! ! ! 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. ! ! ! ! File: amg_d_slu_solver_mod.f90 ! ! Module: amg_d_slu_solver_mod ! ! This module defines: ! - the amg_d_slu_solver_type data structure containing the ingredients ! to interface with the SuperLU package. ! 1. The factorization is restricted to the diagonal block of the ! current image. ! module amg_d_slu_solver use iso_c_binding use amg_d_base_solver_mod #if defined(PSB_IPK8) type, extends(amg_d_base_solver_type) :: amg_d_slu_solver_type end type amg_d_slu_solver_type #else type, extends(amg_d_base_solver_type) :: amg_d_slu_solver_type type(c_ptr) :: lufactors=c_null_ptr integer(c_long_long) :: symbsize=0, numsize=0 contains procedure, pass(sv) :: build => amg_d_slu_solver_bld procedure, pass(sv) :: apply_a => amg_d_slu_solver_apply procedure, pass(sv) :: apply_v => amg_d_slu_solver_apply_vect procedure, pass(sv) :: free => d_slu_solver_free procedure, pass(sv) :: clear_data => d_slu_solver_clear_data procedure, pass(sv) :: descr => d_slu_solver_descr procedure, pass(sv) :: sizeof => d_slu_solver_sizeof procedure, nopass :: get_fmt => d_slu_solver_get_fmt procedure, nopass :: get_id => d_slu_solver_get_id final :: d_slu_solver_finalize end type amg_d_slu_solver_type private :: d_slu_solver_free, d_slu_solver_descr, & & d_slu_solver_sizeof, & & d_slu_solver_get_fmt, d_slu_solver_get_id, & & d_slu_solver_clear_data private :: d_slu_solver_finalize interface function amg_dslu_fact(n,nnz,values,rowptr,colind,& & lufactors)& & bind(c,name='amg_dslu_fact') result(info) use iso_c_binding integer(c_int), value :: n,nnz integer(c_int) :: info integer(c_int) :: rowptr(*),colind(*) real(c_double) :: values(*) type(c_ptr) :: lufactors end function amg_dslu_fact end interface interface function amg_dslu_solve(itrans,n,nrhs,b,ldb,lufactors)& & bind(c,name='amg_dslu_solve') result(info) use iso_c_binding integer(c_int) :: info integer(c_int), value :: itrans,n,nrhs,ldb real(c_double) :: b(ldb,*) type(c_ptr), value :: lufactors end function amg_dslu_solve end interface interface function amg_dslu_free(lufactors)& & bind(c,name='amg_dslu_free') result(info) use iso_c_binding integer(c_int) :: info type(c_ptr), value :: lufactors end function amg_dslu_free end interface interface subroutine amg_d_slu_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold) use psb_base_mod import amg_d_slu_solver_type Implicit None ! Arguments type(psb_dspmat_type), intent(in), target :: a Type(psb_desc_type), Intent(inout) :: desc_a class(amg_d_slu_solver_type), intent(inout) :: sv integer(psb_ipk_), intent(out) :: info type(psb_dspmat_type), intent(in), target, optional :: b 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 end subroutine amg_d_slu_solver_bld end interface interface subroutine amg_d_slu_solver_apply_vect(alpha,sv,x,beta,y,desc_data,& & trans,work,wv,info,init,initu) use psb_base_mod import amg_d_slu_solver_type implicit none type(psb_desc_type), intent(in) :: desc_data class(amg_d_slu_solver_type), intent(inout) :: sv type(psb_d_vect_type),intent(inout) :: x type(psb_d_vect_type),intent(inout) :: y real(psb_dpk_),intent(in) :: alpha,beta character(len=1),intent(in) :: trans real(psb_dpk_),target, intent(inout) :: work(:) type(psb_d_vect_type),intent(inout) :: wv(:) integer(psb_ipk_), intent(out) :: info character, intent(in), optional :: init type(psb_d_vect_type),intent(inout), optional :: initu end subroutine amg_d_slu_solver_apply_vect end interface interface subroutine amg_d_slu_solver_apply(alpha,sv,x,beta,y,desc_data,& & trans,work,info,init,initu) use psb_base_mod import amg_d_slu_solver_type implicit none type(psb_desc_type), intent(in) :: desc_data class(amg_d_slu_solver_type), intent(inout) :: sv real(psb_dpk_),intent(inout) :: x(:) real(psb_dpk_),intent(inout) :: y(:) real(psb_dpk_),intent(in) :: alpha,beta character(len=1),intent(in) :: trans real(psb_dpk_),target, intent(inout) :: work(:) integer(psb_ipk_), intent(out) :: info character, intent(in), optional :: init real(psb_dpk_),intent(inout), optional :: initu(:) end subroutine amg_d_slu_solver_apply end interface contains !!