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595 lines
19 KiB
Fortran
595 lines
19 KiB
Fortran
!
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!
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! AMG4PSBLAS version 1.0
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! Algebraic Multigrid Package
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! based on PSBLAS (Parallel Sparse BLAS version 3.7)
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!
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! (C) Copyright 2021
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!
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Fabio Durastante
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! Salvatore Filippone
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! Pasqua D'Ambra
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! Fabio Durastante
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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 AMG4PSBLAS 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 AMG4PSBLAS 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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! moved here from amg4psblas-extension
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!
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!
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! AMG4PSBLAS Extensions
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!
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! (C) Copyright 2019
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!
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! Salvatore Filippone Cranfield University
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! Pasqua D'Ambra IAC-CNR, Naples, IT
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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 AMG4PSBLAS 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 AMG4PSBLAS 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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! File: amg_d_krm_solver_mod.f90
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!
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! Module: amg_d_krm_solver_mod
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!
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module amg_d_krm_solver
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use amg_d_base_solver_mod
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use amg_d_prec_type
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type, extends(amg_d_base_solver_type) :: amg_d_krm_solver_type
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!
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logical :: global
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character(len=16) :: method, kprec, sub_solve
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integer(psb_ipk_) :: irst, istopc, itmax, itrace, i_sub_solve
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integer(psb_ipk_) :: fillin
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real(psb_dpk_) :: eps
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type(amg_dprec_type) :: prec
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type(psb_desc_type) :: desc_local
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type(psb_dspmat_type) :: a_local
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type(psb_d_vect_type) :: x_local, z_local
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type(psb_dspmat_type), pointer :: a=>null()
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contains
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!
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!
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procedure, pass(sv) :: dump => d_krm_solver_dmp
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procedure, pass(sv) :: check => d_krm_solver_check
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procedure, pass(sv) :: clone => d_krm_solver_clone
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procedure, pass(sv) :: clone_settings => d_krm_solver_clone_settings
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procedure, pass(sv) :: cnv => d_krm_solver_cnv
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procedure, pass(sv) :: apply_v => amg_d_krm_solver_apply_vect
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procedure, pass(sv) :: apply_a => amg_d_krm_solver_apply
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procedure, pass(sv) :: clear_data => d_krm_solver_clear_data
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procedure, pass(sv) :: free => d_krm_solver_free
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procedure, pass(sv) :: cseti => d_krm_solver_cseti
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procedure, pass(sv) :: csetc => d_krm_solver_csetc
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procedure, pass(sv) :: csetr => d_krm_solver_csetr
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procedure, pass(sv) :: sizeof => d_krm_solver_sizeof
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procedure, pass(sv) :: get_nzeros => d_krm_solver_get_nzeros
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!procedure, nopass :: get_id => d_krm_solver_get_id
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procedure, pass(sv) :: is_global => d_krm_solver_is_global
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procedure, nopass :: is_iterative => d_krm_solver_is_iterative
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!
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! These methods are specific for the new solver type
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! and therefore need to be overridden
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!
