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amg4psblas/amgprec/impl/smoother/amg_s_poly_smoother_descr.f90

109 lines
4.1 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_poly_smoother_descr(sm,info,iout,coarse,prefix)
use psb_base_mod
use amg_s_diag_solver
use amg_s_poly_smoother, amg_protect_name => amg_s_poly_smoother_descr
Implicit None
! Arguments
class(amg_s_poly_smoother_type), intent(in) :: sm
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), intent(in), optional :: iout
logical, intent(in), optional :: coarse
character(len=*), intent(in), optional :: prefix
! Local variables
integer(psb_ipk_) :: err_act
character(len=20), parameter :: name='amg_s_poly_smoother_descr'
integer(psb_ipk_) :: iout_
logical :: coarse_
character(1024) :: prefix_
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 (present(prefix)) then
prefix_ = prefix
else
prefix_ = ""
end if
write(iout_,*) trim(prefix_), ' Polynomial smoother '
select case(sm%variant)
case(amg_cheb_4_)
write(iout_,*) trim(prefix_), ' variant: ','CHEB_4'
write(iout_,*) trim(prefix_), ' Degree: ',sm%pdegree
write(iout_,*) trim(prefix_), ' rho_ba: ',sm%rho_ba
case(amg_cheb_4_opt_)
write(iout_,*) trim(prefix_), ' variant: ','CHEB_4_OPT'
write(iout_,*) trim(prefix_), ' Degree: ',sm%pdegree
write(iout_,*) trim(prefix_), ' rho_ba: ',sm%rho_ba
if (allocated(sm%poly_beta)) write(iout_,*) trim(prefix_), ' Coefficients: ',sm%poly_beta(1:sm%pdegree)
case(amg_cheb_1_opt_)
write(iout_,*) trim(prefix_), ' variant: ','CHEB_1_OPT'
write(iout_,*) trim(prefix_), ' Degree: ',sm%pdegree
write(iout_,*) trim(prefix_), ' rho_ba: ',sm%rho_ba
write(iout_,*) trim(prefix_), ' Coefficient: ',sm%cf_a
case default
write(iout_,*) trim(prefix_), ' variant: ','UNKNOWN???'
end select
if (allocated(sm%sv)) then
write(iout_,*) trim(prefix_), ' Local solver details:'
call sm%sv%descr(info,iout_,coarse=coarse,prefix=prefix)
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine amg_s_poly_smoother_descr