!!$
!!$ 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.
!!$
!!$
! File: psb_ddot.f90
!
! Function: psb_ddot
! 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:
! x - real,dimension(:,:). The input vector containing the entries of sub( X ).
! y - real,dimension(:,:). The input vector containing the entries of sub( Y ).
! desc_a - type(<psb_desc_type>). The communication descriptor.
! info - integer. Eventually returns an error code.
! jx - integer(optional). The column offset for sub( X ).
! jy - integer(optional). The column offset for sub( Y ).
!
function psb_ddot(x, y,desc_a, info, jx, jy)
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(:,:)
type(psb_desc_type), intent(in) :: desc_a
integer, intent(in), optional :: jx, jy
integer, intent(out) :: info
real(kind(1.D0)) :: psb_ddot
! locals
integer :: ictxt, np, me,&
& err_act, n, iix, jjx, ix, ijx, iy, ijy, iiy, jjy, i, m, j, k
real(kind(1.D0)) :: dot_local
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
if (present(jx)) then
ijx = jx
else
ijx = ione
endif
iy = ione
if (present(jy)) then
ijy = jy
else
ijy = ione
endif
if(ijx.ne.ijy) then
info=3050
call psb_errpush(info,name)
goto 9999
end if
m = psb_cd_get_global_rows(desc_a)
! check vector correctness
call psb_chkvect(m,ione,size(x,1),ix,ijx,desc_a,info,iix,jjx)
if (info == 0) &
& call psb_chkvect(m,ione,size(y,1),iy,ijy,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 = ddot(psb_cd_get_local_rows(desc_a),&
& x(iix,jjx),ione,y(iiy,jjy),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 = dot_local -&
& (desc_a%ovrlap_elem(i+1)-1)/desc_a%ovrlap_elem(i+1)*&
& x(iix+desc_a%ovrlap_elem(i)-1,jjx)*&
& y(iiy+desc_a%ovrlap_elem(i)-1,jjy)
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)
psb_ddot = dot_local
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end function psb_ddot
!!$
!!$ 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.
!!$
!!$
! Function: psb_ddotv
! psb_ddot forms the dot product of two distributed vectors,
!
! dot := X**T * Y
!
! Parameters:
! x - real,dimension(:). The input vector containing the entries of X.
! y - real,dimension(:). The input vector containing the entries of Y.
! desc_a - type(<psb_desc_type>). The communication descriptor.
! info - integer. Eventually returns an error code.
!
function psb_ddotv(x, y,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(:)
type(psb_desc_type), intent(in) :: desc_a
integer, intent(out) :: info
real(kind(1.D0)) :: psb_ddotv
! locals
integer :: int_err(5), ictxt, np, me,&
& err_act, n, iix, jjx, ix, jx, iy, jy, iiy, jjy, i, m, j, k
real(kind(1.D0)) :: dot_local
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
jx = ione
jy = ione
m = psb_cd_get_global_rows(desc_a)
! check vector correctness
call psb_chkvect(m,ione,size(x,1),ix,jx,desc_a,info,iix,jjx)
if (info == 0) &
& call psb_chkvect(m,ione,size(y,1),iy,jy,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 = ddot(psb_cd_get_local_rows(desc_a),&
& x,ione,y,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 = dot_local -&
& (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))
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)
psb_ddotv = dot_local
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end function psb_ddotv
!!$
!!$ 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_ddotvs
! psb_ddot forms the dot product of two distributed vectors,
!
! dot := X**T * Y
!
! Parameters:
! res - real. The result.
! x - real,dimension(:). The input vector containing the entries of X.
! y - real,dimension(:). The input vector containing the entries of Y.
! desc_a - type(<psb_desc_type>). The communication descriptor.
! info - integer. Eventually returns an error code.
!
subroutine psb_ddotvs(res, x, y,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(:)
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
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 = ddot(psb_cd_get_local_rows(desc_a),&
& x,ione,y,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 = dot_local -&
& (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))
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 = dot_local
call psb_erractionrestore(err_act)
return
9999 continue
call psb_erractionrestore(err_act)
if (err_act.eq.psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
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.
! x - real,dimension(:,:). The input vector containing the entries of sub( X ).
! y - real,dimension(:,:). The input vector containing the entries of sub( Y ).
! desc_a - type(<psb_desc_type>). The communication descriptor.
! info - integer. Eventually returns an error code.
!
subroutine psb_dmdots(res, x, y, 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(:,:)
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)),allocatable :: dot_local(:)
real(kind(1.d0)) :: ddot
character(len=20) :: name, ch_err
name='psb_dmdots'
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.ne.0) then
info=4010
ch_err='psb_chkvect'
call psb_errpush(info,name,a_err=ch_err)
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.psb_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.psb_act_abort_) then
call psb_error(ictxt)
return
end if
return
end subroutine psb_ddot2v