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569 lines
18 KiB
Fortran
569 lines
18 KiB
Fortran
!
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!
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! MLD2P4 version 2.2
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! MultiLevel Domain Decomposition Parallel Preconditioners Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.5)
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!
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! (C) Copyright 2008-2018
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Daniela di Serafino
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 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
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! 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
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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!
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!
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! File: mld_s_ilu_solver_mod.f90
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!
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! Module: mld_s_ilu_solver_mod
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!
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! This module defines:
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! - the mld_s_ilu_solver_type data structure containing the ingredients
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! for a local Incomplete LU factorization.
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! 1. The factorization is always restricted to the diagonal block of the
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! current image (coherently with the definition of a SOLVER as a local
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! object)
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! 2. The code provides support for both pattern-based ILU(K) and
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! threshold base ILU(T,L)
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! 3. The diagonal is stored separately, so strictly speaking this is
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! an incomplete LDU factorization;
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! 4. The application phase is shared;
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!
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!
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module mld_s_ilu_solver
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use mld_base_prec_type, only : mld_fact_names
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use mld_s_base_solver_mod
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use mld_s_ilu_fact_mod
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type, extends(mld_s_base_solver_type) :: mld_s_ilu_solver_type
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type(psb_sspmat_type) :: l, u
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real(psb_spk_), allocatable :: d(:)
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type(psb_s_vect_type) :: dv
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integer(psb_ipk_) :: fact_type, fill_in
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real(psb_spk_) :: thresh
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contains
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procedure, pass(sv) :: dump => mld_s_ilu_solver_dmp
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procedure, pass(sv) :: ccheck => s_ilu_solver_check
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procedure, pass(sv) :: clone => mld_s_ilu_solver_clone
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procedure, pass(sv) :: build => mld_s_ilu_solver_bld
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procedure, pass(sv) :: cnv => mld_s_ilu_solver_cnv
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procedure, pass(sv) :: apply_v => mld_s_ilu_solver_apply_vect
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procedure, pass(sv) :: apply_a => mld_s_ilu_solver_apply
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procedure, pass(sv) :: free => s_ilu_solver_free
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procedure, pass(sv) :: seti => s_ilu_solver_seti
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procedure, pass(sv) :: setc => s_ilu_solver_setc
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procedure, pass(sv) :: setr => s_ilu_solver_setr
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procedure, pass(sv) :: cseti => s_ilu_solver_cseti
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procedure, pass(sv) :: csetc => s_ilu_solver_csetc
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procedure, pass(sv) :: csetr => s_ilu_solver_csetr
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procedure, pass(sv) :: descr => s_ilu_solver_descr
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procedure, pass(sv) :: default => s_ilu_solver_default
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procedure, pass(sv) :: sizeof => s_ilu_solver_sizeof
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procedure, pass(sv) :: get_nzeros => s_ilu_solver_get_nzeros
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procedure, nopass :: get_wrksz => s_ilu_solver_get_wrksize
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procedure, nopass :: get_fmt => s_ilu_solver_get_fmt
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procedure, nopass :: get_id => s_ilu_solver_get_id
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end type mld_s_ilu_solver_type
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private :: s_ilu_solver_bld, s_ilu_solver_apply, &
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& s_ilu_solver_free, s_ilu_solver_seti, &
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& s_ilu_solver_setc, s_ilu_solver_setr,&
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& s_ilu_solver_descr, s_ilu_solver_sizeof, &
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& s_ilu_solver_default, s_ilu_solver_dmp, &
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& s_ilu_solver_apply_vect, s_ilu_solver_get_nzeros, &
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& s_ilu_solver_get_fmt, s_ilu_solver_check, &
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& s_ilu_solver_get_id, s_ilu_solver_get_wrksize
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interface
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subroutine mld_s_ilu_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
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& trans,work,wv,info,init,initu)
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import :: psb_desc_type, mld_s_ilu_solver_type, psb_s_vect_type, psb_spk_, &
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& psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
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implicit none
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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type(psb_s_vect_type),intent(inout) :: x
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type(psb_s_vect_type),intent(inout) :: y
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real(psb_spk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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real(psb_spk_),target, intent(inout) :: work(:)