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procedure, pass(sv) :: descr => d_krm_solver_descr
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procedure, pass(sv) :: default => d_krm_solver_default
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procedure, pass(sv) :: build => amg_d_krm_solver_bld
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procedure, nopass :: get_fmt => d_krm_solver_get_fmt
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end type amg_d_krm_solver_type
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private :: d_krm_solver_get_fmt, d_krm_solver_descr, d_krm_solver_default
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interface
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subroutine amg_d_krm_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, amg_d_krm_solver_type, psb_d_vect_type, psb_dpk_, &
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& psb_dspmat_type, psb_d_base_sparse_mat, psb_d_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(amg_d_krm_solver_type), intent(inout) :: sv
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type(psb_d_vect_type),intent(inout) :: x
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type(psb_d_vect_type),intent(inout) :: y
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real(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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real(psb_dpk_),target, intent(inout) :: work(:)
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type(psb_d_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_d_vect_type),intent(inout), optional :: initu
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end subroutine amg_d_krm_solver_apply_vect
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end interface
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interface
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subroutine amg_d_krm_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, amg_d_krm_solver_type, psb_d_vect_type, psb_dpk_, &
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& psb_dspmat_type, psb_d_base_sparse_mat, psb_d_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(amg_d_krm_solver_type), intent(inout) :: sv
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real(psb_dpk_),intent(inout) :: x(:)
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real(psb_dpk_),intent(inout) :: y(:)
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real(psb_dpk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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real(psb_dpk_),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_dpk_),intent(inout), optional :: initu(:)
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end subroutine amg_d_krm_solver_apply
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end interface
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interface
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subroutine amg_d_krm_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold)
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import :: psb_desc_type, amg_d_krm_solver_type, psb_d_vect_type, psb_dpk_, &
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& psb_dspmat_type, psb_d_base_sparse_mat, psb_d_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_dspmat_type), intent(in), target :: a
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Type(psb_desc_type), Intent(inout) :: desc_a
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class(amg_d_krm_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(out) :: info
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type(psb_dspmat_type), intent(in), target, optional :: b
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class(psb_d_base_sparse_mat), intent(in), optional :: amold
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class(psb_d_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 amg_d_krm_solver_bld
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end interface
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contains
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!
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!
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subroutine d_krm_solver_default(sv)
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Implicit None
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! Arguments
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class(amg_d_krm_solver_type), intent(inout) :: sv
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sv%method = 'bicgstab'
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sv%kprec = 'bjac'
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sv%sub_solve = 'ilu'
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sv%i_sub_solve = -1
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sv%fillin = 1
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sv%irst = 30
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sv%istopc = 2
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sv%itmax = 40
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sv%itrace = -1
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sv%eps = 1.d-6
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sv%global = .false.
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return
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end subroutine d_krm_solver_default
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function d_krm_solver_get_nzeros(sv) result(val)
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implicit none
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! Arguments
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class(amg_d_krm_solver_type), intent(in) :: sv
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integer(psb_epk_) :: val
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val = sv%prec%get_nzeros()
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return
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end function d_krm_solver_get_nzeros
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function d_krm_solver_sizeof(sv) result(val)
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implicit none
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! Arguments
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class(amg_d_krm_solver_type), intent(in) :: sv
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integer(psb_epk_) :: val
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val = sv%prec%sizeof() + sv%desc_local%sizeof() + sv%a_local%sizeof()
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return
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end function d_krm_solver_sizeof
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subroutine d_krm_solver_check(sv,info)
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Implicit None
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! Arguments
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class(amg_d_krm_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='d_krm_solver_check'
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call psb_erractionsave(err_act)
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info = psb_success_
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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 d_krm_solver_check
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subroutine d_krm_solver_cseti(sv,what,val,info,idx)
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Implicit None
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! Arguments
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class(amg_d_krm_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_), intent(in), optional :: idx
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integer(psb_ipk_) :: err_act
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character(len=20) :: name='d_krm_solver_cseti'
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info = psb_success_
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call psb_erractionsave(err_act)
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select case(psb_toupper(trim(what)))
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case('KRM_IRST')
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sv%irst = val
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case('KRM_ISTOPC')
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sv%istopc = val
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case('KRM_ITMAX')
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sv%itmax = val
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case('KRM_ITRACE')
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sv%itrace = val
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case('KRM_SUB_SOLVE')
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sv%i_sub_solve = val
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case('KRM_FILLIN')
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sv%fillin = val
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case default
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call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
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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 d_krm_solver_cseti
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subroutine d_krm_solver_csetc(sv,what,val,info,idx)
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Implicit None
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! Arguments
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class(amg_d_krm_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_), intent(in), optional :: idx
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integer(psb_ipk_) :: err_act, ival
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character(len=20) :: name='d_krm_solver_csetc'
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info = psb_success_
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call psb_erractionsave(err_act)
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select case(psb_toupper(trim(what)))
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case('KRM_METHOD')
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sv%method = psb_toupper(trim(val))
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case('KRM_KPREC')
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sv%kprec = psb_toupper(trim(val))
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case('KRM_SUB_SOLVE')
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sv%sub_solve = psb_toupper(trim(val))
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case('KRM_GLOBAL')
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select case(psb_toupper(trim(val)))
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case('LOCAL','FALSE')
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sv%global = .false.
