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.
amg4psblas/mlprec/impl/mld_zcprecset.F90

699 lines
26 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.
!
!
! File: mld_zprecset.f90
!
! Subroutine: mld_zprecseti
! Version: complex
!
! 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 complex parameters, see mld_zprecsetc and mld_zprecsetr,
! respectively.
!
!
! Arguments:
! p - type(mld_zprec_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 the MLD2P4 User's and Reference Guide.
! val - integer, input.
! The value of the parameter to be set. The list of allowed
! values is reported in the MLD2P4 User's and Reference 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.
!
! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to
! MLD2P4 developers. Indeed, by using ilev it is possible to set different values
! of the same parameter at different levels 1,...,nlev-1, even in cases where
! the parameter must have the same value at all the levels but the coarsest one.
! For this reason, the interface mld_precset to this routine has been built in
! such a way that ilev is not visible to the user (see mld_prec_mod.f90).
!
subroutine mld_zcprecseti(p,what,val,info,ilev,ilmax,pos,idx)
use psb_base_mod
use mld_z_prec_mod, mld_protect_name => mld_zcprecseti
use mld_z_jac_smoother
use mld_z_as_smoother
use mld_z_diag_solver
use mld_z_ilu_solver
use mld_z_id_solver
use mld_z_gs_solver
#if defined(HAVE_UMF_)
use mld_z_umf_solver
#endif
#if defined(HAVE_SLUDIST_)
use mld_z_sludist_solver
#endif
#if defined(HAVE_SLU_)
use mld_z_slu_solver
#endif
#if defined(HAVE_MUMPS_)
use mld_z_mumps_solver
#endif
implicit none
! Arguments
class(mld_zprec_type), intent(inout) :: p
character(len=*), intent(in) :: what
integer(psb_ipk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), optional, intent(in) :: ilev,ilmax
character(len=*), optional, intent(in) :: pos
integer(psb_ipk_), intent(in), optional :: idx
! Local variables
integer(psb_ipk_) :: ilev_, nlev_, ilmax_, il
character(len=*), parameter :: name='mld_precseti'
info = psb_success_
if (.not.allocated(p%precv)) then
info = 3111
write(psb_err_unit,*) name,&
& ': Error: uninitialized preconditioner,',&
&' should call MLD_PRECINIT'
return
endif
nlev_ = size(p%precv)
if (present(ilev)) then
ilev_ = ilev
if (present(ilmax)) then
ilmax_ = ilmax
else
ilmax_ = ilev_
end if
else
ilev_ = 1
ilmax_ = ilev_
end if
if ((ilev_<1).or.(ilev_ > nlev_)) then
info = -1
write(psb_err_unit,*) name,&
&': Error: invalid ILEV/NLEV combination',ilev_, nlev_
return
endif
if ((ilmax_<1).or.(ilmax_ > nlev_)) then
info = -1
write(psb_err_unit,*) name,&
&': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_
return
endif
select case(psb_toupper(what))
case ('MIN_COARSE_SIZE')
p%min_coarse_size = max(val,-1)
return
case('MAX_LEVS')
p%max_levs = max(val,1)
return
case ('OUTER_SWEEPS')
p%outer_sweeps = max(val,1)
return
end select
!
! Set preconditioner parameters at level ilev.
!
if (present(ilev)) then
select case(psb_toupper(what))
case('SMOOTHER_TYPE','SUB_SOLVE','SMOOTHER_SWEEPS',&
& 'ML_CYCLE','PAR_AGGR_ALG','AGGR_ORD',&
& 'AGGR_TYPE','AGGR_PROL','AGGR_OMEGA_ALG',&
& 'AGGR_EIG','SUB_RESTR','SUB_PROL', &
& 'SUB_OVR','SUB_FILLIN',&
& 'COARSE_MAT')
do il=ilev_, ilmax_
call p%precv(il)%set(what,val,info,pos=pos)
end do
case('COARSE_SUBSOLVE')
if (ilev_ /= nlev_) then
write(psb_err_unit,*) name,&
& ': Error: Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
call p%precv(ilev_)%set('SUB_SOLVE',val,info,pos=pos)
case('COARSE_SOLVE')
if (ilev_ /= nlev_) then
write(psb_err_unit,*) name,&
& ': Error: Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
if (nlev_ > 1) then
call p%precv(nlev_)%set('COARSE_SOLVE',val,info,pos=pos)
select case (val)
case(mld_bjac_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
#if defined(HAVE_UMF_)
call p%precv(nlev_)%set('SUB_SOLVE',mld_umf_,info,pos=pos)
#elif defined(HAVE_SLU_)
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
#else
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
#endif
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info)
case(mld_slu_)
#if defined(HAVE_SLU_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_ilu_n_, mld_ilu_t_,mld_milu_n_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
case(mld_mumps_)
#if defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_umf_)
#if defined(HAVE_UMF_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_SLU_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_sludist_)
#if defined(HAVE_SLUDIST_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#elif defined(HAVE_UMF_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_umf_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_SLU_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_jac_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_diag_scale_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
end select
endif
case('COARSE_SWEEPS')
if (ilev_ /= nlev_) then
write(psb_err_unit,*) name,&
& ': Error: Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
call p%precv(nlev_)%set('SMOOTHER_SWEEPS',val,info,pos=pos)
case('COARSE_FILLIN')
if (ilev_ /= nlev_) then
write(psb_err_unit,*) name,&
& ': Error: Inconsistent specification of WHAT vs. ILEV'
info = -2
return
end if
call p%precv(nlev_)%set('SUB_FILLIN',val,info,pos=pos)
case default
do il=ilev_, ilmax_
call p%precv(il)%set(what,val,info,pos=pos,idx=idx)
end do
end select
else if (.not.present(ilev)) then
!