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type(psb_s_vect_type),intent(inout) :: wv(:)
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integer(psb_ipk_), intent(out) :: info
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character, intent(in), optional :: init
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type(psb_s_vect_type),intent(inout), optional :: initu
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end subroutine mld_s_ilu_solver_apply_vect
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end interface
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interface
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subroutine mld_s_ilu_solver_apply(alpha,sv,x,beta,y,desc_data,&
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& trans,work,info,init,initu)
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import :: psb_desc_type, mld_s_ilu_solver_type, psb_s_vect_type, psb_spk_, &
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& psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_
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implicit none
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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real(psb_spk_),intent(inout) :: x(:)
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real(psb_spk_),intent(inout) :: y(:)
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real(psb_spk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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real(psb_spk_),target, intent(inout) :: work(:)
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integer(psb_ipk_), intent(out) :: info
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character, intent(in), optional :: init
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real(psb_spk_),intent(inout), optional :: initu(:)
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end subroutine mld_s_ilu_solver_apply
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end interface
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interface
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subroutine mld_s_ilu_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
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import :: psb_desc_type, mld_s_ilu_solver_type, psb_s_vect_type, psb_spk_, &
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& psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,&
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& psb_ipk_, psb_i_base_vect_type
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implicit none
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type(psb_sspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(in) :: desc_a
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(out) :: info
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type(psb_sspmat_type), intent(in), target, optional :: b
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class(psb_s_base_sparse_mat), intent(in), optional :: amold
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class(psb_s_base_vect_type), intent(in), optional :: vmold
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class(psb_i_base_vect_type), intent(in), optional :: imold
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end subroutine mld_s_ilu_solver_bld
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end interface
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interface
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subroutine mld_s_ilu_solver_cnv(sv,info,amold,vmold,imold)
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import :: mld_s_ilu_solver_type, psb_spk_, &
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& psb_s_base_sparse_mat, psb_s_base_vect_type,&
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& psb_ipk_, psb_i_base_vect_type
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implicit none
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(out) :: info
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class(psb_s_base_sparse_mat), intent(in), optional :: amold
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class(psb_s_base_vect_type), intent(in), optional :: vmold
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class(psb_i_base_vect_type), intent(in), optional :: imold
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end subroutine mld_s_ilu_solver_cnv
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end interface
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interface
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subroutine mld_s_ilu_solver_dmp(sv,ictxt,level,info,prefix,head,solver)
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import :: psb_desc_type, mld_s_ilu_solver_type, psb_s_vect_type, psb_spk_, &
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& psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, &
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& psb_ipk_
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implicit none
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class(mld_s_ilu_solver_type), intent(in) :: sv
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integer(psb_ipk_), intent(in) :: ictxt
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integer(psb_ipk_), intent(in) :: level
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integer(psb_ipk_), intent(out) :: info
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character(len=*), intent(in), optional :: prefix, head
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logical, optional, intent(in) :: solver
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end subroutine mld_s_ilu_solver_dmp
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end interface
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interface
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subroutine mld_s_ilu_solver_clone(sv,svout,info)
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import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, &
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& psb_s_vect_type, psb_s_base_vect_type, psb_spk_, &
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& mld_s_base_solver_type, mld_s_ilu_solver_type, psb_ipk_
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Implicit None
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! Arguments
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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class(mld_s_base_solver_type), allocatable, intent(inout) :: svout
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integer(psb_ipk_), intent(out) :: info
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end subroutine mld_s_ilu_solver_clone
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end interface
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contains
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subroutine s_ilu_solver_default(sv)
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Implicit None
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! Arguments
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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sv%fact_type = mld_ilu_n_
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sv%fill_in = 0
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sv%thresh = szero
