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amg4psblas/mlprec/mld_dprecset.f90

596 lines
19 KiB
Fortran

!!$
!!$
!!$ MLD2P4
!!$ MultiLevel Domain Decomposition Parallel Preconditioners Package
!!$ based on PSBLAS (Parallel Sparse BLAS v.2.0)
!!$
!!$ (C) Copyright 2007 Alfredo Buttari University of Rome Tor Vergata
!!$ Pasqua D'Ambra ICAR-CNR, Naples
!!$ Daniela di Serafino Second University of Naples
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$
!!$ 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_dprecset.f90
!
! Subroutine: mld_dprecseti
! Version: real
!
! This routine sets the integer parameters defining the preconditioner. More
! precisely, the integer parameter identified by 'what' is assigned the value
! contained in 'val'.
! For the multilevel preconditioners, the levels are numbered in increasing
! order starting from the finest one, i.e. level 1 is the finest level.
!
! To set character and real parameters, see mld_dprecsetc and mld_dprecsetd,
! respectively.
!
!
! Arguments:
! p - type(mld_dprec_type), input/output.
! The preconditioner data structure.
! what - integer, input.
! The number identifying the parameter to be set.
! A mnemonic constant has been associated to each of these
! numbers, as reported in MLD2P4 user's guide.
! val - integer, input.
! The value of the parameter to be set. The list of allowed
! values is reported in MLD2P4 user's guide.
! info - integer, output.
! Error code.
! ilev - integer, optional, input.
! For the multilevel preconditioner, the level at which the
! preconditioner parameter has to be set.
! If nlev is not present, the parameter identified by 'what'
! is set at all the appropriate levels.
!
subroutine mld_dprecseti(p,what,val,info,ilev)
use psb_base_mod
use mld_prec_mod, mld_protect_name => mld_dprecseti
implicit none
! Arguments
type(mld_dprec_type), intent(inout) :: p
integer, intent(in) :: what
integer, intent(in) :: val
integer, intent(out) :: info
integer, optional, intent(in) :: ilev
! Local variables
integer :: ilev_, nlev_
info = 0
if (.not.allocated(p%baseprecv)) then
info = 3111
return
endif
nlev_ = size(p%baseprecv)
if (present(ilev)) then
ilev_ = ilev
else
ilev_ = 1
end if
if ((ilev_<1).or.(ilev_ > nlev_)) then
info = -1
return
endif
if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
info = 3111
return
endif
!
! Set preconditioner parameters at level ilev.
!
if (present(ilev)) then
if (ilev_ == 1) then
!
! Rules for fine level are slightly different.
!
select case(what)
case(mld_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,mld_n_ovr_,mld_sub_fill_in_,mld_smooth_sweeps_)
p%baseprecv(ilev_)%iprcparm(what) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
else if (ilev_ > 1) then
select case(what)
case(mld_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,mld_n_ovr_,mld_sub_fill_in_,&
& mld_smooth_sweeps_,mld_ml_type_,mld_aggr_alg_,mld_smooth_kind_,&
& mld_smooth_pos_,mld_aggr_eig_)
p%baseprecv(ilev_)%iprcparm(what) = val
case(mld_coarse_mat_)
if (ilev_ /= nlev_ .and. val /= mld_distr_mat_) then
write(0,*) 'Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
p%baseprecv(ilev_)%iprcparm(mld_coarse_mat_) = val
case(mld_coarse_solve_)
if (ilev_ /= nlev_) then
write(0,*) 'Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
p%baseprecv(ilev_)%iprcparm(mld_sub_solve_) = val
case(mld_coarse_sweeps_)
if (ilev_ /= nlev_) then
write(0,*) 'Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
p%baseprecv(ilev_)%iprcparm(mld_smooth_sweeps_) = val
case(mld_coarse_fill_in_)
if (ilev_ /= nlev_) then
write(0,*) 'Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
p%baseprecv(ilev_)%iprcparm(mld_sub_fill_in_) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
endif
else if (.not.present(ilev)) then
!
! ilev not specified: set preconditioner parameters at all the appropriate
! levels
!
select case(what)
case(mld_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,mld_n_ovr_,mld_sub_fill_in_,&
& mld_smooth_sweeps_,mld_ml_type_,mld_aggr_alg_,mld_smooth_kind_,&
& mld_smooth_pos_,mld_aggr_eig_)
do ilev_=1,nlev_-1
if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(ilev_)%iprcparm(what) = val
end do
case(mld_coarse_mat_)
if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(nlev_)%iprcparm(mld_coarse_mat_) = val
case(mld_coarse_solve_)
if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(nlev_)%iprcparm(mld_sub_solve_) = val
case(mld_coarse_sweeps_)
if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(nlev_)%iprcparm(mld_smooth_sweeps_) = val
case(mld_coarse_fill_in_)
if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(nlev_)%iprcparm(mld_sub_fill_in_) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
endif
end subroutine mld_dprecseti
!
