! ! ! 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_sprecset.f90 ! ! Subroutine: amg_sprecseti ! Version: real ! ! This routine sets the integer parameters defining the preconditioner. More ! precisely, the integer parameter identified by 'what' is assigned the value ! contained in 'val'. ! For the multilevel preconditioners, the levels are numbered in increasing ! order starting from the finest one, i.e. level 1 is the finest level. ! ! To set character and real parameters, see amg_sprecsetc and amg_sprecsetr, ! respectively. ! ! ! Arguments: ! p - type(amg_sprec_type), input/output. ! The preconditioner data structure. ! what - integer, input. ! The number identifying the parameter to be set. ! A mnemonic constant has been associated to each of these ! numbers, as reported in the AMG4PSBLAS User's and Reference Guide. ! val - integer, input. ! The value of the parameter to be set. The list of allowed ! values is reported in the AMG4PSBLAS User's and Reference Guide. ! info - integer, output. ! Error code. ! ilev - integer, optional, input. ! For the multilevel preconditioner, the level at which the ! preconditioner parameter has to be set. ! If nlev is not present, the parameter identified by 'what' ! is set at all the appropriate levels. ! ! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to ! AMG4PSBLAS developers. Indeed, by using ilev it is possible to set different values ! of the same parameter at different levels 1,...,nlev-1, even in cases where ! the parameter must have the same value at all the levels but the coarsest one. ! For this reason, the interface amg_precset to this routine has been built in ! such a way that ilev is not visible to the user (see amg_prec_mod.f90). ! subroutine amg_scprecseti(p,what,val,info,ilev,ilmax,pos,idx) use psb_base_mod use amg_s_prec_mod, amg_protect_name => amg_scprecseti use amg_s_jac_smoother use amg_s_as_smoother use amg_s_diag_solver use amg_s_l1_diag_solver use amg_s_ilu_solver use amg_s_id_solver use amg_s_gs_solver use amg_s_ainv_solver use amg_s_invk_solver use amg_s_invt_solver #if defined(HAVE_SLU_) use amg_s_slu_solver #endif #if defined(HAVE_MUMPS_) use amg_s_mumps_solver #endif implicit none ! Arguments class(amg_sprec_type), intent(inout) :: p character(len=*), intent(in) :: what integer(psb_ipk_), intent(in) :: val integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), optional, intent(in) :: ilev,ilmax character(len=*), optional, intent(in) :: pos integer(psb_ipk_), intent(in), optional :: idx ! Local variables integer(psb_ipk_) :: ilev_, nlev_, ilmax_, il character(len=*), parameter :: name='amg_precseti' info = psb_success_ if (.not.allocated(p%precv)) then info = 3111 write(psb_err_unit,*) name,& & ': Error: uninitialized preconditioner,',& &' should call amg_PRECINIT' return endif nlev_ = size(p%precv) if (present(ilev)) then ilev_ = ilev if (present(ilmax)) then ilmax_ = ilmax else ilmax_ = ilev_ end if else ilev_ = 1 ilmax_ = nlev_ end if if ((ilev_<1).or.(ilev_ > nlev_)) then info = -1 write(psb_err_unit,*) name,& &': Error: invalid ILEV/NLEV combination',ilev_, nlev_ return endif if ((ilmax_<1).or.(ilmax_ > nlev_)) then info = -1 write(psb_err_unit,*) name,& &': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_ return endif select case(psb_toupper(what)) case ('MIN_COARSE_SIZE') p%ag_data%min_coarse_size = max(val,-1) return case ('MIN_COARSE_SIZE_PER_PROCESS') p%ag_data%min_coarse_size_per_process = max(val,-1) return case('MAX_LEVS') p%ag_data%max_levs = max(val,1) return case ('OUTER_SWEEPS') p%outer_sweeps = max(val,1) return end select ! ! Set preconditioner parameters at level ilev. ! if (present(ilev)) then select case(psb_toupper(what)) case('SUB_OVR','SUB_FILLIN','SMOOTHER_SWEEPS') do il=ilev_, ilmax_ call p%precv(il)%set(what,val,info,pos=pos) end do case('COARSE_SWEEPS') if (ilev_ /= nlev_) then write(psb_err_unit,*) name,& & ': Error: Inconsistent specification of WHAT vs. ILEV' info = -2 return end if call p%precv(nlev_)%set('SMOOTHER_SWEEPS',val,info,pos=pos) case('COARSE_FILLIN') if (ilev_ /= nlev_) then write(psb_err_unit,*) name,& & ': Error: Inconsistent specification of WHAT vs. ILEV' info = -2 return end if call p%precv(nlev_)%set('SUB_FILLIN',val,info,pos=pos) case('BJAC_ITRACE') if (ilev_ /= nlev_) then write(psb_err_unit,*) name,& & ': Error: Inconsistent specification of WHAT vs. ILEV' info = -2 return end if call p%precv(nlev_)%set('SMOOTHER_ITRACE',val,info,pos=pos) case('BJAC_RESCHECK') if (ilev_ /= nlev_) then write(psb_err_unit,*) name,& & ': Error: Inconsistent specification of WHAT vs. ILEV' info = -2 return end if call p%precv(nlev_)%set('SMOOTHER_RESIDUAL',val,info,pos=pos) case default do il=ilev_, ilmax_ call p%precv(il)%set(what,val,info,pos=pos,idx=idx) end do end select else if (.not.present(ilev)) then ! ! ilev not specified: set preconditioner parameters at all the appropriate ! levels ! select case(psb_toupper(trim(what))) case('SUB_OVR','SUB_FILLIN','SMOOTHER_SWEEPS') do ilev_=1,max(1,nlev_-1) call p%precv(ilev_)%set(what,val,info,pos=pos) if (info /= 0) return end do case('COARSE_SWEEPS') if (nlev_ > 1) then call p%precv(nlev_)%set('SMOOTHER_SWEEPS',val,info,pos=pos) end if case('COARSE_FILLIN') if (nlev_ > 1) then call p%precv(nlev_)%set('SUB_FILLIN',val,info,pos=pos) end if case('BJAC_ITRACE') if (nlev_ > 1) then call p%precv(nlev_)%set('SMOOTHER_ITRACE',val,info,pos=pos) end if case('BJAC_RESCHECK') if (nlev_ > 1) then call p%precv(nlev_)%set('SMOOTHER_RESIDUAL',val,info,pos=pos) end if case default do ilev_=1,nlev_ call p%precv(ilev_)%set(what,val,info,pos=pos,idx=idx) end do end select endif end subroutine amg_scprecseti ! ! Subroutine: amg_sprecsetc ! Version: real ! ! This routine sets the character parameters defining the preconditioner. More ! precisely, the character parameter identified by 'what' is assigned the value ! contained in 'val'. ! For the multilevel preconditioners, the levels are numbered in increasing ! order starting from the finest one, i.e. level 1 is the finest level. ! ! To set integer and real parameters, see amg_sprecseti and amg_sprecsetr, ! respectively. ! ! ! Arguments: ! p - type(amg_sprec_type), input/output. ! The preconditioner data structure. ! what - integer, input. ! The number identifying the parameter to be set. ! A mnemonic constant has been associated to each of these ! numbers, as reported in the AMG4PSBLAS User's and Reference Guide. ! string - character(len=*), input. ! The value of the parameter to be set. The list of allowed ! values is reported in the AMG4PSBLAS User's and Reference Guide. ! info - integer, output. ! Error code. ! ilev - integer, optional, input. ! For the multilevel preconditioner, the level at which the ! preconditioner parameter has to be set. ! If nlev is not present, the parameter identified by 'what' ! is set at all the appropriate levels. ! ! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to ! AMG4PSBLAS developers. Indeed, by using ilev it is possible to set different values ! of the same parameter at different levels 1,...,nlev-1, even in cases where ! the parameter must have the same value at all the levels but the coarsest one. ! For this reason, the interface amg_precset to this routine has been built in ! such a way that ilev is not visible to the user (see amg_prec_mod.f90). ! subroutine amg_scprecsetc(p,what,string,info,ilev,ilmax,pos,idx) use psb_base_mod use amg_s_prec_mod, amg_protect_name => amg_scprecsetc use amg_s_jac_smoother use amg_s_as_smoother use amg_s_diag_solver use amg_s_l1_diag_solver use amg_s_ilu_solver use amg_s_id_solver use amg_s_gs_solver use amg_s_ainv_solver use amg_s_invk_solver use amg_s_invt_solver #if defined(HAVE_SLU_) use amg_s_slu_solver #endif #if defined(HAVE_MUMPS_) use amg_s_mumps_solver #endif use amg_s_krm_solver, only : amg_s_krm_solver_type implicit none ! Arguments class(amg_sprec_type), intent(inout) :: p character(len=*), intent(in) :: what character(len=*), intent(in) :: string integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), optional, intent(in) :: ilev,ilmax character(len=*), optional, intent(in) :: pos integer(psb_ipk_), intent(in), optional :: idx ! Local variables integer(psb_ipk_) :: ilev_, nlev_,val,ilmax_, il character(len=*), parameter :: name='amg_precsetc' info = psb_success_ if (.not.allocated(p%precv)) then info = 3111 write(psb_err_unit,*) name,& & ': Error: uninitialized preconditioner,',& &' should call amg_PRECINIT' return endif nlev_ = size(p%precv) if (present(ilev)) then ilev_ = ilev if (present(ilmax)) then ilmax_ = ilmax else ilmax_ = ilev_ end if else ilev_ = 1 ilmax_ = nlev_ end if if ((ilev_<1).or.