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return
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end subroutine s_ilu_solver_default
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subroutine s_ilu_solver_check(sv,info)
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Implicit None
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! Arguments
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act
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character(len=20) :: name='s_ilu_solver_check'
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call psb_erractionsave(err_act)
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info = psb_success_
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call mld_check_def(sv%fact_type,&
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& 'Factorization',mld_ilu_n_,is_legal_ilu_fact)
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select case(sv%fact_type)
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case(mld_ilu_n_,mld_milu_n_)
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call mld_check_def(sv%fill_in,&
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& 'Level',izero,is_int_non_negative)
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case(mld_ilu_t_)
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call mld_check_def(sv%thresh,&
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& 'Eps',szero,is_legal_s_fact_thrs)
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end select
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if (info /= psb_success_) goto 9999
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine s_ilu_solver_check
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subroutine s_ilu_solver_seti(sv,what,val,info)
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Implicit None
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! Arguments
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(in) :: what
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integer(psb_ipk_), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act
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character(len=20) :: name='s_ilu_solver_seti'
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info = psb_success_
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call psb_erractionsave(err_act)
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select case(what)
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case(mld_sub_solve_)
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sv%fact_type = val
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case(mld_sub_fillin_)
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sv%fill_in = val
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case default
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call sv%mld_s_base_solver_type%set(what,val,info)
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end select
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine s_ilu_solver_seti
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subroutine s_ilu_solver_setc(sv,what,val,info)
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Implicit None
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! Arguments
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(in) :: what
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character(len=*), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act, ival
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character(len=20) :: name='s_ilu_solver_setc'
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info = psb_success_
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call psb_erractionsave(err_act)
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|
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ival = sv%stringval(val)
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if (ival >= 0) then
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call sv%set(what,ival,info)
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end if
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if (info /= psb_success_) then
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info = psb_err_from_subroutine_
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call psb_errpush(info, name)
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine s_ilu_solver_setc
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subroutine s_ilu_solver_setr(sv,what,val,info)
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Implicit None
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|
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! Arguments
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(in) :: what
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real(psb_spk_), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act
|
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character(len=20) :: name='s_ilu_solver_setr'
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|
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call psb_erractionsave(err_act)
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info = psb_success_
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|
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select case(what)
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case(mld_sub_iluthrs_)
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sv%thresh = val
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case default
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call sv%mld_s_base_solver_type%set(what,val,info)
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end select
|
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|
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call psb_erractionrestore(err_act)
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return
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|
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9999 call psb_error_handler(err_act)
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return
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end subroutine s_ilu_solver_setr
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|
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subroutine s_ilu_solver_cseti(sv,what,val,info)
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|
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Implicit None
|
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|
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! Arguments
|
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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character(len=*), intent(in) :: what
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integer(psb_ipk_), intent(in) :: val
|
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integer(psb_ipk_), intent(out) :: info
|
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integer(psb_ipk_) :: err_act
|
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character(len=20) :: name='s_ilu_solver_cseti'
|
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|
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info = psb_success_
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call psb_erractionsave(err_act)
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|
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select case(psb_toupper(what))
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case('SUB_SOLVE')
