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amg4psblas/mlprec/mld_dslu_bld.f90

130 lines
4.7 KiB
Fortran

18 years ago
!!$
!!$
!!$ MLD2P4 version 1.0
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
!!$ based on PSBLAS (Parallel Sparse BLAS version 2.2)
!!$
!!$ (C) Copyright 2008
!!$
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari University of Rome Tor Vergata
!!$ Pasqua D'Ambra ICAR-CNR, Naples
!!$ Daniela di Serafino Second University of Naples
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!!$
!!$ 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 MLD2P4 group or the names of its contributors may
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!!$ 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 MLD2P4 GROUP OR ITS CONTRIBUTORS
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!!$ 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: mld_dslu_bld.f90
!
! Subroutine: mld_dslu_bld
! Version: real
!
! This routine computes the LU factorization of the local part of the matrix
! stored into a, by using SuperLU.
!
! The matrix to be factorized is
! - either a submatrix of the distributed matrix corresponding to any level
! of a multilevel preconditioner, and its factorization is used to build
! the 'base preconditioner' corresponding to that level,
! - or a copy of the whole matrix corresponding to the coarsest level of
! a multilevel preconditioner, and its factorization is used to build
! the 'base preconditioner' corresponding to the coarsest level.
!
! The data structure allocated by SuperLU to store the L and U factors is
! pointed by p%iprcparm(mld_slu_ptr_).
!
!
! Arguments:
! a - type(psb_dspmat_type), input/output.
! The sparse matrix structure containing the local submatrix to
! be factorized.
! desc_a - type(psb_desc_type), input.
! The communication descriptor associated to a.
mld2p4 Changelog krylov/psb_prec_mod.F90 mlprec/mld_cas_aply.f90 mlprec/mld_cas_bld.f90 mlprec/mld_cbaseprec_aply.f90 mlprec/mld_cbaseprec_bld.f90 mlprec/mld_cdiag_bld.f90 mlprec/mld_cfact_bld.f90 mlprec/mld_cilu_bld.f90 mlprec/mld_cmlprec_aply.f90 mlprec/mld_cprecbld.f90 mlprec/mld_cslu_bld.f90 mlprec/mld_cslud_bld.f90 mlprec/mld_csp_renum.f90 mlprec/mld_csub_aply.f90 mlprec/mld_csub_solve.f90 mlprec/mld_cumf_bld.f90 mlprec/mld_das_aply.f90 mlprec/mld_das_bld.f90 mlprec/mld_dbaseprec_aply.f90 mlprec/mld_dbaseprec_bld.f90 mlprec/mld_ddiag_bld.f90 mlprec/mld_dfact_bld.f90 mlprec/mld_dilu_bld.f90 mlprec/mld_dmlprec_aply.f90 mlprec/mld_dprecbld.f90 mlprec/mld_dslu_bld.f90 mlprec/mld_dslud_bld.f90 mlprec/mld_dsp_renum.f90 mlprec/mld_dsub_aply.f90 mlprec/mld_dsub_solve.f90 mlprec/mld_dumf_bld.f90 mlprec/mld_inner_mod.f90 mlprec/mld_move_alloc_mod.F90 mlprec/mld_prec_type.f90 mlprec/mld_sas_aply.f90 mlprec/mld_sas_bld.f90 mlprec/mld_sbaseprec_aply.f90 mlprec/mld_sbaseprec_bld.f90 mlprec/mld_sdiag_bld.f90 mlprec/mld_sfact_bld.f90 mlprec/mld_silu_bld.f90 mlprec/mld_smlprec_aply.f90 mlprec/mld_sprecbld.f90 mlprec/mld_sslu_bld.f90 mlprec/mld_sslud_bld.f90 mlprec/mld_ssp_renum.f90 mlprec/mld_ssub_aply.f90 mlprec/mld_ssub_solve.f90 mlprec/mld_sumf_bld.f90 mlprec/mld_zas_aply.f90 mlprec/mld_zas_bld.f90 mlprec/mld_zbaseprec_aply.f90 mlprec/mld_zbaseprec_bld.f90 mlprec/mld_zdiag_bld.f90 mlprec/mld_zfact_bld.f90 mlprec/mld_zilu_bld.f90 mlprec/mld_zmlprec_aply.f90 mlprec/mld_zprecbld.f90 mlprec/mld_zslu_bld.f90 mlprec/mld_zslud_bld.f90 mlprec/mld_zsp_renum.f90 mlprec/mld_zsub_aply.f90 mlprec/mld_zsub_solve.f90 mlprec/mld_zumf_bld.f90 Changed names from XbaseprcY to XbaseprecY.
