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stopcriterion
Salvatore Filippone 8 years ago
parent b499d2e542
commit c8616a4c4b
1 changed files with 55 additions and 456 deletions
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511
tests/newslv/mld_d_tlu_solver.f90
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@ -45,13 +45,15 @@
!
! This module serves as an example of how to define a new solver and integrate
! it in MLD2P4 via the P%SET(sv,info) method.
! The solver itself is really nothing other than the ILU solver disguised under a new name.
! In this example we are extending the ILU solver by implementing a new factorization algorithm.
! In actual reality, we are just giving a new name to ILU(0), but this should be sufficient to show
! the basics.
!
! The code is divided in two files:
! 1. The interface file (this one)
! 2. The implementation file (mld_d_tlu_solver_impl.f90)
!
! The separation between interface and iplementation is an essential part of the
! The separation between interface and implementation is an essential part of the
! object-oriented design. The most appropriate tool would be to have the implementation
! in a SUBMODULE, something which we plan to do at some point in the future but will
! need to check for compiler support.
@ -61,92 +63,57 @@
module mld_d_tlu_solver
use mld_d_base_solver_mod
use mld_d_ilu_fact_mod
type, extends(mld_d_base_solver_type) :: mld_d_tlu_solver_type
type(psb_dspmat_type) :: l, u
real(psb_dpk_), allocatable :: d(:)
type(psb_d_vect_type) :: dv
integer(psb_ipk_) :: fact_type, fill_in
real(psb_dpk_) :: thresh
use mld_d_ilu_solver
! use mld_d_ilu_fact_mod
type, extends(mld_d_ilu_solver_type) :: mld_d_tlu_solver_type
!
! These are already defined in the ILU solver type; since we
! are supposedly implementing a new factorization strategy, the
! data components are the same, and we only need to change
! the methods that build the solver.
!
!type(psb_dspmat_type) :: l, u
!real(psb_dpk_), allocatable :: d(:)
!type(psb_d_vect_type) :: dv
!integer(psb_ipk_) :: fact_type, fill_in
!real(psb_dpk_) :: thresh
contains
procedure, pass(sv) :: dump => mld_d_tlu_solver_dmp
procedure, pass(sv) :: ccheck => d_tlu_solver_check
procedure, pass(sv) :: clone => mld_d_tlu_solver_clone
procedure, pass(sv) :: build => mld_d_tlu_solver_bld
procedure, pass(sv) :: cnv => mld_d_tlu_solver_cnv
procedure, pass(sv) :: apply_v => mld_d_tlu_solver_apply_vect
procedure, pass(sv) :: apply_a => mld_d_tlu_solver_apply
procedure, pass(sv) :: free => d_tlu_solver_free
procedure, pass(sv) :: seti => d_tlu_solver_seti
procedure, pass(sv) :: setc => d_tlu_solver_setc
procedure, pass(sv) :: setr => d_tlu_solver_setr
procedure, pass(sv) :: cseti => d_tlu_solver_cseti
procedure, pass(sv) :: csetc => d_tlu_solver_csetc
procedure, pass(sv) :: csetr => d_tlu_solver_csetr
procedure, pass(sv) :: descr => d_tlu_solver_descr
!
! Again, we can freely reuse these methods because they would be
! in common among all possible ILU factorizations
!
!
!procedure, pass(sv) :: dump => mld_d_tlu_solver_dmp
!procedure, pass(sv) :: ccheck => d_tlu_solver_check
!procedure, pass(sv) :: clone => mld_d_tlu_solver_clone
!procedure, pass(sv) :: cnv => mld_d_tlu_solver_cnv
!procedure, pass(sv) :: apply_v => mld_d_tlu_solver_apply_vect
!procedure, pass(sv) :: apply_a => mld_d_tlu_solver_apply
!procedure, pass(sv) :: free => d_tlu_solver_free
!procedure, pass(sv) :: seti => d_tlu_solver_seti
!procedure, pass(sv) :: setc => d_tlu_solver_setc
!procedure, pass(sv) :: setr => d_tlu_solver_setr
!procedure, pass(sv) :: cseti => d_tlu_solver_cseti
!procedure, pass(sv) :: csetc => d_tlu_solver_csetc
!procedure, pass(sv) :: csetr => d_tlu_solver_csetr
!procedure, pass(sv) :: descr => d_tlu_solver_descr
!procedure, pass(sv) :: sizeof => d_tlu_solver_sizeof
!procedure, pass(sv) :: get_nzeros => d_tlu_solver_get_nzeros
!
