i_count+nnr-1)/),&
|
|
& b_glob(i_count:i_count+nnr-1),b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
endif
|
|
endif
|
|
|
|
i_count = j_count
|
|
|
|
else
|
|
|
|
! here processors are counted 1..np
|
|
do j_count = 1, length_row
|
|
k_count = iwork(j_count)
|
|
if (iam == root) then
|
|
|
|
ll = 0
|
|
do i= i_count, i_count
|
|
call a_glob%csget(i,i,nz,&
|
|
& irow,icol,val,info,nzin=ll,append=.true.)
|
|
if (info /= 0) then
|
|
if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
|
|
write(0,*) 'Allocation failure? This should not happen!'
|
|
end if
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
ll = ll + nz
|
|
end do
|
|
|
|
if (k_count == iam) then
|
|
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
call psb_snd(ictxt,ll,k_count)
|
|
call psb_snd(ictxt,irow(1:ll),k_count)
|
|
call psb_snd(ictxt,icol(1:ll),k_count)
|
|
call psb_snd(ictxt,val(1:ll),k_count)
|
|
call psb_snd(ictxt,b_glob(i_count),k_count)
|
|
call psb_rcv(ictxt,ll,k_count)
|
|
endif
|
|
else if (iam /= root) then
|
|
if (k_count == iam) then
|
|
call psb_rcv(ictxt,ll,root)
|
|
call psb_rcv(ictxt,irow(1:ll),root)
|
|
call psb_rcv(ictxt,icol(1:ll),root)
|
|
call psb_rcv(ictxt,val(1:ll),root)
|
|
call psb_rcv(ictxt,b_glob(i_count),root)
|
|
call psb_snd(ictxt,ll,root)
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
endif
|
|
endif
|
|
end do
|
|
i_count = i_count + 1
|
|
endif
|
|
end do
|
|
|
|
if (present(fmt)) then
|
|
afmt=fmt
|
|
else
|
|
afmt = 'CSR'
|
|
endif
|
|
|
|
call psb_barrier(ictxt)
|
|
t0 = psb_wtime()
|
|
call psb_cdasb(desc_a,info)
|
|
t1 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_cdasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_barrier(ictxt)
|
|
t2 = psb_wtime()
|
|
call psb_spasb(a,desc_a,info,dupl=psb_dupl_err_,afmt=afmt)
|
|
t3 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_spasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
if (iam == root) then
|
|
write(*,*) 'descriptor assembly: ',t1-t0
|
|
write(*,*) 'sparse matrix assembly: ',t3-t2
|
|
end if
|
|
|
|
call psb_geasb(b,desc_a,info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psdsasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
deallocate(val,irow,icol,stat=info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='deallocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
deallocate(iwork)
|
|
if (iam == root) write (*, fmt = *) 'end matdist'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error(ictxt)
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine dmatdist
|
|
|
|
|
|
subroutine cmatdist(a_glob, a, ictxt, desc_a,&
|
|
& b_glob, b, info, parts, v, inroot,fmt)
|
|
!
|
|
! an utility subroutine to distribute a matrix among processors
|
|
! according to a user defined data distribution, using
|
|
! sparse matrix subroutines.
|
|
!
|
|
! type(d_spmat) :: a_glob
|
|
! on entry: this contains the global sparse matrix as follows:
|
|
! a%fida =='csr'
|
|
! a%aspk for coefficient values
|
|
! a%ia1 for column indices
|
|
! a%ia2 for row pointers
|
|
! a%m for number of global matrix rows
|
|
! a%k for number of global matrix columns
|
|
! on exit : undefined, with unassociated pointers.
|
|
!
|
|
! type(d_spmat) :: a
|
|
! on entry: fresh variable.
|
|
! on exit : this will contain the local sparse matrix.
|
|
!
|
|
! interface parts
|
|
! ! .....user passed subroutine.....
|
|
! subroutine parts(global_indx,n,np,pv,nv)
|
|
! implicit none
|
|
! integer, intent(in) :: global_indx, n, np
|
|
! integer, intent(out) :: nv
|
|
! integer, intent(out) :: pv(*)
|
|
!
