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.
249 lines
9.6 KiB
Fortran
249 lines
9.6 KiB
Fortran
!
|
|
!
|
|
! MLD2P4 version 2.2
|
|
! MultiLevel Domain Decomposition Parallel Preconditioners Package
|
|
! based on PSBLAS (Parallel Sparse BLAS version 3.5)
|
|
!
|
|
! (C) Copyright 2008-2018
|
|
!
|
|
! Salvatore Filippone
|
|
! Pasqua D'Ambra
|
|
! Daniela di Serafino
|
|
!
|
|
! 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.
|
|
!
|
|
!
|
|
!
|
|
! The aggregator object hosts the aggregation method for building
|
|
! the multilevel hierarchy. The basic version is the
|
|
! decoupled aggregation algorithm presented in
|
|
!
|
|
! M. Brezina and P. Vanek, A black-box iterative solver based on a
|
|
! two-level Schwarz method, Computing, 63 (1999), 233-263.
|
|
! 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.
|
|
!
|
|
module mld_z_base_aggregator_mod
|
|
|
|
use mld_base_prec_type, only : mld_dml_parms
|
|
use psb_base_mod, only : psb_zspmat_type, psb_lzspmat_type, psb_z_vect_type, &
|
|
& psb_z_base_vect_type, psb_zlinmap_type, psb_dpk_, &
|
|
& psb_ipk_, psb_epk_, psb_lpk_, psb_desc_type, psb_i_base_vect_type, &
|
|
& psb_erractionsave, psb_error_handler, psb_success_
|
|
!
|
|
! sm - class(mld_T_base_smoother_type), allocatable
|
|
! The current level preconditioner (aka smoother).
|
|
! parms - type(mld_RTml_parms)
|
|
! The parameters defining the multilevel strategy.
|
|
! ac - The local part of the current-level matrix, built by
|
|
! coarsening the previous-level matrix.
|
|
! desc_ac - type(psb_desc_type).
|
|
! The communication descriptor associated to the matrix
|
|
! stored in ac.
|
|
! base_a - type(psb_Tspmat_type), pointer.
|
|
! Pointer (really a pointer!) to the local part of the current
|
|
! matrix (so we have a unified treatment of residuals).
|
|
! We need this to avoid passing explicitly the current matrix
|
|
! to the routine which applies the preconditioner.
|
|
! base_desc - type(psb_desc_type), pointer.
|
|
! Pointer to the communication descriptor associated to the
|
|
! matrix pointed by base_a.
|
|
! map - Stores the maps (restriction and prolongation) between the
|
|
! vector spaces associated to the index spaces of the previous
|
|
! and current levels.
|
|
!
|
|
! Methods:
|
|
! Most methods follow the encapsulation hierarchy: they take whatever action
|
|
! is appropriate for the current object, then call the corresponding method for
|
|
! the contained object.
|
|
! As an example: the descr() method prints out a description of the
|
|
! level. It starts by invoking the descr() method of the parms object,
|
|
! then calls the descr() method of the smoother object.
|
|
!
|
|
! descr - Prints a description of the object.
|
|
! default - Set default values
|
|
! dump - Dump to file object contents
|
|
! set - Sets various parameters; when a request is unknown
|
|
! it is passed to the smoother object for further processing.
|
|
! check - Sanity checks.
|
|
! sizeof - Total memory occupation in bytes
|
|
! get_nzeros - Number of nonzeros
|
|
!
|
|
!
|
|
type mld_z_base_aggregator_type
|
|
|
|
contains
|
|
procedure, pass(ag) :: bld_tprol => mld_z_base_aggregator_build_tprol
|
|
procedure, pass(ag) :: mat_asb => mld_z_base_aggregator_mat_asb
|
|
procedure, pass(ag) :: update_next => mld_z_base_aggregator_update_next
|
|
procedure, pass(ag) :: clone => mld_z_base_aggregator_clone
|
|
procedure, pass(ag) :: free => mld_z_base_aggregator_free
|
|
procedure, pass(ag) :: default => mld_z_base_aggregator_default
|
|
procedure, pass(ag) :: descr => mld_z_base_aggregator_descr
|
|
procedure, pass(ag) :: set_aggr_type => mld_z_base_aggregator_set_aggr_type
|
|
procedure, nopass :: fmt => mld_z_base_aggregator_fmt
|
|
end type mld_z_base_aggregator_type
|
|
|
|
|
|
contains
|
|
|
|
subroutine mld_z_base_aggregator_update_next(ag,agnext,info)
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), target, intent(inout) :: ag, agnext
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
!
