! ! Parallel Sparse BLAS version 3.5 ! (C) Copyright 2006, 2010, 2015, 2017 ! Salvatore Filippone Cranfield University ! Alfredo Buttari CNRS-IRIT, Toulouse ! ! 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 PSBLAS 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 PSBLAS 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_d_diag_dump(prec,info,prefix,head) use psb_base_mod use psb_d_diagprec, psb_protect_name => psb_d_diag_dump implicit none class(psb_d_diag_prec_type), intent(in) :: prec integer(psb_ipk_), intent(out) :: info character(len=*), intent(in), optional :: prefix,head integer(psb_ipk_) :: i, j, il1, iln, lname, lev integer(psb_ipk_) :: ictxt,iam, np character(len=80) :: prefix_ character(len=120) :: fname ! len should be at least 20 more than ! len of prefix_ info = 0 ictxt = prec%get_ctxt() call psb_info(ictxt,iam,np) if (present(prefix)) then prefix_ = trim(prefix(1:min(len(prefix),len(prefix_)))) else prefix_ = "dump_diag_d" end if lname = len_trim(prefix_) fname = trim(prefix_) write(fname(lname+1:lname+5),'(a,i3.3)') '_p',iam write(fname(lname+1:),'(a,a)')'_diag.mtx' if (allocated(prec%dv)) & & call psb_geprt(fname,prec%dv%v%v,head=head) end subroutine psb_d_diag_dump subroutine psb_d_diag_apply_vect(alpha,prec,x,beta,y,desc_data,info,trans,work) use psb_base_mod use psb_d_diagprec, psb_protect_name => psb_d_diag_apply_vect implicit none type(psb_desc_type),intent(in) :: desc_data class(psb_d_diag_prec_type), intent(inout) :: prec type(psb_d_vect_type),intent(inout) :: x real(psb_dpk_),intent(in) :: alpha, beta type(psb_d_vect_type),intent(inout) :: y integer(psb_ipk_), intent(out) :: info character(len=1), optional :: trans real(psb_dpk_),intent(inout), optional, target :: work(:) integer(psb_ipk_) :: err_act, nrow, ierr(5) character(len=20) :: name='d_diag_prec_apply' real(psb_dpk_), pointer :: ww(:) class(psb_d_base_vect_type), allocatable :: dw call psb_erractionsave(err_act) ! ! This is the base version and we should throw an error. ! Or should it be the DIAG preonditioner??? ! info = psb_success_ nrow = desc_data%get_local_rows() if (x%get_nrows() < nrow) then info = 36; ierr(1) = 2; ierr(2) = nrow; call psb_errpush(info,name,i_err=ierr) goto 9999 end if if (y%get_nrows() < nrow) then info = 36; ierr(1) = 3; ierr(2) = nrow; call psb_errpush(info,name,i_err=ierr) goto 9999 end if if (.not.allocated(prec%d)) then info = 1124 call psb_errpush(info,name,a_err="preconditioner: D") goto 9999 end if if (size(prec%d) < nrow) then info = 1124 call psb_errpush(info,name,a_err="preconditioner: D") goto 9999 end if call y%mlt(alpha,prec%dv,x,beta,info,conjgx=trans) if (info /= psb_success_) then call psb_errpush(psb_err_from_subroutine_, & & name,a_err='vect%mlt') goto 9999 end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine psb_d_diag_apply_vect subroutine psb_d_diag_apply(alpha,prec,x,beta,y,desc_data,info,trans,work) use psb_base_mod use psb_d_diagprec, psb_protect_name => psb_d_diag_apply implicit none type(psb_desc_type),intent(in) :: desc_data class(psb_d_diag_prec_type), intent(inout) :: prec real(psb_dpk_),intent(inout) :: x(:) real(psb_dpk_),intent(in) :: alpha, beta real(psb_dpk_),intent(inout) :: y(:) integer(psb_ipk_), intent(out) :: info character(len=1), optional :: trans real(psb_dpk_),intent(inout), optional, target :: work(:) integer(psb_ipk_) :: err_act, nrow, ierr(5) character :: trans_ character(len=20) :: name='d_diag_prec_apply' real(psb_dpk_), pointer :: ww(:) call psb_erractionsave(err_act) info = psb_success_ nrow = desc_data%get_local_rows() if (size(x) < nrow) then info = 36; ierr(1) = 2; ierr(2) = nrow; call psb_errpush(info,name,i_err=ierr) goto 9999 end if if (size(y) < nrow) then info = 36; ierr(1) = 3; ierr(2) = nrow; call psb_errpush(info,name,i_err=ierr) goto 9999 end if if (.not.allocated(prec%d)) then info = 1124 call psb_errpush(info,name,a_err="preconditioner: D") goto 9999 end if if (size(prec%d) < nrow) then info = 1124 call psb_errpush(info,name,a_err="preconditioner: D") goto 9999 end if if (present(trans)) then trans_ = psb_toupper(trans) else trans_='N' end if select case(trans_) case('N') case('T','C') case default info=psb_err_iarg_invalid_i_ ierr(1) = 6 call psb_errpush(info,name,i_err=ierr,a_err=trans_) goto 9999 end select if (size(work) >= size(x)) then ww => work else allocate(ww(size(x)),stat=info) if (info /= psb_success_) then ierr(1) = size(x) call psb_errpush(psb_err_alloc_request_,name,& & i_err=ierr,a_err='real(psb_dpk_)') goto 9999 end if end if if (trans_ == 'C') then ww(1:nrow) = x(1:nrow)*(prec%d(1:nrow)) else ww(1:nrow) = x(1:nrow)*prec%d(1:nrow) endif call psb_geaxpby(alpha,ww,beta,y,desc_data,info) if (size(work) < size(x)) then deallocate(ww,stat=info) if (info /= psb_success_) then call psb_errpush(psb_err_from_subroutine_,name,a_err='Deallocate') goto 9999 end if end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine psb_d_diag_apply subroutine psb_d_diag_precbld(a,desc_a,prec,info,upd,amold,afmt,vmold) use psb_base_mod use psb_d_diagprec, psb_protect_name => psb_d_diag_precbld Implicit None type(psb_dspmat_type), intent(in), target :: a type(psb_desc_type), intent(in), target :: desc_a class(psb_d_diag_prec_type),intent(inout) :: prec integer(psb_ipk_), intent(out) :: info character, intent(in), optional :: upd character(len=*), intent(in), optional :: afmt class(psb_d_base_sparse_mat), intent(in), optional :: amold class(psb_d_base_vect_type), intent(in), optional :: vmold integer(psb_ipk_) :: err_act, nrow,i character(len=20) :: name='d_diag_precbld' call psb_erractionsave(err_act) info = psb_success_ nrow = desc_a%get_local_rows() prec%d=a%get_diag(info) if (info /= psb_success_) then info = psb_err_from_subroutine_ call psb_errpush(info,name, a_err='get_diag') goto 9999 end if call psb_realloc(desc_a%get_local_cols(),prec%d,info,pad=done) do i=1,nrow if (prec%d(i) == dzero) then prec%d(i) = done else prec%d(i) = done/prec%d(i) endif end do allocate(prec%dv,stat=info) if (info == 0) then if (present(vmold)) then allocate(prec%dv%v,mold=vmold,stat=info) else allocate(psb_d_base_vect_type :: prec%dv%v,stat=info) end if end if if (info == 0) then call prec%dv%bld(prec%d) else write(0,*) 'Error on precbld ',info end if call psb_erractionrestore(err_act) return 9999 call psb_error_handler(err_act) return end subroutine psb_d_diag_precbld