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amg4psblas/amgprec/impl/smoother/amg_s_jac_smoother_descr.f90

104 lines
3.6 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.
!
!
subroutine amg_s_jac_smoother_descr(sm,info,iout,coarse)
use psb_base_mod
use amg_s_diag_solver
use amg_s_jac_smoother, amg_protect_name => amg_s_jac_smoother_descr
use amg_s_diag_solver
use amg_s_gs_solver
Implicit None
! Arguments
class(amg_s_jac_smoother_type), intent(in) :: sm
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iout
logical, intent(in), optional :: coarse
! Local variables
integer(psb_ipk_) :: err_act
character(len=20), parameter :: name='amg_s_jac_smoother_descr'
integer(psb_ipk_) :: iout_
logical :: coarse_
call psb_erractionsave(err_act)
info = psb_success_
if (present(coarse)) then
coarse_ = coarse
else
coarse_ = .false.
end if
if (present(iout)) then
iout_ = iout
else
iout_ = psb_out_unit
endif
if (.not.coarse_) then
if (allocated(sm%sv)) then
select type(smv=>sm%sv)
class is (amg_s_diag_solver_type)
write(iout_,*) ' Point Jacobi '
write(iout_,*) ' Local diagonal:'
call smv%descr(info,iout_,coarse=coarse)
class is (amg_s_bwgs_solver_type)
write(iout_,*) ' Hybrid Backward Gauss-Seidel '
class is (amg_s_gs_solver_type)
write(iout_,*) ' Hybrid Forward Gauss-Seidel '
class default
write(iout_,*) ' Block Jacobi '
write(iout_,*) ' Local solver details:'
call smv%descr(info,iout_,coarse=coarse)
end select
else
write(iout_,*) ' Block Jacobi '
end if
else
if (allocated(sm%sv)) then
call sm%sv%descr(info,iout_,coarse=coarse)
end if
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine amg_s_jac_smoother_descr