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psblas3/base/tools/psb_icdasb.F90

198 lines
6.6 KiB
Fortran

!!$
!!$ Parallel Sparse BLAS version 2.2
!!$ (C) Copyright 2006/2007/2008
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$
!!$ 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.
!!$
!!$
! File: psb_icdasb.f90
!
! Subroutine: psb_icdasb
! Assemble the psblas communications descriptor: inner part.
! The user callable routine is defined in the psb_tools_mod module.
!
! Arguments:
! desc_a - type(psb_desc_type). The communication descriptor.
! info - integer. return code.
! ext_hv - logical Essentially this distinguishes a call
! coming from the build of an extended
! halo descriptor with respect to a normal call.
!
subroutine psb_icdasb(desc_a,info,ext_hv)
use psb_sparse_mod, psb_protect_name => psb_icdasb
use psi_mod
#ifdef MPI_MOD
use mpi
#endif
implicit none
#ifdef MPI_H
include 'mpif.h'
#endif
!...Parameters....
type(psb_desc_type), intent(inout) :: desc_a
integer, intent(out) :: info
logical, intent(in), optional :: ext_hv
!....Locals....
integer :: int_err(5)
integer,allocatable :: ovrlap_index(:),halo_index(:), ext_index(:)
integer :: i,np,me, n_col, dectype, err_act, icomm
integer :: ictxt,n_row
logical :: ext_hv_
integer :: debug_level, debug_unit
character(len=20) :: name
info = psb_success_
int_err(1) = 0
name = 'psb_cdasb'
call psb_erractionsave(err_act)
debug_unit = psb_get_debug_unit()
debug_level = psb_get_debug_level()
ictxt = psb_cd_get_context(desc_a)
dectype = psb_cd_get_dectype(desc_a)
n_row = psb_cd_get_local_rows(desc_a)
n_col = psb_cd_get_local_cols(desc_a)
call psb_get_mpicomm(ictxt,icomm )
! check on blacs grid
call psb_info(ictxt, me, np)
if (np == -1) then
info = psb_err_context_error_
call psb_errpush(info,name)
goto 9999
endif
if (.not.psb_is_ok_desc(desc_a)) then
info = psb_err_spmat_invalid_state_
int_err(1) = dectype
call psb_errpush(info,name)
goto 9999
endif
info = psb_get_errstatus()
if (info /= psb_success_) then
! Something went wrong in cdins/spins
! signal and exit
info = psb_err_wrong_ins_
call psb_errpush(info,name)
goto 9999
end if
if (present(ext_hv)) then
ext_hv_ = ext_hv
else
ext_hv_ = .false.
end if
if (debug_level >= psb_debug_ext_) &
& write(debug_unit, *) me,' ',trim(name),': start'
if (psb_is_bld_desc(desc_a)) then
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),': Checking rows insertion'
!
! check if all local row are inserted
! Note: this may still be useful for the case of
! cdall(..., vl=vl, globalcheck=.false.)
!
do i=1,psb_cd_get_local_cols(desc_a)
if (desc_a%idxmap%loc_to_glob(i) < 0) then
info=3100
exit
endif
enddo
if (info /= psb_no_err_) then
call psb_errpush(info,name,i_err=int_err)
goto 9999
endif
! Trim size of loc_to_glob component.
call psb_realloc(psb_cd_get_local_cols(desc_a),desc_a%idxmap%loc_to_glob,info)
! If large index space, we have to pre-process and rebuild
! the list of halo indices as if it was in small index space
if (psb_is_large_desc(desc_a)) then
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),&
& ': Large descriptor, calling ldsc_pre_halo'
call psi_ldsc_pre_halo(desc_a,ext_hv_,info)
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='ldsc_pre_halo')
goto 9999
end if
end if
! Take out the lists for ovrlap, halo and ext...
call psb_move_alloc(desc_a%ovrlap_index,ovrlap_index,info)
call psb_move_alloc(desc_a%halo_index,halo_index,info)
call psb_move_alloc(desc_a%ext_index,ext_index,info)
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),': Final conversion'
! Then convert and put them back where they belong.
call psi_cnv_dsc(halo_index,ovrlap_index,ext_index,desc_a,info)
if (info /= psb_success_) then
call psb_errpush(psb_err_from_subroutine_,name,a_err='psi_cnv_dsc')
goto 9999
end if
deallocate(ovrlap_index, halo_index, ext_index, stat=info)
if (info /= psb_success_) then
info =psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
end if
! Ok, register into MATRIX_DATA
desc_a%matrix_data(psb_dec_type_) = psb_desc_asb_
else
info = psb_err_spmat_invalid_state_
call psb_errpush(info,name)
goto 9999
endif
if (debug_level >= psb_debug_ext_) &
& write(debug_unit,*) me,' ',trim(name),': Done'
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_ret_) then
return
else
call psb_error(ictxt)
end if
return
end subroutine psb_icdasb