(ilev_ > nlev_)) then info = -1 write(psb_err_unit,*) name,& &': Error: invalid ILEV/NLEV combination',ilev_, nlev_ return endif if ((ilmax_<1).or.(ilmax_ > nlev_)) then info = -1 write(psb_err_unit,*) name,& &': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_ return endif ! ! Set preconditioner parameters at level ilev. ! if (present(ilev)) then select case(psb_toupper(what)) case('SMOOTHER_TYPE') ! Select the type of smoother between the one implemented in the library ! every new smoother should be added here select case(psb_toupper(string)) case ('BJAC') do il=ilev_, ilmax_ call p%precv(il)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) end do case ('L1-BJAC') do il=ilev_, ilmax_ call p%precv(il)%set('SMOOTHER_TYPE',amg_l1_bjac_,info,pos=pos) end do case('GS','FWGS','FBGS') do il=ilev_, ilmax_ call p%precv(il)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(il)%set('SUB_SOLVE',amg_gs_,info,pos=pos) end do case('L1-GS','L1-FWGS','L1-FBGS') do il=ilev_, ilmax_ call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_l1_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_gs_,info,pos=pos) end do case ('BWGS') do il=ilev_, ilmax_ call p%precv(il)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(il)%set('SUB_SOLVE',amg_bwgs_,info,pos=pos) end do case('JACOBI') do il=ilev_, ilmax_ call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_diag_scale_,info,pos=pos) end do case('L1-JACOBI') do il=ilev_, ilmax_ call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_l1_diag_scale_,info,pos=pos) end do end select case('SUB_SOLVE','ML_CYCLE','PAR_AGGR_ALG','AGGR_TYPE','SUB_RESTR'& & ,'SUB_PROL') ! These are handled elsewhere do il=ilev_, ilmax_ call p%precv(nlev_)%set(what,string,info,pos=pos) end do case('COARSE_MAT') ! Select if the coarsest matrix is handled in a distributed way, few ! rows per rank, or if it is replicated completely on every rank select case(psb_toupper(string)) case('DISTR') do il=ilev_, ilmax_ call p%precv(il)%set(what,amg_distr_mat_,info,pos=pos) end do case('REPL') do il=ilev_, ilmax_ call p%precv(il)%set(what,amg_repl_mat_,info,pos=pos) end do case('BJAC_STOP') do il=ilev_, ilmax_ call p%precv(il)%set('SMOOTHER_STOP',string,info,pos=pos) end do case('BJAC_TRACE') do il=ilev_, ilmax_ call p%precv(il)%set('SMOOTHER_TRACE',string,info,pos=pos) end do case('COARSE_SUBSOLVE') if (ilev_ /= nlev_) then write(psb_err_unit,*) name,& & ': Error: Inconsistent specification of WHAT vs. ILEV' info = -2 return end if call p%precv(ilev_)%set('SUB_SOLVE',string,info,pos=pos) case('COARSE_SOLVE') if (ilev_ /= nlev_) then write(psb_err_unit,*) name,& & ': Error: Inconsistent specification of WHAT vs. ILEV' info = -2 return end if if (nlev_ > 1) then select case (psb_toupper(string)) case('BJAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) case('L1-BJAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_l1_bjac_,info,pos=pos) #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) #else call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) #endif call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info) case('SLU') #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('ILU') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) case('ILUT') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_t_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) case('MILU') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_milu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) case('MUMPS') #if defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('UMF') #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('SLUDIST') #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('JACOBI','JAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_diag_scale_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('L1-JACOBI','L1-JAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_l1_diag_scale_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('GS','FBGS') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_gs_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('BWGS') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_bwgs_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('L1-GS','L1-FBGS') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_l1_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_gs_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('KRM') block type(amg_s_krm_solver_type) :: krm_slv call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_krm_,info,pos=pos) call p%precv(nlev_)%set(krm_slv,info) call p%precv(nlev_)%default() call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) end block end select end if end select case default do il=ilev_, ilmax_ call p%precv(il)%set(what,string,info,pos=pos,idx=idx) end do end select else if (.not.present(ilev)) then ! ! ilev not specified: set preconditioner parameters at all the appropriate ! levels ! select case(psb_toupper(trim(what))) case('SUB_SOLVE','SUB_RESTR','SUB_PROL',& & 'SMOOTHER_TYPE') do ilev_=1,max(1,nlev_-1) call p%precv(ilev_)%set(what,string,info,pos=pos) if (info /= 0) return end do case('ML_CYCLE','PAR_AGGR_ALG','AGGR_ORD','AGGR_PROL','AGGR_TYPE',& & 'AGGR_OMEGA_ALG','AGGR_EIG','AGGR_FILTER') do ilev_=1,nlev_ call p%precv(ilev_)%set(what,string,info,pos=pos) if (info /= 0) return end do case('COARSE_MAT') if (nlev_ > 1) then call p%precv(nlev_)%set('COARSE_MAT',string,info,pos=pos) end if case('COARSE_SOLVE') if (nlev_ > 1) then call p%precv(nlev_)%set('COARSE_SOLVE',string,info,pos=pos) select case (psb_toupper(trim(string))) case('BJAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) case('L1-BJAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_l1_bjac_,info,pos=pos) #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) #else call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) #endif call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info) case('SLU') #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('ILU') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) case('ILUT') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_t_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) case('MILU') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_milu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) case('MUMPS') #if defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('UMF') #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('SLUDIST') #if defined(HAVE_SLU_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_slu_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_repl_mat_,info,pos=pos) #elif defined(HAVE_MUMPS_) call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_mumps_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #else call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',psb_ilu_n_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) #endif case('JACOBI','JAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_diag_scale_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('L1-JACOBI','L1-JAC') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_l1_diag_scale_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('GS','FBGS') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_gs_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('BWGS') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_bwgs_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('L1-FBGS','L1-GS') call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_l1_bjac_,info,pos=pos) call p%precv(nlev_)%set('SUB_SOLVE',amg_gs_,info,pos=pos) call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) case('KRM') block type(amg_s_krm_solver_type) :: krm_slv call p%precv(nlev_)%set('SMOOTHER_TYPE',amg_krm_,info,pos=pos) call p%precv(nlev_)%set(krm_slv,info) call p%precv(nlev_)%default() call p%precv(nlev_)%set('COARSE_MAT',amg_distr_mat_,info,pos=pos) end block end select endif case('BJAC_STOP') if (nlev_ > 1) then call p%precv(il)%set('SMOOTHER_STOP',string,info,pos=pos) end if case('BJAC_TRACE') if (nlev_ > 1) then call