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case('GLOBAL','TRUE')
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sv%global =.true.
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end select
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case default
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call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
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end select
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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 d_krm_solver_csetc
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subroutine d_krm_solver_csetr(sv,what,val,info,idx)
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Implicit None
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! Arguments
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class(amg_d_krm_solver_type), intent(inout) :: sv
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character(len=*), intent(in) :: what
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real(psb_dpk_), intent(in) :: val
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: idx
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integer(psb_ipk_) :: err_act
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character(len=20) :: name='d_krm_solver_csetr'
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call psb_erractionsave(err_act)
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info = psb_success_
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select case(psb_toupper(what))
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case('KRM_EPS')
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sv%eps = val
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case default
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call sv%amg_d_base_solver_type%set(what,val,info,idx=idx)
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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 d_krm_solver_csetr
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subroutine d_krm_solver_clear_data(sv,info)
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use psb_base_mod, only : psb_exit
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Implicit None
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! Arguments
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class(amg_d_krm_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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type(psb_ctxt_type) :: l_ctxt
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character(len=20) :: name='d_krm_solver_free'
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call psb_erractionsave(err_act)
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info = psb_success_
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call sv%prec%free(info)
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call sv%a_local%free()
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call sv%x_local%free(info)
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call sv%z_local%free(info)
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if ((.not.sv%global).and.sv%desc_local%is_ok()) then
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l_ctxt=sv%desc_local%get_context()
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call psb_exit(l_ctxt,close=.false.)
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end if
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call sv%desc_local%free(info)
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nullify(sv%a)
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call psb_erractionrestore(err_act)
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return
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end subroutine d_krm_solver_clear_data
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subroutine d_krm_solver_free(sv,info)
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use psb_base_mod, only : psb_exit
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Implicit None
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! Arguments
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class(amg_d_krm_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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type(psb_ctxt_type) :: l_ctxt
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character(len=20) :: name='d_krm_solver_free'
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call psb_erractionsave(err_act)
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info = psb_success_
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call sv%clear_data(info)
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call psb_erractionrestore(err_act)
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return
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end subroutine d_krm_solver_free
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function d_krm_solver_get_fmt() result(val)
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implicit none
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character(len=32) :: val
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val = "KRM solver"
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end function d_krm_solver_get_fmt