! Subroutine: mld_dprecsetc
! Version: real
! Contains: get_stringval
!
! This routine sets the character parameters defining the preconditioner. More
! precisely, the character parameter identified by 'what' is assigned the value
! contained in 'val'.
! For the multilevel preconditioners, the levels are numbered in increasing
! order starting from the finest one, i.e. level 1 is the finest level.
!
! To set integer and real parameters, see mld_dprecseti and mld_dprecsetd,
! respectively.
!
!
! Arguments:
! p - type(mld_dprec_type), input/output.
! The preconditioner data structure.
! what - integer, input.
! The number identifying the parameter to be set.
! A mnemonic constant has been associated to each of these
! numbers, as reported in MLD2P4 user's guide.
! string - character(len=*), input.
! The value of the parameter to be set. The list of allowed
! values is reported in MLD2P4 user's guide.
! info - integer, output.
! Error code.
! ilev - integer, optional, input.
! For the multilevel preconditioner, the level at which the
! preconditioner parameter has to be set.
! If nlev is not present, the parameter identified by 'what'
! is set at all the appropriate levels.
!
subroutine mld_dprecsetc(p,what,string,info,ilev)
use psb_base_mod
use mld_prec_mod, mld_protect_name => mld_dprecsetc
implicit none
! Arguments
type(mld_dprec_type), intent(inout) :: p
integer, intent(in) :: what
character(len=*), intent(in) :: string
integer, intent(out) :: info
integer, optional, intent(in) :: ilev
! Local variables
integer :: ilev_, nlev_,val
info = 0
if (.not.allocated(p%baseprecv)) then
info = 3111
return
endif
nlev_ = size(p%baseprecv)
if (present(ilev)) then
ilev_ = ilev
else
ilev_ = 1
end if
if ((ilev_<1).or.(ilev_ > nlev_)) then
write(0,*) 'PRECSET ERRROR: ilev out of bounds'
info = -1
return
endif
if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
info = 3111
return
endif
!
! Set preconditioner parameters at level ilev.
!
if (present(ilev)) then
if (ilev_ == 1) then
!
! Rules for fine level are slightly different.
!
select case(what)
case(mld_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_)
call get_stringval(string,val,info)
p%baseprecv(ilev_)%iprcparm(what) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
else if (ilev_ > 1) then
select case(what)
case(mld_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,&
& mld_ml_type_,mld_aggr_alg_,mld_smooth_kind_,&
& mld_smooth_pos_,mld_aggr_eig_)
call get_stringval(string,val,info)
p%baseprecv(ilev_)%iprcparm(what) = val
case(mld_coarse_mat_)
call get_stringval(string,val,info)
if (ilev_ /= nlev_ .and. val /= mld_distr_mat_) then
write(0,*) 'Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
p%baseprecv(ilev_)%iprcparm(mld_coarse_mat_) = val
case(mld_coarse_solve_)
call get_stringval(string,val,info)
if (ilev_ /= nlev_) then
write(0,*) 'Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
p%baseprecv(ilev_)%iprcparm(mld_sub_solve_) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
endif
else if (.not.present(ilev)) then
!
! ilev not specified: set preconditioner parameters at all the appropriate
! levels
!
select case(what)
case(mld_prec_type_,mld_sub_solve_,mld_sub_restr_,mld_sub_prol_,mld_sub_ren_,&
& mld_smooth_sweeps_,mld_ml_type_,mld_aggr_alg_,mld_smooth_kind_,&
& mld_smooth_pos_)
call get_stringval(string,val,info)
do ilev_=1,nlev_-1
if (.not.allocated(p%baseprecv(ilev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(ilev_)%iprcparm(what) = val
end do
case(mld_coarse_mat_)
if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
call get_stringval(string,val,info)
p%baseprecv(nlev_)%iprcparm(mld_coarse_mat_) = val
case(mld_coarse_solve_)
if (.not.allocated(p%baseprecv(nlev_)%iprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
call get_stringval(string,val,info)
p%baseprecv(nlev_)%iprcparm(mld_sub_solve_) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
endif
contains
!
! Subroutine: get_stringval
! Note: internal subroutine of mld_dprecsetc
!
! This routine converts the string contained into string into the corresponding
! integer value.
!
! Arguments:
! string - character(len=*), input.
! The string to be converted.
! val - integer, output.
! The integer value corresponding to the string
! info - integer, output.
! Error code.