p%precv(il)%set('SMOOTHER_TRACE',string,info,pos=pos) end if case('COARSE_SUBSOLVE') if (nlev_ > 1) then call p%precv(nlev_)%set('SUB_SOLVE',string,info,pos=pos) endif case default do ilev_=1,nlev_ call p%precv(ilev_)%set(what,string,info,pos=pos,idx=idx) end do end select endif end subroutine amg_scprecsetc ! ! Subroutine: amg_sprecsetr ! Version: real ! ! This routine sets the real parameters defining the preconditioner. More ! precisely, the real parameter identified by 'what' is assigned the value ! contained in 'val'. ! For the multilevel preconditioners, the levels are numbered in increasing ! order starting from the finest one, i.e. level 1 is the finest level. ! ! To set integer and character parameters, see amg_sprecseti and amg_sprecsetc, ! respectively. ! ! Arguments: ! p - type(amg_sprec_type), input/output. ! The preconditioner data structure. ! what - integer, input. ! The number identifying the parameter to be set. ! A mnemonic constant has been associated to each of these ! numbers, as reported in the AMG4PSBLAS User's and Reference Guide. ! val - real(psb_spk_), input. ! The value of the parameter to be set. The list of allowed ! values is reported in the AMG4PSBLAS User's and Reference Guide. ! info - integer, output. ! Error code. ! ilev - integer, optional, input. ! For the multilevel preconditioner, the level at which the ! preconditioner parameter has to be set. ! If nlev is not present, the parameter identified by 'what' ! is set at all the appropriate levels. ! ! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to ! AMG4PSBLAS developers. Indeed, by using ilev it is possible to set different values ! of the same parameter at different levels 1,...,nlev-1, even in cases where ! the parameter must have the same value at all the levels but the coarsest one. ! For this reason, the interface amg_precset to this routine has been built in ! such a way that ilev is not visible to the user (see amg_prec_mod.f90). ! subroutine amg_scprecsetr(p,what,val,info,ilev,ilmax,pos,idx) use psb_base_mod use amg_s_prec_mod, amg_protect_name => amg_scprecsetr implicit none ! Arguments class(amg_sprec_type), intent(inout) :: p character(len=*), intent(in) :: what real(psb_spk_), intent(in) :: val integer(psb_ipk_), intent(out) :: info integer(psb_ipk_), optional, intent(in) :: ilev,ilmax character(len=*), optional, intent(in) :: pos integer(psb_ipk_), intent(in), optional :: idx ! Local variables integer(psb_ipk_) :: ilev_,nlev_, ilmax_, il real(psb_spk_) :: thr character(len=*), parameter :: name='amg_precsetr' info = psb_success_ if (present(ilev)) then ilev_ = ilev else ilev_ = 1 end if select case(psb_toupper(what)) case ('MIN_CR_RATIO') p%ag_data%min_cr_ratio = max(sone,val) return end select if (.not.allocated(p%precv)) then write(psb_err_unit,*) name,& &': Error: uninitialized preconditioner,',& &' should call amg_PRECINIT' info = 3111 return endif nlev_ = size(p%precv) if (present(ilev)) then ilev_ = ilev if (present(ilmax)) then ilmax_ = ilmax else ilmax_ = ilev_ end if else ilev_ = 1 ilmax_ = nlev_ end if if ((ilev_<1).or.(ilev_ > nlev_)) then info = -1 write(psb_err_unit,*) name,& &': Error: invalid ILEV/NLEV combination',ilev_, nlev_ return endif if ((ilmax_<1).or.(ilmax_ > nlev_)) then info = -1 write(psb_err_unit,*) name,& &': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_ return endif ! ! Set preconditioner parameters at level ilev. ! if (present(ilev)) then select case(psb_toupper(trim(what))) case('BJAC_STOPTOL') do il=ilev_, ilmax_ call p%precv(il)%set('SMOOTHER_STOPTOL',val,info,pos=pos) end do case default ! Nothing to do here, setted elsewhere do il=ilev_, ilmax_ call p%precv(il)%set(what,val,info,pos=pos,idx=idx) end do end select else if (.not.present(ilev)) then ! ! ilev not specified: set preconditioner parameters at all the appropriate levels ! select case(psb_toupper(what)) case('COARSE_ILUTHRS') ilev_=nlev_ call p%precv(ilev_)%set('SUB_ILUTHRS',val,info,pos=pos) case('BJAC_STOPTOL') ilev_=nlev_ call p%precv(ilev_)%set('SMOOTHER_STOPTOL',val,info,pos=pos) case default do il=1,nlev_ call p%precv(il)%set(what,val,info,pos=pos,idx=idx) end do end select endif end subroutine amg_scprecsetr