!!$ !!$ !!$ 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. !!$ !!$ !***************************************************************************** !* * !* This routine does two things: * !* 1. Builds the auxiliary descriptor. This is always done even for * !* Block Jacobi. * !* 2. Retrieves the remote matrix pieces. * !* * !* All of 1. is done under psb_cdovr, which is independent of CSR, and * !* has been placed in the TOOLS directory because it might be used for * !* building a descriptor for an extended stencil in a PDE solver without * !* necessarily applying AS precond. * !* * !* * !* * !* * !* * !***************************************************************************** Subroutine psb_dasmatbld(ptype,novr,a,blk,desc_data,upd,desc_p,info,outfmt) use psb_base_mod use psb_prec_mod, mld_protect_name => psb_dasmatbld Implicit None ! .. Array Arguments .. integer, intent(in) :: ptype,novr Type(psb_dspmat_type), Intent(in) :: a Type(psb_dspmat_type), Intent(inout) :: blk integer, intent(out) :: info Type(psb_desc_type), Intent(inout) :: desc_p Type(psb_desc_type), Intent(in) :: desc_data Character, Intent(in) :: upd character(len=5), optional :: outfmt real(kind(1.d0)) :: t1,t2,t3 integer icomm ! .. Local Scalars .. Integer :: k, np,me,m,nnzero,& & ictxt, n_col,ier,n,int_err(5),& & tot_recv, ircode, n_row,nhalo, nrow_a,err_act Logical,Parameter :: debug=.false., debugprt=.false. character(len=20) :: name, ch_err name='psb_dasmatbld' if(psb_get_errstatus().ne.0) return info=0 call psb_erractionsave(err_act) If(debug) Write(0,*)'IN DASMATBLD ', upd ictxt=desc_data%matrix_data(psb_ctxt_) Call psb_info(ictxt, me, np) tot_recv=0 nrow_a = desc_data%matrix_data(psb_n_row_) nnzero = Size(a%aspk) n_col = desc_data%matrix_data(psb_n_col_) nhalo = n_col-nrow_a If (ptype == bjac_) Then ! ! Block Jacobi. Copy the descriptor, just in case we want to ! do the renumbering. ! If(debug) Write(0,*)' asmatbld calling allocate ' call psb_sp_all(0,0,blk,1,info) if(info /= 0) then info=4010 ch_err='psb_sp_all' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if blk%fida = 'COO' blk%infoa(psb_nnz_) = 0 If(debug) Write(0,*)' asmatbld done spallocate' If (upd == 'F') Then call psb_cdcpy(desc_data,desc_p,info) If(debug) Write(0,*)' asmatbld done cdcpy' if(info /= 0) then info=4010 ch_err='psb_cdcpy' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if endif Else If (ptype == asm_) Then ! ! Additive Schwarz variant. ! ! if (novr < 0) then info=3 int_err(1)=novr call psb_errpush(info,name,i_err=int_err) goto 9999 endif if ((novr == 0).or.(np==1)) then ! ! This is really just Block Jacobi..... ! If(debug) Write(0,*)' asmatbld calling allocate novr=0' call psb_sp_all(0,0,blk,1,info) if(info /= 0) then info=4010 ch_err='psb_sp_all' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if blk%fida='COO' blk%infoa(psb_nnz_)=0 if (debug) write(0,*) 'Calling desccpy' if (upd == 'F') then call psb_cdcpy(desc_data,desc_p,info) If(debug) Write(0,*)' asmatbld done cdcpy' if(info /= 0) then info=4010 ch_err='psb_cdcpy' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug) write(0,*) 'Early return from asmatbld: P>=3 N_OVR=0' endif return endif call psb_get_mpicomm(ictxt,icomm) If(debug)Write(0,*)'BEGIN dasmatbld',me,upd,novr t1 = psb_wtime() If (upd == 'F') Then ! ! Build the auiliary descriptor',desc_p%matrix_data(psb_n_row_) ! call psb_cdbldext(a,desc_data,novr,desc_p,info,extype=psb_ovt_asov_) if(info /= 0) then info=4010 ch_err='psb_cdbldext' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if Endif if(debug) write(0,*) me,' From cdbldext _:',desc_p%matrix_data(psb_n_row_),& & desc_p%matrix_data(psb_n_col_) n_row = desc_p%matrix_data(psb_n_row_) t2 = psb_wtime() if (debug) write(0,*) 'Before sphalo ',blk%fida,blk%m,psb_nnz_,blk%infoa(psb_nnz_) if (present(outfmt)) then if(debug) write(0,*) me,': Calling outfmt SPHALO with ',size(blk%ia2) Call psb_sphalo(a,desc_p,blk,info,outfmt=outfmt,data=psb_comm_ext_) else if(debug) write(0,*) me,': Calling SPHALO with ',size(blk%ia2) Call psb_sphalo(a,desc_p,blk,info,data=psb_comm_ext_) end if if(info /= 0) then info=4010 ch_err='psb_sphalo' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (debug) write(0,*) 'After psb_sphalo ',blk%fida,blk%m,psb_nnz_,blk%infoa(psb_nnz_) t3 = psb_wtime() if (debugprt) then open(40+me) call psb_csprt(40+me,blk,head='% Ovrlap rows') close(40+me) endif End If call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act.eq.psb_act_abort_) then call psb_error() return end if Return End Subroutine psb_dasmatbld