|
|
! Base version does nothing.
|
|
!
|
|
info = 0
|
|
end subroutine mld_z_base_aggregator_update_next
|
|
|
|
subroutine mld_z_base_aggregator_clone(ag,agnext,info)
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), intent(inout) :: ag
|
|
class(mld_z_base_aggregator_type), allocatable, intent(inout) :: agnext
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = 0
|
|
if (allocated(agnext)) then
|
|
call agnext%free(info)
|
|
if (info == 0) deallocate(agnext,stat=info)
|
|
end if
|
|
if (info /= 0) return
|
|
allocate(agnext,source=ag,stat=info)
|
|
|
|
end subroutine mld_z_base_aggregator_clone
|
|
|
|
subroutine mld_z_base_aggregator_free(ag,info)
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), intent(inout) :: ag
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
info = psb_success_
|
|
return
|
|
end subroutine mld_z_base_aggregator_free
|
|
|
|
subroutine mld_z_base_aggregator_default(ag)
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), intent(inout) :: ag
|
|
|
|
! Here we need do nothing
|
|
|
|
return
|
|
end subroutine mld_z_base_aggregator_default
|
|
|
|
function mld_z_base_aggregator_fmt() result(val)
|
|
implicit none
|
|
character(len=32) :: val
|
|
|
|
val = "Null "
|
|
end function mld_z_base_aggregator_fmt
|
|
|
|
subroutine mld_z_base_aggregator_descr(ag,parms,iout,info)
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), intent(in) :: ag
|
|
type(mld_dml_parms), intent(in) :: parms
|
|
integer(psb_ipk_), intent(in) :: iout
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
call parms%mldescr(iout,info)
|
|
|
|
return
|
|
end subroutine mld_z_base_aggregator_descr
|
|
|
|
subroutine mld_z_base_aggregator_set_aggr_type(ag,parms,info)
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), intent(inout) :: ag
|
|
type(mld_dml_parms), intent(in) :: parms
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
! Do nothing
|
|
|
|
return
|
|
end subroutine mld_z_base_aggregator_set_aggr_type
|
|
|
|
subroutine mld_z_base_aggregator_build_tprol(ag,parms,a,desc_a,ilaggr,nlaggr,op_prol,info)
|
|
use psb_base_mod
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), target, intent(inout) :: ag
|
|
type(mld_dml_parms), intent(inout) :: parms
|
|
type(psb_zspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_lpk_), allocatable, intent(out) :: ilaggr(:),nlaggr(:)
|
|
type(psb_lzspmat_type), intent(out) :: op_prol
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
integer(psb_ipk_) :: err_act
|
|
character(len=20) :: name='z_base_aggregator_build_tprol'
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_err_missing_override_method_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
|
|
return
|
|
|
|
end subroutine mld_z_base_aggregator_build_tprol
|
|
|
|
|
|
subroutine mld_z_base_aggregator_mat_asb(ag,parms,a,desc_a,ilaggr,nlaggr,ac,&
|
|
& op_prol,op_restr,info)
|
|
use psb_base_mod
|
|
implicit none
|
|
class(mld_z_base_aggregator_type), target, intent(inout) :: ag
|
|
type(mld_dml_parms), intent(inout) :: parms
|
|
type(psb_zspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_lpk_), intent(inout) :: ilaggr(:), nlaggr(:)
|
|
type(psb_lzspmat_type), intent(inout) :: op_prol
|
|
type(psb_lzspmat_type), intent(out) :: ac,op_restr
|
|
integer(psb_ipk_), intent(out) :: info
|
|
integer(psb_ipk_) :: err_act
|
|
character(len=20) :: name='z_base_aggregator_mat_asb'
|
|
|
|
call psb_erractionsave(err_act)
|
|
|
|
info = psb_err_missing_override_method_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(err_act)
|
|
|
|
return
|
|
end subroutine mld_z_base_aggregator_mat_asb
|
|
|
|
|
|
end module mld_z_base_aggregator_mod
|