! ilev not specified: set preconditioner parameters at all the appropriate
! levels
!
select case(psb_toupper(trim(what)))
case('SUB_SOLVE','SUB_RESTR','SUB_PROL',&
& 'SUB_OVR','SUB_FILLIN',&
& 'SMOOTHER_SWEEPS','SMOOTHER_TYPE')
do ilev_=1,max(1,nlev_-1)
call p%precv(ilev_)%set(what,val,info,pos=pos)
if (info /= 0) return
end do
case('ML_CYCLE','PAR_AGGR_ALG','AGGR_ORD','AGGR_PROL','AGGR_TYPE',&
& 'AGGR_OMEGA_ALG','AGGR_EIG','AGGR_FILTER')
do ilev_=1,nlev_
call p%precv(ilev_)%set(what,val,info,pos=pos)
if (info /= 0) return
end do
case('COARSE_MAT')
if (nlev_ > 1) then
call p%precv(nlev_)%set('COARSE_MAT',val,info,pos=pos)
end if
case('COARSE_SOLVE')
if (nlev_ > 1) then
call p%precv(nlev_)%set('COARSE_SOLVE',val,info,pos=pos)
select case (val)
case(mld_bjac_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
#if defined(HAVE_UMF_)
call p%precv(nlev_)%set('SUB_SOLVE',mld_umf_,info,pos=pos)
#elif defined(HAVE_SLU_)
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
#else
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
#endif
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info)
case(mld_slu_)
#if defined(HAVE_SLU_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_ilu_n_, mld_ilu_t_,mld_milu_n_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
case(mld_mumps_)
#if defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_umf_)
#if defined(HAVE_UMF_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_SLU_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_sludist_)
#if defined(HAVE_SLUDIST_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#elif defined(HAVE_UMF_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_umf_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_SLU_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_slu_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_repl_mat_,info,pos=pos)
#elif defined(HAVE_MUMPS_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_mumps_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#else
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_ilu_n_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
#endif
case(mld_jac_)
call p%precv(nlev_)%set('SMOOTHER_TYPE',mld_bjac_,info,pos=pos)
call p%precv(nlev_)%set('SUB_SOLVE',mld_diag_scale_,info,pos=pos)
call p%precv(nlev_)%set('COARSE_MAT',mld_distr_mat_,info,pos=pos)
end select
endif
case('COARSE_SUBSOLVE')
if (nlev_ > 1) then
call p%precv(nlev_)%set('SUB_SOLVE',val,info,pos=pos)
endif
case('COARSE_SWEEPS')
if (nlev_ > 1) then
call p%precv(nlev_)%set('SMOOTHER_SWEEPS',val,info,pos=pos)
end if
case('COARSE_FILLIN')
if (nlev_ > 1) then
call p%precv(nlev_)%set('SUB_FILLIN',val,info,pos=pos)
end if
case default
do ilev_=1,nlev_
call p%precv(ilev_)%set(what,val,info,pos=pos,idx=idx)
end do
end select
endif
end subroutine mld_zcprecseti
!
! Subroutine: mld_zprecsetc
! Version: complex
!
! 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 complex parameters, see mld_zprecseti and mld_zprecsetr,
! respectively.
!
!
! Arguments:
! p - type(mld_zprec_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 the MLD2P4 User's and Reference Guide.
! string - character(len=*), input.
! The value of the parameter to be set. The list of allowed
! values is reported in the MLD2P4 User's and Reference 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.
!
! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to
! MLD2P4 developers. Indeed, by using ilev it is possible to set different values
! of the same parameter at different levels 1,...,nlev-1, even in cases where
! the parameter must have the same value at all the levels but the coarsest one.
! For this reason, the interface mld_precset to this routine has been built in
! such a way that ilev is not visible to the user (see mld_prec_mod.f90).