|
|
! end subroutine parts
|
|
! end interface
|
|
! on entry: subroutine providing user defined data distribution.
|
|
! for each global_indx the subroutine should return
|
|
! the list pv of all processes owning the row with
|
|
! that index; the list will contain nv entries.
|
|
! usually nv=1; if nv >1 then we have an overlap in the data
|
|
! distribution.
|
|
!
|
|
! integer :: ictxt
|
|
! on entry: blacs context.
|
|
! on exit : unchanged.
|
|
!
|
|
! type (desc_type) :: desc_a
|
|
! on entry: fresh variable.
|
|
! on exit : the updated array descriptor
|
|
!
|
|
! real(psb_dpk_), optional :: b_glob(:)
|
|
! on entry: this contains right hand side.
|
|
! on exit :
|
|
!
|
|
! real(psb_dpk_), allocatable, optional :: b(:)
|
|
! on entry: fresh variable.
|
|
! on exit : this will contain the local right hand side.
|
|
!
|
|
! integer, optional :: inroot
|
|
! on entry: specifies processor holding a_glob. default: 0
|
|
! on exit : unchanged.
|
|
!
|
|
use psb_sparse_mod
|
|
use psb_mat_mod
|
|
implicit none
|
|
|
|
! parameters
|
|
type(psb_c_sparse_mat) :: a_glob
|
|
complex(psb_spk_) :: b_glob(:)
|
|
integer :: ictxt
|
|
type(psb_c_sparse_mat) :: a
|
|
complex(psb_spk_), allocatable :: b(:)
|
|
type(psb_desc_type) :: desc_a
|
|
integer, intent(out) :: info
|
|
integer, optional :: inroot
|
|
character(len=5), optional :: fmt
|
|
|
|
integer :: v(:)
|
|
interface
|
|
subroutine parts(global_indx,n,np,pv,nv)
|
|
implicit none
|
|
integer, intent(in) :: global_indx, n, np
|
|
integer, intent(out) :: nv
|
|
integer, intent(out) :: pv(*)
|
|
end subroutine parts
|
|
end interface
|
|
optional :: parts, v
|
|
|
|
! local variables
|
|
logical :: use_parts, use_v
|
|
integer :: np, iam
|
|
integer :: length_row, i_count, j_count,&
|
|
& k_count, root, liwork, nrow, ncol, nnzero, nrhs,&
|
|
& i, ll, nz, isize, iproc, nnr, err, err_act, int_err(5)
|
|
integer, allocatable :: iwork(:)
|
|
character :: afmt*5
|
|
integer, allocatable :: irow(:),icol(:)
|
|
complex(psb_spk_), allocatable :: val(:)
|
|
integer, parameter :: nb=30
|
|
real(psb_dpk_) :: t0, t1, t2, t3, t4, t5
|
|
character(len=20) :: name, ch_err
|
|
|
|
info = 0
|
|
err = 0
|
|
name = 'mat_distf'
|
|
call psb_erractionsave(err_act)
|
|
|
|
! executable statements
|
|
if (present(inroot)) then
|
|
root = inroot
|
|
else
|
|
root = psb_root_
|
|
end if
|
|
call psb_info(ictxt, iam, np)
|
|
if (iam == root) then
|
|
nrow = a_glob%get_nrows()
|
|
ncol = a_glob%get_ncols()
|
|
if (nrow /= ncol) then
|
|
write(0,*) 'a rectangular matrix ? ',nrow,ncol
|
|
info=-1
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
nnzero = a_glob%get_nzeros()
|
|
nrhs = 1
|
|
endif
|
|
|
|
use_parts = present(parts)
|
|
use_v = present(v)
|
|
if (count((/ use_parts, use_v /)) /= 1) then
|
|
info=581
|
|
call psb_errpush(info,name,a_err=" v, parts")
|
|
goto 9999
|
|
endif
|
|
|
|
! broadcast informations to other processors
|
|
call psb_bcast(ictxt,nrow, root)
|
|
call psb_bcast(ictxt,ncol, root)
|
|
call psb_bcast(ictxt,nnzero, root)
|
|
call psb_bcast(ictxt,nrhs, root)
|
|
liwork = max(np, nrow + ncol)
|
|
allocate(iwork(liwork), stat = info)
|
|
if (info /= 0) then
|
|
info=4025
|
|
int_err(1)=liwork
|
|
call psb_errpush(info,name,i_err=int_err,a_err='integer')
|
|
goto 9999
|
|
endif
|
|
if (iam == root) then
|
|
write (*, fmt = *) 'start matdist',root, size(iwork),&
|
|
&nrow, ncol, nnzero,nrhs
|
|
endif
|
|
if (use_parts) then
|
|
call psb_cdall(ictxt,desc_a,info,mg=nrow,parts=parts)
|
|
else
|
|
