!!$ !!$ !!$ MLD2P4 version 2.1 !!$ MultiLevel Domain Decomposition Parallel Preconditioners Package !!$ based on PSBLAS (Parallel Sparse BLAS version 3.4) !!$ !!$ (C) Copyright 2008, 2010, 2012, 2015, 2017 !!$ !!$ Salvatore Filippone Cranfield University !!$ Ambra Abdullahi Hassan University of Rome Tor Vergata !!$ Alfredo Buttari CNRS-IRIT, Toulouse !!$ Pasqua D'Ambra ICAR-CNR, Naples !!$ Daniela di Serafino Second University of Naples !!$ !!$ 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. !!$ !!$ subroutine mld_d_ilu_solver_apply_vect(alpha,sv,x,beta,y,desc_data,& & trans,work,info,init,initu) use psb_base_mod use mld_d_ilu_solver, mld_protect_name => mld_d_ilu_solver_apply_vect implicit none type(psb_desc_type), intent(in) :: desc_data class(mld_d_ilu_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(:) integer(psb_ipk_), intent(out) :: info character, intent(in), optional :: init type(psb_d_vect_type),intent(inout), optional :: initu integer(psb_ipk_) :: n_row,n_col type(psb_d_vect_type) :: wv, wv1 real(psb_dpk_), pointer :: ww(:), aux(:), tx(:),ty(:) integer(psb_ipk_) :: ictxt,np,me,i, err_act character :: trans_ character(len=20) :: name='d_ilu_solver_apply' call psb_erractionsave(err_act) info = psb_success_ trans_ = psb_toupper(trans) select case(trans_) case('N') case('T') case('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 (x%get_nrows() < n_row) then info = 36 call psb_errpush(info,name,& & i_err=(/itwo,n_row,izero,izero,izero/)) goto 9999 end if if (y%get_nrows() < n_row) then info = 36 call psb_errpush(info,name,& & i_err=(/ithree,n_row,izero,izero,izero/)) goto 9999 end if if (.not.allocated(sv%dv%v)) then info = 1124 call psb_errpush(info,name,a_err="preconditioner: D") goto 9999 end if if (sv%dv%get_nrows() < n_row) then info = 1124 call psb_errpush(info,name,a_err="preconditioner: DV") goto 9999 end if if (n_col <= size(work)) then ww => work(1:n_col) if ((4*n_col+n_col) <= size(work)) then aux => work(n_col+1:) else allocate(aux(4*n_col),stat=info) endif else allocate(ww(n_col),aux(4*n_col),stat=info) endif if (info /= psb_success_) then info=psb_err_alloc_request_ call psb_errpush(info,name,& & i_err=(/5*n_col,izero,izero,izero,izero/),& & a_err='real(psb_dpk_)') goto 9999 end if call psb_geasb(wv,desc_data,info,mold=x%v,scratch=.true.) call psb_geasb(wv1,desc_data,info,mold=x%v,scratch=.true.) select case(trans_) case('N') call psb_spsm(done,sv%l,x,dzero,wv,desc_data,info,& & trans=trans_,scale='L',diag=sv%dv,choice=psb_none_,work=aux) if (info == psb_success_) call psb_spsm(alpha,sv%u,wv,beta,y,desc_data,info,& & trans=trans_,scale='U',choice=psb_none_, work=aux) case('T') call psb_spsm(done,sv%u,x,dzero,wv,desc_data,info,& & trans=trans_,scale='L',diag=sv%dv,choice=psb_none_,work=aux) if (info == psb_success_) call psb_spsm(alpha,sv%l,wv,beta,y,desc_data,info,& & trans=trans_,scale='U',choice=psb_none_,work=aux) case('C') call psb_spsm(done,sv%u,x,dzero,wv,desc_data,info,& & trans=trans_,scale='U',choice=psb_none_,work=aux) call wv1%mlt(done,sv%dv,wv,dzero,info,conjgx=trans_) if (info == psb_success_) call psb_spsm(alpha,sv%l,wv1,beta,y,desc_data,info,& & trans=trans_,scale='U',choice=psb_none_,work=aux) 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_) then call psb_errpush(psb_err_internal_error_,name,& & a_err='Error in subsolve') goto 9999 endif call wv%free(info) call wv1%free(info) if (n_col <= size(work)) then if ((4*n_col+n_col) <= size(work)) then else deallocate(aux) endif else deallocate(ww,aux) endif call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine mld_d_ilu_solver_apply_vect