! ! ! AMG4PSBLAS version 1.0 ! Algebraic Multigrid Package ! based on PSBLAS (Parallel Sparse BLAS version 3.5) ! ! (C) Copyright 2020 ! ! 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(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 => d_slu_solver_bld procedure, pass(sv) :: apply_a => d_slu_solver_apply procedure, pass(sv) :: apply_v => 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_bld, d_slu_solver_apply, & & d_slu_solver_free, d_slu_solver_descr, & & d_slu_solver_sizeof, d_slu_solver_apply_vect, & & 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 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(:) integer :: ictxt,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 integer :: ictxt,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() ictxt = desc_a%get_context() call psb_info(ictxt, 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) 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 ! Local variables integer :: err_act integer :: ictxt, me, np character(len=20), parameter :: name='amg_d_slu_solver_descr' integer :: iout_ call psb_erractionsave(err_act) info = psb_success_ if (present(iout)) then iout_ = iout else iout_ = psb_out_unit endif write(iout_,*) ' 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