!
subroutine mld_zcprecsetc(p,what,string,info,ilev,ilmax,pos,idx)
use psb_base_mod
use mld_z_prec_mod, mld_protect_name => mld_zcprecsetc
implicit none
! Arguments
class(mld_zprec_type), intent(inout) :: p
character(len=*), intent(in) :: what
character(len=*), intent(in) :: string
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), optional, intent(in) :: ilev,ilmax
character(len=*), optional, intent(in) :: pos
integer(psb_ipk_), intent(in), optional :: idx
! Local variables
integer(psb_ipk_) :: ilev_, nlev_,val,ilmax_, il
character(len=*), parameter :: name='mld_precsetc'
info = psb_success_
if (.not.allocated(p%precv)) then
info = 3111
return
endif
val = mld_stringval(string)
if (val >=0) then
call p%set(what,val,info,ilev=ilev,ilmax=ilmax,pos=pos,idx=idx)
else
nlev_ = size(p%precv)
if (present(ilev)) then
ilev_ = ilev
if (present(ilmax)) then
ilmax_ = ilmax
else
ilmax_ = ilev_
end if
else
ilev_ = 1
ilmax_ = ilev_
end if
if ((ilev_<1).or.(ilev_ > nlev_)) then
info = -1
write(psb_err_unit,*) name,&
&': Error: invalid ILEV/NLEV combination',ilev_, nlev_
return
endif
if ((ilmax_<1).or.(ilmax_ > nlev_)) then
info = -1
write(psb_err_unit,*) name,&
&': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_
return
endif
do il=ilev_, ilmax_
call p%precv(il)%set(what,string,info,pos=pos,idx=idx)
end do
end if
end subroutine mld_zcprecsetc
!
! Subroutine: mld_zprecsetr
! Version: complex
!
! This routine sets the complex parameters defining the preconditioner. More
! precisely, the complex 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_zprecseti and mld_zprecsetc,
! respectively.
!
! Arguments:
! p - type(mld_zprec_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 the MLD2P4 User's and Reference Guide.
! val - real(psb_dpk_), input.
! The value of the parameter to be set. The list of allowed
! values is reported in the MLD2P4 User's and Reference 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.
!
! NOTE: currently, the use of the argument ilev is not "safe" and is reserved to
! MLD2P4 developers. Indeed, by using ilev it is possible to set different values
! of the same parameter at different levels 1,...,nlev-1, even in cases where
! the parameter must have the same value at all the levels but the coarsest one.
! For this reason, the interface mld_precset to this routine has been built in
! such a way that ilev is not visible to the user (see mld_prec_mod.f90).
!
subroutine mld_zcprecsetr(p,what,val,info,ilev,ilmax,pos,idx)
use psb_base_mod
use mld_z_prec_mod, mld_protect_name => mld_zcprecsetr
implicit none
! Arguments
class(mld_zprec_type), intent(inout) :: p
character(len=*), intent(in) :: what
real(psb_dpk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_), optional, intent(in) :: ilev,ilmax
character(len=*), optional, intent(in) :: pos
integer(psb_ipk_), intent(in), optional :: idx
! Local variables
integer(psb_ipk_) :: ilev_,nlev_, ilmax_, il
real(psb_dpk_) :: thr
character(len=*), parameter :: name='mld_precsetr'
info = psb_success_
if (present(ilev)) then
ilev_ = ilev
else
ilev_ = 1
end if
select case(psb_toupper(what))
case ('MIN_CR_RATIO')
p%min_cr_ratio = max(done,val)
return
end select
if (.not.allocated(p%precv)) then
write(psb_err_unit,*) name,&
&': Error: uninitialized preconditioner,',&
&' should call MLD_PRECINIT'
info = 3111
return
endif
nlev_ = size(p%precv)
if (present(ilev)) then
ilev_ = ilev
if (present(ilmax)) then
ilmax_ = ilmax
else
ilmax_ = ilev_
end if
else
ilev_ = 1
ilmax_ = ilev_
end if
if ((ilev_<1).or.(ilev_ > nlev_)) then
info = -1
write(psb_err_unit,*) name,&
&': Error: invalid ILEV/NLEV combination',ilev_, nlev_
return
endif
if ((ilmax_<1).or.(ilmax_ > nlev_)) then
info = -1
write(psb_err_unit,*) name,&
&': Error: invalid ILMAX/NLEV combination',ilmax_, nlev_
return
endif
!
! Set preconditioner parameters at level ilev.
!
if (present(ilev)) then
do il=ilev_, ilmax_
call p%precv(il)%set(what,val,info,pos=pos,idx=idx)
end do
else if (.not.present(ilev)) then
!
! ilev not specified: set preconditioner parameters at all the appropriate levels
!
select case(psb_toupper(what))
case('COARSE_ILUTHRS')
ilev_=nlev_
call p%precv(ilev_)%set('SUB_ILUTHRS',val,info,pos=pos)
case default
do il=1,nlev_
call p%precv(il)%set(what,val,info,pos=pos,idx=idx)
end do
end select
endif
end subroutine mld_zcprecsetr