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686 lines
21 KiB
Fortran
686 lines
21 KiB
Fortran
!!$
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|
!!$ Parallel Sparse BLAS v2.0
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|
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
|
!!$
|
|
!!$ 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
|
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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_ddot.f90
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!
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! Function: psb_ddot
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! psb_ddot forms the dot product of two distributed vectors,
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!
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! dot := sub( X )**T * sub( Y )
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!
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! where sub( X ) denotes X(:,JX)
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!
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! sub( Y ) denotes Y(:,JY).
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!
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! Parameters:
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! x - real,dimension(:,:). The input vector containing the entries of sub( X ).
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! y - real,dimension(:,:). The input vector containing the entries of sub( Y ).
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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! jx - integer(optional). The column offset for sub( X ).
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! jy - integer(optional). The column offset for sub( Y ).
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!
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function psb_ddot(x, y,desc_a, info, jx, jy)
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use psb_descriptor_type
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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(kind(1.d0)), intent(in) :: x(:,:), y(:,:)
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(in), optional :: jx, jy
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integer, intent(out) :: info
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real(kind(1.D0)) :: psb_ddot
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! locals
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integer :: ictxt, np, me,&
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& err_act, n, iix, jjx, ix, ijx, iy, ijy, iiy, jjy, i, m, j, k
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real(kind(1.D0)) :: dot_local
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real(kind(1.d0)) :: ddot
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character(len=20) :: name, ch_err
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name='psb_ddot'
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -ione) then
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info = 2010
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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 = ione
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if (present(jx)) then
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ijx = jx
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else
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ijx = ione
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endif
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iy = ione
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if (present(jy)) then
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ijy = jy
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else
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ijy = ione
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endif
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if(ijx.ne.ijy) then
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info=3050
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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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m = psb_cd_get_global_rows(desc_a)
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! check vector correctness
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call psb_chkvect(m,ione,size(x,1),ix,ijx,desc_a,info,iix,jjx)
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if (info == 0) &
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& call psb_chkvect(m,ione,size(y,1),iy,ijy,desc_a,info,iiy,jjy)
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if(info.ne.0) then
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info=4010
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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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goto 9999
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end if
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if ((iix.ne.ione).or.(iiy.ne.ione)) then
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info=3040
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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(m.ne.0) then
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if(psb_cd_get_local_rows(desc_a).gt.0) then
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dot_local = ddot(psb_cd_get_local_rows(desc_a),&
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& x(iix,jjx),ione,y(iiy,jjy),ione)
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! adjust dot_local because overlapped elements are computed more than once
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i=1
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do while (desc_a%ovrlap_elem(i).ne.-ione)
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dot_local = dot_local -&
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& (desc_a%ovrlap_elem(i+1)-1)/desc_a%ovrlap_elem(i+1)*&
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& x(iix+desc_a%ovrlap_elem(i)-1,jjx)*&
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& y(iiy+desc_a%ovrlap_elem(i)-1,jjy)
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i = i+2
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end do
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else
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dot_local=0.d0
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end if
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else
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dot_local=0.d0
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end if
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! compute global sum
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call psb_sum(ictxt, dot_local)
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psb_ddot = dot_local
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error(ictxt)
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return
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end if
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return
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end function psb_ddot
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!!$
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!!$ Parallel Sparse BLAS v2.0
|
|
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
|
!!$
|
|
!!$ 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
|
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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! Function: psb_ddotv
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! psb_ddot forms the dot product of two distributed vectors,
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!
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! dot := X**T * Y
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!
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! Parameters:
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! x - real,dimension(:). The input vector containing the entries of X.
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! y - real,dimension(:). The input vector containing the entries of Y.
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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!
