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200 lines
7.9 KiB
Fortran
200 lines
7.9 KiB
Fortran
!
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!
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! AMG-AINV: Approximate Inverse plugin for
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! AMG4PSBLAS version 1.0
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!
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! (C) Copyright 2020
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!
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! Salvatore Filippone University of Rome Tor Vergata
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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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module amg_c_base_ainv_mod
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use amg_base_ainv_mod
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use amg_c_base_solver_mod
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use psb_c_ainv_tools_mod
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use psb_base_mod, only : psb_c_vect_type, psb_spk_, psb_epk_
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type, extends(amg_c_base_solver_type) :: amg_c_base_ainv_solver_type
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!
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! Compute an approximate factorization
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! A^-1 = Z D^-1 W^T
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! Note that here W is going to be transposed explicitly,
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! so that the component w will in the end contain W^T.
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!
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type(psb_cspmat_type) :: w, z
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type(psb_c_vect_type) :: dv
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complex(psb_spk_), allocatable :: d(:)
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contains
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procedure, pass(sv) :: cnv => amg_c_base_ainv_solver_cnv
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procedure, pass(sv) :: dump => amg_c_base_ainv_solver_dmp
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procedure, pass(sv) :: apply_v => amg_c_base_ainv_solver_apply_vect
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procedure, pass(sv) :: apply_a => amg_c_base_ainv_solver_apply
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procedure, pass(sv) :: free => amg_c_base_ainv_solver_free
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procedure, pass(sv) :: sizeof => c_base_ainv_solver_sizeof
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procedure, pass(sv) :: get_nzeros => c_base_ainv_get_nzeros
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procedure, nopass :: get_wrksz => c_base_ainv_get_wrksize
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procedure, pass(sv) :: update_a => amg_c_base_ainv_update_a
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generic, public :: update => update_a
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end type amg_c_base_ainv_solver_type
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private :: c_base_ainv_solver_sizeof, &
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& c_base_ainv_get_nzeros, c_base_ainv_get_wrksize
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interface
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subroutine amg_c_base_ainv_solver_cnv(sv,info,amold,vmold,imold)
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import :: psb_c_base_sparse_mat, psb_c_base_vect_type, psb_spk_, &
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& amg_c_base_ainv_solver_type, psb_ipk_, psb_i_base_vect_type
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Implicit None
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! Arguments
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class(amg_c_base_ainv_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(out) :: info
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class(psb_c_base_sparse_mat), intent(in), optional :: amold
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class(psb_c_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_c_base_ainv_solver_cnv
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end interface
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interface
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subroutine amg_c_base_ainv_update_a(sv,x,desc_data,info)
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import :: psb_desc_type, psb_spk_,amg_c_base_ainv_solver_type, psb_c_vect_type, psb_ipk_
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type(psb_desc_type), intent(in) :: desc_data
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class(amg_c_base_ainv_solver_type), intent(inout) :: sv
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complex(psb_spk_),intent(in) :: x(:)
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integer(psb_ipk_), intent(out) :: info
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end subroutine amg_c_base_ainv_update_a
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end interface
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interface
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subroutine amg_c_base_ainv_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, psb_spk_,amg_c_base_ainv_solver_type, psb_ipk_
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type(psb_desc_type), intent(in) :: desc_data
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class(amg_c_base_ainv_solver_type), intent(inout) :: sv
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complex(psb_spk_),intent(inout) :: x(:)
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complex(psb_spk_),intent(inout) :: y(:)
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complex(psb_spk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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complex(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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complex(psb_spk_),intent(inout), optional :: initu(:)
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end subroutine amg_c_base_ainv_solver_apply
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end interface
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interface
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subroutine amg_c_base_ainv_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, psb_spk_,amg_c_base_ainv_solver_type, psb_c_vect_type, psb_ipk_
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type(psb_desc_type), intent(in) :: desc_data
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class(amg_c_base_ainv_solver_type), intent(inout) :: sv
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type(psb_c_vect_type),intent(inout) :: x
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type(psb_c_vect_type),intent(inout) :: y
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complex(psb_spk_),intent(in) :: alpha,beta
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character(len=1),intent(in) :: trans
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complex(psb_spk_),target, intent(inout) :: work(:)
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type(psb_c_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_c_vect_type),intent(inout), optional :: initu
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end subroutine amg_c_base_ainv_solver_apply_vect
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end interface
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interface
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subroutine amg_c_base_ainv_solver_free(sv,info)
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import :: psb_desc_type, psb_cspmat_type, psb_c_base_sparse_mat, &
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& psb_c_vect_type, psb_c_base_vect_type, psb_spk_, amg_c_base_ainv_solver_type, psb_ipk_
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Implicit None
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! Arguments
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class(amg_c_base_ainv_solver_type), intent(inout) :: sv
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integer(psb_ipk_), intent(out) :: info
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end subroutine amg_c_base_ainv_solver_free
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end interface
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interface
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subroutine amg_c_base_ainv_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num)
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import :: psb_desc_type, psb_cspmat_type, psb_c_base_sparse_mat, &
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& psb_c_vect_type, psb_c_base_vect_type, psb_spk_, amg_c_base_ainv_solver_type, psb_ipk_
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implicit none
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class(amg_c_base_ainv_solver_type), intent(in) :: sv
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type(psb_desc_type), intent(in) :: desc
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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, global_num
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end subroutine amg_c_base_ainv_solver_dmp
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end interface
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contains
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function c_base_ainv_get_nzeros(sv) result(val)
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implicit none
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! Arguments
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class(amg_c_base_ainv_solver_type), intent(in) :: sv
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integer(psb_epk_) :: val
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integer :: i
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val = 0
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val = val + sv%dv%get_nrows()
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val = val + sv%w%get_nzeros()
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val = val + sv%z%get_nzeros()
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return
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end function c_base_ainv_get_nzeros
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function c_base_ainv_solver_sizeof(sv) result(val)
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implicit none
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! Arguments
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class(amg_c_base_ainv_solver_type), intent(in) :: sv
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integer(psb_epk_) :: val
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integer :: i
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val = 2*psb_sizeof_ip + psb_sizeof_dp
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val = val + sv%dv%sizeof()
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val = val + sv%w%sizeof()
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val = val + sv%z%sizeof()
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return
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end function c_base_ainv_solver_sizeof
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function c_base_ainv_get_wrksize() result(val)
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implicit none
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integer(psb_ipk_) :: val
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val = 2
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end function c_base_ainv_get_wrksize
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end module amg_c_base_ainv_mod
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