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.
135 lines
4.2 KiB
Fortran
135 lines
4.2 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.
|
|
!
|
|
!
|
|
!
|
|
! Compute maximum data exchange size; small utility for assembly of descriptors.
|
|
!
|
|
subroutine psi_compute_size(desc_data, index_in, dl_lda, info)
|
|
|
|
use psi_mod, psb_protect_name => psi_compute_size
|
|
use psb_const_mod
|
|
use psb_desc_mod
|
|
use psb_error_mod
|
|
use psb_penv_mod
|
|
implicit none
|
|
|
|
! ....scalars parameters....
|
|
integer(psb_ipk_) :: info, dl_lda
|
|
! .....array parameters....
|
|
integer(psb_ipk_) :: desc_data(:), index_in(:)
|
|
! ....local scalars....
|
|
integer(psb_ipk_) :: i,np,me,proc, max_index
|
|
integer(psb_ipk_) :: err_act
|
|
type(psb_ctxt_type) :: ictxt
|
|
! ...local array...
|
|
integer(psb_ipk_) :: int_err(5)
|
|
integer(psb_ipk_), allocatable :: counter_recv(:), counter_dl(:)
|
|
|
|
! ...parameters
|
|
integer(psb_ipk_) :: debug_level, debug_unit
|
|
character(len=20) :: name
|
|
|
|
name='psi_compute_size'
|
|
call psb_get_erraction(err_act)
|
|
debug_unit = psb_get_debug_unit()
|
|
debug_level = psb_get_debug_level()
|
|
|
|
info = psb_success_
|
|
ictxt = desc_data(psb_ctxt_)
|
|
|
|
call psb_info(ictxt,me,np)
|
|
if (np == -1) then
|
|
info = psb_err_context_error_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
allocate(counter_dl(0:np-1),counter_recv(0:np-1),stat=info)
|
|
if (info /= psb_success_) then
|
|
call psb_errpush(psb_err_from_subroutine_,name,a_err='Allocate')
|
|
goto 9999
|
|
end if
|
|
|
|
! ..initialize counters...
|
|
do i=0,np-1
|
|
counter_recv(i)=0
|
|
counter_dl(i)=0
|
|
enddo
|
|
|
|
! ....verify local correctness of halo_in....
|
|
i=1
|
|
do while (index_in(i) /= -1)
|
|
proc=index_in(i)
|
|
if ((proc > np-1).or.(proc < 0)) then
|
|
info = psb_err_invalid_pid_arg_
|
|
int_err(1) = 11
|
|
int_err(2) = proc
|
|
call psb_errpush(info,name,i_err=int_err)
|
|
goto 9999
|
|
endif
|
|
counter_dl(proc)=1
|
|
|
|
! ..update no of elements to receive from proc proc..
|
|
counter_recv(proc)=counter_recv(proc)+&
|
|
& index_in(i+1)
|
|
|
|
i=i+index_in(i+1)+2
|
|
enddo
|
|
|
|
! ...computing max_halo: max halo points to be received from
|
|
! same processor
|
|
max_index=0
|
|
dl_lda=0
|
|
|
|
do i=0,np-1
|
|
if (counter_recv(i) > max_index) max_index = counter_recv(i)
|
|
if (counter_dl(i) == 1) dl_lda = dl_lda+1
|
|
enddo
|
|
|
|
! computing max global value of dl_lda
|
|
call psb_amx(ictxt, dl_lda)
|
|
|
|
if (debug_level>=psb_debug_inner_) then
|
|
write(debug_unit,*) me,' ',trim(name),': ',dl_lda
|
|
endif
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ictxt,err_act)
|
|
|
|
return
|
|
|
|
end subroutine psi_compute_size
|
|
|
|
|
|
|