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238 lines
8.0 KiB
Fortran
238 lines
8.0 KiB
Fortran
!!$
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!!$
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!!$ MD2P4
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!!$ Multilevel Domain Decomposition Parallel Preconditioner Package for PSBLAS
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!!$ for
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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!!$ Daniela di Serafino Second University of Naples
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!!$ Pasqua D'Ambra ICAR-CNR
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the MD2P4 group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MD2P4 GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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!*****************************************************************************
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!* *
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!* This routine does two things: *
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!* 1. Builds the auxiliary descriptor. This is always done even for *
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!* Block Jacobi. *
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!* 2. Retrieves the remote matrix pieces. *
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!* *
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!* All of 1. is done under psb_cdovr, which is independent of CSR, and *
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!* has been placed in the TOOLS directory because it might be used for *
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!* building a descriptor for an extended stencil in a PDE solver without *
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!* necessarily applying AS precond. *
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!* *
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!* *
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!* *
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!* *
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!* *
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!*****************************************************************************
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Subroutine psb_dasmatbld(ptype,novr,a,blk,desc_data,upd,desc_p,info,outfmt)
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use psb_base_mod
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use psb_prec_mod, mld_protect_name => psb_dasmatbld
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Implicit None
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! .. Array Arguments ..
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integer, intent(in) :: ptype,novr
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Type(psb_dspmat_type), Intent(in) :: a
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Type(psb_dspmat_type), Intent(inout) :: blk
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integer, intent(out) :: info
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Type(psb_desc_type), Intent(inout) :: desc_p
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Type(psb_desc_type), Intent(in) :: desc_data
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Character, Intent(in) :: upd
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character(len=5), optional :: outfmt
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real(kind(1.d0)) :: t1,t2,t3
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integer icomm
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! .. Local Scalars ..
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Integer :: k, np,me,m,nnzero,&
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& ictxt, n_col,ier,n,int_err(5),&
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& tot_recv, ircode, n_row,nhalo, nrow_a,err_act
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Logical,Parameter :: debug=.false., debugprt=.false.
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character(len=20) :: name, ch_err
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name='psb_dasmatbld'
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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If(debug) Write(0,*)'IN DASMATBLD ', upd
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ictxt=desc_data%matrix_data(psb_ctxt_)
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Call psb_info(ictxt, me, np)
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tot_recv=0
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nrow_a = desc_data%matrix_data(psb_n_row_)
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nnzero = Size(a%aspk)
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n_col = desc_data%matrix_data(psb_n_col_)
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nhalo = n_col-nrow_a
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If (ptype == bjac_) Then
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!
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! Block Jacobi. Copy the descriptor, just in case we want to
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! do the renumbering.
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!
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If(debug) Write(0,*)' asmatbld calling allocate '
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call psb_sp_all(0,0,blk,1,info)
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if(info /= 0) then
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info=4010
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ch_err='psb_sp_all'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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blk%fida = 'COO'
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blk%infoa(psb_nnz_) = 0
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If(debug) Write(0,*)' asmatbld done spallocate'
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If (upd == 'F') Then
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call psb_cdcpy(desc_data,desc_p,info)
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If(debug) Write(0,*)' asmatbld done cdcpy'
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if(info /= 0) then
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info=4010
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ch_err='psb_cdcpy'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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endif
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Else If (ptype == asm_) Then
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!
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! Additive Schwarz variant.
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!
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!
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if (novr < 0) then
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info=3
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int_err(1)=novr
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call psb_errpush(info,name,i_err=int_err)
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goto 9999
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endif
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if ((novr == 0).or.(np==1)) then
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!
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! This is really just Block Jacobi.....
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!
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If(debug) Write(0,*)' asmatbld calling allocate novr=0'
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call psb_sp_all(0,0,blk,1,info)
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if(info /= 0) then
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info=4010
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ch_err='psb_sp_all'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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blk%fida='COO'
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blk%infoa(psb_nnz_)=0
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if (debug) write(0,*) 'Calling desccpy'
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if (upd == 'F') then
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call psb_cdcpy(desc_data,desc_p,info)
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If(debug) Write(0,*)' asmatbld done cdcpy'
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if(info /= 0) then
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info=4010
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ch_err='psb_cdcpy'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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if (debug) write(0,*) 'Early return from asmatbld: P>=3 N_OVR=0'
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endif
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return
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endif
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call psb_get_mpicomm(ictxt,icomm)
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If(debug)Write(0,*)'BEGIN dasmatbld',me,upd,novr
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t1 = psb_wtime()
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If (upd == 'F') Then
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!
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! Build the auiliary descriptor',desc_p%matrix_data(psb_n_row_)
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!
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call psb_cdbldext(a,desc_data,novr,desc_p,info,extype=psb_ovt_asov_)
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if(info /= 0) then
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info=4010
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ch_err='psb_cdbldext'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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Endif
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if(debug) write(0,*) me,' From cdbldext _:',desc_p%matrix_data(psb_n_row_),&
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& desc_p%matrix_data(psb_n_col_)
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n_row = desc_p%matrix_data(psb_n_row_)
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t2 = psb_wtime()
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if (debug) write(0,*) 'Before sphalo ',blk%fida,blk%m,psb_nnz_,blk%infoa(psb_nnz_)
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if (present(outfmt)) then
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if(debug) write(0,*) me,': Calling outfmt SPHALO with ',size(blk%ia2)
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Call psb_sphalo(a,desc_p,blk,info,outfmt=outfmt,data=psb_comm_ext_)
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else
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if(debug) write(0,*) me,': Calling SPHALO with ',size(blk%ia2)
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Call psb_sphalo(a,desc_p,blk,info,data=psb_comm_ext_)
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end if
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if(info /= 0) then
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info=4010
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ch_err='psb_sphalo'
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call psb_errpush(info,name,a_err=ch_err)
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goto 9999
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end if
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if (debug) write(0,*) 'After psb_sphalo ',blk%fida,blk%m,psb_nnz_,blk%infoa(psb_nnz_)
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t3 = psb_wtime()
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if (debugprt) then
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open(40+me)
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call psb_csprt(40+me,blk,head='% Ovrlap rows')
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close(40+me)
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endif
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End If
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.psb_act_abort_) then
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call psb_error()
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return
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end if
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Return
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End Subroutine psb_dasmatbld
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