!!$ !!$ !!$ MLD2P4 version 2.0 !!$ MultiLevel Domain Decomposition Parallel Preconditioners Package !!$ based on PSBLAS (Parallel Sparse BLAS version 3.0) !!$ !!$ (C) Copyright 2008,2009,2010, 2010 !!$ !!$ 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. !!$ !!$ ! ! ! ! Identity solver. Reference for nullprec. ! ! module mld_s_id_solver use mld_s_prec_type type, extends(mld_s_base_solver_type) :: mld_s_id_solver_type contains procedure, pass(sv) :: build => s_id_solver_bld procedure, pass(sv) :: apply => s_id_solver_apply procedure, pass(sv) :: free => s_id_solver_free procedure, pass(sv) :: seti => s_id_solver_seti procedure, pass(sv) :: setc => s_id_solver_setc procedure, pass(sv) :: setr => s_id_solver_setr procedure, pass(sv) :: descr => s_id_solver_descr procedure, pass(sv) :: sizeof => s_id_solver_sizeof end type mld_s_id_solver_type private :: s_id_solver_bld, s_id_solver_apply, & & s_id_solver_free, s_id_solver_seti, & & s_id_solver_setc, s_id_solver_setr,& & s_id_solver_descr, s_id_solver_sizeof contains subroutine s_id_solver_apply(alpha,sv,x,beta,y,desc_data,trans,work,info) use psb_base_mod type(psb_desc_type), intent(in) :: desc_data class(mld_s_id_solver_type), intent(in) :: sv real(psb_spk_),intent(inout) :: x(:) real(psb_spk_),intent(inout) :: y(:) real(psb_spk_),intent(in) :: alpha,beta character(len=1),intent(in) :: trans real(psb_spk_),target, intent(inout) :: work(:) integer, intent(out) :: info integer :: n_row,n_col real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:) integer :: ictxt,np,me,i, err_act character :: trans_ character(len=20) :: name='s_id_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 call psb_geaxpby(alpha,x,beta,y,desc_data,info) call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error() return end if return end subroutine s_id_solver_apply subroutine s_id_solver_bld(a,desc_a,sv,upd,info,b) use psb_base_mod Implicit None ! Arguments type(psb_sspmat_type), intent(in), target :: a Type(psb_desc_type), Intent(in) :: desc_a class(mld_s_id_solver_type), intent(inout) :: sv character, intent(in) :: upd integer, intent(out) :: info type(psb_sspmat_type), intent(in), target, optional :: b ! Local variables integer :: n_row,n_col, nrow_a, nztota real(psb_spk_), pointer :: ww(:), aux(:), tx(:),ty(:) integer :: ictxt,np,me,i, err_act, debug_unit, debug_level character(len=20) :: name='s_id_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' if (debug_level >= psb_debug_outer_) & & write(debug_unit,*) me,' ',trim(name),' end' call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act == psb_act_abort_) then call psb_error() return end if return end subroutine s_id_solver_bld subroutine s_id_solver_seti(sv,what,val,info) use psb_base_mod Implicit None ! Arguments class(mld_s_id_solver_type), intent(inout) :: sv integer, intent(in) :: what integer, intent(in) :: val integer, intent(out) :: info Integer :: err_act character(len=20) :: name='s_id_solver_seti' info = psb_success_ return end subroutine s_id_solver_seti subroutine s_id_solver_setc(sv,what,val,info) use psb_base_mod Implicit None ! Arguments class(mld_s_id_solver_type), intent(inout) :: sv integer, intent(in) :: what character(len=*), intent(in) :: val integer, intent(out) :: info Integer :: err_act, ival character(len=20) :: name='s_id_solver_setc' info = psb_success_ return end subroutine s_id_solver_setc subroutine s_id_solver_setr(sv,what,val,info) use psb_base_mod Implicit None ! Arguments class(mld_s_id_solver_type), intent(inout) :: sv integer, intent(in) :: what real(psb_spk_), intent(in) :: val integer, intent(out) :: info Integer :: err_act character(len=20) :: name='s_id_solver_setr' info = psb_success_ return end subroutine s_id_solver_setr subroutine s_id_solver_free(sv,info) use psb_base_mod Implicit None ! Arguments class(mld_s_id_solver_type), intent(inout) :: sv integer, intent(out) :: info Integer :: err_act character(len=20) :: name='s_id_solver_free' info = psb_success_ return end subroutine s_id_solver_free subroutine s_id_solver_descr(sv,info,iout,coarse) use psb_base_mod Implicit None ! Arguments class(mld_s_id_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='mld_s_id_solver_descr' integer :: iout_ info = psb_success_ if (present(iout)) then iout_ = iout else iout_ = 6 endif write(iout_,*) ' Identity local solver ' return end subroutine s_id_solver_descr function s_id_solver_sizeof(sv) result(val) use psb_base_mod implicit none ! Arguments class(mld_s_id_solver_type), intent(in) :: sv integer(psb_long_int_k_) :: val integer :: i val = 0 return end function s_id_solver_sizeof end module mld_s_id_solver