!!$ !!$ !!$ MLD2P4 version 2.0 !!$ MultiLevel Domain Decomposition Parallel Preconditioners Package !!$ based on PSBLAS (Parallel Sparse BLAS version 3.3) !!$ !!$ (C) Copyright 2008, 2010, 2012, 2015 !!$ !!$ Salvatore Filippone 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_c_bld_mlhier_array(a,desc_a,iszv,precv,info) use psb_base_mod use mld_c_inner_mod, mld_protect_name => mld_c_bld_mlhier_array use mld_c_prec_mod implicit none integer(psb_ipk_), intent(inout) :: iszv type(psb_cspmat_type),intent(in), target :: a type(psb_desc_type), intent(inout), target :: desc_a type(mld_c_onelev_type),intent(inout), allocatable, target :: precv(:) integer(psb_ipk_), intent(out) :: info ! Local integer(psb_ipk_) :: ictxt, me,np integer(psb_ipk_) :: err,i,k, err_act, newsz integer(psb_ipk_) :: ipv(mld_ifpsz_), val type(mld_c_onelev_type), allocatable :: tprecv(:) integer(psb_ipk_) :: int_err(5) integer(psb_ipk_) :: debug_level, debug_unit character(len=20) :: name, ch_err name = 'mld_bld_array_hierarchy' if (psb_get_errstatus().ne.0) return info=psb_success_ err=0 call psb_erractionsave(err_act) debug_unit = psb_get_debug_unit() debug_level = psb_get_debug_level() ictxt = desc_a%get_ctxt() call psb_info(ictxt,me,np) ! ! ! Build the matrix and the transfer operators corresponding ! to the remaining levels ! ! ! Check on the iprcparm contents: they should be the same ! on all processes. ! call psb_bcast(ictxt,precv(1)%parms) ! ! Finest level first; remember to fix base_a and base_desc ! precv(1)%base_a => a precv(1)%base_desc => desc_a iszv = size(precv) array_build_loop: do i=2, iszv ! ! Check on the iprcparm contents: they should be the same ! on all processes. ! call psb_bcast(ictxt,precv(i)%parms) ! ! Sanity checks on the parameters ! if (i= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & 'Calling mlprcbld at level ',i ! ! Build the mapping between levels i-1 and i and the matrix ! at level i ! if (info == psb_success_) call mld_coarse_bld(precv(i-1)%base_a,& & precv(i-1)%base_desc, precv(i),info) if (info /= psb_success_) then call psb_errpush(psb_err_internal_error_,name,& & a_err='Init upper level preconditioner') goto 9999 endif if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),& & 'Return from ',i,' call to mlprcbld ',info if (i>2) then if (all(precv(i)%map%naggr == precv(i-1)%map%naggr)) then newsz=i-1 end if call psb_bcast(ictxt,newsz) if (newsz > 0) exit array_build_loop end if end do array_build_loop if (newsz > 0) then if (me == 0) then write(debug_unit,*) trim(name),& &': Warning: aggregates from level ',& & newsz write(debug_unit,*) trim(name),& &': to level ',& & iszv,' coincide.' write(debug_unit,*) trim(name),& &': Number of levels actually used :',newsz write(debug_unit,*) end if allocate(tprecv(newsz),stat=info) if (info /= psb_success_) then call psb_errpush(psb_err_from_subroutine_,name,& & a_err='prec reallocation') goto 9999 endif do i=1,newsz-1 call precv(i)%move_alloc(tprecv(i),info) end do call precv(iszv)%move_alloc(tprecv(newsz),info) do i=newsz+1, iszv call precv(i)%free(info) end do call move_alloc(tprecv,precv) ! Ignore errors from transfer info = psb_success_ ! ! Restart iszv = newsz ! Fix the pointers, but the level 1 should ! be already OK do i=2, iszv - 1 precv(i)%base_a => precv(i)%ac precv(i)%base_desc => precv(i)%desc_ac precv(i)%map%p_desc_X => precv(i-1)%base_desc precv(i)%map%p_desc_Y => precv(i)%base_desc end do i = iszv if (info == psb_success_) call mld_coarse_bld(precv(i-1)%base_a,& & precv(i-1)%base_desc, precv(i),info) if (info /= psb_success_) then call psb_errpush(psb_err_from_subroutine_,name,a_err='coarse rebuild') goto 9999 endif end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine mld_c_bld_mlhier_array