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623 lines
20 KiB
Fortran
623 lines
20 KiB
Fortran
!!$
|
|
!!$ Parallel Sparse BLAS version 3.1
|
|
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$
|
|
!!$ 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_zdot.f90
|
|
!
|
|
! Function: psb_zdot
|
|
! psb_zdot forms the dot product of two distributed vectors,
|
|
!
|
|
! dot := sub( X )**C * sub( Y )
|
|
!
|
|
! where sub( X ) denotes X(:,JX)
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|
!
|
|
! sub( Y ) denotes Y(:,JY).
|
|
!
|
|
! Arguments:
|
|
! x(:,:) - complex The input vector containing the entries of sub( X ).
|
|
! y(:,:) - complex The input vector containing the entries of sub( Y ).
|
|
! desc_a - type(psb_desc_type). The communication descriptor.
|
|
! info - integer. Return code
|
|
! jx - integer(optional). The column offset for sub( X ).
|
|
! jy - integer(optional). The column offset for sub( Y ).
|
|
!
|
|
function psb_zdot_vect(x, y, desc_a,info) result(res)
|
|
use psb_desc_mod
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|
use psb_z_base_mat_mod
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|
use psb_check_mod
|
|
use psb_error_mod
|
|
use psb_penv_mod
|
|
use psb_z_vect_mod
|
|
use psb_z_psblas_mod, psb_protect_name => psb_zdot_vect
|
|
implicit none
|
|
complex(psb_dpk_) :: res
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|
type(psb_z_vect_type), intent(inout) :: x, y
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
! locals
|
|
integer(psb_ipk_) :: ictxt, np, me, idx, ndm,&
|
|
& err_act, iix, jjx, ix, ijx, iy, ijy, iiy, jjy, i, m, nr
|
|
character(len=20) :: name, ch_err
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|
|
|
name='psb_sdot'
|
|
res = zzero
|
|
if (psb_errstatus_fatal()) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=desc_a%get_context()
|
|
call psb_info(ictxt, me, np)
|
|
if (np == -ione) then
|
|
info = psb_err_context_error_
|
|
call psb_errpush(info,name)
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|
goto 9999
|
|
endif
|
|
if (.not.allocated(x%v)) then
|
|
info = psb_err_invalid_vect_state_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
if (.not.allocated(y%v)) then
|
|
info = psb_err_invalid_vect_state_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
|
|
ix = ione
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|
ijx = ione
|
|
|
|
iy = ione
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|
ijy = ione
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|
|
|
m = desc_a%get_global_rows()
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|
|
|
! check vector correctness
|
|
call psb_chkvect(m,ione,x%get_nrows(),ix,ijx,desc_a,info,iix,jjx)
|
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if (info == psb_success_) &
|
|
& call psb_chkvect(m,ione,y%get_nrows(),iy,ijy,desc_a,info,iiy,jjy)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if ((iix /= ione).or.(iiy /= ione)) then
|
|
info=psb_err_ix_n1_iy_n1_unsupported_
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|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
nr = desc_a%get_local_rows()
|
|
if(nr > 0) then
|
|
res = x%dot(nr,y)
|
|
! FIXME
|
|
! adjust dot_local because overlapped elements are computed more than once
|
|
!!$ 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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|
!!$ dot_local = dot_local - (real(ndm-1)/real(ndm))*(x(idx)*y(idx))
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|
!!$ end do
|
|
else
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|
res = zzero
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|
end if
|
|
|
|
! compute global sum
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|
call psb_sum(ictxt, res)
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|
|
|
call psb_erractionrestore(err_act)
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|
return
|
|
|
|
9999 call psb_error_handler(ictxt,err_act)
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|
|
|
return
|
|
|
|
end function psb_zdot_vect
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|
|
|
function psb_zdot(x, y,desc_a, info, jx, jy) result(res)
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|
use psb_base_mod, psb_protect_name => psb_zdot
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implicit none
|
|
|
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complex(psb_dpk_), intent(in) :: x(:,:), y(:,:)
