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610 lines
18 KiB
Fortran
610 lines
18 KiB
Fortran
!
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|
! Parallel Sparse BLAS version 3.5
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|
! (C) Copyright 2006-2018
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|
! Salvatore Filippone
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|
! Alfredo Buttari
|
|
!
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|
! 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
|
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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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! File: psb_dnrm2.f90
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!
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! Function: psb_dnrm2
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! Computes the norm2 of a distributed vector,
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!
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! norm2 := sqrt ( sub( X )**C * sub( X ) )
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!
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! where sub( X ) denotes X(:,JX).
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!
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! Arguments:
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! x(:,:) - real The input vector containing the entries of sub( X ).
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! jx - integer(optional). The column offset for sub( X ).
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! global - logical(optional) Whether to perform the global reduction, default: .true.
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!
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function psb_dnrm2(x, desc_a, info, jx,global) result(res)
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use psb_desc_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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real(psb_dpk_), intent(in) :: x(:,:)
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(in), optional :: jx
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integer(psb_ipk_), intent(out) :: info
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real(psb_dpk_) :: res
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logical, intent(in), optional :: global
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! locals
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integer(psb_ipk_) :: ictxt, np, me,&
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& err_act, iix, jjx, ndim, i, id, idx, ndm, ldx
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integer(psb_lpk_) :: ix, ijx, iy, ijy, m
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logical :: global_
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real(psb_dpk_) :: dnrm2, dd
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character(len=20) :: name, ch_err
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name='psb_dnrm2'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ictxt=desc_a%get_context()
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info=psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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if (present(jx)) then
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ijx = jx
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else
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ijx = 1
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endif
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if (present(global)) then
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global_ = global
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else
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global_ = .true.
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end if
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m = desc_a%get_global_rows()
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ldx = size(x,1)
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call psb_chkvect(m,lone,ldx,ix,ijx,desc_a,info,iix,jjx)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix /= 1) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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 (desc_a%get_local_rows() > 0) then
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ndim = desc_a%get_local_rows()
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res = dnrm2( int(ndim,kind=psb_mpk_), x(iix:,jjx), int(ione,kind=psb_mpk_) )
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! adjust because overlapped elements are computed more than once
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do i=1,size(desc_a%ovrlap_elem,1)
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idx = desc_a%ovrlap_elem(i,1)
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ndm = desc_a%ovrlap_elem(i,2)
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dd = real(ndm-1)/real(ndm)
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res = res * sqrt(done - dd*(abs(x(idx,jjx))/res)**2)
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end do
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else
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res = dzero
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end if
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if (global_) call psb_nrm2(ictxt,res)
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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_dnrm2
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!!$
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!!$ Parallel Sparse BLAS version 3.5
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!!$ (C) Copyright 2006-2018
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari
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|
!!$
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!!$ 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)
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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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! Function: psb_dnrm2
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! Computes the norm2 of a distributed vector,
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!
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! norm2 := sqrt ( X**C * X)
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!
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! Arguments:
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! x(:) - real The input vector containing the entries of X.
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! global - logical(optional) Whether to perform the global reduction, default: .true.
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!
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function psb_dnrm2v(x, desc_a, info,global) result(res)
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use psb_desc_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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real(psb_dpk_), intent(in) :: x(:)
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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real(psb_dpk_) :: res
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logical, intent(in), optional :: global
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! locals
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integer(psb_ipk_) :: ictxt, np, me,&
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& err_act, iix, jjx, ndim, i, id, idx, ndm, ldx
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integer(psb_lpk_) :: ix, jx, iy, ijy, m
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real(psb_dpk_) :: dnrm2, dd
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logical :: global_
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character(len=20) :: name, ch_err
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name='psb_dnrm2v'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ictxt=desc_a%get_context()
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info=psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (present(global)) then
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global_ = global
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else
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global_ = .true.
