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284 lines
9.1 KiB
Fortran
284 lines
9.1 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
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!!$ Alfredo Buttari University of Rome Tor Vergata
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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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! File: psb_daxpby.f90
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!
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! Subroutine: psb_daxpby
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! Adds one distributed matrix to another,
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!
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! sub( Y ) := beta * sub( Y ) + alpha * sub( X )
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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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! alpha - real. The scalar used to multiply each component of sub( X ).
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! x - real,dimension(:,:). The input vector containing the entries of sub( X ).
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! beta - real. The scalar used to multiply each component of sub( Y ).
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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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subroutine psb_daxpby(alpha, x, beta,y,desc_a,info, n, jx, jy)
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use psb_descriptor_type
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use psb_check_mod
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use psb_const_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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integer, intent(in), optional :: n, jx, jy
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integer, intent(out) :: info
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type(psb_desc_type), intent(in) :: desc_a
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real(kind(1.D0)), intent(in) :: alpha, beta
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real(kind(1.D0)), intent(in) :: x(:,:)
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real(kind(1.D0)), intent(inout) :: y(:,:)
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! locals
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integer :: ictxt, np, me,&
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& err_act, iix, jjx, ix, iy, ijx, ijy, m, iiy, in, jjy
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real(kind(1.d0)),pointer :: tmpx(:)
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character(len=20) :: name, ch_err
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name='psb_dgeaxpby'
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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 (present(n)) then
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if(((ijx+n).le.size(x,2)).and.&
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& ((ijy+n).le.size(y,2))) then
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in = n
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else
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in = min(size(x,2),size(y,2))
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end if
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else
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in = min(size(x,2),size(y,2))
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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 ((in.ne.0)) then
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if(psb_cd_get_local_rows(desc_a).gt.0) then
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call daxpby(psb_cd_get_local_rows(desc_a),in,&
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& alpha,x(iix,jjx),size(x,1),beta,&
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& y(iiy,jjy),size(y,1),info)
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end if
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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 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_daxpby
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!!$
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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
|
|
!!$ 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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!
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! Subroutine: psb_dgeaxpbyv
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! Adds one distributed matrix to another,
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!
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! Y := beta * Y + alpha * X
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!
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! Parameters:
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! alpha - real. The scalar used to multiply each component of X.
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! x - real,dimension(:). The input vector containing the entries of X.
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! beta - real. The scalar used to multiply each component of Y.
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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_daxpbyv(alpha, x, beta,y,desc_a,info)
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use psb_descriptor_type
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use psb_const_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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integer, intent(out) :: info
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type(psb_desc_type), intent(in) :: desc_a
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real(kind(1.D0)), intent(in) :: alpha, beta
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real(kind(1.D0)), intent(in) :: x(:)
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real(kind(1.D0)), intent(inout) :: y(:)
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! locals
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integer :: ictxt, np, me,&
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& err_act, n, iix, jjx, ix, iy, ijx, m, iiy, in, jjy
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character(len=20) :: name, ch_err
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logical, parameter :: debug=.false.
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name='psb_dgeaxpby'
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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),ix,ione,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 1'
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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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call psb_chkvect(m,ione,size(y),iy,ione,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 2'
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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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end if
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if(psb_cd_get_local_rows(desc_a).gt.0) then
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call daxpby(psb_cd_get_local_rows(desc_a),ione,&
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& alpha,x,size(x),beta,&
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& y,size(y),info)
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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 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_daxpbyv
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