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357 lines
12 KiB
Fortran
357 lines
12 KiB
Fortran
!
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! Parallel Sparse BLAS version 3.4
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! (C) Copyright 2006, 2010, 2015
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! Salvatore Filippone University of Rome Tor Vergata
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! Alfredo Buttari CNRS-IRIT, Toulouse
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!
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! Redistribution and use in source and binary forms, with or without
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! modification, are permitted provided that the following conditions
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! are met:
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! 1. Redistributions of source code must retain the above copyright
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! notice, this list of conditions and the following disclaimer.
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! 2. Redistributions in binary form must reproduce the above copyright
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! notice, this list of conditions, and the following disclaimer in the
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! documentation and/or other materials provided with the distribution.
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! 3. The name of the PSBLAS group or the names of its contributors may
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! not be used to endorse or promote products derived from this
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! software without specific written permission.
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!
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! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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! POSSIBILITY OF SUCH DAMAGE.
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!
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!
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!
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! File: psb_krylov_conv_mod.f90
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! Interfaces for Krylov subspace iterative methods.
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!
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Module psb_s_krylov_conv_mod
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use psb_base_krylov_conv_mod
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interface psb_init_conv
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module procedure psb_s_init_conv, psb_s_init_conv_vect
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end interface
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interface psb_check_conv
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module procedure psb_s_check_conv, psb_s_check_conv_vect
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end interface
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contains
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subroutine psb_s_init_conv(methdname,stopc,trace,itmax,a,x,b,eps,&
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& desc_a,stopdat,info)
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use psb_base_mod
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implicit none
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character(len=*), intent(in) :: methdname
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integer(psb_ipk_), intent(in) :: stopc, trace, itmax
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type(psb_sspmat_type), intent(in) :: a
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real(psb_spk_), intent(inout) :: b(:), x(:)
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real(psb_spk_), intent(in) :: eps
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type(psb_desc_type), intent(in) :: desc_a
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type(psb_itconv_type) :: stopdat
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: ictxt, me, np, err_act, ierr(5)
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character(len=20) :: name
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real(psb_spk_), allocatable :: r(:)
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info = psb_success_
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name = 'psb_init_conv'
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call psb_erractionsave(err_act)
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ictxt=desc_a%get_context()
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call psb_info(ictxt, me, np)
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stopdat%controls(:) = 0
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stopdat%values(:) = 0.0d0
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stopdat%controls(psb_ik_stopc_) = stopc
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stopdat%controls(psb_ik_trace_) = trace
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stopdat%controls(psb_ik_itmax_) = itmax
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select case(stopdat%controls(psb_ik_stopc_))
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case (1)
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stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
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if (info == psb_success_)&
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& stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
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case (2)
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stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
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case (3)
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call psb_geall(r,desc_a,info)
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call psb_geaxpby(sone,b,szero,r,desc_a,info)
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call psb_spmm(-sone,a,x,sone,r,desc_a,info)
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stopdat%values(psb_ik_r0n2_) = psb_genrm2(r,desc_a,info)
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call psb_gefree(r,desc_a,info)
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case default
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info=psb_err_invalid_istop_
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ierr(1) = stopc
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end select
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
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goto 9999
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end if
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stopdat%values(psb_ik_eps_) = eps
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stopdat%values(psb_ik_errnum_) = dzero
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stopdat%values(psb_ik_errden_) = done
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if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
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& call log_header(methdname)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ictxt,err_act)
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return
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end subroutine psb_s_init_conv
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function psb_s_check_conv(methdname,it,x,r,desc_a,stopdat,info) result(res)
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use psb_base_mod
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implicit none
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character(len=*), intent(in) :: methdname
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integer(psb_ipk_), intent(in) :: it
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real(psb_spk_), intent(in) :: x(:), r(:)
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type(psb_desc_type), intent(in) :: desc_a
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type(psb_itconv_type) :: stopdat
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logical :: res
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: ictxt, me, np, err_act
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character(len=20) :: name
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info = psb_success_
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name = 'psb_check_conv'
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call psb_erractionsave(err_act)
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ictxt = desc_a%get_context()
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call psb_info(ictxt,me,np)
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res = .false.
