! ! ! MLD2P4 version 2.2 ! MultiLevel Domain Decomposition Parallel Preconditioners Package ! based on PSBLAS (Parallel Sparse BLAS version 3.5) ! ! (C) Copyright 2008-2018 ! ! Salvatore Filippone ! Pasqua D'Ambra ! Daniela di Serafino ! ! 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 MLD2P4 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 MLD2P4 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. ! ! ! ! ! File: amg_s_ilu_solver_mod.f90 ! ! Module: amg_s_ilu_solver_mod ! ! This module defines: ! - the amg_s_ilu_solver_type data structure containing the ingredients ! for a local Incomplete LU factorization. ! 1. The factorization is always restricted to the diagonal block of the ! current image (coherently with the definition of a SOLVER as a local ! object) ! 2. The code provides support for both pattern-based ILU(K) and ! threshold base ILU(T,L) ! 3. The diagonal is stored separately, so strictly speaking this is ! an incomplete LDU factorization; ! 4. The application phase is shared among all variants; ! ! module amg_s_ilu_solver use amg_base_prec_type, only : amg_fact_names use amg_s_base_solver_mod use psb_s_ilu_fact_mod type, extends(amg_s_base_solver_type) :: amg_s_ilu_solver_type type(psb_sspmat_type) :: l, u real(psb_spk_), allocatable :: d(:) type(psb_s_vect_type) :: dv integer(psb_ipk_) :: fact_type, fill_in real(psb_spk_) :: thresh contains procedure, pass(sv) :: dump => amg_s_ilu_solver_dmp procedure, pass(sv) :: check => s_ilu_solver_check procedure, pass(sv) :: clone => amg_s_ilu_solver_clone procedure, pass(sv) :: clone_settings => amg_s_ilu_solver_clone_settings procedure, pass(sv) :: clear_data => amg_s_ilu_solver_clear_data procedure, pass(sv) :: build => amg_s_ilu_solver_bld procedure, pass(sv) :: cnv => amg_s_ilu_solver_cnv procedure, pass(sv) :: apply_v => amg_s_ilu_solver_apply_vect procedure, pass(sv) :: apply_a => amg_s_ilu_solver_apply procedure, pass(sv) :: free => s_ilu_solver_free procedure, pass(sv) :: cseti => s_ilu_solver_cseti procedure, pass(sv) :: csetc => s_ilu_solver_csetc procedure, pass(sv) :: csetr => s_ilu_solver_csetr procedure, pass(sv) :: descr => s_ilu_solver_descr procedure, pass(sv) :: default => s_ilu_solver_default procedure, pass(sv) :: sizeof => s_ilu_solver_sizeof procedure, pass(sv) :: get_nzeros => s_ilu_solver_get_nzeros procedure, nopass :: get_wrksz => s_ilu_solver_get_wrksize procedure, nopass :: get_fmt => s_ilu_solver_get_fmt procedure, nopass :: get_id => s_ilu_solver_get_id end type amg_s_ilu_solver_type private :: s_ilu_solver_bld, s_ilu_solver_apply, & & s_ilu_solver_free, & & s_ilu_solver_descr, s_ilu_solver_sizeof, & & s_ilu_solver_default, s_ilu_solver_dmp, & & s_ilu_solver_apply_vect, s_ilu_solver_get_nzeros, & & s_ilu_solver_get_fmt, s_ilu_solver_check, & & s_ilu_solver_get_id, s_ilu_solver_get_wrksize interface subroutine amg_s_ilu_solver_apply_vect(alpha,sv,x,beta,y,desc_data,& & trans,work,wv,info,init,initu) import :: psb_desc_type, amg_s_ilu_solver_type, psb_s_vect_type, psb_spk_, & & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_ implicit none type(psb_desc_type), intent(in) :: desc_data class(amg_s_ilu_solver_type), intent(inout) :: sv type(psb_s_vect_type),intent(inout) :: x type(psb_s_vect_type),intent(inout) :: y real(psb_spk_),intent(in) :: alpha,beta character(len=1),intent(in) :: trans real(psb_spk_),target, intent(inout) :: work(:) type(psb_s_vect_type),intent(inout) :: wv(:) integer(psb_ipk_), intent(out) :: info character, intent(in), optional :: init type(psb_s_vect_type),intent(inout), optional :: initu end subroutine amg_s_ilu_solver_apply_vect end interface interface subroutine amg_s_ilu_solver_apply(alpha,sv,x,beta,y,desc_data,& & trans,work,info,init,initu) import :: psb_desc_type, amg_s_ilu_solver_type, psb_s_vect_type, psb_spk_, & & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, psb_ipk_ implicit none type(psb_desc_type), intent(in) :: desc_data class(amg_s_ilu_solver_type), intent(inout) :: sv real(psb_spk_),intent(inout) :: x(:) real(psb_spk_),intent(inout) :: y(:) real(psb_spk_),intent(in) :: alpha,beta character(len=1),intent(in) :: trans real(psb_spk_),target, intent(inout) :: work(:) integer(psb_ipk_), intent(out) :: info character, intent(in), optional :: init real(psb_spk_),intent(inout), optional :: initu(:) end subroutine amg_s_ilu_solver_apply end interface interface subroutine amg_s_ilu_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold) import :: psb_desc_type, amg_s_ilu_solver_type, psb_s_vect_type, psb_spk_, & & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type,& & psb_ipk_, psb_i_base_vect_type implicit none type(psb_sspmat_type), intent(in), target :: a Type(psb_desc_type), Intent(inout) :: desc_a class(amg_s_ilu_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_ilu_solver_bld end interface interface subroutine