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end if
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ix = 1
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jx=1
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m = desc_a%get_global_rows()
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ldx = size(x,1)
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call psb_chkvect(m,lone,ldx,ix,jx,desc_a,info,iix,jjx)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix /= 1) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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 (desc_a%get_local_rows() > 0) then
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ndim = desc_a%get_local_rows()
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res = dnrm2( int(ndim,kind=psb_mpk_), x, int(ione,kind=psb_mpk_) )
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! adjust because overlapped elements are computed more than once
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do i=1,size(desc_a%ovrlap_elem,1)
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idx = desc_a%ovrlap_elem(i,1)
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ndm = desc_a%ovrlap_elem(i,2)
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dd = real(ndm-1)/real(ndm)
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res = res * sqrt(done - dd*(abs(x(idx))/res)**2)
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end do
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else
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res = dzero
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end if
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if (global_) call psb_nrm2(ictxt,res)
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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_dnrm2v
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! Function: psb_dnrm2_vect
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! Computes the norm2 of a distributed vector,
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!
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! norm2 := sqrt ( X**C * X)
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!
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! Arguments:
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! x - type(psb_d_vect_type) The input vector containing the entries of X.
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! global - logical(optional) Whether to perform the global reduction, default: .true.
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!
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function psb_dnrm2_vect(x, desc_a, info,global) result(res)
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use psb_desc_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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use psb_d_vect_mod
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implicit none
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real(psb_dpk_) :: res
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type(psb_d_vect_type), intent (inout) :: x
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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logical, intent(in), optional :: global
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! locals
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integer(psb_ipk_) :: ictxt, np, me,&
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& err_act, iix, jjx, ndim, i, id, idx, ndm, ldx
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integer(psb_lpk_) :: ix, jx, iy, ijy, m
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logical :: global_
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real(psb_dpk_) :: snrm2, dd
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character(len=20) :: name, ch_err
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name='psb_dnrm2v'
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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info=psb_success_
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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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if (np == -1) then
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info=psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.allocated(x%v)) then
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info = psb_err_invalid_vect_state_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (present(global)) then
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global_ = global
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else
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global_ = .true.
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end if
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ix = 1
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jx = 1
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m = desc_a%get_global_rows()
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ldx = x%get_nrows()
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call psb_chkvect(m,lone,ldx,ix,jx,desc_a,info,iix,jjx)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix /= 1) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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 (desc_a%get_local_rows() > 0) then
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ndim = desc_a%get_local_rows()
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res = x%nrm2(ndim)
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! adjust because overlapped elements are computed more than once
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if (size(desc_a%ovrlap_elem,1)>0) then
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if (x%is_dev()) call x%sync()
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do i=1,size(desc_a%ovrlap_elem,1)
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idx = desc_a%ovrlap_elem(i,1)
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ndm = desc_a%ovrlap_elem(i,2)
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dd = dble(ndm-1)/dble(ndm)
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res = res - sqrt(done - dd*(abs(x%v%v(idx))/res)**2)
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end do
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end if
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else
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res = dzero
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end if
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if (global_) call psb_nrm2(ictxt,res)
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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_dnrm2_vect
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! Function: psb_dnrm2_weight_vect
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! Computes the weighted norm2 of a distributed vector,
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!
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! norm2 := sqrt ( (w.*X)**C * (w.*X))
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!
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! Arguments:
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! x - type(psb_d_vect_type) The input vector containing the entries of X.
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! w - type(psb_d_vect_type) The input vector containing the entries of W.
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! global - logical(optional) Whether to perform the global reduction, default: .true.
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!
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function psb_dnrm2_weight_vect(x,w, desc_a, info,global) result(res)
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use psb_desc_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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use psb_d_vect_mod
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implicit none
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real(psb_dpk_) :: res
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type(psb_d_vect_type), intent (inout) :: x
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type(psb_d_vect_type), intent (inout) :: w
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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logical, intent(in), optional :: global
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! locals
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integer(psb_ipk_) :: ictxt, np, me,&
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& err_act, iix, jjx, ndim, i, id, idx, ndm, ldx
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integer(psb_lpk_) :: ix, jx, iy, ijy, m
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logical :: global_
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real(psb_dpk_) :: snrm2, dd
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character(len=20) :: name, ch_err
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name='psb_dnrm2v_weight'
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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info=psb_success_
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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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if (np == -1) then
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info=psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (.not.allocated(x%v)) then
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info = psb_err_invalid_vect_state_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (present(global)) then
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global_ = global
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else
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global_ = .true.