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function psb_ddotv(x, y,desc_a, info)
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use psb_descriptor_type
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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(kind(1.d0)), intent(in) :: x(:), y(:)
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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real(kind(1.D0)) :: psb_ddotv
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! locals
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integer :: int_err(5), ictxt, np, me,&
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& err_act, n, iix, jjx, ix, jx, iy, jy, iiy, jjy, i, m, j, k
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real(kind(1.D0)) :: dot_local
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real(kind(1.d0)) :: ddot
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character(len=20) :: name, ch_err
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name='psb_ddot'
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -ione) then
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info = 2010
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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 = ione
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iy = ione
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jx = ione
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jy = ione
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m = psb_cd_get_global_rows(desc_a)
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! check vector correctness
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call psb_chkvect(m,ione,size(x,1),ix,jx,desc_a,info,iix,jjx)
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if (info == 0) &
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& call psb_chkvect(m,ione,size(y,1),iy,jy,desc_a,info,iiy,jjy)
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if(info.ne.0) then
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info=4010
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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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goto 9999
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end if
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if ((iix.ne.ione).or.(iiy.ne.ione)) then
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info=3040
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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(m.ne.0) then
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if(psb_cd_get_local_rows(desc_a).gt.0) then
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dot_local = ddot(psb_cd_get_local_rows(desc_a),&
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& x,ione,y,ione)
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! adjust dot_local because overlapped elements are computed more than once
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i=1
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do while (desc_a%ovrlap_elem(i).ne.-ione)
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dot_local = dot_local -&
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& (desc_a%ovrlap_elem(i+1)-1)/desc_a%ovrlap_elem(i+1)*&
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& x(desc_a%ovrlap_elem(i))*&
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& y(desc_a%ovrlap_elem(i))
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i = i+2
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end do
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else
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dot_local=0.d0
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end if
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else
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dot_local=0.d0
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end if
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! compute global sum
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call psb_sum(ictxt, dot_local)
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psb_ddotv = dot_local
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error(ictxt)
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return
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end if
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return
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end function psb_ddotv
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!!$
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|
!!$ Parallel Sparse BLAS v2.0
|
|
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
|
!!$
|
|
!!$ 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.
|
|
!!$
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!!$
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! Subroutine: psb_ddotvs
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! psb_ddot forms the dot product of two distributed vectors,
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!
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! dot := X**T * Y
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!
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! Parameters:
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! res - real. The result.
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|
! x - real,dimension(:). The input vector containing the entries of X.
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! y - real,dimension(:). The input vector containing the entries of Y.
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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!
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subroutine psb_ddotvs(res, x, y,desc_a, info)
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use psb_descriptor_type
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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(kind(1.d0)), intent(in) :: x(:), y(:)
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real(kind(1.d0)), intent(out) :: res
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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! locals
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integer :: int_err(5), ictxt, np, me,&
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& err_act, n, iix, jjx, ix, ijx, iy, ijy, iiy, jjy, i, m, j, k
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real(kind(1.D0)) :: dot_local
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real(kind(1.d0)) :: ddot
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character(len=20) :: name, ch_err
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name='psb_ddot'
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -ione) then
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info = 2010
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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 = ione
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iy = ione
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m = psb_cd_get_global_rows(desc_a)
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! check vector correctness
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call psb_chkvect(m,ione,size(x,1),ix,ix,desc_a,info,iix,jjx)
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if (info == 0) &
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& call psb_chkvect(m,ione,size(y,1),iy,iy,desc_a,info,iiy,jjy)
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if(info.ne.0) then
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info=4010
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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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goto 9999
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end if
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|
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if ((iix.ne.ione).or.(iiy.ne.ione)) then
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info=3040
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call psb_errpush(info,name)
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goto 9999
|
|
end if
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|
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if(m.ne.0) then
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if(psb_cd_get_local_rows(desc_a).gt.0) then
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dot_local = ddot(psb_cd_get_local_rows(desc_a),&
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& x,ione,y,ione)
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! adjust dot_local because overlapped elements are computed more than once
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i=1
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do while (desc_a%ovrlap_elem(i).ne.-ione)
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|
dot_local = dot_local -&
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& (desc_a%ovrlap_elem(i+1)-1)/desc_a%ovrlap_elem(i+1)*&
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& x(desc_a%ovrlap_elem(i))*&
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& y(desc_a%ovrlap_elem(i))
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i = i+2
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end do
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else
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dot_local=0.d0
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end if
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else
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dot_local=0.d0
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end if
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! compute global sum
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call psb_sum(ictxt, dot_local)
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res = dot_local
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call psb_erractionrestore(err_act)
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return
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|
9999 continue
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call psb_erractionrestore(err_act)
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|
|
|
if (err_act.eq.act_abort) then
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call psb_error(ictxt)
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return
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end if
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return
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end subroutine psb_ddotvs
|
|
|
|
|
|
|
|
|
|
!!$
|
|
!!$ Parallel Sparse BLAS v2.0
|
|
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
|
!!$
|
|
!!$ 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.
