! ! ! AMG4PSBLAS version 1.0 ! Algebraic Multigrid Package ! based on PSBLAS (Parallel Sparse BLAS version 3.7) ! ! (C) Copyright 2021 ! ! Salvatore Filippone ! Pasqua D'Ambra ! Fabio Durastante ! ! Redistribution and use in source and binary forms, with or without ! modification, are permitted provided that the following conditions ! are met: ! 1. Redistributions of source code must retain the above copyright ! notice, this list of conditions and the following disclaimer. ! 2. Redistributions in binary form must reproduce the above copyright ! notice, this list of conditions, and the following disclaimer in the ! documentation and/or other materials provided with the distribution. ! 3. The name of the AMG4PSBLAS group or the names of its contributors may ! not be used to endorse or promote products derived from this ! software without specific written permission. ! ! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED ! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR ! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS ! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR ! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF ! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS ! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN ! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ! POSSIBILITY OF SUCH DAMAGE. ! ! ! ! ! ! ! module amg_s_ainv_solver use amg_s_base_ainv_mod use psb_base_mod, only : psb_d_vect_type type, extends(amg_s_base_ainv_solver_type) :: amg_s_ainv_solver_type ! ! Compute an approximate factorization ! A^-1 = Z D^-1 W^T ! Note that here W is going to be transposed explicitly, ! so that the component w will in the end contain W^T. ! integer(psb_ipk_) :: alg, fill_in real(psb_spk_) :: thresh contains procedure, pass(sv) :: check => amg_s_ainv_solver_check procedure, pass(sv) :: build => amg_s_ainv_solver_bld procedure, pass(sv) :: clone => amg_s_ainv_solver_clone procedure, pass(sv) :: cseti => amg_s_ainv_solver_cseti procedure, pass(sv) :: csetc => amg_s_ainv_solver_csetc procedure, pass(sv) :: csetr => amg_s_ainv_solver_csetr !!$ procedure, pass(sv) :: seti => amg_s_ainv_solver_seti !!$ procedure, pass(sv) :: setc => amg_s_ainv_solver_setc !!$ procedure, pass(sv) :: setr => amg_s_ainv_solver_setr procedure, pass(sv) :: descr => amg_s_ainv_solver_descr procedure, pass(sv) :: default => s_ainv_solver_default procedure, nopass :: stringval => s_ainv_stringval procedure, nopass :: algname => s_ainv_algname end type amg_s_ainv_solver_type private :: s_ainv_stringval, s_ainv_solver_default, & & s_ainv_algname interface subroutine amg_s_ainv_solver_clone(sv,svout,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & amg_s_base_solver_type, psb_dpk_, amg_s_ainv_solver_type, psb_ipk_ Implicit None class(amg_s_ainv_solver_type), intent(inout) :: sv class(amg_s_base_solver_type), allocatable, intent(inout) :: svout integer(psb_ipk_), intent(out) :: info end subroutine amg_s_ainv_solver_clone end interface interface subroutine amg_s_ainv_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_d_vect_type, psb_s_base_vect_type, psb_dpk_,& & amg_s_ainv_solver_type, psb_i_base_vect_type, psb_ipk_ Implicit None ! Arguments type(psb_sspmat_type), intent(in), target :: a Type(psb_desc_type), Intent(inout) :: desc_a class(amg_s_ainv_solver_type), intent(inout) :: sv integer(psb_ipk_), intent(out) :: info type(psb_sspmat_type), intent(in), target, optional :: b class(psb_s_base_sparse_mat), intent(in), optional :: amold class(psb_s_base_vect_type), intent(in), optional :: vmold class(psb_i_base_vect_type), intent(in), optional :: imold end subroutine amg_s_ainv_solver_bld end interface interface subroutine amg_s_ainv_solver_check(sv,info) import :: psb_dpk_, amg_s_ainv_solver_type, psb_ipk_ Implicit None ! Arguments class(amg_s_ainv_solver_type), intent(inout) :: sv integer(psb_ipk_), intent(out) :: info end subroutine amg_s_ainv_solver_check end interface interface subroutine amg_s_ainv_solver_cseti(sv,what,val,info,idx) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, psb_ipk_,& & psb_d_vect_type, psb_s_base_vect_type, psb_dpk_, amg_s_ainv_solver_type Implicit None ! Arguments class(amg_s_ainv_solver_type), intent(inout) :: sv character(len=*), intent(in) :: what integer(psb_ipk_), intent(in) :: val integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), intent(in), optional :: idx end subroutine amg_s_ainv_solver_cseti end interface interface subroutine amg_s_ainv_solver_csetc(sv,what,val,info,idx) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, psb_ipk_,& & psb_d_vect_type, psb_s_base_vect_type, psb_dpk_, amg_s_ainv_solver_type Implicit None ! Arguments class(amg_s_ainv_solver_type), intent(inout) :: sv character(len=*), intent(in) :: what character(len=*), intent(in) :: val integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), intent(in), optional :: idx end subroutine amg_s_ainv_solver_csetc end interface interface subroutine amg_s_ainv_solver_csetr(sv,what,val,info,idx) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, psb_ipk_,& & psb_d_vect_type, psb_s_base_vect_type, psb_spk_, amg_s_ainv_solver_type Implicit None ! Arguments class(amg_s_ainv_solver_type), intent(inout) :: sv character(len=*), intent(in) :: what real(psb_spk_), intent(in) :: val integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), intent(in), optional :: idx end subroutine amg_s_ainv_solver_csetr end interface !!