From 3d8b4867cb80d52d6169c6c552800d4094f6db4d Mon Sep 17 00:00:00 2001 From: Salvatore Filippone Date: Wed, 17 Jan 2007 15:00:08 +0000 Subject: [PATCH] Moving files from PSBLAS2 to MLD2P4. --- psb_dbjac_aply.f90 | 270 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 270 insertions(+) create mode 100644 psb_dbjac_aply.f90 diff --git a/psb_dbjac_aply.f90 b/psb_dbjac_aply.f90 new file mode 100644 index 00000000..f77dcafd --- /dev/null +++ b/psb_dbjac_aply.f90 @@ -0,0 +1,270 @@ +!!$ +!!$ +!!$ 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 Second 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_dbjac_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_dbaseprc_type), intent(in) :: prec + real(kind(0.d0)),intent(inout) :: x(:), y(:) + real(kind(0.d0)),intent(in) :: alpha,beta + character(len=1) :: trans + real(kind(0.d0)),target :: work(:) + integer, intent(out) :: info + + ! Local variables + integer :: n_row,n_col + real(kind(1.d0)), pointer :: ww(:), aux(:), tx(:),ty(:),tb(:) + character ::diagl, diagu + integer :: ictxt,np,me,i, nrg, err_act, int_err(5) + real(kind(1.d0)) :: t1, t2, t3, t4, t5, t6, t7, mpi_wtime + logical,parameter :: debug=.false., debugprt=.false. + external mpi_wtime + 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(done,prec%av(l_pr_),x,dzero,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(done,prec%av(u_pr_),x,dzero,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(f_slu_) + + ww(1:n_row) = x(1:n_row) + + select case(trans) + case('N','n') + call psb_dslu_solve(0,n_row,1,ww,n_row,prec%iprcparm(slu_ptr_),info) + case('T','t','C','c') + call psb_dslu_solve(1,n_row,1,ww,n_row,prec%iprcparm(slu_ptr_),info) + end select + + if(info /=0) goto 9999 + call psb_geaxpby(alpha,ww,beta,y,desc_data,info) + + case (f_umf_) + + + select case(trans) + case('N','n') + call psb_dumf_solve(0,n_row,ww,x,n_row,prec%iprcparm(umf_numptr_),info) + case('T','t','C','c') + call psb_dumf_solve(1,n_row,ww,x,n_row,prec%iprcparm(umf_numptr_),info) + end select + + if(info /=0) goto 9999 + + call psb_geaxpby(alpha,ww,beta,y,desc_data,info) + + 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 = dzero + ty = dzero + 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(-done,prec%av(ap_nd_),tx,done,ty,& + & prec%desc_data,info,work=aux) + if(info /=0) goto 9999 + call psb_spsm(done,prec%av(l_pr_),ty,dzero,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(done,prec%av(u_pr_),ww,dzero,tx,& + & prec%desc_data,info,& + & trans='N',unit='U',choice=psb_none_,work=aux) + if(info /=0) goto 9999 + end do + + case(f_slu_) + 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(-done,prec%av(ap_nd_),tx,done,ty,& + & prec%desc_data,info,work=aux) + if(info /=0) goto 9999 + + call psb_dslu_solve(0,n_row,1,ty,n_row,prec%iprcparm(slu_ptr_),info) + if(info /=0) goto 9999 + tx(1:n_row) = ty(1:n_row) + end do + case(f_umf_) + 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(-done,prec%av(ap_nd_),tx,done,ty,& + & prec%desc_data,info,work=aux) + if(info /=0) goto 9999 + + call psb_dumf_solve(0,n_row,ww,ty,n_row,& + & prec%iprcparm(umf_numptr_),info) + if(info /=0) goto 9999 + tx(1:n_row) = ww(1:n_row) + 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.act_abort) then + call psb_error() + return + end if + return + +end subroutine psb_dbjac_aply +