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psblas3/krylov/psb_c_krylov_conv_mod.f90

359 lines
12 KiB
Fortran

!
! Parallel Sparse BLAS version 3.5
! (C) Copyright 2006-2018
! Salvatore Filippone
! Alfredo Buttari
!
! 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 PSBLAS 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 PSBLAS 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: psb_krylov_conv_mod.f90
! Interfaces for Krylov subspace iterative methods.
!
Module psb_c_krylov_conv_mod
use psb_base_krylov_conv_mod
interface psb_init_conv
module procedure psb_c_init_conv, psb_c_init_conv_vect
end interface
interface psb_check_conv
module procedure psb_c_check_conv, psb_c_check_conv_vect
end interface
contains
subroutine psb_c_init_conv(methdname,stopc,trace,itmax,a,x,b,eps,&
& desc_a,stopdat,info)
use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname
integer(psb_ipk_), intent(in) :: stopc, trace, itmax
type(psb_cspmat_type), intent(in) :: a
complex(psb_spk_), intent(inout) :: b(:), x(:)
real(psb_spk_), intent(in) :: eps
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
integer(psb_ipk_), intent(out) :: info
type(psb_ctxt_type) :: ctxt
integer(psb_ipk_) :: me, np, err_act
character(len=20) :: name
complex(psb_spk_), allocatable :: r(:)
info = psb_success_
name = 'psb_init_conv'
call psb_erractionsave(err_act)
ctxt=desc_a%get_context()
call psb_info(ctxt, me, np)
stopdat%controls(:) = 0
stopdat%values(:) = 0.0d0
stopdat%controls(psb_ik_stopc_) = stopc
stopdat%controls(psb_ik_trace_) = trace
stopdat%controls(psb_ik_itmax_) = itmax
select case(stopdat%controls(psb_ik_stopc_))
case (1)
stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
if (info == psb_success_)&
& stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
case (2)
stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
case (3)
call psb_geall(r,desc_a,info)
call psb_geaxpby(cone,b,czero,r,desc_a,info)
call psb_spmm(-cone,a,x,cone,r,desc_a,info)
stopdat%values(psb_ik_r0n2_) = psb_genrm2(r,desc_a,info)
call psb_gefree(r,desc_a,info)
case default
info=psb_err_invalid_istop_
call psb_errpush(info,name,i_err=(/stopc/))
goto 9999
end select
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
goto 9999
end if
stopdat%values(psb_ik_eps_) = eps
stopdat%values(psb_ik_errnum_) = dzero
stopdat%values(psb_ik_errden_) = done
if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
& call log_header(methdname)
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ctxt,err_act)
return
end subroutine psb_c_init_conv
function psb_c_check_conv(methdname,it,x,r,desc_a,stopdat,info) result(res)
use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname
integer(psb_ipk_), intent(in) :: it
complex(psb_spk_), intent(in) :: x(:), r(:)
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
logical :: res
integer(psb_ipk_), intent(out) :: info
type(psb_ctxt_type) :: ctxt
integer(psb_ipk_) :: me, np, err_act
character(len=20) :: name
info = psb_success_
name = 'psb_check_conv'
call psb_erractionsave(err_act)
ctxt = desc_a%get_context()
call psb_info(ctxt,me,np)
res = .false.
