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235 lines
7.2 KiB
Fortran
235 lines
7.2 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the PSBLAS group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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! File: psb_cdren.f90
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!
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! WARNING: this routine is almost certainly obsolete. Must be reviewed.
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!
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! Subroutine: psb_cdren
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! Updates a communication descriptor according to a renumbering scheme.
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!
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! Arguments:
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! trans - character. Whether iperm or its transpose
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! should be applied.
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! iperm - integer,dimension(:). The renumbering scheme.
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! desc_a - type(<psb_desc_type>). The communication descriptor
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! to be updated.
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! info - integer. Return code
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!
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subroutine psb_cdren(trans,iperm,desc_a,info)
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use psb_descriptor_type
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use psb_const_mod
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use psb_error_mod
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use psb_penv_mod
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use psb_string_mod
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implicit none
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interface isaperm
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logical function isaperm(n,ip)
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integer, intent(in) :: n
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integer, intent(inout) :: ip(*)
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end function isaperm
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end interface
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!...parameters....
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type(psb_desc_type), intent(inout) :: desc_a
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integer, intent(inout) :: iperm(:)
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character, intent(in) :: trans
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integer, intent(out) :: info
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!....locals....
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integer :: i,j,np,me, n_col, kh, nh
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integer :: dectype
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integer :: ictxt,n_row, int_err(5), err_act
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real(kind(1.d0)) :: time(10)
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logical, parameter :: debug=.false.
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character(len=20) :: name
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if(psb_get_errstatus() /= 0) return
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info=0
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call psb_erractionsave(err_act)
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name = 'psb_dcren'
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time(1) = psb_wtime()
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ictxt = psb_cd_get_context(desc_a)
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dectype = psb_cd_get_dectype(desc_a)
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n_row = psb_cd_get_local_rows(desc_a)
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n_col = psb_cd_get_local_cols(desc_a)
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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 = 2010
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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 (.not.psb_is_asb_desc(desc_a)) then
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info = 600
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int_err(1) = dectype
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call psb_errpush(info,name,int_err)
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goto 9999
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endif
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if (iperm(1) /= 0) then
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if (.not.isaperm(n_row,iperm)) then
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info = 610
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int_err(1) = iperm(1)
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call psb_errpush(info,name,int_err)
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goto 9999
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endif
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endif
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if (debug) write (*, *) ' begin matrix assembly...'
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!check on errors encountered in psdspins
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if ((iperm(1) /= 0)) then
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if (debug) write(0,*) 'spasb: here we go with ',iperm(1)
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deallocate(desc_a%lprm)
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allocate(desc_a%lprm(n_col))
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if (toupper(trans) == 'N') then
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do i=1, n_row
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desc_a%lprm(iperm(i)) = i
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enddo
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do i=n_row+1,n_col
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desc_a%lprm(i) = i
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enddo
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else if (toupper(trans) == 'T') then
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do i=1, n_row
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desc_a%lprm(i) = iperm(i)
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enddo
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do i=n_row+1,n_col
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desc_a%lprm(i) = i
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enddo
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endif
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! crossed fingers.....
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! fix glob_to_loc/loc_to_glob mappings, then indices lists
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! hmm, maybe we should just moe all of this onto a different level,
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! have a specialized subroutine, and do it in the solver context????
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if (debug) write(0,*) 'spasb: renumbering glob_to_loc'
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do i=1, n_col
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desc_a%glob_to_loc(desc_a%loc_to_glob(desc_a%lprm(i))) = i
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enddo
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if (debug) write(0,*) 'spasb: renumbering loc_to_glob'
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do i=1,psb_cd_get_global_rows(desc_a)
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j = desc_a%glob_to_loc(i)
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if (j>0) then
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desc_a%loc_to_glob(j) = i
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endif
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enddo
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if (debug) write(0,*) 'spasb: renumbering halo_index'
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i=1
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kh=desc_a%halo_index(i)
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do while (kh /= -1)
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i = i+1
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nh = desc_a%halo_index(i)
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do j = i+1, i+nh
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desc_a%halo_index(j) = &
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&desc_a%lprm(desc_a%halo_index(j))
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enddo
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i = i + nh + 1
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nh = desc_a%halo_index(i)
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do j= i+1, i+nh
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desc_a%halo_index(j) = &
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&desc_a%lprm(desc_a%halo_index(j))
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enddo
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i = i + nh + 1
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kh=desc_a%halo_index(i)
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enddo
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if (debug) write(0,*) 'spasb: renumbering ovrlap_index'
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i=1
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kh=desc_a%ovrlap_index(i)
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do while (kh /= -1)
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i = i + 1
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nh = desc_a%ovrlap_index(i)
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do j= i+1, i+nh
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desc_a%ovrlap_index(j) = &
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&desc_a%lprm(desc_a%ovrlap_index(j))
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enddo
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i = i + nh + 1
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kh=desc_a%ovrlap_index(i)
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enddo
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if (debug) write(0,*) 'spasb: renumbering ovrlap_elem'
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i = 1
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kh=desc_a%ovrlap_elem(i)
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do while (kh /= -1)
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desc_a%ovrlap_elem(i) = &
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&desc_a%lprm(desc_a%ovrlap_elem(i))
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i = i+2
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kh=desc_a%ovrlap_elem(i)
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enddo
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if (debug) write(0,*) 'spasb: done renumbering'
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if (debug) then
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write(60+me,*) 'n_row ',n_row,' n_col',n_col, ' trans: ',trans
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do i=1,n_col
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write(60+me,*)i, ' lprm ', desc_a%lprm(i), ' iperm',iperm(i)
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enddo
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i=1
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kh = desc_a%halo_index(i)
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do while (kh /= -1)
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write(60+me,*) i, kh
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i = i+1
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kh = desc_a%halo_index(i)
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enddo
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close(60+me)
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end if
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!!$ iperm(1) = 0
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else
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!!$ allocate(desc_a%lprm(1))
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!!$ desc_a%lprm(1) = 0
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endif
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time(4) = psb_wtime()
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time(4) = time(4) - time(3)
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if (debug) then
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call psb_amx(ictxt, time(4))
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write (*, *) ' comm structs assembly: ', time(4)*1.d-3
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end if
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act == psb_act_ret_) then
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return
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else
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call psb_error(ictxt)
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end if
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return
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end subroutine psb_cdren
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