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select case(stopdat%controls(psb_ik_stopc_))
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case(1)
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stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
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if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
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stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
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stopdat%values(psb_ik_errden_) =&
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& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)&
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& +stopdat%values(psb_ik_bni_))
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case(2)
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stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
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stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
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stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
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case(3)
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stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
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stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
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stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_r0n2_)
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case default
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
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goto 9999
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end select
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_non_
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call psb_errpush(info,name)
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goto 9999
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end if
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if (stopdat%values(psb_ik_errden_) == dzero) then
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res = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
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else
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res = (stopdat%values(psb_ik_errnum_) <= &
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& stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
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end if
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res = (res.or.(stopdat%controls(psb_ik_itmax_) <= it))
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if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
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& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.res)) then
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call log_conv(methdname,me,it,ione,stopdat%values(psb_ik_errnum_),&
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& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ictxt,err_act)
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return
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end function psb_s_check_conv
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subroutine psb_s_init_conv_vect(methdname,stopc,trace,itmax,a,x,b,eps,desc_a,stopdat,info)
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use psb_base_mod
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implicit none
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character(len=*), intent(in) :: methdname
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integer(psb_ipk_), intent(in) :: stopc, trace,itmax
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type(psb_sspmat_type), intent(in) :: a
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real(psb_spk_), intent(in) :: eps
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type(psb_s_vect_type), intent(inout) :: x, b
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type(psb_desc_type), intent(in) :: desc_a
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type(psb_itconv_type) :: stopdat
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: ictxt, me, np, err_act, ierr(5)
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character(len=20) :: name
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type(psb_s_vect_type) :: r
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info = psb_success_
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name = 'psb_init_conv'
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call psb_erractionsave(err_act)
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ictxt=desc_a%get_context()
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call psb_info(ictxt, me, np)
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stopdat%controls(:) = 0
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stopdat%values(:) = dzero
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stopdat%controls(psb_ik_stopc_) = stopc
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stopdat%controls(psb_ik_trace_) = trace
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stopdat%controls(psb_ik_itmax_) = itmax
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select case(stopdat%controls(psb_ik_stopc_))
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case (1)
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stopdat%values(psb_ik_ani_) = psb_spnrmi(a,desc_a,info)
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if (info == psb_success_)&
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& stopdat%values(psb_ik_bni_) = psb_geamax(b,desc_a,info)
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case (2)
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stopdat%values(psb_ik_bn2_) = psb_genrm2(b,desc_a,info)
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case (3)
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call psb_geasb(r,desc_a,info,scratch=.true.)
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call psb_geaxpby(sone,b,szero,r,desc_a,info)
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call psb_spmm(-sone,a,x,sone,r,desc_a,info)
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stopdat%values(psb_ik_r0n2_) = psb_genrm2(r,desc_a,info)
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call psb_gefree(r,desc_a,info)
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case default
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info=psb_err_invalid_istop_
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ierr(1) = stopc
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call psb_errpush(info,name,i_err=ierr)
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goto 9999
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end select
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if (info /= psb_success_) then
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call psb_errpush(psb_err_internal_error_,name,a_err="Init conv check data")
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goto 9999
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end if
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stopdat%values(psb_ik_eps_) = eps
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stopdat%values(psb_ik_errnum_) = dzero
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stopdat%values(psb_ik_errden_) = done
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if ((stopdat%controls(psb_ik_trace_) > 0).and. (me == 0))&
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& call log_header(methdname)
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ictxt,err_act)
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return
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end subroutine psb_s_init_conv_vect
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function psb_s_check_conv_vect(methdname,it,x,r,desc_a,stopdat,info) result(res)
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use psb_base_mod
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implicit none
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character(len=*), intent(in) :: methdname
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integer(psb_ipk_), intent(in) :: it
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type(psb_s_vect_type), intent(inout) :: x, r
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type(psb_desc_type), intent(in) :: desc_a
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type(psb_itconv_type) :: stopdat
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logical :: res
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integer(psb_ipk_), intent(out) :: info
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integer(psb_ipk_) :: ictxt, me, np, err_act
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character(len=20) :: name
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info = psb_success_
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res = .false.
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if (psb_errstatus_fatal()) return
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name = 'psb_check_conv'
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call psb_erractionsave(err_act)
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ictxt = desc_a%get_context()
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call psb_info(ictxt,me,np)
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select case(stopdat%controls(psb_ik_stopc_))
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case(1)
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stopdat%values(psb_ik_rni_) = psb_geamax(r,desc_a,info)
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if (info == psb_success_) stopdat%values(psb_ik_xni_) = psb_geamax(x,desc_a,info)
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stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rni_)
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stopdat%values(psb_ik_errden_) = &
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& (stopdat%values(psb_ik_ani_)*stopdat%values(psb_ik_xni_)&
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& +stopdat%values(psb_ik_bni_))
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case(2)
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stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
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stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
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stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_bn2_)
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case(3)
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stopdat%values(psb_ik_rn2_) = psb_genrm2(r,desc_a,info)
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stopdat%values(psb_ik_errnum_) = stopdat%values(psb_ik_rn2_)
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stopdat%values(psb_ik_errden_) = stopdat%values(psb_ik_r0n2_)
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case default
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info=psb_err_internal_error_
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call psb_errpush(info,name,a_err="Control data in stopdat messed up!")
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goto 9999
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end select
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if (info /= psb_success_) then
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info=psb_err_from_subroutine_non_
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call psb_errpush(info,name)
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goto 9999
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end if
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if (stopdat%values(psb_ik_errden_) == dzero) then
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res = (stopdat%values(psb_ik_errnum_) <= stopdat%values(psb_ik_eps_))
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else
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res = (stopdat%values(psb_ik_errnum_) <=&
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& stopdat%values(psb_ik_eps_)*stopdat%values(psb_ik_errden_))
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end if
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res = (res.or.(stopdat%controls(psb_ik_itmax_) <= it))
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if ( (stopdat%controls(psb_ik_trace_) > 0).and.&
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& ((mod(it,stopdat%controls(psb_ik_trace_)) == 0).or.res)) then
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call log_conv(methdname,me,it,ione,stopdat%values(psb_ik_errnum_),&
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& stopdat%values(psb_ik_errden_),stopdat%values(psb_ik_eps_))
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end if
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call psb_erractionrestore(err_act)
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return
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9999 call psb_error_handler(ictxt,err_act)
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return
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end function psb_s_check_conv_vect
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end module psb_s_krylov_conv_mod
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