select case(stopdat%controls(psb_ik_stopc_))
case(1)
stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
stopdat%values(psb_ik_errden_) =&
& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)&
& +stopdat%values(psb_ik_bni_))
case(2)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
case(3)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_r0n2_)
case default
info=psb_err_internal_error_
call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
goto 9999
end select
if (info /= psb_success_) then
info=psb_err_from_subroutine_non_
call psb_errpush(info,name)
goto 9999
end if
if (stopdat%values(psb_ik_errden_) == dzero) then
res = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
else
res = (stopdat%values(psb_ik_errnum_) <= &
& stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
end if
res = (res.or.(stopdat%controls(psb_ik_itmax_) <= it))
if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.res)) then
call log_conv(methdname,me,it,ione,stopdat%values(psb_ik_errnum_),&
& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ctxt,err_act)
return
end function psb_c_check_conv
subroutine psb_c_init_conv_vect(methdname,stopc,trace,itmax,a,x,b,eps,desc_a,stopdat,info)
use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname
integer(psb_ipk_), intent(in) :: stopc, trace,itmax
type(psb_cspmat_type), intent(in) :: a
real(psb_spk_), intent(in) :: eps
type(psb_c_vect_type), intent(inout) :: x, b
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
integer(psb_ipk_), intent(out) :: info
type(psb_ctxt_type) :: ctxt
integer(psb_ipk_) :: me, np, err_act
character(len=20) :: name
type(psb_c_vect_type) :: r
info = psb_success_
name = 'psb_init_conv'
call psb_erractionsave(err_act)
ctxt=desc_a%get_context()
call psb_info(ctxt, me, np)
stopdat%controls(:) = 0
stopdat%values(:) = dzero
stopdat%controls(psb_ik_stopc_) = stopc
stopdat%controls(psb_ik_trace_) = trace
stopdat%controls(psb_ik_itmax_) = itmax
select case(stopdat%controls(psb_ik_stopc_))
case (1)
stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
if (info == psb_success_)&
& stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
case (2)
stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
case (3)
call psb_geasb(r,desc_a,info,scratch=.true.)
call psb_geaxpby(cone,b,czero,r,desc_a,info)
call psb_spmm(-cone,a,x,cone,r,desc_a,info)
stopdat%values(psb_ik_r0n2_) = psb_genrm2(r,desc_a,info)
call psb_gefree(r,desc_a,info)
case default
info=psb_err_invalid_istop_
call psb_errpush(info,name,i_err=(/stopc/))
goto 9999
end select
if (info /= psb_success_) then
call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
goto 9999
end if
stopdat%values(psb_ik_eps_) = eps
stopdat%values(psb_ik_errnum_) = dzero
stopdat%values(psb_ik_errden_) = done
if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
& call log_header(methdname)
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ctxt,err_act)
return
end subroutine psb_c_init_conv_vect
function psb_c_check_conv_vect(methdname,it,x,r,desc_a,stopdat,info) result(res)
use psb_base_mod
implicit none
character(len=*), intent(in) :: methdname
integer(psb_ipk_), intent(in) :: it
type(psb_c_vect_type), intent(inout) :: x, r
type(psb_desc_type), intent(in) :: desc_a
type(psb_itconv_type) :: stopdat
logical :: res
integer(psb_ipk_), intent(out) :: info
type(psb_ctxt_type) :: ctxt
integer(psb_ipk_) :: me, np, err_act
character(len=20) :: name
info = psb_success_
res = .false.
if (psb_errstatus_fatal()) return
name = 'psb_check_conv'
call psb_erractionsave(err_act)
ctxt = desc_a%get_context()
call psb_info(ctxt,me,np)
select case(stopdat%controls(psb_ik_stopc_))
case(1)
stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
stopdat%values(psb_ik_errden_) = &
& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)&
& +stopdat%values(psb_ik_bni_))
case(2)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
case(3)
stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_r0n2_)
case default
info=psb_err_internal_error_
call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
goto 9999
end select
if (info /= psb_success_) then
info=psb_err_from_subroutine_non_
call psb_errpush(info,name)
goto 9999
end if
if (stopdat%values(psb_ik_errden_) == dzero) then
res = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
else
res = (stopdat%values(psb_ik_errnum_) <=&
& stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
end if
res = (res.or.(stopdat%controls(psb_ik_itmax_) <= it))
if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.res)) then
call log_conv(methdname,me,it,ione,stopdat%values(psb_ik_errnum_),&
& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
end if
call psb_erractionrestore(err_act)
return
9999 call psb_error_handler(ctxt,err_act)
return
end function psb_c_check_conv_vect
end module psb_c_krylov_conv_mod