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293 lines
12 KiB
Fortran
293 lines
12 KiB
Fortran
!!$
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!!$
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!!$ MLD2P4 version 2.0
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!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
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!!$ based on PSBLAS (Parallel Sparse BLAS version 3.0)
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!!$
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!!$ (C) Copyright 2008,2009,2010
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!!$
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari CNRS-IRIT, Toulouse
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!!$ Pasqua D'Ambra ICAR-CNR, Naples
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!!$ Daniela di Serafino Second University of Naples
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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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! File: mld_s_base_smoother_mod.f90
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!
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! Module: mld_s_base_smoother_mod
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!
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! This module defines:
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! - the mld_s_base_smoother_type data structure containing the
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! smoother and related data structures;
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!
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! It contains routines for
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! - Building and applying;
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! - checking if the smoother is correctly defined;
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! - printing a description of the preconditioner;
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! - deallocating the preconditioner data structure.
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!
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module mld_s_base_smoother_mod
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use mld_s_base_solver_mod
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use psb_base_mod, only : psb_desc_type, psb_sspmat_type, psb_long_int_k_,&
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& psb_s_vect_type, psb_s_base_vect_type, psb_s_base_sparse_mat, psb_spk_
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!
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!
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!
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! Type: mld_T_base_smoother_type.
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!
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! It holds the smoother a single level. Its only mandatory component is a solver
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! object which holds a local solver; this decoupling allows to have the same solver
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! e.g ILU to work with Jacobi with multiple sweeps as well as with any AS variant.
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!
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! type mld_T_base_smoother_type
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! class(mld_T_base_solver_type), allocatable :: sv
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! end type mld_T_base_smoother_type
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!
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! Methods:
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!
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! build - Compute the actual contents of the smoother; includes
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! invocation of the build method on the solver component.
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! free - Release memory
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! apply - Apply the smoother to a vector (or to an array); includes
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! invocation of the apply method on the solver component.
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! descr - Prints a description of the object.
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! default - Set default values
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! dump - Dump to file object contents
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! set - Sets various parameters; when a request is unknown
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! it is passed to the solver object for further processing.
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! check - Sanity checks.
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! sizeof - Total memory occupation in bytes
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! get_nzeros - Number of nonzeros
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!
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!
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!
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type mld_s_base_smoother_type
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class(mld_s_base_solver_type), allocatable :: sv
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contains
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procedure, pass(sm) :: check => mld_s_base_smoother_check
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procedure, pass(sm) :: dump => mld_s_base_smoother_dmp
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procedure, pass(sm) :: build => mld_s_base_smoother_bld
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procedure, pass(sm) :: apply_v => mld_s_base_smoother_apply_vect
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procedure, pass(sm) :: apply_a => mld_s_base_smoother_apply
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generic, public :: apply => apply_a, apply_v
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procedure, pass(sm) :: free => mld_s_base_smoother_free
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procedure, pass(sm) :: seti => mld_s_base_smoother_seti
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procedure, pass(sm) :: setc => mld_s_base_smoother_setc
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procedure, pass(sm) :: setr => mld_s_base_smoother_setr
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generic, public :: set => seti, setc, setr
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procedure, pass(sm) :: default => s_base_smoother_default
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procedure, pass(sm) :: descr => mld_s_base_smoother_descr
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procedure, pass(sm) :: sizeof => s_base_smoother_sizeof
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procedure, pass(sm) :: get_nzeros => s_base_smoother_get_nzeros
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end type mld_s_base_smoother_type
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private :: s_base_smoother_sizeof, &
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& s_base_smoother_default, s_base_smoother_get_nzeros
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interface
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subroutine mld_s_base_smoother_apply(alpha,sm,x,beta,y,desc_data,trans,sweeps,work,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_, mld_s_base_smoother_type
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_s_base_smoother_type), intent(in) :: sm
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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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integer, intent(in) :: sweeps
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real(psb_spk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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end subroutine mld_s_base_smoother_apply
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end interface
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interface
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subroutine mld_s_base_smoother_apply_vect(alpha,sm,x,beta,y,desc_data,&
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& trans,sweeps,work,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_, mld_s_base_smoother_type
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type(psb_desc_type), intent(in) :: desc_data
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class(mld_s_base_smoother_type), intent(inout) :: sm
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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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integer, intent(in) :: sweeps
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real(psb_spk_),target, intent(inout) :: work(:)
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integer, intent(out) :: info
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end subroutine mld_s_base_smoother_apply_vect
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end interface
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interface
