!!$ !!$ !!$ MD2P4 !!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS !!$ for !!$ Parallel Sparse BLAS v2.0 !!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari University of Rome Tor Vergata !!$ Daniela Di Serafino II University of Naples !!$ Pasqua D'Ambra ICAR-CNR !!$ !!$ 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 MD2P4 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 MD2P4 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 psb_dprecset(p,ptype,info,iv,rs,rv) use psb_serial_mod use psb_descriptor_type use psb_prec_type implicit none type(psb_dprec_type), intent(inout) :: p character(len=*), intent(in) :: ptype integer, intent(out) :: info integer, optional, intent(in) :: iv(:) real(kind(1.d0)), optional, intent(in) :: rs real(kind(1.d0)), optional, intent(in) :: rv(:) type(psb_dbaseprc_type), pointer :: bpv(:)=>null() character(len=len(ptype)) :: typeup integer :: isz, err info = 0 if (.not.associated(p%baseprecv)) then allocate(p%baseprecv(1),stat=err) call psb_nullify_baseprec(p%baseprecv(1)) endif if (.not.associated(p%baseprecv(1)%iprcparm)) then allocate(p%baseprecv(1)%iprcparm(ifpsz),stat=err) if (err/=0) then write(0,*)'Precset Memory Failure',err endif end if select case(toupper(ptype(1:len_trim(ptype)))) case ('NONE','NOPREC') p%baseprecv(1)%iprcparm(:) = 0 p%baseprecv(1)%iprcparm(p_type_) = noprec_ p%baseprecv(1)%iprcparm(f_type_) = f_none_ p%baseprecv(1)%iprcparm(restr_) = psb_none_ p%baseprecv(1)%iprcparm(prol_) = psb_none_ p%baseprecv(1)%iprcparm(iren_) = 0 p%baseprecv(1)%iprcparm(n_ovr_) = 0 p%baseprecv(1)%iprcparm(jac_sweeps_) = 1 case ('DIAG','DIAGSC') p%baseprecv(1)%iprcparm(:) = 0 p%baseprecv(1)%iprcparm(p_type_) = diagsc_ p%baseprecv(1)%iprcparm(f_type_) = f_none_ p%baseprecv(1)%iprcparm(restr_) = psb_none_ p%baseprecv(1)%iprcparm(prol_) = psb_none_ p%baseprecv(1)%iprcparm(iren_) = 0 p%baseprecv(1)%iprcparm(n_ovr_) = 0 p%baseprecv(1)%iprcparm(jac_sweeps_) = 1 case ('BJA','ILU') p%baseprecv(1)%iprcparm(:) = 0 p%baseprecv(1)%iprcparm(p_type_) = bja_ p%baseprecv(1)%iprcparm(f_type_) = f_ilu_n_ p%baseprecv(1)%iprcparm(restr_) = psb_none_ p%baseprecv(1)%iprcparm(prol_) = psb_none_ p%baseprecv(1)%iprcparm(iren_) = 0 p%baseprecv(1)%iprcparm(n_ovr_) = 0 p%baseprecv(1)%iprcparm(ilu_fill_in_) = 0 p%baseprecv(1)%iprcparm(jac_sweeps_) = 1 case ('ASM','AS') p%baseprecv(1)%iprcparm(:) = 0 ! Defaults first p%baseprecv(1)%iprcparm(p_type_) = asm_ p%baseprecv(1)%iprcparm(f_type_) = f_ilu_n_ p%baseprecv(1)%iprcparm(restr_) = psb_halo_ p%baseprecv(1)%iprcparm(prol_) = psb_none_ p%baseprecv(1)%iprcparm(iren_) = 0 p%baseprecv(1)%iprcparm(n_ovr_) = 1 p%baseprecv(1)%iprcparm(ilu_fill_in_) = 0 p%baseprecv(1)%iprcparm(jac_sweeps_) = 1 if (present(iv)) then isz = size(iv) if (isz >= 1) p%baseprecv(1)%iprcparm(n_ovr_) = iv(1) if (isz >= 2) p%baseprecv(1)%iprcparm(restr_) = iv(2) if (isz >= 3) p%baseprecv(1)%iprcparm(prol_) = iv(3) if (isz >= 4) p%baseprecv(1)%iprcparm(f_type_) = iv(4) ! Do not consider renum for the time being. !!$ if (isz >= 5) p%baseprecv(1)%iprcparm(iren_) = iv(5) end if case ('ML', '2L', '2LEV') select case (size(p%baseprecv)) case(1) ! Reallocate allocate(bpv(2),stat=err) if (err/=0) then write(0,*)'Precset Memory Failure 2l:1',err endif bpv(1) = p%baseprecv(1) call psb_nullify_baseprec(bpv(2)) deallocate(p%baseprecv) p%baseprecv => bpv nullify(bpv) case(2) ! Do nothing case default ! Error end select allocate(p%baseprecv(2)%iprcparm(ifpsz),stat=err) if (err/=0) then write(0,*)'Precset Memory Failure 2l:2',err endif allocate(p%baseprecv(2)%dprcparm(dfpsz),stat=err) if (err/=0) then write(0,*)'Precset Memory Failure 2l:3',err endif p%baseprecv(2)%iprcparm(:) = 0 p%baseprecv(2)%iprcparm(p_type_) = bja_ p%baseprecv(2)%iprcparm(restr_) = psb_none_ p%baseprecv(2)%iprcparm(prol_) = psb_none_ p%baseprecv(2)%iprcparm(iren_) = 0 p%baseprecv(2)%iprcparm(n_ovr_) = 0 p%baseprecv(2)%iprcparm(ml_type_) = mult_ml_prec_ p%baseprecv(2)%iprcparm(aggr_alg_) = loc_aggr_ p%baseprecv(2)%iprcparm(smth_kind_) = smth_omg_ p%baseprecv(2)%iprcparm(coarse_mat_) = mat_distr_ p%baseprecv(2)%iprcparm(smth_pos_) = post_smooth_ p%baseprecv(2)%iprcparm(glb_smth_) = 1 p%baseprecv(2)%iprcparm(om_choice_) = lib_choice_ p%baseprecv(2)%iprcparm(f_type_) = f_ilu_n_ p%baseprecv(2)%iprcparm(ilu_fill_in_) = 0 p%baseprecv(2)%dprcparm(smooth_omega_) = 4.d0/3.d0 p%baseprecv(2)%iprcparm(jac_sweeps_) = 1 if (present(iv)) then isz = size(iv) if (isz >= 1) p%baseprecv(2)%iprcparm(ml_type_) = iv(1) if (isz >= 2) p%baseprecv(2)%iprcparm(aggr_alg_) = iv(2) if (isz >= 3) p%baseprecv(2)%iprcparm(smth_kind_) = iv(3) if (isz >= 4) p%baseprecv(2)%iprcparm(coarse_mat_) = iv(4) if (isz >= 5) p%baseprecv(2)%iprcparm(smth_pos_) = iv(5) if (isz >= 6) p%baseprecv(2)%iprcparm(f_type_) = iv(6) if (isz >= 7) p%baseprecv(2)%iprcparm(jac_sweeps_) = iv(7) end if if (present(rs)) then p%baseprecv(2)%iprcparm(om_choice_) = user_choice_ p%baseprecv(2)%dprcparm(smooth_omega_) = rs end if case default write(0,*) 'Unknown preconditioner type request "',ptype,'"' err = 2 end select info = err end subroutine psb_dprecset