! These methods are specific for the new solver type
! and therefore need to be overridden
!
procedure, pass(sv) :: default => d_tlu_solver_default
procedure, pass(sv) :: sizeof => d_tlu_solver_sizeof
procedure, pass(sv) :: get_nzeros => d_tlu_solver_get_nzeros
procedure, nopass :: get_fmt => d_tlu_solver_get_fmt
procedure, nopass :: get_id => d_tlu_solver_get_id
procedure, pass(sv) :: build => mld_d_tlu_solver_bld
procedure, nopass :: get_fmt => d_tlu_solver_get_fmt
procedure, nopass :: get_id => d_tlu_solver_get_id
end type mld_d_tlu_solver_type
private :: d_tlu_solver_bld, d_tlu_solver_apply, &
& d_tlu_solver_free, d_tlu_solver_seti, &
& d_tlu_solver_setc, d_tlu_solver_setr,&
& d_tlu_solver_descr, d_tlu_solver_sizeof, &
& d_tlu_solver_default, d_tlu_solver_dmp, &
& d_tlu_solver_apply_vect, d_tlu_solver_get_nzeros
character(len=15), parameter, private :: &
& fact_names(0:mld_slv_delta_+4)=(/&
& 'none ','none ',&
& 'none ','none ',&
& 'none ','DIAG ?? ',&
& 'TLU(n) ',&
& 'MTLU(n) ','TLU(t,n) '/)
interface
subroutine mld_d_tlu_solver_apply_vect(alpha,sv,x,beta,y,desc_data,&
& trans,work,info,init,initu)
import :: psb_desc_type, mld_d_tlu_solver_type, psb_d_vect_type, psb_dpk_, &
& psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
type(psb_desc_type), intent(in) :: desc_data
class(mld_d_tlu_solver_type), intent(inout) :: sv
type(psb_d_vect_type),intent(inout) :: x
type(psb_d_vect_type),intent(inout) :: y
real(psb_dpk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
real(psb_dpk_),target, intent(inout) :: work(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: init
type(psb_d_vect_type),intent(inout), optional :: initu
end subroutine mld_d_tlu_solver_apply_vect
end interface
interface
subroutine mld_d_tlu_solver_apply(alpha,sv,x,beta,y,desc_data,&
& trans,work,info,init,initu)
import :: psb_desc_type, mld_d_tlu_solver_type, psb_d_vect_type, psb_dpk_, &
& psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
implicit none
type(psb_desc_type), intent(in) :: desc_data
class(mld_d_tlu_solver_type), intent(inout) :: sv
real(psb_dpk_),intent(inout) :: x(:)
real(psb_dpk_),intent(inout) :: y(:)
real(psb_dpk_),intent(in) :: alpha,beta
character(len=1),intent(in) :: trans
real(psb_dpk_),target, intent(inout) :: work(:)
integer(psb_ipk_), intent(out) :: info
character, intent(in), optional :: init
real(psb_dpk_),intent(inout), optional :: initu(:)
end subroutine mld_d_tlu_solver_apply
end interface
private :: d_tlu_solver_get_fmt, d_tlu_solver_get_id
interface
subroutine mld_d_tlu_solver_bld(a,desc_a,sv,info,b,amold,vmold, imold)
@ -165,51 +132,14 @@ module mld_d_tlu_solver
end subroutine mld_d_tlu_solver_bld
end interface
interface
subroutine mld_d_tlu_solver_cnv(sv,info,amold,vmold,imold)
import :: mld_d_tlu_solver_type, psb_dpk_, &
& psb_d_base_sparse_mat, psb_d_base_vect_type,&
& psb_ipk_, psb_i_base_vect_type
implicit none
class(mld_d_tlu_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(out) :: info
class(psb_d_base_sparse_mat), intent(in), optional :: amold
class(psb_d_base_vect_type), intent(in), optional :: vmold
class(psb_i_base_vect_type), intent(in), optional :: imold
end subroutine mld_d_tlu_solver_cnv
end interface
interface
subroutine mld_d_tlu_solver_dmp(sv,ictxt,level,info,prefix,head,solver)
import :: psb_desc_type, mld_d_tlu_solver_type, psb_d_vect_type, psb_dpk_, &