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subroutine mld_s_base_smoother_check(sm,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_, mld_s_base_smoother_type
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! Arguments
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class(mld_s_base_smoother_type), intent(inout) :: sm
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integer, intent(out) :: info
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end subroutine mld_s_base_smoother_check
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end interface
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interface
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subroutine mld_s_base_smoother_seti(sm,what,val,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_, mld_s_base_smoother_type
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! Arguments
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class(mld_s_base_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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integer, intent(in) :: val
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integer, intent(out) :: info
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end subroutine mld_s_base_smoother_seti
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end interface
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interface
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subroutine mld_s_base_smoother_setc(sm,what,val,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_, mld_s_base_smoother_type
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class(mld_s_base_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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character(len=*), intent(in) :: val
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integer, intent(out) :: info
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end subroutine mld_s_base_smoother_setc
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end interface
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interface
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subroutine mld_s_base_smoother_setr(sm,what,val,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_, mld_s_base_smoother_type
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! Arguments
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class(mld_s_base_smoother_type), intent(inout) :: sm
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integer, intent(in) :: what
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real(psb_spk_), intent(in) :: val
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integer, intent(out) :: info
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end subroutine mld_s_base_smoother_setr
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end interface
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interface
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subroutine mld_s_base_smoother_bld(a,desc_a,sm,upd,info,amold,vmold)
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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_, mld_s_base_smoother_type
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! Arguments
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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_base_smoother_type), intent(inout) :: sm
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character, intent(in) :: upd
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integer, 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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end subroutine mld_s_base_smoother_bld
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end interface
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interface
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subroutine mld_s_base_smoother_free(sm,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_, mld_s_base_smoother_type
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! Arguments
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class(mld_s_base_smoother_type), intent(inout) :: sm
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integer, intent(out) :: info
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end subroutine mld_s_base_smoother_free
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end interface
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interface
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subroutine mld_s_base_smoother_descr(sm,info,iout,coarse)
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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_, mld_s_base_smoother_type
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! Arguments
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class(mld_s_base_smoother_type), intent(in) :: sm
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integer, intent(out) :: info
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integer, intent(in), optional :: iout
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logical, intent(in), optional :: coarse
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end subroutine mld_s_base_smoother_descr
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end interface
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interface
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subroutine mld_s_base_smoother_dmp(sm,ictxt,level,info,prefix,head,smoother,solver)
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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_, mld_s_base_smoother_type
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class(mld_s_base_smoother_type), intent(in) :: sm
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integer, intent(in) :: ictxt,level
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integer, intent(out) :: info
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character(len=*), intent(in), optional :: prefix, head
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logical, optional, intent(in) :: smoother, solver
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end subroutine mld_s_base_smoother_dmp
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end interface
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contains
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!
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! Function returning the size of the mld_prec_type data structure
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! in bytes or in number of nonzeros of the operator(s) involved.
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!
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function s_base_smoother_get_nzeros(sm) result(val)
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implicit none
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class(mld_s_base_smoother_type), intent(in) :: sm
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integer(psb_long_int_k_) :: val
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integer :: i
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val = 0
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if (allocated(sm%sv)) &
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& val = sm%sv%get_nzeros()
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end function s_base_smoother_get_nzeros
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function s_base_smoother_sizeof(sm) result(val)
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implicit none
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! Arguments
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class(mld_s_base_smoother_type), intent(in) :: sm
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integer(psb_long_int_k_) :: val
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integer :: i
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val = 0
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if (allocated(sm%sv)) then
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val = sm%sv%sizeof()
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end if
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return
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end function s_base_smoother_sizeof
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!
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! Set sensible defaults.
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! To be called immediately after allocation
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!
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subroutine s_base_smoother_default(sm)
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implicit none
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! Arguments
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class(mld_s_base_smoother_type), intent(inout) :: sm
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! Do nothing for base version
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if (allocated(sm%sv)) call sm%sv%default()
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return
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end subroutine s_base_smoother_default
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end module mld_s_base_smoother_mod
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