|
|
!!$
|
|
!!$
|
|
! Subroutine: psb_dmdots
|
|
! psb_ddot forms the dot product of two distributed vectors,
|
|
!
|
|
! dot := sub( X )**T * sub( Y )
|
|
!
|
|
! where sub( X ) denotes X(:,JX)
|
|
!
|
|
! sub( Y ) denotes Y(:,JY).
|
|
!
|
|
! Parameters:
|
|
! res - real. The result.
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! x - real,dimension(:,:). The input vector containing the entries of sub( X ).
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! y - real,dimension(:,:). The input vector containing the entries of sub( Y ).
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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!
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subroutine psb_dmdots(res, x, y, desc_a, info)
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|
use psb_descriptor_type
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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
|
|
|
|
real(kind(1.d0)), intent(in) :: x(:,:), y(:,:)
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real(kind(1.d0)), intent(out) :: res(:)
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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|
|
|
! locals
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integer :: int_err(5), ictxt, np, me,&
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& err_act, n, iix, jjx, ix, ijx, iy, ijy, iiy, jjy, i, m, j, k
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real(kind(1.d0)),allocatable :: dot_local(:)
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real(kind(1.d0)) :: ddot
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character(len=20) :: name, ch_err
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|
|
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name='psb_dmdots'
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if(psb_get_errstatus().ne.0) return
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|
info=0
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call psb_erractionsave(err_act)
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|
|
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ictxt=psb_cd_get_context(desc_a)
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|
|
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call psb_info(ictxt, me, np)
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if (np == -ione) then
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|
info = 2010
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call psb_errpush(info,name)
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|
goto 9999
|
|
endif
|
|
|
|
ix = ione
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|
iy = ione
|
|
|
|
m = psb_cd_get_global_rows(desc_a)
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|
|
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! check vector correctness
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|
call psb_chkvect(m,ione,size(x,1),ix,ix,desc_a,info,iix,jjx)
|
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if(info.ne.0) then
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|
info=4010
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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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|
goto 9999
|
|
end if
|
|
call psb_chkvect(m,ione,size(y,1),iy,iy,desc_a,info,iiy,jjy)
|
|
if(info.ne.0) then
|
|
info=4010
