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.
psblas3/prec/psb_ddiagsc_bld.f90

134 lines
4.1 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.
!!$
!!$
subroutine psb_ddiagsc_bld(a,desc_a,p,upd,info)
use psb_base_mod
use psb_prec_mod, psb_protect_name => psb_ddiagsc_bld
Implicit None
psblas3: Changelog LICENSE Make.inc.in README base/Makefile base/internals/psi_bld_tmphalo.f90 base/internals/psi_bld_tmpovrl.f90 base/internals/psi_crea_bnd_elem.f90 base/internals/psi_crea_index.f90 base/internals/psi_crea_ovr_elem.f90 base/internals/psi_fnd_owner.F90 base/modules/Makefile base/modules/psb_base_mod.f90 base/modules/psb_desc_type.f90 base/modules/psb_hash_mod.f90 base/modules/psb_linmap_mod.f90 base/modules/psb_linmap_type_mod.f90 base/modules/psb_penv_mod.F90 base/modules/psb_psblas_mod.f90 base/modules/psb_realloc_mod.F90 base/modules/psb_serial_mod.f90 base/modules/psb_sort_mod.f90 base/modules/psb_spmat_type.f03 base/modules/psb_spmat_type.f90 base/modules/psb_tools_mod.f90 base/modules/psi_mod.f90 base/psblas/Makefile base/psblas/psb_cspmm.f90 base/psblas/psb_dspmm.f90 base/psblas/psb_sspmm.f90 base/psblas/psb_zspmm.f90 base/serial/Makefile base/serial/aux/Makefile base/serial/psb_ccoins.f90 base/serial/psb_ccsprt.f90 base/serial/psb_cgelp.f90 base/serial/psb_cipcoo2csc.f90 base/serial/psb_cipcoo2csr.f90 base/serial/psb_cipcsr2coo.f90 base/serial/psb_cneigh.f90 base/serial/psb_ctransc.f90 base/serial/psb_ctransp.f90 base/serial/psb_dcoins.f90 base/serial/psb_dcsmm.f90 base/serial/psb_dcsprt.f90 base/serial/psb_dcsrp.f90 base/serial/psb_dgelp.f90 base/serial/psb_dipcoo2csc.f90 base/serial/psb_dipcoo2csr.f90 base/serial/psb_dipcsr2coo.f90 base/serial/psb_dneigh.f90 base/serial/psb_dtransp.f90 base/serial/psb_getrow_mod.f90 base/serial/psb_scoins.f90 base/serial/psb_scsnmi.f90 base/serial/psb_scsprt.f90 base/serial/psb_sgelp.f90 base/serial/psb_sipcoo2csc.f90 base/serial/psb_sipcoo2csr.f90 base/serial/psb_sipcsr2coo.f90 base/serial/psb_sneigh.f90 base/serial/psb_stransp.f90 base/serial/psb_update_mod.f90 base/serial/psb_zcoins.f90 base/serial/psb_zcsprt.f90 base/serial/psb_zcsrp.f90 base/serial/psb_zgelp.f90 base/serial/psb_zipcoo2csc.f90 base/serial/psb_zipcoo2csr.f90 base/serial/psb_zipcsr2coo.f90 base/serial/psb_zneigh.f90 base/serial/psb_ztransc.f90 base/serial/psb_ztransp.f90 base/tools/Makefile base/tools/psb_ccdbldext.F90 base/tools/psb_cd_lstext.f90 base/tools/psb_cd_reinit.f90 base/tools/psb_cdals.f90 base/tools/psb_cdren.f90 base/tools/psb_dcdbldext.F90 base/tools/psb_icdasb.F90 base/tools/psb_inter_desc.f90 base/tools/psb_linmap.f90 base/tools/psb_map.f90 base/tools/psb_scdbldext.F90 base/tools/psb_zcdbldext.F90 config/pac.m4 configure.ac configure krylov/psb_scgstab.F90 prec/psb_cdiagsc_bld.f90 prec/psb_cprc_aply.f90 prec/psb_cprecbld.f90 prec/psb_ddiagsc_bld.f90 prec/psb_dprc_aply.f90 prec/psb_dprecbld.f90 prec/psb_sdiagsc_bld.f90 prec/psb_sprc_aply.f90 prec/psb_sprecbld.f90 prec/psb_zdiagsc_bld.f90 prec/psb_zprc_aply.f90 prec/psb_zprecbld.f90 test/fileread/cf_sample.f90 test/fileread/df_sample.f90 test/fileread/sf_sample.f90 test/fileread/zf_sample.f90 test/pargen/ppde.f90 test/pargen/runs/ppde.inp test/pargen/spde.f90 util/psb_mat_dist_mod.f90 psblas3: first batch of changes to accommodate NAG compiler. Now the real work is about to start...
16 years ago
type(psb_dspmat_type), intent(in), target :: a
type(psb_desc_type), intent(in) :: desc_a
type(psb_dprec_type),intent(inout) :: p
character, intent(in) :: upd
integer, intent(out) :: info
! Local scalars
Integer :: err, n_row, n_col,I,ictxt,&
& me,np,mglob, err_act
integer :: int_err(5)
integer,parameter :: iroot=psb_root_,iout=60,ilout=40
character(len=20) :: name, ch_err
if(psb_get_errstatus() /= 0) return
info=0
err=0
call psb_erractionsave(err_act)
name = 'psb_diagsc_bld'
info = 0
int_err(1) = 0
ictxt = psb_cd_get_context(desc_a)
n_row = psb_cd_get_local_rows(desc_a)
n_col = psb_cd_get_local_cols(desc_a)
mglob = psb_cd_get_global_rows(desc_a)
call psb_info(ictxt, me, np)
! diagonal scaling
call psb_realloc(n_col,p%d,info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='psb_realloc')
goto 9999
end if
!
! Retrieve the diagonal entries of the matrix A
!
call psb_sp_getdiag(a,p%d,info)
if(info /= 0) then
info=4010
ch_err='psb_sp_getdiag'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
!
! Copy into p%desc_data the descriptor associated to A
!
call psb_cdcpy(desc_a,p%desc_Data,info)
if (info /= 0) then
call psb_errpush(4010,name,a_err='psb_cdcpy')
goto 9999
end if
!
! The i-th diagonal entry of the preconditioner is set to one if the
! corresponding entry a_ii of the sparse matrix A is zero; otherwise
! it is set to one/a_ii
!
do i=1,n_row
if (p%d(i) == dzero) then
p%d(i) = done
else
p%d(i) = done/p%d(i)
endif
end do
if (a%pl(1) /= 0) then
!
! Apply the same row permutation as in the sparse matrix A
!
call psb_gelp('n',a%pl,p%d,info)
if(info /= 0) then
info=4010
ch_err='psb_dgelp'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
endif
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act == psb_act_abort_) then
call psb_error()
return
end if
return
end subroutine psb_ddiagsc_bld