& psb_dspmat_type, psb_d_base_sparse_mat, psb_d_base_vect_type, psb_ipk_
class(mld_d_tlu_solver_type), intent(in) :: sv
integer(psb_ipk_), intent(in) :: ictxt
integer(psb_ipk_), intent(in) :: level
integer(psb_ipk_), intent(out) :: info
character(len=*), intent(in), optional :: prefix, head
logical, optional, intent(in) :: solver
end subroutine mld_d_tlu_solver_dmp
end interface
interface
subroutine mld_d_tlu_solver_clone(sv,svout,info)
import :: psb_desc_type, psb_dspmat_type, psb_d_base_sparse_mat, &
& psb_d_vect_type, psb_d_base_vect_type, psb_dpk_, &
& mld_d_base_solver_type, mld_d_tlu_solver_type, psb_ipk_
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
class(mld_d_base_solver_type), allocatable, intent(inout) :: svout
integer(psb_ipk_), intent(out) :: info
end subroutine mld_d_tlu_solver_clone
end interface
contains
!
! This method is a copy of the ILU method, because for this example we are
! only repackaging existing code.
!
subroutine d_tlu_solver_default(sv)
Implicit None
! Arguments
@ -222,337 +152,6 @@ contains
return
end subroutine d_tlu_solver_default
subroutine d_tlu_solver_check(sv,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='d_tlu_solver_check'
call psb_erractionsave(err_act)
info = psb_success_
call mld_check_def(sv%fact_type,&
& 'Factorization',mld_ilu_n_,is_legal_ilu_fact)
select case(sv%fact_type)
case(mld_ilu_n_,mld_milu_n_)
call mld_check_def(sv%fill_in,&
& 'Level',izero,is_int_non_negative)
case(mld_ilu_t_)
call mld_check_def(sv%thresh,&
& 'Eps',dzero,is_legal_d_fact_thrs)
end select
if (info /= psb_success_) goto 9999
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_check
subroutine d_tlu_solver_seti(sv,what,val,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(in) :: what
integer(psb_ipk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='d_tlu_solver_seti'
info = psb_success_
call psb_erractionsave(err_act)
select case(what)
case(mld_sub_solve_)
sv%fact_type = val
case(mld_sub_fillin_)
sv%fill_in = val
case default
call sv%mld_d_base_solver_type%set(what,val,info)
end select
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_seti
subroutine d_tlu_solver_setc(sv,what,val,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(in) :: what
character(len=*), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act, ival
character(len=20) :: name='d_tlu_solver_setc'
info = psb_success_
call psb_erractionsave(err_act)
ival = sv%stringval(val)
if (ival >= 0) then
call sv%set(what,ival,info)
end if
if (info /= psb_success_) then
info = psb_err_from_subroutine_
call psb_errpush(info, name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_setc
subroutine d_tlu_solver_setr(sv,what,val,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(in) :: what
real(psb_dpk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='d_tlu_solver_setr'
call psb_erractionsave(err_act)
info = psb_success_
select case(what)
case(mld_sub_iluthrs_)
sv%thresh = val
case default
call sv%mld_d_base_solver_type%set(what,val,info)
end select
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_setr
subroutine d_tlu_solver_cseti(sv,what,val,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
character(len=*), intent(in) :: what
integer(psb_ipk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='d_tlu_solver_cseti'
info = psb_success_
call psb_erractionsave(err_act)
select case(psb_toupper(what))
case('SUB_SOLVE')
sv%fact_type = val