call psb_cdall(ictxt,desc_a,info,vg=v)
|
|
end if
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_cdall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_spall(a,desc_a,info,nnz=((nnzero+np-1)/np))
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_psspall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geall(b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_psdsall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
|
|
isize = 3*nb*max(((nnzero+nrow)/nrow),nb)
|
|
allocate(val(isize),irow(isize),icol(isize),stat=info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='Allocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
i_count = 1
|
|
|
|
do while (i_count <= nrow)
|
|
|
|
if (use_parts) then
|
|
call parts(i_count,nrow,np,iwork, length_row)
|
|
if (length_row == 1) then
|
|
j_count = i_count
|
|
iproc = iwork(1)
|
|
do
|
|
j_count = j_count + 1
|
|
if (j_count-i_count >= nb) exit
|
|
if (j_count > nrow) exit
|
|
call parts(j_count,nrow,np,iwork, length_row)
|
|
if (length_row /= 1 ) exit
|
|
if (iwork(1) /= iproc ) exit
|
|
end do
|
|
end if
|
|
else
|
|
length_row = 1
|
|
j_count = i_count
|
|
iproc = v(i_count)
|
|
|
|
do
|
|
j_count = j_count + 1
|
|
if (j_count-i_count >= nb) exit
|
|
if (j_count > nrow) exit
|
|
if (v(j_count) /= iproc ) exit
|
|
end do
|
|
end if
|
|
|
|
if (length_row == 1) then
|
|
! now we should insert rows i_count..j_count-1
|
|
nnr = j_count - i_count
|
|
|
|
if (iam == root) then
|
|
|
|
ll = 0
|
|
do i= i_count, j_count-1
|
|
call a_glob%csget(i,i,nz,&
|
|
& irow,icol,val,info,nzin=ll,append=.true.)
|
|
if (info /= 0) then
|
|
if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
|
|
write(0,*) 'Allocation failure? This should not happen!'
|
|
end if
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
ll = ll + nz
|
|
end do
|
|
|
|
if (iproc == iam) then
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_spins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(nnr,(/(i,i=i_count,j_count-1)/),b_glob(i_count:j_count-1),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_ins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
call psb_snd(ictxt,nnr,iproc)
|
|
call psb_snd(ictxt,ll,iproc)
|
|
call psb_snd(ictxt,irow(1:ll),iproc)
|
|
call psb_snd(ictxt,icol(1:ll),iproc)
|
|
call psb_snd(ictxt,val(1:ll),iproc)
|
|
call psb_snd(ictxt,b_glob(i_count:j_count-1),iproc)
|
|
call psb_rcv(ictxt,ll,iproc)
|
|
endif
|
|
else if (iam /= root) then
|
|
|
|
if (iproc == iam) then
|
|
call psb_rcv(ictxt,nnr,root)
|
|
call psb_rcv(ictxt,ll,root)
|
|
if (ll > size(irow)) then
|
|
write(0,*) iam,'need to reallocate ',ll
|
|
deallocate(val,irow,icol)
|
|
allocate(val(ll),irow(ll),icol(ll),stat=info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='Allocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
endif
|
|
call psb_rcv(ictxt,irow(1:ll),root)
|
|
call psb_rcv(ictxt,icol(1:ll),root)
|
|
call psb_rcv(ictxt,val(1:ll),root)
|
|
call psb_rcv(ictxt,b_glob(i_count:i_count+nnr-1),root)
|
|
call psb_snd(ictxt,ll,root)
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(nnr,(/(i,i=i_count,i_count+nnr-1)/),&
|
|
& b_glob(i_count:i_count+nnr-1),b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
endif
|
|
endif
|
|
|
|
i_count = j_count
|
|
|
|
else
|
|
|
|
! here processors are counted 1..np
|
|
do j_count = 1, length_row
|
|
k_count = iwork(j_count)
|
|
if (iam == root) then
|
|
|
|
ll = 0
|
|
do i= i_count, i_count
|
|
call a_glob%csget(i,i,nz,&
|
|
& irow,icol,val,info,nzin=ll,append=.true.)
