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.
115 lines
4.5 KiB
Fortran
115 lines
4.5 KiB
Fortran
!
|
|
!
|
|
! AMG4PSBLAS version 1.0
|
|
! Algebraic Multigrid Package
|
|
! based on PSBLAS (Parallel Sparse BLAS version 3.7)
|
|
!
|
|
! (C) Copyright 2021
|
|
!
|
|
! Salvatore Filippone
|
|
! Pasqua D'Ambra
|
|
! Fabio Durastante
|
|
!
|
|
! 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 AMG4PSBLAS 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 AMG4PSBLAS 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.
|
|
!
|
|
!
|
|
!
|
|
!
|
|
! Locally symmetrized (decoupled) aggregation algorithm.
|
|
! This version differs from the basic decoupled aggregation algorithm
|
|
! only because it works on (the pattern of) A+A^T instead of A.
|
|
!
|
|
!
|
|
module amg_c_symdec_aggregator_mod
|
|
|
|
use amg_c_dec_aggregator_mod
|
|
!> \namespace amg_c_symdec_aggregator_mod \class amg_c_symdec_aggregator_type
|
|
!! \extends amg_c_dec_aggregator_mod::amg_c_dec_aggregator_type
|
|
!!
|
|
!! This version differs from the basic decoupled aggregation algorithm
|
|
!! only because it works on (the pattern of) A+A^T instead of A.
|
|
!!
|
|
!
|
|
type, extends(amg_c_dec_aggregator_type) :: amg_c_symdec_aggregator_type
|
|
|
|
contains
|
|
procedure, pass(ag) :: bld_tprol => amg_c_symdec_aggregator_build_tprol
|
|
procedure, pass(ag) :: descr => amg_c_symdec_aggregator_descr
|
|
procedure, nopass :: fmt => amg_c_symdec_aggregator_fmt
|
|
end type amg_c_symdec_aggregator_type
|
|
|
|
|
|
interface
|
|
subroutine amg_c_symdec_aggregator_build_tprol(ag,parms,ag_data,&
|
|
& a,desc_a,ilaggr,nlaggr,t_prol,info)
|
|
import :: amg_c_symdec_aggregator_type, psb_desc_type, psb_cspmat_type, psb_spk_, &
|
|
& psb_ipk_, psb_lpk_, psb_lcspmat_type, amg_sml_parms, amg_saggr_data
|
|
implicit none
|
|
class(amg_c_symdec_aggregator_type), target, intent(inout) :: ag
|
|
type(amg_sml_parms), intent(inout) :: parms
|
|
type(amg_saggr_data), intent(in) :: ag_data
|
|
type(psb_cspmat_type), intent(inout) :: a
|
|
type(psb_desc_type), intent(inout) :: desc_a
|
|
integer(psb_lpk_), allocatable, intent(out) :: ilaggr(:),nlaggr(:)
|
|
type(psb_lcspmat_type), intent(out) :: t_prol
|
|
integer(psb_ipk_), intent(out) :: info
|
|
end subroutine amg_c_symdec_aggregator_build_tprol
|
|
end interface
|
|
|
|
|
|
contains
|
|
|
|
function amg_c_symdec_aggregator_fmt() result(val)
|
|
implicit none
|
|
character(len=32) :: val
|
|
|
|
val = "Symmetric Decoupled aggregation"
|
|
end function amg_c_symdec_aggregator_fmt
|
|
|
|
subroutine amg_c_symdec_aggregator_descr(ag,parms,iout,info,prefix)
|
|
implicit none
|
|
class(amg_c_symdec_aggregator_type), intent(in) :: ag
|
|
type(amg_sml_parms), intent(in) :: parms
|
|
integer(psb_ipk_), intent(in) :: iout
|
|
integer(psb_ipk_), intent(out) :: info
|
|
character(len=*), intent(in), optional :: prefix
|
|
|
|
character(1024) :: prefix_
|
|
|
|
if (present(prefix)) then
|
|
prefix_ = prefix
|
|
else
|
|
prefix_ = ""
|
|
end if
|
|
|
|
write(iout,*) trim(prefix_),' ','Decoupled Aggregator locally-symmetrized'
|
|
write(iout,*) trim(prefix_),' ','Aggregator object type: ',ag%fmt()
|
|
call parms%mldescr(iout,info,prefix=prefix)
|
|
|
|
return
|
|
end subroutine amg_c_symdec_aggregator_descr
|
|
|
|
end module amg_c_symdec_aggregator_mod
|