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type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_ipk_), intent(in), optional :: jx, jy
|
|
integer(psb_ipk_), intent(out) :: info
|
|
complex(psb_dpk_) :: res
|
|
|
|
! locals
|
|
integer(psb_ipk_) :: ictxt, np, me, idx, ndm,&
|
|
& err_act, iix, jjx, ix, ijx, iy, ijy, iiy, jjy, i, m, nr, &
|
|
& lldx, lldy
|
|
complex(psb_dpk_) :: zdotc
|
|
character(len=20) :: name, ch_err
|
|
|
|
name='psb_zdot'
|
|
if(psb_get_errstatus() /= 0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=desc_a%get_context()
|
|
call psb_info(ictxt, me, np)
|
|
if (np == -ione) then
|
|
info = psb_err_context_error_
|
|
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 /= ijy) then
|
|
info=3050
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
m = desc_a%get_global_rows()
|
|
lldx = size(x,1)
|
|
lldy = size(y,1)
|
|
|
|
! check vector correctness
|
|
call psb_chkvect(m,ione,lldx,ix,ijx,desc_a,info,iix,jjx)
|
|
if (info == psb_success_) &
|
|
& call psb_chkvect(m,ione,lldy,iy,ijy,desc_a,info,iiy,jjy)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if ((iix /= ione).or.(iiy /= ione)) then
|
|
info=psb_err_ix_n1_iy_n1_unsupported_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
nr = desc_a%get_local_rows()
|
|
if(nr > 0) then
|
|
res = zdotc(int(nr,kind=psb_mpik_), x(iix:,jjx),1,y(iiy:,jjy),1)
|
|
! adjust dot_local because overlapped elements are computed more than once
|
|
do i=1,size(desc_a%ovrlap_elem,1)
|
|
idx = desc_a%ovrlap_elem(i,1)
|
|
ndm = desc_a%ovrlap_elem(i,2)
|
|
res = res - (real(ndm-1)/real(ndm))*(conjg(x(idx,jjx))*y(idx,jjy))
|
|
end do
|
|
else
|
|
res = zzero
|
|
end if
|
|
|
|
! compute global sum
|
|
call psb_sum(ictxt, res)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ictxt,err_act)
|
|
|
|
return
|
|
end function psb_zdot
|
|
|
|
|
|
|
|
|
|
!!$
|
|
!!$ Parallel Sparse BLAS version 3.1
|
|
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$
|
|
!!$ 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_zdotv
|
|
! psb_zdotv forms the dot product of two distributed vectors,
|
|
!
|
|
! dot := X**C * Y
|
|
!
|
|
! Arguments:
|
|
! x(:) - complex The input vector containing the entries of X.
|
|
! y(:) - complex The input vector containing the entries of Y.
|
|
! desc_a - type(psb_desc_type). The communication descriptor.
|
|
! info - integer. Return code
|
|
!
|
|
function psb_zdotv(x, y,desc_a, info) result(res)
|
|
use psb_base_mod, psb_protect_name => psb_zdotv
|
|
implicit none
|
|
|
|
complex(psb_dpk_), intent(in) :: x(:), y(:)
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_ipk_), intent(out) :: info
|
|
complex(psb_dpk_) :: res
|
|
|
|
! locals
|
|
integer(psb_ipk_) :: ictxt, np, me, idx, ndm,&
|
|
& err_act, iix, jjx, ix, jx, iy, jy, iiy, jjy, i, m, nr, &
|
|
& lldx, lldy
|
|
complex(psb_dpk_) :: zdotc
|
|
character(len=20) :: name, ch_err
|
|
|
|
name='psb_zdot'
|
|
if(psb_get_errstatus() /= 0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=desc_a%get_context()
|
|
|
|
call psb_info(ictxt, me, np)
|
|
if (np == -ione) then
|
|
info = psb_err_context_error_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
ix = ione
|
|
iy = ione
|
|
jx = ione
|
|
jy = ione
|
|
m = desc_a%get_global_rows()
|
|
lldx = size(x,1)
|
|
lldy = size(y,1)
|
|
! check vector correctness
|
|
call psb_chkvect(m,ione,lldx,ix,jx,desc_a,info,iix,jjx)
|
|
if (info == psb_success_)&
|
|
& call psb_chkvect(m,ione,lldy,iy,jy,desc_a,info,iiy,jjy)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if ((iix /= ione).or.(iiy /= ione)) then
|
|
info=psb_err_ix_n1_iy_n1_unsupported_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
nr = desc_a%get_local_rows()
|
|
if(nr > 0) then
|
|
res = zdotc(int(nr,kind=psb_mpik_), x,1,y,1)
|
|
! adjust res because overlapped elements are computed more than once
|
|
do i=1,size(desc_a%ovrlap_elem,1)
|
|
idx = desc_a%ovrlap_elem(i,1)
|
|
ndm = desc_a%ovrlap_elem(i,2)
|
|
res = res - (real(ndm-1)/real(ndm))*(conjg(x(idx))*y(idx))
|
|
end do
|
|
else
|
|
res = zzero
|
|
end if
|
|
|
|
! compute global sum
|
|
call psb_sum(ictxt, res)
|
|
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ictxt,err_act)
|
|
|
|
return
|
|
end function psb_zdotv
|
|
|
|
|
|
|
|
!!$
|
|
!!$ Parallel Sparse BLAS version 3.1
|
|
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$
|
|
!!$ 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_zdotvs
|
|
! psb_zdotvs forms the dot product of two distributed vectors,
|
|
!