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end if
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ix = 1
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jx = 1
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m = desc_a%get_global_rows()
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ldx = x%get_nrows()
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call psb_chkvect(m,lone,ldx,ix,jx,desc_a,info,iix,jjx)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix /= 1) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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 (desc_a%get_local_rows() > 0) then
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ndim = desc_a%get_local_rows()
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res = x%nrm2(ndim,w)
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! adjust because overlapped elements are computed more than once
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if (size(desc_a%ovrlap_elem,1)>0) then
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if (x%is_dev()) call x%sync()
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do i=1,size(desc_a%ovrlap_elem,1)
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idx = desc_a%ovrlap_elem(i,1)
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ndm = desc_a%ovrlap_elem(i,2)
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dd = dble(ndm-1)/dble(ndm)
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res = res - sqrt(done - dd*(abs(x%v%v(idx))/res)**2)
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end do
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end if
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else
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res = dzero
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end if
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if (global_) call psb_nrm2(ictxt,res)
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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_dnrm2_weight_vect
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|
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!!$
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!!$ Parallel Sparse BLAS version 3.5
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!!$ (C) Copyright 2006-2018
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!!$ Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari
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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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! Subroutine: psb_dnrm2vs
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! Computes the norm2 of a distributed vector, subroutine version
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!
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! norm2 := sqrt ( X**C * X)
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!
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! Arguments:
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! res - real The result.
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! x(:) - real The input vector containing the entries of X.
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! desc_a - type(psb_desc_type). The communication descriptor.
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! info - integer. Return code
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! global - logical(optional) Whether to perform the global reduction, default: .true.
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!
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subroutine psb_dnrm2vs(res, x, desc_a, info,global)
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use psb_desc_mod
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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real(psb_dpk_), intent(in) :: x(:)
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real(psb_dpk_), intent(out) :: res
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type(psb_desc_type), intent(in) :: desc_a
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integer(psb_ipk_), intent(out) :: info
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logical, intent(in), optional :: global
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! locals
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integer(psb_ipk_) :: ictxt, np, me,&
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& err_act, iix, jjx, ndim, i, id, idx, ndm, ldx
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integer(psb_lpk_) :: ix, jx, iy, ijy, m
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logical :: global_
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real(psb_dpk_) :: nrm2, dnrm2, dd
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character(len=20) :: name, ch_err
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name='psb_dnrm2'
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info=psb_success_
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call psb_erractionsave(err_act)
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if (psb_errstatus_fatal()) then
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info = psb_err_internal_error_ ; goto 9999
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end if
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ictxt=desc_a%get_context()
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info=psb_err_context_error_
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call psb_errpush(info,name)
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goto 9999
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endif
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if (present(global)) then
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global_ = global
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else
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global_ = .true.
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end if
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ix = 1
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jx = 1
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m = desc_a%get_global_rows()
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ldx = size(x,1)
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call psb_chkvect(m,lone,ldx,ix,jx,desc_a,info,iix,jjx)
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if(info /= psb_success_) then
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info=psb_err_from_subroutine_
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix /= 1) then
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info=psb_err_ix_n1_iy_n1_unsupported_
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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 (desc_a%get_local_rows() > 0) then
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ndim = desc_a%get_local_rows()
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res = dnrm2( int(ndim,kind=psb_mpk_), x, int(ione,kind=psb_mpk_) )
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! adjust because overlapped elements are computed more than once
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do i=1,size(desc_a%ovrlap_elem,1)
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idx = desc_a%ovrlap_elem(i,1)
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ndm = desc_a%ovrlap_elem(i,2)
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dd = real(ndm-1)/real(ndm)
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res = res * sqrt(done - dd*(abs(x(idx))/res)**2)
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end do
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else
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res = dzero
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end if
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if (global_) call psb_nrm2(ictxt,res)
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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_dnrm2vs
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