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if ((ix.ne.ione).or.(iy.ne.ione)) then
|
|
info=3040
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
k = min(size(x,2),size(y,2))
|
|
allocate(dot_local(k))
|
|
|
|
if(m.ne.0) then
|
|
if(psb_cd_get_local_rows(desc_a).gt.0) then
|
|
do j=1,k
|
|
dot_local(j) = ddot(psb_cd_get_local_rows(desc_a),&
|
|
& x(1,j),ione,y(1,j),ione)
|
|
! adjust dot_local because overlapped elements are computed more than once
|
|
i=1
|
|
do while (desc_a%ovrlap_elem(i).ne.-ione)
|
|
dot_local(j) = dot_local(j) -&
|
|
& (desc_a%ovrlap_elem(i+1)-1)/desc_a%ovrlap_elem(i+1)*&
|
|
& x(desc_a%ovrlap_elem(i)-1,j)*&
|
|
& y(desc_a%ovrlap_elem(i)-1,j)
|
|
i = i+2
|
|
end do
|
|
end do
|
|
else
|
|
dot_local(:)=0.d0
|
|
end if
|
|
else
|
|
dot_local(:)=0.d0
|
|
end if
|
|
|
|
! compute global sum
|
|
call psb_sum(ictxt, dot_local(1:k))
|
|
|
|
res(1:k) = dot_local(1:k)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
|
|
if (err_act.eq.act_abort) then
|
|
call psb_error(ictxt)
|
|
return
|
|
end if
|
|
return
|
|
end subroutine psb_dmdots
|
|
|
|
|
|
subroutine psb_ddot2v(res, x, y,w,z,desc_a, info)
|
|
use psb_descriptor_type
|
|
use psb_check_mod
|
|
use psb_error_mod
|
|
use psb_penv_mod
|
|
implicit none
|
|
|
|
real(kind(1.d0)), intent(in) :: x(:), y(:),w(:), z(:)
|
|
real(kind(1.d0)), intent(out) :: res(:)
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer, intent(out) :: info
|
|
|
|
! locals
|
|
integer :: int_err(5), ictxt, np, me,&
|
|
& err_act, n, iix, jjx, ix, ijx, iy, ijy, iiy, jjy, i, m, j, k
|
|
real(kind(1.D0)) :: dot_local(2)
|
|
real(kind(1.d0)) :: ddot
|
|
character(len=20) :: name, ch_err
|
|
|
|
name='psb_ddot'
|
|
if(psb_get_errstatus().ne.0) return
|
|
info=0
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=psb_cd_get_context(desc_a)
|
|
|
|
call psb_info(ictxt, me, np)
|
|
if (np == -ione) then
|
|
info = 2010
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
ix = ione
|
|
iy = ione
|
|
m = psb_cd_get_global_rows(desc_a)
|
|
|
|
! check vector correctness
|
|
call psb_chkvect(m,ione,size(x,1),ix,ix,desc_a,info,iix,jjx)
|
|
if (info == 0) &
|
|
& call psb_chkvect(m,ione,size(y,1),iy,iy,desc_a,info,iiy,jjy)
|
|
if(info.ne.0) then
|
|
info=4010
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if ((iix.ne.ione).or.(iiy.ne.ione)) then
|
|
info=3040
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
if(m.ne.0) then
|
|
if(psb_cd_get_local_rows(desc_a).gt.0) then
|
|
dot_local(1) = ddot(psb_cd_get_local_rows(desc_a),&
|
|
& x,ione,y,ione)
|
|
dot_local(2) = ddot(psb_cd_get_local_rows(desc_a),&
|
|
& w,ione,z,ione)
|
|
! adjust dot_local because overlapped elements are computed more than once
|
|
i=1
|
|
do while (desc_a%ovrlap_elem(i).ne.-ione)
|
|
dot_local(1) = dot_local(1) -&
|
|
& (desc_a%ovrlap_elem(i+1)-1)/desc_a%ovrlap_elem(i+1)*&
|
|
& x(desc_a%ovrlap_elem(i))*&
|
|
& y(desc_a%ovrlap_elem(i))
|
|
dot_local(2) = dot_local(2) -&
|
|
& (desc_a%ovrlap_elem(i+1)-1)/desc_a%ovrlap_elem(i+1)*&
|
|
& w(desc_a%ovrlap_elem(i))*&
|
|
& z(desc_a%ovrlap_elem(i))
|
|
i = i+2
|
|
end do
|
|
else
|
|
dot_local=0.d0
|
|
end if
|
|
else
|
|
dot_local=0.d0
|
|
end if
|
|
|
|
! compute global sum
|
|
call psb_sum(ictxt, dot_local)
|
|
|
|
res(1:2) = dot_local(1:2)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 continue
|
|
call psb_erractionrestore(err_act)
|
|
|
|
if (err_act.eq.act_abort) then
|
|
call psb_error(ictxt)
|
|
return
|
|
end if
|
|
return
|
|
end subroutine psb_ddot2v
|
|
|