!!$ !!$ Parallel Sparse BLAS v2.0 !!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata !!$ Alfredo Buttari University of Rome Tor Vergata !!$ !!$ 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_zbjac_aply(alpha,prec,x,beta,y,desc_data,trans,work,info) ! ! Compute Y <- beta*Y + alpha*K^-1 X ! where K is a a Block Jacobi preconditioner stored in prec ! Note that desc_data may or may not be the same as prec%desc_data, ! but since both are INTENT(IN) this should be legal. ! use psb_base_mod use psb_prec_type implicit none type(psb_desc_type), intent(in) :: desc_data type(psb_zprec_type), intent(in) :: prec complex(kind(0.d0)),intent(inout) :: x(:), y(:) complex(kind(0.d0)),intent(in) :: alpha,beta character(len=1) :: trans complex(kind(0.d0)),target :: work(:) integer, intent(out) :: info ! Local variables integer :: n_row,n_col complex(kind(1.d0)), pointer :: ww(:), aux(:), tx(:),ty(:),tb(:) character ::diagl, diagu integer :: ictxt,np,me,i, isz, nrg, err_act, int_err(5) real(kind(1.d0)) :: t1, t2, t3, t4, t5, t6, t7 logical,parameter :: debug=.false., debugprt=.false. character(len=20) :: name, ch_err name='psb_bjac_aply' info = 0 call psb_erractionsave(err_act) ictxt=psb_cd_get_context(desc_data) call psb_info(ictxt, me, np) diagl='U' diagu='U' select case(trans) case('N','n') case('T','t','C','c') case default call psb_errpush(40,name) goto 9999 end select n_row=desc_data%matrix_data(psb_n_row_) n_col=desc_data%matrix_data(psb_n_col_) if (n_col <= size(work)) then ww => work(1:n_col) if ((4*n_col+n_col) <= size(work)) then aux => work(n_col+1:) else allocate(aux(4*n_col),stat=info) if (info /= 0) then call psb_errpush(4010,name,a_err='Allocate') goto 9999 end if endif else allocate(ww(n_col),aux(4*n_col),stat=info) if (info /= 0) then call psb_errpush(4010,name,a_err='Allocate') goto 9999 end if endif if (prec%iprcparm(jac_sweeps_) == 1) then select case(prec%iprcparm(f_type_)) case(f_ilu_n_,f_ilu_e_) select case(trans) case('N','n') call psb_spsm(zone,prec%av(l_pr_),x,zzero,ww,desc_data,info,& & trans='N',unit=diagl,choice=psb_none_,work=aux) if(info /=0) goto 9999 ww(1:n_row) = ww(1:n_row)*prec%d(1:n_row) call psb_spsm(alpha,prec%av(u_pr_),ww,beta,y,desc_data,info,& & trans='N',unit=diagu,choice=psb_none_, work=aux) if(info /=0) goto 9999 case('T','t','C','c') call psb_spsm(zone,prec%av(u_pr_),x,zzero,ww,desc_data,info,& & trans=trans,unit=diagu,choice=psb_none_, work=aux) if(info /=0) goto 9999 ww(1:n_row) = ww(1:n_row)*prec%d(1:n_row) call psb_spsm(alpha,prec%av(l_pr_),ww,beta,y,desc_data,info,& & trans=trans,unit=diagl,choice=psb_none_,work=aux) if(info /=0) goto 9999 end select case default write(0,*) 'Unknown factorization type in bjac_aply',prec%iprcparm(f_type_) end select if (debugprt) write(0,*)' Y: ',y(:) else if (prec%iprcparm(jac_sweeps_) > 1) then ! Note: we have to add TRANS to this one !!!!!!!!! if (size(prec%av) < ap_nd_) then info = 4011 goto 9999 endif allocate(tx(n_col),ty(n_col),stat=info) if (info /= 0) then call psb_errpush(4010,name,a_err='Allocate') goto 9999 end if tx = zzero ty = zzero select case(prec%iprcparm(f_type_)) case(f_ilu_n_,f_ilu_e_) do i=1, prec%iprcparm(jac_sweeps_) ! X(k+1) = M^-1*(b-N*X(k)) ty(1:n_row) = x(1:n_row) call psb_spmm(-zone,prec%av(ap_nd_),tx,zone,ty,& & prec%desc_data,info,work=aux) if(info /=0) goto 9999 call psb_spsm(zone,prec%av(l_pr_),ty,zzero,ww,& & prec%desc_data,info,& & trans='N',unit='U',choice=psb_none_,work=aux) if(info /=0) goto 9999 ww(1:n_row) = ww(1:n_row)*prec%d(1:n_row) call psb_spsm(zone,prec%av(u_pr_),ww,zzero,tx,& & prec%desc_data,info,& & trans='N',unit='U',choice=psb_none_,work=aux) if(info /=0) goto 9999 end do end select call psb_geaxpby(alpha,tx,beta,y,desc_data,info) deallocate(tx,ty) else goto 9999 endif if (n_col <= size(work)) then if ((4*n_col+n_col) <= size(work)) then else deallocate(aux) endif else deallocate(ww,aux) endif call psb_erractionrestore(err_act) return 9999 continue call psb_errpush(info,name,i_err=int_err,a_err=ch_err) call psb_erractionrestore(err_act) if (err_act.eq.psb_act_abort_) then call psb_error() return end if return end subroutine psb_zbjac_aply