You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
231 lines
8.2 KiB
Fortran
231 lines
8.2 KiB
Fortran
!
|
|
! Parallel Sparse BLAS version 3.5
|
|
! (C) Copyright 2006-2018
|
|
! Salvatore Filippone
|
|
! Alfredo Buttari
|
|
!
|
|
! Redistribution and use in source and binary forms, with or without
|
|
! modification, are permitted provided that the following conditions
|
|
! are met:
|
|
! 1. Redistributions of source code must retain the above copyright
|
|
! notice, this list of conditions and the following disclaimer.
|
|
! 2. Redistributions in binary form must reproduce the above copyright
|
|
! notice, this list of conditions, and the following disclaimer in the
|
|
! documentation and/or other materials provided with the distribution.
|
|
! 3. The name of the PSBLAS group or the names of its contributors may
|
|
! not be used to endorse or promote products derived from this
|
|
! software without specific written permission.
|
|
!
|
|
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
|
|
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
! POSSIBILITY OF SUCH DAMAGE.
|
|
!
|
|
!
|
|
subroutine psi_i_xtr_loc_dl(ictxt,is_bld,is_upd,desc_str,loc_dl,length_dl,info)
|
|
|
|
! internal routine
|
|
! == = =============
|
|
!
|
|
! _____called by psi_crea_halo and psi_crea_ovrlap ______
|
|
!
|
|
! purpose
|
|
! == = ====
|
|
! process root (pid=0) extracts for each process "k" the ordered list of process
|
|
! to which "k" must communicate. this list with its order is extracted from
|
|
! desc_str list
|
|
!
|
|
!
|
|
! input
|
|
! == = ====
|
|
! desc_data :integer array
|
|
! explanation:
|
|
! name explanation
|
|
! ------------------ -------------------------------------------------------
|
|
! desc_data array of integer that contains some local and global
|
|
! information of matrix.
|
|
!
|
|
!
|
|
! now we explain each of the above vectors.
|
|
!
|
|
! let a be a generic sparse matrix. we denote with matdata_a the matrix_data
|
|
! array for matrix a.
|
|
! data stored in matrix_data array are:
|
|
!
|
|
! notation stored in explanation
|
|
! --------------- ---------------------- -------------------------------------
|
|
! dec_type matdata_a[psb_dec_type_] decomposition type
|
|
! m matdata_a[m_] total number of equations
|
|
! n matdata_a[n_] total number of variables
|
|
! n_row matdata_a[psb_n_row_] number of local equations
|
|
! n_col matdata_a[psb_n_col_] number of local variables
|
|
! psb_ctxt_a matdata_a[ctxt_] the blacs context handle, indicating
|
|
! the global context of the operation
|
|
! on the matrix.
|
|
! the context itself is global.
|
|
! desc_str integer array
|
|
! explanation:
|
|
! let desc_str_p be the array desc_str for local process.
|
|
!! this is composed of variable dimension blocks for each process to
|
|
! communicate to.
|
|
! each block contain indexes of local halo elements to exchange with other
|
|
! process.
|
|
! let p be the pointer to the first element of a block in desc_str_p.
|
|
! this block is stored in desc_str_p as :
|
|
!
|
|
! notation stored in explanation
|
|
! --------------- --------------------------- -----------------------------------
|
|
! process_id desc_str_p[p+psb_proc_id_] identifier of process which exchange
|
|
! data with.
|
|
! n_elements_recv desc_str_p[p+n_elem_recv_] number of elements to receive.
|
|
! elements_recv desc_str_p[p+elem_recv_+i] indexes of local elements to
|
|
! receive. these are stored in the
|
|
! array from location p+elem_recv_ to
|
|
! location p+elem_recv_+
|
|
! desc_str_p[p+n_elem_recv_]-1.
|
|
! if desc_data(psb_dec_type_) == 0
|
|
! then also will be:
|
|
! n_elements_send desc_str_p[p+n_elem_send_] number of elements to send.
|
|
! elements_send desc_str_p[p+elem_send_+i] indexes of local elements to
|
|
! send. these are stored in the
|
|
! array from location p+elem_send_ to
|
|
! location p+elem_send_+
|
|
! desc_str_p[p+n_elem_send_]-1.
|
|
! list is ended by -1 value
|
|
!
|
|
! np integer (global input)
|
|
! number of grid process.
|
|
!
|
|
! output
|
|
! == = ==
|
|
! loc_dl integer array(:)
|
|
! dependence list of current process
|
|
!