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! p - type(mld_dbaseprec_type), input/output.
! The 'base preconditioner' data structure containing the pointer,
! p%iprcparm(mld_slu_ptr_), to the data structure used by SuperLU
! to store the L and U factors.
! info - integer, output.
! Error code.
!
subroutine mld_dslu_bld(a,desc_a,p,info)
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use psb_base_mod
use mld_inner_mod, mld_protect_name => mld_dslu_bld
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implicit none
! Arguments
type(psb_dspmat_type), intent(inout) :: a
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type(psb_desc_type), intent(in) :: desc_a
mld2p4 Changelog krylov/psb_prec_mod.F90 mlprec/mld_cas_aply.f90 mlprec/mld_cas_bld.f90 mlprec/mld_cbaseprec_aply.f90 mlprec/mld_cbaseprec_bld.f90 mlprec/mld_cdiag_bld.f90 mlprec/mld_cfact_bld.f90 mlprec/mld_cilu_bld.f90 mlprec/mld_cmlprec_aply.f90 mlprec/mld_cprecbld.f90 mlprec/mld_cslu_bld.f90 mlprec/mld_cslud_bld.f90 mlprec/mld_csp_renum.f90 mlprec/mld_csub_aply.f90 mlprec/mld_csub_solve.f90 mlprec/mld_cumf_bld.f90 mlprec/mld_das_aply.f90 mlprec/mld_das_bld.f90 mlprec/mld_dbaseprec_aply.f90 mlprec/mld_dbaseprec_bld.f90 mlprec/mld_ddiag_bld.f90 mlprec/mld_dfact_bld.f90 mlprec/mld_dilu_bld.f90 mlprec/mld_dmlprec_aply.f90 mlprec/mld_dprecbld.f90 mlprec/mld_dslu_bld.f90 mlprec/mld_dslud_bld.f90 mlprec/mld_dsp_renum.f90 mlprec/mld_dsub_aply.f90 mlprec/mld_dsub_solve.f90 mlprec/mld_dumf_bld.f90 mlprec/mld_inner_mod.f90 mlprec/mld_move_alloc_mod.F90 mlprec/mld_prec_type.f90 mlprec/mld_sas_aply.f90 mlprec/mld_sas_bld.f90 mlprec/mld_sbaseprec_aply.f90 mlprec/mld_sbaseprec_bld.f90 mlprec/mld_sdiag_bld.f90 mlprec/mld_sfact_bld.f90 mlprec/mld_silu_bld.f90 mlprec/mld_smlprec_aply.f90 mlprec/mld_sprecbld.f90 mlprec/mld_sslu_bld.f90 mlprec/mld_sslud_bld.f90 mlprec/mld_ssp_renum.f90 mlprec/mld_ssub_aply.f90 mlprec/mld_ssub_solve.f90 mlprec/mld_sumf_bld.f90 mlprec/mld_zas_aply.f90 mlprec/mld_zas_bld.f90 mlprec/mld_zbaseprec_aply.f90 mlprec/mld_zbaseprec_bld.f90 mlprec/mld_zdiag_bld.f90 mlprec/mld_zfact_bld.f90 mlprec/mld_zilu_bld.f90 mlprec/mld_zmlprec_aply.f90 mlprec/mld_zprecbld.f90 mlprec/mld_zslu_bld.f90 mlprec/mld_zslud_bld.f90 mlprec/mld_zsp_renum.f90 mlprec/mld_zsub_aply.f90 mlprec/mld_zsub_solve.f90 mlprec/mld_zumf_bld.f90 Changed names from XbaseprcY to XbaseprecY.
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type(mld_dbaseprec_type), intent(inout) :: p
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integer, intent(out) :: info
! Local variables
integer :: nzt,ictxt,me,np,err_act
character(len=20) :: name, ch_err
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if(psb_get_errstatus().ne.0) return
info=0
name='mld_dslu_bld'
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call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
if (psb_toupper(a%fida) /= 'CSR') then
info=135
call psb_errpush(info,name,a_err=a%fida)
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goto 9999
endif
nzt = psb_sp_get_nnzeros(a)
!
! Compute the LU factorization
!
call mld_dslu_fact(a%m,nzt,&
& a%aspk,a%ia2,a%ia1,p%iprcparm(mld_slu_ptr_),info)
if (info /= 0) then
ch_err='mld_slu_fact'
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call psb_errpush(4110,name,a_err=ch_err,i_err=(/info,0,0,0,0/))
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
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call psb_error()
return
end if
return
end subroutine mld_dslu_bld
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