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158 lines
5.1 KiB
Fortran
158 lines
5.1 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS version 3.0
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!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010
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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
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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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!
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! File: psi_bld_tmpovrl.f90
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!
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! Subroutine: psi_bld_tmpovrl
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! Build initial versions of overlap exchange lists.
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! When the descriptor is for a large index space, we cannot build
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! the data exchange lists "on-the-fly", but we also want to keep using the
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! same format conversion routines we use in the small index space case,
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! hence this adapter routine.
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!
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!
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! Arguments:
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! iv(:) - integer Initial list.
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! index
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! nprocs (sharing it)
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! procs(1:nprocs)
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! End marked with -1
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!
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! desc - type(psb_desc_type). The communication descriptor.
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! info - integer. return code.
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!
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subroutine psi_bld_tmpovrl(iv,desc,info)
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use psb_descriptor_type
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use psb_serial_mod
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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_realloc_mod
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use psi_mod, psb_protect_name => psi_bld_tmpovrl
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implicit none
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integer, intent(in) :: iv(:)
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type(psb_desc_type), intent(inout) :: desc
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integer, intent(out) :: info
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!locals
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Integer :: counter,i,j,np,me,loc_row,err,loc_col,nprocs,&
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& l_ov_ix,l_ov_el,idx, err_act, itmpov, k, glx, icomm
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integer, allocatable :: ov_idx(:),ov_el(:,:)
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integer :: ictxt,n_row, debug_unit, debug_level
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character(len=20) :: name,ch_err
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info = psb_success_
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name = 'psi_bld_tmpovrl'
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call psb_erractionsave(err_act)
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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ictxt = desc%get_context()
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icomm = desc%get_mpic()
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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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l_ov_ix=0
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l_ov_el=0
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i = 1
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do while (iv(i) /= -1)
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idx = iv(i)
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i = i + 1
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nprocs = iv(i)
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i = i + 1
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l_ov_ix = l_ov_ix+3*(nprocs-1)
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l_ov_el = l_ov_el + 1
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i = i + nprocs
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enddo
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l_ov_ix = l_ov_ix+3
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if (debug_level >= psb_debug_inner_) &
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& write(debug_unit,*) me,' ',trim(name),': Ov len',l_ov_ix,l_ov_el
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allocate(ov_idx(l_ov_ix),ov_el(l_ov_el,3), stat=info)
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if (info /= psb_no_err_) then
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info=psb_err_from_subroutine_
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err=info
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call psb_errpush(err,name,a_err='psb_realloc')
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goto 9999
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end if
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l_ov_ix=0
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l_ov_el=0
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i = 1
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do while (iv(i) /= -1)
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idx = iv(i)
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i = i+1
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nprocs = iv(i)
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l_ov_el = l_ov_el+1
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ov_el(l_ov_el,1) = idx ! Index
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ov_el(l_ov_el,2) = nprocs ! How many procs
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ov_el(l_ov_el,3) = minval(iv(i+1:i+nprocs)) ! master proc
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do j=1, nprocs
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if (iv(i+j) /= me) then
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ov_idx(l_ov_ix+1) = iv(i+j)
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ov_idx(l_ov_ix+2) = 1
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ov_idx(l_ov_ix+3) = idx
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l_ov_ix = l_ov_ix+3
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endif
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enddo
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i = i + nprocs + 1
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enddo
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l_ov_ix = l_ov_ix + 1
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ov_idx(l_ov_ix) = -1
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call psb_move_alloc(ov_idx,desc%ovrlap_index,info)
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if (info == psb_success_) call psb_move_alloc(ov_el,desc%ovrlap_elem,info)
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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 psi_bld_tmpovrl
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