$ interface !!$ subroutine amg_s_ainv_solver_setc(sv,what,val,info) !!$ import :: amg_s_ainv_solver_type, psb_ipk_ !!$ Implicit none !!$ ! Arguments !!$ class(amg_s_ainv_solver_type), intent(inout) :: sv !!$ integer(psb_ipk_), intent(in) :: what !!$ character(len=*), intent(in) :: val !!$ integer(psb_ipk_), intent(out) :: info !!$ end subroutine amg_s_ainv_solver_setc !!$ end interface !!$ !!$ interface !!$ subroutine amg_s_ainv_solver_seti(sv,what,val,info) !!$ import :: amg_s_ainv_solver_type, psb_ipk_ !!$ Implicit none !!$ ! Arguments !!$ class(amg_s_ainv_solver_type), intent(inout) :: sv !!$ integer(psb_ipk_), intent(in) :: what !!$ integer(psb_ipk_), intent(in) :: val !!$ integer(psb_ipk_), intent(out) :: info !!$ end subroutine amg_s_ainv_solver_seti !!$ end interface !!$ !!$ interface !!$ subroutine amg_s_ainv_solver_setr(sv,what,val,info) !!$ import :: amg_s_ainv_solver_type, psb_ipk_, psb_spk_ !!$ Implicit none !!$ ! Arguments !!$ class(amg_s_ainv_solver_type), intent(inout) :: sv !!$ integer(psb_ipk_), intent(in) :: what !!$ real(psb_spk_), intent(in) :: val !!$ integer(psb_ipk_), intent(out) :: info !!$ end subroutine amg_s_ainv_solver_setr !!$ end interface interface subroutine amg_s_ainv_solver_descr(sv,info,iout,coarse) import :: psb_dpk_, amg_s_ainv_solver_type, psb_ipk_ Implicit None ! Arguments class(amg_s_ainv_solver_type), intent(in) :: sv integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), intent(in), optional :: iout logical, intent(in), optional :: coarse end subroutine amg_s_ainv_solver_descr end interface interface amg_ainv_bld subroutine amg_s_ainv_bld(a,alg,fillin,thresh,wmat,d,zmat,desc,info,blck,iscale) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_d_vect_type, psb_s_base_vect_type, psb_spk_, psb_ipk_ implicit none type(psb_sspmat_type), intent(in), target :: a integer(psb_ipk_), intent(in) :: fillin,alg real(psb_spk_), intent(in) :: thresh type(psb_sspmat_type), intent(inout) :: wmat, zmat real(psb_spk_), allocatable :: d(:) Type(psb_desc_type), Intent(inout) :: desc integer(psb_ipk_), intent(out) :: info type(psb_sspmat_type), intent(in), optional :: blck integer(psb_ipk_), intent(in), optional :: iscale end subroutine amg_s_ainv_bld end interface contains subroutine s_ainv_solver_default(sv) use psb_base_mod Implicit None ! Arguments class(amg_s_ainv_solver_type), intent(inout) :: sv sv%alg = amg_ainv_llk_ sv%fill_in = 0 sv%thresh = dzero return end subroutine s_ainv_solver_default function is_positive_nz_min(ip) result(res) implicit none integer(psb_ipk_), intent(in) :: ip logical :: res res = (ip >= 1) return end function is_positive_nz_min function s_ainv_stringval(string) result(val) use psb_base_mod, only : psb_ipk_,psb_toupper implicit none ! Arguments character(len=*), intent(in) :: string integer(psb_ipk_) :: val character(len=*), parameter :: name='d_ainv_stringval' select case(psb_toupper(trim(string))) case('LLK') val = amg_ainv_llk_ case('STAB-LLK') val = amg_ainv_s_ft_llk_ case('SYM-LLK') val = amg_ainv_s_llk_ case('MLK') val = amg_ainv_mlk_ #if defined(HAVE_TUMA_SAINV) case('SAINV-TUMA') val = amg_ainv_s_tuma_ case('LAINV-TUMA') val = amg_ainv_l_tuma_ #endif case default val = amg_stringval(string) end select end function s_ainv_stringval function s_ainv_algname(ialg) result(val) integer(psb_ipk_), intent(in) :: ialg character(len=40) :: val character(len=*), parameter :: mlkname = 'Left-looking, list merge ' character(len=*), parameter :: llkname = 'Left-looking ' character(len=*), parameter :: stabllkname = 'Stabilized Left-looking ' character(len=*), parameter :: sllkname = 'Symmetric Left-looking ' character(len=*), parameter :: sainvname = 'SAINV (Benzi & Tuma) ' character(len=*), parameter :: lainvname = 'LAINV (Benzi & Tuma) ' character(len=*), parameter :: defname = 'Unknown alg variant ' select case (ialg) case(amg_ainv_mlk_) val = mlkname case(amg_ainv_llk_) val = llkname case(amg_ainv_s_llk_) val = sllkname case(amg_ainv_s_ft_llk_) val = stabllkname #if defined(HAVE_TUMA_SAINV) case(amg_ainv_s_tuma_ ) val = sainvname case(amg_ainv_l_tuma_ ) val = lainvname #endif case default val = defname end select end function s_ainv_algname end module amg_s_ainv_solver