You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
160 lines
6.1 KiB
Fortran
160 lines
6.1 KiB
Fortran
!!$
|
|
!!$
|
|
!!$ MLD2P4 version 2.0
|
|
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
!!$ based on PSBLAS (Parallel Sparse BLAS version 3.3)
|
|
!!$
|
|
!!$ (C) Copyright 2008, 2010, 2012, 2015
|
|
!!$
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$ Pasqua D'Ambra ICAR-CNR, Naples
|
|
!!$ Daniela di Serafino Second University of Naples
|
|
!!$
|
|
!!$ 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 MLD2P4 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 MLD2P4 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.
|
|
!!$
|
|
!!$
|
|
! File: mld_caggrmat_nosmth_asb.F90
|
|
!
|
|
! Subroutine: mld_caggrmat_nosmth_asb
|
|
! Version: complex
|
|
!
|
|
! This routine builds a coarse-level matrix A_C from a fine-level matrix A
|
|
! by using the Galerkin approach, i.e.
|
|
!
|
|
! A_C = P_C^T A P_C,
|
|
!
|
|
! where P_C is the piecewise constant interpolation operator corresponding
|
|
! the fine-to-coarse level mapping built by mld_aggrmap_bld.
|
|
!
|
|
! The coarse-level matrix A_C is distributed among the parallel processes or
|
|
! replicated on each of them, according to the value of p%parms%coarse_mat
|
|
! specified by the user through mld_cprecinit and mld_zprecset.
|
|
!
|
|
! For details see
|
|
! P. D'Ambra, D. di Serafino and S. Filippone, On the development of
|
|
! PSBLAS-based parallel two-level Schwarz preconditioners, Appl. Num. Math.,
|
|
! 57 (2007), 1181-1196.
|
|
!
|
|
!
|
|
!
|
|
! Arguments:
|
|
! a - type(psb_cspmat_type), input.
|
|
! The sparse matrix structure containing the local part of
|
|
! the fine-level matrix.
|
|
! desc_a - type(psb_desc_type), input.
|
|
! The communication descriptor of the fine-level matrix.
|
|
! p - type(mld_c_onelev_type), input/output.
|
|
! The 'one-level' data structure that will contain the local
|
|
! part of the matrix to be built as well as the information
|
|
! concerning the prolongator and its transpose.
|
|
! ilaggr - integer, dimension(:), allocatable.
|
|
! The mapping between the row indices of the coarse-level
|
|
! matrix and the row indices of the fine-level matrix.
|
|
! ilaggr(i)=j means that node i in the adjacency graph
|
|
! of the fine-level matrix is mapped onto node j in the
|
|
! adjacency graph of the coarse-level matrix.
|
|
! nlaggr - integer, dimension(:), allocatable.
|
|
! nlaggr(i) contains the aggregates held by process i.
|
|
! info - integer, output.
|
|
! Error code.
|
|
!
|
|
subroutine mld_caggrmat_nosmth_asb(a,desc_a,ilaggr,nlaggr,parms,ac,op_prol,op_restr,info)
|
|
use psb_base_mod
|
|
use mld_c_inner_mod, mld_protect_name => mld_caggrmat_nosmth_asb
|
|
|
|
implicit none
|
|
|
|
! Arguments
|
|
type(psb_cspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_ipk_), intent(inout) :: ilaggr(:), nlaggr(:)
|
|
type(mld_sml_parms), intent(inout) :: parms
|
|
type(psb_cspmat_type), intent(inout) :: op_prol
|
|
type(psb_cspmat_type), intent(out) :: ac,op_restr
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
! Local variables
|
|
integer(psb_ipk_) :: err_act
|
|
integer(psb_ipk_) :: ictxt,np,me, icomm, ndx, minfo
|
|
character(len=20) :: name
|
|
integer(psb_ipk_) :: ierr(5)
|
|
type(psb_c_coo_sparse_mat) :: ac_coo, acoo
|
|
type(psb_c_csr_sparse_mat) :: acsr1, acsr2
|
|
integer(psb_ipk_) :: debug_level, debug_unit
|
|
integer(psb_ipk_) :: nrow, nglob, ncol, ntaggr, nzl, ip, &
|
|
& naggr, nzt, naggrm1, i, k
|
|
|
|
name='mld_aggrmat_nosmth_asb'
|
|
if(psb_get_errstatus().ne.0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
|
|
ictxt = desc_a%get_context()
|
|
icomm = desc_a%get_mpic()
|
|
call psb_info(ictxt, me, np)
|
|
nglob = desc_a%get_global_rows()
|
|
nrow = desc_a%get_local_rows()
|
|
ncol = desc_a%get_local_cols()
|
|
|
|
|
|
naggr = nlaggr(me+1)
|
|
ntaggr = sum(nlaggr)
|
|
naggrm1=sum(nlaggr(1:me))
|
|
|
|
call acoo%allocate(ncol,ntaggr,ncol)
|
|
|
|
call op_prol%cscnv(info,type='csr',dupl=psb_dupl_add_)
|
|
if (info /= psb_success_) goto 9999
|
|
call op_prol%transp(op_restr)
|
|
|
|
call a%cp_to(ac_coo)
|
|
|
|
nzt = ac_coo%get_nzeros()
|
|
k = 0
|
|
do i=1, nzt
|
|
k = k + 1
|
|
ac_coo%ia(k) = ilaggr(ac_coo%ia(i))
|
|
ac_coo%ja(k) = ilaggr(ac_coo%ja(i))
|
|
ac_coo%val(k) = ac_coo%val(i)
|
|
enddo
|
|
call ac_coo%set_nrows(naggr)
|
|
call ac_coo%set_ncols(naggr)
|
|
call ac_coo%set_nzeros(k)
|
|
call ac_coo%set_dupl(psb_dupl_add_)
|
|
call ac_coo%fix(info)
|
|
call ac%mv_from(ac_coo)
|
|
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
|
|
return
|
|
|
|
end subroutine mld_caggrmat_nosmth_asb
|