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amg4psblas/psb_dasmatbld.f90

238 lines
8.0 KiB
Fortran

!!$
!!$
!!$ 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