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227 lines
6.6 KiB
Fortran
227 lines
6.6 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.5
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! (C) Copyright 2006-2018
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! Salvatore Filippone
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! Alfredo Buttari
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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! File: psb_cdalv.f90
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!
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! Subroutine: psb_cdalv
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! Allocate descriptor by means of a global map vector V: index I
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! is assigned to process V(I). It is assumed that V is identical
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! on all calling processes.
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!
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!
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! Arguments:
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! v - integer(psb_ipk_), dimension(:). The array containg the partitioning scheme.
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! ictxt - integer. The communication context.
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! desc - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! flag - integer. Are V's contents 0- or 1-based?
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subroutine psb_cdalv(v, ictxt, desc, info, flag)
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use psb_base_mod
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use psi_mod
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use psb_repl_map_mod
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use psb_glist_map_mod
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use psb_hash_map_mod
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implicit None
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!....Parameters...
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type(psb_ctxt_type) :: ictxt
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integer(psb_ipk_), intent(in) :: v(:)
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integer(psb_ipk_), intent(in), optional :: flag
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integer(psb_ipk_), intent(out) :: info
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type(psb_desc_type), intent(out) :: desc
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!locals
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integer(psb_ipk_) :: counter,j,np,me,loc_row,err,&
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& loc_col,nprocs,itmpov, k,glx,&
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& l_ov_ix,l_ov_el,idx, flag_, err_act
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integer(psb_lpk_) :: m,n,i,exch(3)
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integer(psb_lpk_) :: l_err(5)
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integer(psb_ipk_), allocatable :: temp_ovrlap(:)
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integer(psb_ipk_) :: debug_level, debug_unit
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character(len=20) :: name
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if(psb_get_errstatus() /= 0) return
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debug_unit = psb_get_debug_unit()
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debug_level = psb_get_debug_level()
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info = psb_success_
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err = 0
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name = 'psb_cdalv'
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call psb_info(ictxt, me, np)
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if (debug_level >= psb_debug_ext_) &
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& write(debug_unit,*) me,' ',trim(name),': ',np,me
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m = size(v)
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n = m
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!... check m and n parameters....
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if (m < 1) then
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info = psb_err_iarg_neg_
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l_err(1) = 1
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l_err(2) = m
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else if (n < 1) then
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info = psb_err_iarg_neg_
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l_err(1) = 2
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l_err(2) = n
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else if (size(v)<m) then
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info = psb_err_iarg_neg_
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l_err(1) = 2
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l_err(2) = size(v)
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endif
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if (info /= psb_success_) then
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call psb_errpush(info,name,l_err=l_err)
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goto 9999
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end if
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if (me == psb_root_) then
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exch(1)=m
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exch(2)=n
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exch(3)=psb_cd_get_large_threshold()
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call psb_bcast(ictxt,exch(1:3),root=psb_root_)
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else
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call psb_bcast(ictxt,exch(1:3),root=psb_root_)
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if (exch(1) /= m) then
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err=550
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l_err(1)=1
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call psb_errpush(err,name,l_err=l_err)
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goto 9999
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else if (exch(2) /= n) then
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err=550
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l_err(1)=2
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call psb_errpush(err,name,l_err=l_err)
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goto 9999
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endif
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call psb_cd_set_large_threshold(exch(3))
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endif
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call psb_nullify_desc(desc)
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if (present(flag)) then
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flag_=flag
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else
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flag_=0
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endif
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if ((flag_<0).or.(flag_>1)) then
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info = 6
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call psb_errpush(info,name)
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goto 9999
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end if
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! count local rows number
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loc_row = max(1,(m+np-1)/np)
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! allocate work vector
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allocate(temp_ovrlap(2),stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_request_
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l_err(1)=2*m+psb_mdata_size_
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call psb_errpush(info,name,l_err=l_err,a_err='integer')
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goto 9999
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endif
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if (debug_level >= psb_debug_ext_) &
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& write(debug_unit,*) me,' ',trim(name),': starting main loop' ,info
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counter = 0
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itmpov = 0
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temp_ovrlap(:) = -1
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do i=1,m
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if (((v(i)-flag_) > np-1).or.((v(i)-flag_) < 0)) then
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info=psb_err_partfunc_wrong_pid_
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l_err(1)=3
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l_err(2)=v(i) - flag_
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l_err(3)=i
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exit
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end if
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if ((v(i)-flag_) == me) then
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! this point belongs to me
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counter=counter+1
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end if
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enddo
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if (info /= psb_success_) then
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call psb_errpush(info,name,l_err=l_err)
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goto 9999
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endif
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loc_row=counter
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!
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! We have to decide whether we have a "large" index space.
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!
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if (np == 1) then
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allocate(psb_repl_map :: desc%indxmap, stat=info)
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else
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if (psb_cd_choose_large_state(ictxt,m)) then
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allocate(psb_hash_map :: desc%indxmap, stat=info)
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if (info == 0) allocate(desc%indxmap%tempvg(m),stat=info)
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if (info ==0) desc%indxmap%tempvg(1:m) = v(1:m) - flag_
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else
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allocate(psb_glist_map :: desc%indxmap, stat=info)
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end if
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end if
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select type(aa => desc%indxmap)
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type is (psb_repl_map)
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call aa%repl_map_init(ictxt,m,info)
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type is (psb_hash_map)
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call aa%hash_map_init(ictxt,v,info)
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type is (psb_glist_map)
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call aa%glist_map_init(ictxt,v,info)
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class default
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! This cannot happen
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info = psb_err_internal_error_
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call psb_errpush(info,name)
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Goto 9999
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end select
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call psi_bld_tmpovrl(temp_ovrlap,desc,info)
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deallocate(temp_ovrlap,stat=info)
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if (info /= psb_success_) then
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info=psb_err_alloc_dealloc_
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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 (debug_level >= psb_debug_ext_) &
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& write(debug_unit,*) me,' ',trim(name),': end'
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ictxt,err_act)
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return
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end subroutine psb_cdalv
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