amg_s_ilu_solver_cnv(sv,info,amold,vmold,imold) import :: amg_s_ilu_solver_type, psb_spk_, & & psb_s_base_sparse_mat, psb_s_base_vect_type,& & psb_ipk_, psb_i_base_vect_type implicit none class(amg_s_ilu_solver_type), intent(inout) :: sv integer(psb_ipk_), intent(out) :: info 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_ilu_solver_cnv end interface interface subroutine amg_s_ilu_solver_dmp(sv,desc,level,info,prefix,head,solver,global_num) import :: psb_desc_type, amg_s_ilu_solver_type, psb_s_vect_type, psb_spk_, & & psb_sspmat_type, psb_s_base_sparse_mat, psb_s_base_vect_type, & & psb_ipk_ implicit none class(amg_s_ilu_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 end subroutine amg_s_ilu_solver_dmp end interface interface subroutine amg_s_ilu_solver_clone(sv,svout,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, & & amg_s_base_solver_type, amg_s_ilu_solver_type, psb_ipk_ Implicit None ! Arguments class(amg_s_ilu_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_ilu_solver_clone end interface interface subroutine amg_s_ilu_solver_clone_settings(sv,svout,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, & & amg_s_base_solver_type, amg_s_ilu_solver_type, psb_ipk_ Implicit None ! Arguments class(amg_s_ilu_solver_type), intent(inout) :: sv class(amg_s_base_solver_type), intent(inout) :: svout integer(psb_ipk_), intent(out) :: info end subroutine amg_s_ilu_solver_clone_settings end interface interface subroutine amg_s_ilu_solver_clear_data(sv,info) import :: psb_desc_type, psb_sspmat_type, psb_s_base_sparse_mat, & & psb_s_vect_type, psb_s_base_vect_type, psb_spk_, & & amg_s_ilu_solver_type, psb_ipk_ Implicit None ! Arguments class(amg_s_ilu_solver_type), intent(inout) :: sv integer(psb_ipk_), intent(out) :: info end subroutine amg_s_ilu_solver_clear_data end interface contains subroutine s_ilu_solver_default(sv) Implicit None ! Arguments class(amg_s_ilu_solver_type), intent(inout) :: sv sv%fact_type = psb_ilu_n_ sv%fill_in = 0 sv%thresh = szero return end subroutine s_ilu_solver_default subroutine s_ilu_solver_check(sv,info) Implicit None ! Arguments class(amg_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_check' call psb_erractionsave(err_act) info = psb_success_ call amg_check_def(sv%fact_type,& & 'Factorization',psb_ilu_n_,is_legal_ilu_fact) select case(sv%fact_type) case(psb_ilu_n_,psb_milu_n_) call amg_check_def(sv%fill_in,& & 'Level',izero,is_int_non_negative) case(psb_ilu_t_) call amg_check_def(sv%thresh,& & 'Eps',szero,is_legal_s_fact_thrs) end select if (info /= psb_success_) goto 9999 call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine s_ilu_solver_check subroutine s_ilu_solver_cseti(sv,what,val,info,idx) Implicit None ! Arguments class(amg_s_ilu_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 integer(psb_ipk_) :: err_act character(len=20) :: name='s_ilu_solver_cseti' info = psb_success_ call psb_erractionsave(err_act) select case(psb_toupper(trim((what)))) case('SUB_SOLVE') sv%fact_type = val case('SUB_FILLIN') sv%fill_in = val case default call sv%amg_s_base_solver_type%set(what,val,info,idx=idx) end select call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine s_ilu_solver_cseti subroutine s_ilu_solver_csetc(sv,what,val,info,idx) Implicit None ! Arguments class(amg_s_ilu_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 integer(psb_ipk_) :: err_act, ival character(len=20) :: name='s_ilu_solver_csetc' info = psb_success_ call psb_erractionsave(err_act) ival = amg_stringval(val) select case(psb_toupper(trim((what)))) case('SUB_SOLVE') sv%fact_type = ival case default call sv%amg_s_base_solver_type%set(what,val,info,idx=idx) end select if (info /= psb_success_) then info = psb_err_from_subroutine_ call psb_errpush(info, name) goto 9999 end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine s_ilu_solver_csetc subroutine s_ilu_solver_csetr(sv,what,val,info,idx) Implicit None ! Arguments class(amg_s_ilu_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 integer(psb_ipk_) :: err_act character(len=20) :: name='s_ilu_solver_csetr' call psb_erractionsave(err_act) info = psb_success_ select case(psb_toupper(what)) case('SUB_ILUTHRS') sv%thresh = val case default call sv%amg_s_base_solver_type%set(what,val,info,idx=idx) 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(amg_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(amg_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='amg_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: ',& & amg_fact_names(sv%fact_type) select case(sv%fact_type) case(psb_ilu_n_,psb_milu_n_) write(iout_,*) ' Fill level:',sv%fill_in case(psb_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(amg_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(amg_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 = psb_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 amg_s_ilu_solver