|
|
use psi_mod, psb_protect_name => psi_i_xtr_loc_dl
|
|
#ifdef MPI_MOD
|
|
use mpi
|
|
#endif
|
|
use psb_penv_mod
|
|
use psb_const_mod
|
|
use psb_error_mod
|
|
use psb_desc_mod
|
|
use psb_sort_mod
|
|
implicit none
|
|
#ifdef MPI_H
|
|
include 'mpif.h'
|
|
#endif
|
|
! ....scalar parameters...
|
|
logical, intent(in) :: is_bld, is_upd
|
|
integer(psb_ipk_), intent(in) :: ictxt
|
|
integer(psb_ipk_), intent(in) :: desc_str(:)
|
|
integer(psb_ipk_), allocatable, intent(out) :: loc_dl(:), length_dl(:)
|
|
integer(psb_ipk_), intent(out) :: info
|
|
! .....local arrays....
|
|
integer(psb_ipk_) :: int_err(5)
|
|
|
|
! .....local scalars...
|
|
integer(psb_ipk_) :: i,pdl,proc,j,err_act, ldu
|
|
integer(psb_ipk_) :: err
|
|
integer(psb_ipk_) :: debug_level, debug_unit
|
|
integer(psb_mpk_) :: iictxt, icomm, me, np, minfo
|
|
logical, parameter :: dist_symm_list=.true., print_dl=.false., profile=.true.
|
|
character name*20
|
|
name='psi_extrct_dl'
|
|
|
|
call psb_erractionsave(err_act)
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
iictxt = ictxt
|
|
info = psb_success_
|
|
|
|
call psb_info(iictxt,me,np)
|
|
pdl = size(desc_str)
|
|
allocate(loc_dl(pdl+1),length_dl(0:np),stat=info)
|
|
if (info /= psb_success_) then
|
|
info=psb_err_alloc_dealloc_
|
|
goto 9999
|
|
end if
|
|
|
|
if (debug_level >= psb_debug_inner_)&
|
|
& write(debug_unit,*) me,' ',trim(name),': start ',info
|
|
|
|
loc_dl = -1
|
|
i = 1
|
|
pdl = 0
|
|
if (is_bld) then
|
|
do while (desc_str(i) /= -1)
|
|
if (debug_level >= psb_debug_inner_)&
|
|
& write(debug_unit,*) me,' ',trim(name),' : looping ',i,&
|
|
& desc_str(i),desc_str(i+1),desc_str(i+2)
|
|
|
|
! ...with different decomposition type we have different
|
|
! structure of indices lists............................
|
|
if ((desc_str(i+1) /= 0).or.(desc_str(i+2) /= 0)) then
|
|
! ..if number of element to be exchanged !=0
|
|
proc=desc_str(i)
|
|
if ((proc < 0).or.(proc >= np)) then
|
|
if (debug_level >= psb_debug_inner_)&
|
|
& write(debug_unit,*) me,' ',trim(name),': error ',i,desc_str(i)
|
|
info = 9999
|
|
int_err(1) = i
|
|
int_err(2) = desc_str(i)
|
|
goto 9999
|
|
endif
|
|
! if((me == 1).and.(proc == 3))write(psb_err_unit,*)'found 3'
|
|
pdl=pdl+1
|
|
loc_dl(pdl)=proc
|
|
endif
|
|
i=i+desc_str(i+1)+2
|
|
enddo
|
|
|
|
else if (is_upd) then
|
|
|
|
do while (desc_str(i) /= -1)
|
|
if (debug_level >= psb_debug_inner_) &
|
|
& write(debug_unit,*) me,' ',trim(name),': looping ',i,desc_str(i)
|
|
|
|
! ...with different decomposition type we have different
|
|
! structure of indices lists............................
|
|
if (desc_str(i+1) /= 0) then
|
|
|
|
proc=desc_str(i)
|
|
! ..if number of element to be exchanged !=0
|
|
pdl=pdl+1
|
|
loc_dl(pdl)=proc
|
|
endif
|
|
i=i+desc_str(i+1)+2
|
|
enddo
|
|
|
|
else
|
|
info = 2020
|
|
goto 9999
|
|
endif
|
|
call psb_msort_unique(loc_dl(1:pdl),ldu)
|
|
pdl = ldu
|
|
call psb_realloc(pdl,loc_dl,info)
|
|
call psi_symm_dep_list(loc_dl,ictxt,info)
|
|
pdl = size(loc_dl)
|
|
length_dl = 0
|
|
length_dl(me) = pdl
|
|
call psb_sum(ictxt,length_dl)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
|
|
9999 continue
|
|
|
|
call psb_errpush(info,name,i_err=int_err)
|
|
call psb_error_handler(err_act)
|
|
|
|
return
|
|
|
|
end subroutine psi_i_xtr_loc_dl
|