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amg4psblas/mlprec/mld_dslu_bld.f90

102 lines
3.5 KiB
Fortran

18 years ago
!!$
!!$
!!$ 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 mld_dslu_bld(a,desc_a,p,info)
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use psb_base_mod
use mld_prec_mod, mld_protect_name => mld_dslu_bld
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implicit none
type(psb_dspmat_type), intent(inout) :: a
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type(psb_desc_type), intent(in) :: desc_a
type(mld_dbaseprc_type), intent(inout) :: p
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integer, intent(out) :: info
integer :: i,j,nza,nzb,nzt,ictxt,me,np,err_act
logical, parameter :: debug=.false.
character(len=20) :: name, ch_err
if(psb_get_errstatus().ne.0) return
info=0
name='mld_dslu_bld'
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call psb_erractionsave(err_act)
ictxt = psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
if (toupper(a%fida) /= 'CSR') then
write(0,*) 'Unimplemented input to mld_slu_BLD'
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goto 9999
endif
nzt = psb_sp_get_nnzeros(a)
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if (Debug) then
write(0,*) me,'Calling mld_slu_factor ',nzt,a%m,&
& a%k,p%desc_data%matrix_data(psb_n_row_)
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call psb_barrier(ictxt)
endif
call mld_dslu_factor(a%m,nzt,&
& a%aspk,a%ia2,a%ia1,p%iprcparm(mld_slu_ptr_),info)
if (info /= 0) then
ch_err='mld_slu_fact'
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call psb_errpush(4110,name,a_err=ch_err,i_err=(/info,0,0,0,0/))
goto 9999
end if
if (Debug) then
write(0,*) me, 'SPLUBLD: Done mld_slu_Factor',info,p%iprcparm(mld_slu_ptr_)
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call psb_barrier(ictxt)
endif
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
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call psb_error()
return
end if
return
end subroutine mld_dslu_bld
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