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subroutine d_krm_solver_descr(sv,info,iout,coarse,prefix)
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Implicit None
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! Arguments
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class(amg_d_krm_solver_type), intent(in) :: sv
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_), intent(in), optional :: iout
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logical, intent(in), optional :: coarse
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character(len=*), intent(in), optional :: prefix
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! Local variables
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integer(psb_ipk_) :: err_act
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character(len=20), parameter :: name='amg_d_krm_solver_descr'
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integer(psb_ipk_) :: iout_
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character(1024) :: prefix_
|
|
|
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call psb_erractionsave(err_act)
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info = psb_success_
|
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if (present(iout)) then
|
|
iout_ = iout
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else
|
|
iout_ = psb_out_unit
|
|
endif
|
|
if (present(prefix)) then
|
|
prefix_ = prefix
|
|
else
|
|
prefix_ = ""
|
|
end if
|
|
|
|
if (sv%global) then
|
|
write(iout_,*) trim(prefix_), ' Krylov solver (global)'
|
|
else
|
|
write(iout_,*) trim(prefix_), ' Krylov solver (local) '
|
|
end if
|
|
write(iout_,*) trim(prefix_), ' method: ',sv%method
|
|
write(iout_,*) trim(prefix_), ' kprec: ',sv%kprec
|
|
call sv%prec%descr(info,iout_,prefix='KRM : '//prefix_)
|
|
write(iout_,*) trim(prefix_), ' itmax: ',sv%itmax
|
|
write(iout_,*) trim(prefix_), ' eps: ',sv%eps
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
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return
|
|
end subroutine d_krm_solver_descr
|
|
|
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subroutine d_krm_solver_cnv(sv,info,amold,vmold,imold)
|
|
implicit none
|
|
class(amg_d_krm_solver_type), intent(inout) :: sv
|
|
integer(psb_ipk_), intent(out) :: info
|
|
class(psb_d_base_sparse_mat), intent(in), optional :: amold
|
|
class(psb_d_base_vect_type), intent(in), optional :: vmold
|
|
class(psb_i_base_vect_type), intent(in), optional :: imold
|
|
|
|
call sv%prec%cnv(info,amold=amold,vmold=vmold,imold=imold)
|
|
|
|
end subroutine d_krm_solver_cnv
|
|
|
|
subroutine d_krm_solver_clone(sv,svout,info)
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(amg_d_krm_solver_type), intent(inout) :: sv
|
|
class(amg_d_base_solver_type), allocatable, intent(inout) :: svout
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = psb_success_
|
|
|
|
call svout%free(info)
|
|
allocate(svout,stat=info,mold=sv)
|
|
select type(so=>svout)
|
|
class is(amg_d_krm_solver_type)
|
|
so%method = sv%method
|
|
so%kprec = sv%kprec
|
|
so%sub_solve = sv%sub_solve
|
|
so%i_sub_solve = sv%i_sub_solve
|
|
so%fillin = sv%fillin
|
|
so%irst = sv%irst
|
|
so%istopc = sv%istopc
|
|
so%itmax = sv%itmax
|
|
so%itrace = sv%itrace
|
|
so%global = sv%global
|
|
so%eps = sv%eps
|
|
call sv%a_local%clone(so%a_local,info)
|
|
call sv%desc_local%clone(so%desc_local,info)
|
|
call sv%prec%clone(so%prec,info)
|
|
class default
|
|
info = psb_err_internal_error_
|
|
end select
|
|
|
|
end subroutine d_krm_solver_clone
|
|
|
|
|
|
subroutine d_krm_solver_clone_settings(sv,svout,info)
|
|
Implicit None
|
|
|
|
! Arguments
|
|
class(amg_d_krm_solver_type), intent(inout) :: sv
|
|
class(amg_d_base_solver_type), intent(inout) :: svout
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = psb_success_
|
|
|
|
select type(so=>svout)
|
|
class is(amg_d_krm_solver_type)
|
|
so%method = sv%method
|
|
so%kprec = sv%kprec
|
|
so%sub_solve = sv%sub_solve
|
|
so%i_sub_solve = sv%i_sub_solve
|
|
so%fillin = sv%fillin
|
|
so%irst = sv%irst
|
|
so%istopc = sv%istopc
|
|
so%itmax = sv%itmax
|
|
so%itrace = sv%itrace
|
|
so%global = sv%global
|
|
so%eps = sv%eps
|
|
class default
|
|
info = psb_err_internal_error_
|
|
end select
|
|
|
|
end subroutine d_krm_solver_clone_settings
|
|
|
|
subroutine d_krm_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
|
|
implicit none
|
|
class(amg_d_krm_solver_type), intent(in) :: sv
|
|
type(psb_desc_type), intent(in) :: desc
|
|
integer(psb_ipk_), intent(in) :: level
|
|
integer(psb_ipk_), intent(out) :: info
|
|
character(len=*), intent(in), optional :: prefix, head
|
|
logical, optional, intent(in) :: solver, global_num
|
|
|
|
|
|
call sv%prec%dump(info,prefix=prefix,head=head)
|
|
|
|
end subroutine d_krm_solver_dmp
|
|
!
|
|
! Notify whether KRM is used as a global solver
|
|
!
|
|
function d_krm_solver_is_global(sv) result(val)
|
|
implicit none
|
|
class(amg_d_krm_solver_type), intent(in) :: sv
|
|
logical :: val
|
|
|
|
val = (sv%global)
|
|
end function d_krm_solver_is_global
|
|
!
|
|
function d_krm_solver_is_iterative() result(val)
|
|
implicit none
|
|
logical :: val
|
|
|
|
val = .true.
|
|
end function d_krm_solver_is_iterative
|
|
|
|
end module amg_d_krm_solver
|