$ subroutine d_slu_solver_apply(alpha,sv,x,beta,y,desc_data,& !!$ & trans,work,info,init,initu) !!$ use psb_base_mod !!$ implicit none !!$ type(psb_desc_type), intent(in) :: desc_data !!$ class(amg_d_slu_solver_type), intent(inout) :: sv !!$ real(psb_dpk_),intent(inout) :: x(:) !!$ real(psb_dpk_),intent(inout) :: y(:) !!$ real(psb_dpk_),intent(in) :: alpha,beta !!$ character(len=1),intent(in) :: trans !!$ real(psb_dpk_),target, intent(inout) :: work(:) !!$ integer, intent(out) :: info !!$ character, intent(in), optional :: init !!$ real(psb_dpk_),intent(inout), optional :: initu(:) !!$ !!$ integer :: n_row,n_col !!$ real(psb_dpk_), pointer :: ww(:) !!$ type(psb_ctxt_type) :: ctxt !!$ integer :: np,me,i, err_act !!$ character :: trans_ !!$ character(len=20) :: name='d_slu_solver_apply' !!$ !!$ call psb_erractionsave(err_act) !!$ !!$ info = psb_success_ !!$ !!$ trans_ = psb_toupper(trans) !!$ select case(trans_) !!$ case('N') !!$ case('T','C') !!$ case default !!$ call psb_errpush(psb_err_iarg_invalid_i_,name) !!$ goto 9999 !!$ end select !!$ ! !!$ ! For non-iterative solvers, init and initu are ignored. !!$ ! !!$ !!$ n_row = desc_data%get_local_rows() !!$ n_col = desc_data%get_local_cols() !!$ !!$ if (n_col <= size(work)) then !!$ ww => work(1:n_col) !!$ else !!$ allocate(ww(n_col),stat=info) !!$ if (info /= psb_success_) then !!$ info=psb_err_alloc_request_ !!$ call psb_errpush(info,name,i_err=(/n_col,0,0,0,0/),& !!$ & a_err='real(psb_dpk_)') !!$ goto 9999 !!$ end if !!$ endif !!$ !!$ ww(1:n_row) = x(1:n_row) !!$ select case(trans_) !!$ case('N') !!$ info = amg_dslu_solve(0,n_row,1,ww,n_row,sv%lufactors) !!$ case('T') !!$ info = amg_dslu_solve(1,n_row,1,ww,n_row,sv%lufactors) !!$ case('C') !!$ info = amg_dslu_solve(2,n_row,1,ww,n_row,sv%lufactors) !!$ case default !!$ call psb_errpush(psb_err_internal_error_, & !!$ & name,a_err='Invalid TRANS in ILU subsolve') !!$ goto 9999 !!$ end select !!$ !!$ if (info == psb_success_) & !!$ & call psb_geaxpby(alpha,ww,beta,y,desc_data,info) !!$ !!$ !!$ if (info /= psb_success_) then !!$ call psb_errpush(psb_err_internal_error_,& !!$ & name,a_err='Error in subsolve') !!$ goto 9999 !!$ endif !!$ !!$ if (n_col > size(work)) then !!$ deallocate(ww) !!$ endif !!$ !!$ call psb_erractionrestore(err_act) !!$ return !!$ !!$9999 call psb_error_handler(err_act) !!$ return !!$ !!$ end subroutine d_slu_solver_apply !!$ !!$ subroutine d_slu_solver_apply_vect(alpha,sv,x,beta,y,desc_data,& !!$ & trans,work,wv,info,init,initu) !!$ use psb_base_mod !!$ implicit none !!$ type(psb_desc_type), intent(in) :: desc_data !!$ class(amg_d_slu_solver_type), intent(inout) :: sv !!$ type(psb_d_vect_type),intent(inout) :: x !!$ type(psb_d_vect_type),intent(inout) :: y !!$ real(psb_dpk_),intent(in) :: alpha,beta !!$ character(len=1),intent(in) :: trans !!$ real(psb_dpk_),target, intent(inout) :: work(:) !!$ type(psb_d_vect_type),intent(inout) :: wv(:) !!$ integer, intent(out) :: info !!$ character, intent(in), optional :: init !!$ type(psb_d_vect_type),intent(inout), optional :: initu !!$ !!$ integer :: err_act !!$ character(len=20) :: name='d_slu_solver_apply_vect' !!$ !!$ call psb_erractionsave(err_act) !!$ !!$ info = psb_success_ !!$ ! !!$ ! For non-iterative solvers, init and initu are ignored. !!$ ! !!$ !!$ call x%v%sync() !!$ call y%v%sync() !!$ call sv%apply(alpha,x%v%v,beta,y%v%v,desc_data,trans,work,info) !!$ call y%v%set_host() !!$ if (info /= 0) goto 9999 !!$ !!$ call psb_erractionrestore(err_act) !!$ return !!$ !!$9999 call psb_error_handler(err_act) !!$ return !!$ !!$ end subroutine d_slu_solver_apply_vect !!$ !!$ subroutine d_slu_solver_bld(a,desc_a,sv,info,b,amold,vmold,imold) !!$ !!$ use psb_base_mod !!$ !!$ Implicit None !!$ !!$ ! Arguments !!$ type(psb_dspmat_type), intent(in), target :: a !!$ Type(psb_desc_type), Intent(inout) :: desc_a !!$ class(amg_d_slu_solver_type), intent(inout) :: sv !!$ integer, intent(out) :: info !!$ type(psb_dspmat_type), intent(in), target, optional :: b !!$ 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 !!$ ! Local variables !!$ type(psb_dspmat_type) :: atmp !!