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sv%fact_type = val
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case('SUB_FILLIN')
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sv%fill_in = val
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case default
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call sv%mld_s_base_solver_type%set(what,val,info)
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end select
|
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|
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call psb_erractionrestore(err_act)
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return
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|
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9999 call psb_error_handler(err_act)
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return
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end subroutine s_ilu_solver_cseti
|
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|
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subroutine s_ilu_solver_csetc(sv,what,val,info)
|
|
|
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Implicit None
|
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|
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! Arguments
|
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class(mld_s_ilu_solver_type), intent(inout) :: sv
|
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character(len=*), intent(in) :: what
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character(len=*), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act, ival
|
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character(len=20) :: name='s_ilu_solver_csetc'
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|
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info = psb_success_
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call psb_erractionsave(err_act)
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|
|
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ival = sv%stringval(val)
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if (ival >= 0) then
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call sv%set(what,ival,info)
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end if
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|
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if (info /= psb_success_) then
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info = psb_err_from_subroutine_
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call psb_errpush(info, name)
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goto 9999
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(err_act)
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return
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end subroutine s_ilu_solver_csetc
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|
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subroutine s_ilu_solver_csetr(sv,what,val,info)
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|
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Implicit None
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|
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! Arguments
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class(mld_s_ilu_solver_type), intent(inout) :: sv
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character(len=*), intent(in) :: what
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real(psb_spk_), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: err_act
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character(len=20) :: name='s_ilu_solver_csetr'
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|
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call psb_erractionsave(err_act)
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info = psb_success_
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|
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select case(psb_toupper(what))
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case('SUB_ILUTHRS')
|
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sv%thresh = val
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case default
|
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call sv%mld_s_base_solver_type%set(what,val,info)
|
|
end select
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
return
|
|
end subroutine s_ilu_solver_csetr
|
|
|
|
subroutine s_ilu_solver_free(sv,info)
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_s_ilu_solver_type), intent(inout) :: sv
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_) :: err_act
|
|
character(len=20) :: name='s_ilu_solver_free'
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
|
|
if (allocated(sv%d)) then
|
|
deallocate(sv%d,stat=info)
|
|
if (info /= psb_success_) then
|
|
info = psb_err_alloc_dealloc_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
end if
|
|
call sv%l%free()
|
|
call sv%u%free()
|
|
call sv%dv%free(info)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
return
|
|
end subroutine s_ilu_solver_free
|
|
|
|
subroutine s_ilu_solver_descr(sv,info,iout,coarse)
|
|
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(mld_s_ilu_solver_type), intent(in) :: sv
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_), intent(in), optional :: iout
|
|
logical, intent(in), optional :: coarse
|
|
|
|
! Local variables
|
|
integer(psb_ipk_) :: err_act
|
|
character(len=20), parameter :: name='mld_s_ilu_solver_descr'
|
|
integer(psb_ipk_) :: iout_
|
|
|
|
call psb_erractionsave(err_act)
|
|
info = psb_success_
|
|
if (present(iout)) then
|
|
iout_ = iout
|
|
else
|
|
iout_ = psb_out_unit
|
|
endif
|
|
|
|
write(iout_,*) ' Incomplete factorization solver: ',&
|
|
& mld_fact_names(sv%fact_type)
|
|
select case(sv%fact_type)
|
|
case(mld_ilu_n_,mld_milu_n_)
|
|
write(iout_,*) ' Fill level:',sv%fill_in
|
|
case(mld_ilu_t_)
|
|
write(iout_,*) ' Fill level:',sv%fill_in
|
|
write(iout_,*) ' Fill threshold :',sv%thresh
|
|
end select
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
return
|
|
end subroutine s_ilu_solver_descr
|
|
|
|
function s_ilu_solver_get_nzeros(sv) result(val)
|
|
|
|
implicit none
|
|
! Arguments
|
|
class(mld_s_ilu_solver_type), intent(in) :: sv
|
|
integer(psb_epk_) :: val
|
|
integer(psb_ipk_) :: i
|
|
|
|
val = 0
|
|
val = val + sv%dv%get_nrows()
|
|
val = val + sv%l%get_nzeros()
|
|
val = val + sv%u%get_nzeros()
|
|
|
|
return
|
|
end function s_ilu_solver_get_nzeros
|
|
|
|
function s_ilu_solver_sizeof(sv) result(val)
|
|
|
|
implicit none
|
|
! Arguments
|
|
class(mld_s_ilu_solver_type), intent(in) :: sv
|
|
integer(psb_epk_) :: val
|
|
integer(psb_ipk_) :: i
|
|
|
|
val = 2*psb_sizeof_ip + psb_sizeof_sp
|
|
val = val + sv%dv%sizeof()
|
|
val = val + sv%l%sizeof()
|
|
val = val + sv%u%sizeof()
|
|
|
|
return
|
|
end function s_ilu_solver_sizeof
|
|
|
|
function s_ilu_solver_get_fmt() result(val)
|
|
implicit none
|
|
character(len=32) :: val
|
|
|
|
val = "ILU solver"
|
|
end function s_ilu_solver_get_fmt
|
|
|
|
function s_ilu_solver_get_id() result(val)
|
|
implicit none
|
|
integer(psb_ipk_) :: val
|
|
|
|
val = mld_ilu_n_
|
|
end function s_ilu_solver_get_id
|
|
|
|
function s_ilu_solver_get_wrksize() result(val)
|
|
implicit none
|
|
integer(psb_ipk_) :: val
|
|
|
|
val = 2
|
|
end function s_ilu_solver_get_wrksize
|
|
|
|
end module mld_s_ilu_solver
|