|
|
if (info /= 0) then
|
|
if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
|
|
write(0,*) 'Allocation failure? This should not happen!'
|
|
end if
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
ll = ll + nz
|
|
end do
|
|
|
|
if (k_count == iam) then
|
|
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
call psb_snd(ictxt,ll,k_count)
|
|
call psb_snd(ictxt,irow(1:ll),k_count)
|
|
call psb_snd(ictxt,icol(1:ll),k_count)
|
|
call psb_snd(ictxt,val(1:ll),k_count)
|
|
call psb_snd(ictxt,b_glob(i_count),k_count)
|
|
call psb_rcv(ictxt,ll,k_count)
|
|
endif
|
|
else if (iam /= root) then
|
|
if (k_count == iam) then
|
|
call psb_rcv(ictxt,ll,root)
|
|
call psb_rcv(ictxt,irow(1:ll),root)
|
|
call psb_rcv(ictxt,icol(1:ll),root)
|
|
call psb_rcv(ictxt,val(1:ll),root)
|
|
call psb_rcv(ictxt,b_glob(i_count),root)
|
|
call psb_snd(ictxt,ll,root)
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
endif
|
|
endif
|
|
end do
|
|
i_count = i_count + 1
|
|
endif
|
|
end do
|
|
|
|
if (present(fmt)) then
|
|
afmt=fmt
|
|
else
|
|
afmt = 'CSR'
|
|
endif
|
|
|
|
call psb_barrier(ictxt)
|
|
t0 = psb_wtime()
|
|
call psb_cdasb(desc_a,info)
|
|
t1 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_cdasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_barrier(ictxt)
|
|
t2 = psb_wtime()
|
|
call psb_spasb(a,desc_a,info,dupl=psb_dupl_err_,afmt=afmt)
|
|
t3 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_spasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
if (iam == root) then
|
|
write(*,*) 'descriptor assembly: ',t1-t0
|
|
write(*,*) 'sparse matrix assembly: ',t3-t2
|
|
end if
|
|
|
|
call psb_geasb(b,desc_a,info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psdsasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
deallocate(val,irow,icol,stat=info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='deallocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
deallocate(iwork)
|
|
if (iam == root) write (*, fmt = *) 'end matdist'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error(ictxt)
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine cmatdist
|
|
|
|
|
|
subroutine zmatdist(a_glob, a, ictxt, desc_a,&
|
|
& b_glob, b, info, parts, v, inroot,fmt)
|
|
!
|
|
! an utility subroutine to distribute a matrix among processors
|
|
! according to a user defined data distribution, using
|
|
! sparse matrix subroutines.
|
|
!
|
|
! type(d_spmat) :: a_glob
|
|
! on entry: this contains the global sparse matrix as follows:
|
|
! a%fida =='csr'
|
|
! a%aspk for coefficient values
|
|
! a%ia1 for column indices
|
|
! a%ia2 for row pointers
|
|
! a%m for number of global matrix rows
|
|
! a%k for number of global matrix columns
|
|
! on exit : undefined, with unassociated pointers.
|
|
!
|
|
! type(d_spmat) :: a
|
|
! on entry: fresh variable.
|
|
! on exit : this will contain the local sparse matrix.
|
|
!