case('SUB_FILLIN')
sv%fill_in = val
case default
call sv%mld_d_base_solver_type%set(what,val,info)
end select
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_cseti
subroutine d_tlu_solver_csetc(sv,what,val,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
character(len=*), intent(in) :: what
character(len=*), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act, ival
character(len=20) :: name='d_tlu_solver_csetc'
info = psb_success_
call psb_erractionsave(err_act)
ival = sv%stringval(val)
if (ival >= 0) then
call sv%set(what,ival,info)
end if
if (info /= psb_success_) then
info = psb_err_from_subroutine_
call psb_errpush(info, name)
goto 9999
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_csetc
subroutine d_tlu_solver_csetr(sv,what,val,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
character(len=*), intent(in) :: what
real(psb_dpk_), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='d_tlu_solver_csetr'
call psb_erractionsave(err_act)
info = psb_success_
select case(psb_toupper(what))
case('SUB_ILUTHRS')
sv%thresh = val
case default
call sv%mld_d_base_solver_type%set(what,val,info)
end select
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_csetr
subroutine d_tlu_solver_free(sv,info)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(inout) :: sv
integer(psb_ipk_), intent(out) :: info
integer(psb_ipk_) :: err_act
character(len=20) :: name='d_tlu_solver_free'
call psb_erractionsave(err_act)
info = psb_success_
if (allocated(sv%d)) then
deallocate(sv%d,stat=info)
if (info /= psb_success_) then
info = psb_err_alloc_dealloc_
call psb_errpush(info,name)
goto 9999
end if
end if
call sv%l%free()
call sv%u%free()
call sv%dv%free(info)
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_free
subroutine d_tlu_solver_descr(sv,info,iout,coarse)
Implicit None
! Arguments
class(mld_d_tlu_solver_type), intent(in) :: sv
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='mld_d_tlu_solver_descr'
integer(psb_ipk_) :: iout_
call psb_erractionsave(err_act)
info = psb_success_
if (present(iout)) then
iout_ = iout
else
iout_ = psb_out_unit
endif
write(iout_,*) ' TLU: template for a new solver type'
write(iout_,*) ' testing with a clone of ILU '
write(iout_,*) ' Incomplete factorization solver: ',&
& mld_fact_names(sv%fact_type)
select case(sv%fact_type)
case(mld_ilu_n_,mld_milu_n_)
write(iout_,*) ' Fill level:',sv%fill_in
case(mld_ilu_t_)
write(iout_,*) ' Fill level:',sv%fill_in
write(iout_,*) ' Fill threshold :',sv%thresh
end select
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(err_act)
return
end subroutine d_tlu_solver_descr
function d_tlu_solver_get_nzeros(sv) result(val)
implicit none
! Arguments
class(mld_d_tlu_solver_type), intent(in) :: sv
integer(psb_long_int_k_) :: val
integer(psb_ipk_) :: i
val = 0
val = val + sv%dv%get_nrows()
val = val + sv%l%get_nzeros()
val = val + sv%u%get_nzeros()
return
end function d_tlu_solver_get_nzeros
function d_tlu_solver_sizeof(sv) result(val)
implicit none
! Arguments
class(mld_d_tlu_solver_type), intent(in) :: sv
integer(psb_long_int_k_) :: val
integer(psb_ipk_) :: i
val = 2*psb_sizeof_int + psb_sizeof_dp
val = val + sv%dv%sizeof()
val = val + sv%l%sizeof()
val = val + sv%u%sizeof()
return
end function d_tlu_solver_sizeof
function d_tlu_solver_get_fmt() result(val)
implicit none
character(len=32) :: val

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