!
subroutine get_stringval(string,val,info)
! Arguments
character(len=*), intent(in) :: string
integer, intent(out) :: val, info
info = 0
select case(toupper(trim(string)))
case('NONE')
val = 0
case('HALO')
val = psb_halo_
case('SUM')
val = psb_sum_
case('AVG')
val = psb_avg_
case('ILU')
val = mld_ilu_n_
case('MILU')
val = mld_milu_n_
case('ILUT')
val = mld_ilu_t_
case('UMF')
val = mld_umf_
case('SLU')
val = mld_slu_
case('SLUDIST')
val = mld_sludist_
case('ADD')
val = mld_add_ml_
case('MULT')
val = mld_mult_ml_
case('DEC')
val = mld_dec_aggr_
case('REPL')
val = mld_repl_mat_
case('DIST')
val = mld_distr_mat_
case('SYMDEC')
val = mld_sym_dec_aggr_
case('GLB')
val = mld_glb_aggr_
case('SMOOTH')
val = mld_smooth_prol_
case('PRE')
val = mld_pre_smooth_
case('POST')
val = mld_post_smooth_
case('TWOSIDE','BOTH')
val = mld_twoside_smooth_
case default
val = -1
info = -1
end select
if (info /= 0) then
write(0,*) 'Error in get_Stringval: unknown: "',trim(string),'"'
end if
end subroutine get_stringval
end subroutine mld_dprecsetc
!
! Subroutine: mld_dprecsetd
! Version: real
!
! This routine sets the real parameters defining the preconditioner. More
! precisely, the real parameter identified by 'what' is assigned the value
! contained in 'val'.
! For the multilevel preconditioners, the levels are numbered in increasing
! order starting from the finest one, i.e. level 1 is the finest level.
!
! To set integer and character parameters, see mld_dprecseti and mld_dprecsetc,
! respectively.
!
! Arguments:
! p - type(mld_dprec_type), input/output.
! The preconditioner data structure.
! what - integer, input.
! The number identifying the parameter to be set.
! A mnemonic constant has been associated to each of these
! numbers, as reported in MLD2P4 user's guide.
! val - real(kind(1.d0)), input.
! The value of the parameter to be set. The list of allowed
! values is reported in MLD2P4 user's guide.
! info - integer, output.
! Error code.
! ilev - integer, optional, input.
! For the multilevel preconditioner, the level at which the
! preconditioner parameter has to be set.
! If nlev is not present, the parameter identified by 'what'
! is set at all the appropriate levels.
!
subroutine mld_dprecsetd(p,what,val,info,ilev)
use psb_base_mod
use mld_prec_mod, mld_protect_name => mld_dprecsetd
implicit none
! Arguments
type(mld_dprec_type), intent(inout) :: p
integer, intent(in) :: what
real(kind(1.d0)), intent(in) :: val
integer, intent(out) :: info
integer, optional, intent(in) :: ilev
! Local variables
integer :: ilev_,nlev_
info = 0
if (present(ilev)) then
ilev_ = ilev
else
ilev_ = 1
end if
if (.not.allocated(p%baseprecv)) then
info = 3111
return
endif
nlev_ = size(p%baseprecv)
if ((ilev_<1).or.(ilev_ > nlev_)) then
write(0,*) 'PRECSET ERRROR: ilev out of bounds'
info = -1
return
endif
if (.not.allocated(p%baseprecv(ilev_)%dprcparm)) then
info = 3111
return
endif
!
! Set preconditioner parameters at level ilev.
!
if (present(ilev)) then
if (ilev_ == 1) then
!
! Rules for fine level are slightly different.
!
select case(what)
case(mld_fact_thrs_)
p%baseprecv(ilev_)%dprcparm(what) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
else if (ilev_ > 1) then
select case(what)
case(mld_aggr_damp_,mld_fact_thrs_)
p%baseprecv(ilev_)%dprcparm(what) = val
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
endif
else if (.not.present(ilev)) then
!
! ilev not specified: set preconditioner parameters at all the appropriate levels
!
select case(what)
case(mld_fact_thrs_)
do ilev_=1,nlev_-1
if (.not.allocated(p%baseprecv(ilev_)%dprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(ilev_)%dprcparm(what) = val
end do
case(mld_aggr_damp_)
do ilev_=2,nlev_-1
if (.not.allocated(p%baseprecv(ilev_)%dprcparm)) then
write(0,*) 'Error: trying to call PRECSET on an uninitialized preconditioner'
info = -1
return
endif
p%baseprecv(ilev_)%dprcparm(what) = val
end do
case default
write(0,*) 'Error: trying to call PRECSET with an invalid WHAT'
info = -2
end select
endif
end subroutine mld_dprecsetd