|
|
! interface parts
|
|
! ! .....user passed subroutine.....
|
|
! subroutine parts(global_indx,n,np,pv,nv)
|
|
! implicit none
|
|
! integer, intent(in) :: global_indx, n, np
|
|
! integer, intent(out) :: nv
|
|
! integer, intent(out) :: pv(*)
|
|
!
|
|
! end subroutine parts
|
|
! end interface
|
|
! on entry: subroutine providing user defined data distribution.
|
|
! for each global_indx the subroutine should return
|
|
! the list pv of all processes owning the row with
|
|
! that index; the list will contain nv entries.
|
|
! usually nv=1; if nv >1 then we have an overlap in the data
|
|
! distribution.
|
|
!
|
|
! integer :: ictxt
|
|
! on entry: blacs context.
|
|
! on exit : unchanged.
|
|
!
|
|
! type (desc_type) :: desc_a
|
|
! on entry: fresh variable.
|
|
! on exit : the updated array descriptor
|
|
!
|
|
! real(psb_dpk_), optional :: b_glob(:)
|
|
! on entry: this contains right hand side.
|
|
! on exit :
|
|
!
|
|
! real(psb_dpk_), allocatable, optional :: b(:)
|
|
! on entry: fresh variable.
|
|
! on exit : this will contain the local right hand side.
|
|
!
|
|
! integer, optional :: inroot
|
|
! on entry: specifies processor holding a_glob. default: 0
|
|
! on exit : unchanged.
|
|
!
|
|
use psb_sparse_mod
|
|
use psb_mat_mod
|
|
implicit none
|
|
|
|
! parameters
|
|
type(psb_z_sparse_mat) :: a_glob
|
|
complex(psb_dpk_) :: b_glob(:)
|
|
integer :: ictxt
|
|
type(psb_z_sparse_mat) :: a
|
|
complex(psb_dpk_), allocatable :: b(:)
|
|
type(psb_desc_type) :: desc_a
|
|
integer, intent(out) :: info
|
|
integer, optional :: inroot
|
|
character(len=5), optional :: fmt
|
|
|
|
integer :: v(:)
|
|
interface
|
|
subroutine parts(global_indx,n,np,pv,nv)
|
|
implicit none
|
|
integer, intent(in) :: global_indx, n, np
|
|
integer, intent(out) :: nv
|
|
integer, intent(out) :: pv(*)
|
|
end subroutine parts
|
|
end interface
|
|
optional :: parts, v
|
|
|
|
! local variables
|
|
logical :: use_parts, use_v
|
|
integer :: np, iam
|
|
integer :: length_row, i_count, j_count,&
|
|
& k_count, root, liwork, nrow, ncol, nnzero, nrhs,&
|
|
& i, ll, nz, isize, iproc, nnr, err, err_act, int_err(5)
|
|
integer, allocatable :: iwork(:)
|
|
character :: afmt*5
|
|
integer, allocatable :: irow(:),icol(:)
|
|
complex(psb_dpk_), allocatable :: val(:)
|
|
integer, parameter :: nb=30
|
|
real(psb_dpk_) :: t0, t1, t2, t3, t4, t5
|
|
character(len=20) :: name, ch_err
|
|
|
|
info = 0
|
|
err = 0
|
|
name = 'mat_distf'
|
|
call psb_erractionsave(err_act)
|
|
|
|
! executable statements
|
|
if (present(inroot)) then
|
|
root = inroot
|
|
else
|
|
root = psb_root_
|
|
end if
|
|
call psb_info(ictxt, iam, np)
|
|
if (iam == root) then
|
|
nrow = a_glob%get_nrows()
|
|
ncol = a_glob%get_ncols()
|
|
if (nrow /= ncol) then
|
|
write(0,*) 'a rectangular matrix ? ',nrow,ncol
|
|
info=-1
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
nnzero = a_glob%get_nzeros()
|
|
nrhs = 1
|
|
endif
|
|
|
|
use_parts = present(parts)
|
|
use_v = present(v)
|
|
if (count((/ use_parts, use_v /)) /= 1) then
|
|
info=581
|
|
call psb_errpush(info,name,a_err=" v, parts")
|
|
goto 9999
|
|
endif
|
|
|
|
! broadcast informations to other processors
|
|
call psb_bcast(ictxt,nrow, root)
|
|
call psb_bcast(ictxt,ncol, root)
|
|
call psb_bcast(ictxt,nnzero, root)
|
|
call psb_bcast(ictxt,nrhs, root)
|
|
liwork = max(np, nrow + ncol)
|
|
allocate(iwork(liwork), stat = info)
|
|
if (info /= 0) then
|
|
info=4025
|
|
int_err(1)=liwork
|
|
call psb_errpush(info,name,i_err=int_err,a_err='integer')
|
|
goto 9999
|
|
endif
|
|
if (iam == root) then
|
|
write (*, fmt = *) 'start matdist',root, size(iwork),&
|
|