$ type(psb_d_csc_sparse_mat) :: acsc !!$ type(psb_d_coo_sparse_mat) :: acoo !!$ integer :: n_row,n_col, nrow_a, nztota !!$ type(psb_ctxt_type) :: ctxt !!$ integer :: np,me,i, err_act, debug_unit, debug_level !!$ character(len=20) :: name='d_slu_solver_bld', ch_err !!$ !!$ info=psb_success_ !!$ call psb_erractionsave(err_act) !!$ debug_unit = psb_get_debug_unit() !!$ debug_level = psb_get_debug_level() !!$ ctxt = desc_a%get_context() !!$ call psb_info(ctxt, me, np) !!$ if (debug_level >= psb_debug_outer_) & !!$ & write(debug_unit,*) me,' ',trim(name),' start' !!$ !!$ !!$ n_row = desc_a%get_local_rows() !!$ n_col = desc_a%get_local_cols() !!$ !!$ !!$ call a%cscnv(atmp,info,type='coo') !!$ call psb_rwextd(n_row,atmp,info,b=b) !!$ call atmp%cscnv(info,type='coo',dupl=psb_dupl_add_) !!$ nrow_a = atmp%get_nrows() !!$ call atmp%a%csclip(acoo,info,jmax=nrow_a) !!$ call acsc%mv_from_coo(acoo,info) !!$ nztota = acsc%get_nzeros() !!$ ! Fix the entries to call C-base SuperLU !!$ acsc%ia(:) = acsc%ia(:) - 1 !!$ acsc%icp(:) = acsc%icp(:) - 1 !!$ info = amg_dslu_fact(nrow_a,nztota,acsc%val,& !!$ & acsc%icp,acsc%ia,sv%lufactors) !!$ !!$ if (info /= psb_success_) then !!$ info=psb_err_from_subroutine_ !!$ ch_err='amg_dslu_fact' !!$ call psb_errpush(info,name,a_err=ch_err) !!$ goto 9999 !!$ end if !!$ !!$ call acsc%free() !!$ call atmp%free() !!$ !!$ if (debug_level >= psb_debug_outer_) & !!$ & write(debug_unit,*) me,' ',trim(name),' end' !!$ !!$ call psb_erractionrestore(err_act) !!$ return !!$ !!$9999 call psb_error_handler(err_act) !!$ return !!$ end subroutine d_slu_solver_bld subroutine d_slu_solver_free(sv,info) Implicit None ! Arguments class(amg_d_slu_solver_type), intent(inout) :: sv integer, intent(out) :: info Integer :: err_act character(len=20) :: name='d_slu_solver_free' call psb_erractionsave(err_act) info = psb_success_ call sv%clear_data(info) if (info /= psb_success_) goto 9999 call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine d_slu_solver_free subroutine d_slu_solver_clear_data(sv,info) Implicit None ! Arguments class(amg_d_slu_solver_type), intent(inout) :: sv integer, intent(out) :: info Integer :: err_act character(len=20) :: name='d_slu_solver_clear_data' call psb_erractionsave(err_act) info = psb_success_ if (c_associated(sv%lufactors)) info = amg_dslu_free(sv%lufactors) sv%lufactors = c_null_ptr if (info /= psb_success_) goto 9999 call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine d_slu_solver_clear_data subroutine d_slu_solver_finalize(sv) Implicit None ! Arguments type(amg_d_slu_solver_type), intent(inout) :: sv integer :: info Integer :: err_act character(len=20) :: name='d_slu_solver_finalize' call sv%free(info) return end subroutine d_slu_solver_finalize subroutine d_slu_solver_descr(sv,info,iout,coarse,prefix) Implicit None ! Arguments class(amg_d_slu_solver_type), intent(in) :: sv integer, intent(out) :: info integer, intent(in), optional :: iout logical, intent(in), optional :: coarse character(len=*), intent(in), optional :: prefix ! Local variables integer :: err_act character(len=20), parameter :: name='amg_d_slu_solver_descr' integer :: iout_ character(1024) :: prefix_ call psb_erractionsave(err_act) info = psb_success_ if (present(iout)) then iout_ = iout else iout_ = psb_out_unit endif if (present(prefix)) then prefix_ = prefix else prefix_ = "" end if write(iout_,*) trim(prefix_), ' SuperLU Sparse Factorization Solver. ' call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine d_slu_solver_descr function d_slu_solver_sizeof(sv) result(val) implicit none ! Arguments class(amg_d_slu_solver_type), intent(in) :: sv integer(psb_epk_) :: val integer :: i val = 2*psb_sizeof_ip + psb_sizeof_dp val = val + sv%symbsize val = val + sv%numsize return end function d_slu_solver_sizeof function d_slu_solver_get_fmt() result(val) implicit none character(len=32) :: val val = "SuperLU solver" end function d_slu_solver_get_fmt function d_slu_solver_get_id() result(val) implicit none integer(psb_ipk_) :: val val = amg_slu_ end function d_slu_solver_get_id #endif end module amg_d_slu_solver