&nrow, ncol, nnzero,nrhs
|
|
endif
|
|
if (use_parts) then
|
|
call psb_cdall(ictxt,desc_a,info,mg=nrow,parts=parts)
|
|
else
|
|
call psb_cdall(ictxt,desc_a,info,vg=v)
|
|
end if
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_cdall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_spall(a,desc_a,info,nnz=((nnzero+np-1)/np))
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_psspall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geall(b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_psdsall'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
|
|
isize = 3*nb*max(((nnzero+nrow)/nrow),nb)
|
|
allocate(val(isize),irow(isize),icol(isize),stat=info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='Allocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
i_count = 1
|
|
|
|
do while (i_count <= nrow)
|
|
|
|
if (use_parts) then
|
|
call parts(i_count,nrow,np,iwork, length_row)
|
|
if (length_row == 1) then
|
|
j_count = i_count
|
|
iproc = iwork(1)
|
|
do
|
|
j_count = j_count + 1
|
|
if (j_count-i_count >= nb) exit
|
|
if (j_count > nrow) exit
|
|
call parts(j_count,nrow,np,iwork, length_row)
|
|
if (length_row /= 1 ) exit
|
|
if (iwork(1) /= iproc ) exit
|
|
end do
|
|
end if
|
|
else
|
|
length_row = 1
|
|
j_count = i_count
|
|
iproc = v(i_count)
|
|
|
|
do
|
|
j_count = j_count + 1
|
|
if (j_count-i_count >= nb) exit
|
|
if (j_count > nrow) exit
|
|
if (v(j_count) /= iproc ) exit
|
|
end do
|
|
end if
|
|
|
|
if (length_row == 1) then
|
|
! now we should insert rows i_count..j_count-1
|
|
nnr = j_count - i_count
|
|
|
|
if (iam == root) then
|
|
|
|
ll = 0
|
|
do i= i_count, j_count-1
|
|
call a_glob%csget(i,i,nz,&
|
|
& irow,icol,val,info,nzin=ll,append=.true.)
|
|
if (info /= 0) then
|
|
if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
|
|
write(0,*) 'Allocation failure? This should not happen!'
|
|
end if
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
ll = ll + nz
|
|
end do
|
|
|
|
if (iproc == iam) then
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_spins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(nnr,(/(i,i=i_count,j_count-1)/),b_glob(i_count:j_count-1),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psb_ins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
call psb_snd(ictxt,nnr,iproc)
|
|
call psb_snd(ictxt,ll,iproc)
|
|
call psb_snd(ictxt,irow(1:ll),iproc)
|
|
call psb_snd(ictxt,icol(1:ll),iproc)
|
|
call psb_snd(ictxt,val(1:ll),iproc)
|
|
call psb_snd(ictxt,b_glob(i_count:j_count-1),iproc)
|
|
call psb_rcv(ictxt,ll,iproc)
|
|
endif
|
|
else if (iam /= root) then
|
|
|
|
if (iproc == iam) then
|
|
call psb_rcv(ictxt,nnr,root)
|
|
call psb_rcv(ictxt,ll,root)
|
|
if (ll > size(irow)) then
|
|
write(0,*) iam,'need to reallocate ',ll
|
|
deallocate(val,irow,icol)
|
|
allocate(val(ll),irow(ll),icol(ll),stat=info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='Allocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
endif
|
|
call psb_rcv(ictxt,irow(1:ll),root)
|
|
call psb_rcv(ictxt,icol(1:ll),root)
|
|
call psb_rcv(ictxt,val(1:ll),root)
|
|
call psb_rcv(ictxt,b_glob(i_count:i_count+nnr-1),root)
|
|
call psb_snd(ictxt,ll,root)
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(nnr,(/(i,i=i_count,i_count+nnr-1)/),&
|
|
& b_glob(i_count:i_count+nnr-1),b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
endif
|
|
endif
|
|
|
|
i_count = j_count
|
|
|
|
else
|
|
|
|
! here processors are counted 1..np
|
|
do j_count = 1, length_row
|
|
k_count = iwork(j_count)
|
|
if (iam == root) then
|
|
|
|
ll = 0
|
|
do i= i_count, i_count
|
|
call a_glob%csget(i,i,nz,&
|
|
& irow,icol,val,info,nzin=ll,append=.true.)
|
|
if (info /= 0) then
|
|
if (nz >min(size(irow(ll+1:)),size(icol(ll+1:)),size(val(ll+1:)))) then
|
|
write(0,*) 'Allocation failure? This should not happen!'
|
|
end if
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
ll = ll + nz
|
|
end do
|
|
|
|
if (k_count == iam) then
|
|
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
call psb_snd(ictxt,ll,k_count)
|
|
call psb_snd(ictxt,irow(1:ll),k_count)
|
|
call psb_snd(ictxt,icol(1:ll),k_count)
|
|
call psb_snd(ictxt,val(1:ll),k_count)
|
|
call psb_snd(ictxt,b_glob(i_count),k_count)
|
|
call psb_rcv(ictxt,ll,k_count)
|
|
endif
|
|
else if (iam /= root) then
|
|
if (k_count == iam) then
|
|
call psb_rcv(ictxt,ll,root)
|
|
call psb_rcv(ictxt,irow(1:ll),root)
|
|
call psb_rcv(ictxt,icol(1:ll),root)
|
|
call psb_rcv(ictxt,val(1:ll),root)
|
|
call psb_rcv(ictxt,b_glob(i_count),root)
|
|
call psb_snd(ictxt,ll,root)
|
|
call psb_spins(ll,irow,icol,val,a,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psspins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_geins(1,(/i_count/),b_glob(i_count:i_count),&
|
|
& b,desc_a,info)
|
|
if(info/=0) then
|
|
info=4010
|
|
ch_err='psdsins'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
endif
|
|
endif
|
|
end do
|
|
i_count = i_count + 1
|
|
endif
|
|
end do
|
|
|
|
if (present(fmt)) then
|
|
afmt=fmt
|
|
else
|
|
afmt = 'CSR'
|
|
endif
|
|
|
|
call psb_barrier(ictxt)
|
|
t0 = psb_wtime()
|
|
call psb_cdasb(desc_a,info)
|
|
t1 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_cdasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
call psb_barrier(ictxt)
|
|
t2 = psb_wtime()
|
|
call psb_spasb(a,desc_a,info,dupl=psb_dupl_err_,afmt=afmt)
|
|
t3 = psb_wtime()
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psb_spasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
|
|
if (iam == root) then
|
|
write(*,*) 'descriptor assembly: ',t1-t0
|
|
write(*,*) 'sparse matrix assembly: ',t3-t2
|
|
end if
|
|
|
|
call psb_geasb(b,desc_a,info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='psdsasb'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
deallocate(val,irow,icol,stat=info)
|
|
if(info/=0)then
|
|
info=4010
|
|
ch_err='deallocate'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
deallocate(iwork)
|
|
if (iam == root) write (*, fmt = *) 'end matdist'
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
if (err_act == psb_act_abort_) then
|
|
call psb_error(ictxt)
|
|
return
|
|
end if
|
|
return
|
|
|
|
end subroutine zmatdist
|
|
|
|
end module psb_mat_dist_mod
|