|
|
! res := X**C * Y
|
|
!
|
|
! Arguments:
|
|
! res - complex. The result.
|
|
! x(:) - complex The input vector containing the entries of X.
|
|
! y(:) - complex The input vector containing the entries of Y.
|
|
! desc_a - type(psb_desc_type). The communication descriptor.
|
|
! info - integer. Return code
|
|
!
|
|
subroutine psb_zdotvs(res, x, y,desc_a, info)
|
|
use psb_base_mod, psb_protect_name => psb_zdotvs
|
|
implicit none
|
|
|
|
complex(psb_dpk_), intent(in) :: x(:), y(:)
|
|
complex(psb_dpk_), intent(out) :: res
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
! locals
|
|
integer(psb_ipk_) :: ictxt, np, me, idx, ndm,&
|
|
& err_act, iix, jjx, ix, iy, iiy, jjy, i, m,nr, &
|
|
& lldx, lldy
|
|
complex(psb_dpk_) :: zdotc
|
|
character(len=20) :: name, ch_err
|
|
|
|
name='psb_zdot'
|
|
if(psb_get_errstatus() /= 0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=desc_a%get_context()
|
|
|
|
call psb_info(ictxt, me, np)
|
|
if (np == -ione) then
|
|
info = psb_err_context_error_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
ix = ione
|
|
iy = ione
|
|
m = desc_a%get_global_rows()
|
|
lldx = size(x,1)
|
|
lldy = size(y,1)
|
|
! check vector correctness
|
|
call psb_chkvect(m,ione,lldx,ix,ix,desc_a,info,iix,jjx)
|
|
if (info == psb_success_) &
|
|
& call psb_chkvect(m,ione,lldy,iy,iy,desc_a,info,iiy,jjy)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if ((iix /= ione).or.(iiy /= ione)) then
|
|
info=psb_err_ix_n1_iy_n1_unsupported_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
nr = desc_a%get_local_rows()
|
|
if(nr > 0) then
|
|
res = zdotc(int(nr,kind=psb_mpik_), x,1,y,1)
|
|
! adjust res because overlapped elements are computed more than once
|
|
do i=1,size(desc_a%ovrlap_elem,1)
|
|
idx = desc_a%ovrlap_elem(i,1)
|
|
ndm = desc_a%ovrlap_elem(i,2)
|
|
res = res - (real(ndm-1)/real(ndm))*(conjg(x(idx))*y(idx))
|
|
end do
|
|
else
|
|
res = zzero
|
|
end if
|
|
|
|
! compute global sum
|
|
call psb_sum(ictxt, res)
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ictxt,err_act)
|
|
|
|
return
|
|
end subroutine psb_zdotvs
|
|
|
|
|
|
|
|
|
|
!!$
|
|
!!$ Parallel Sparse BLAS version 3.1
|
|
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012, 2013
|
|
!!$ Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
|
|
!!$
|
|
!!$ 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_zmdots
|
|
! psb_zmdots forms the dot product of multiple distributed vectors,
|
|
!
|
|
! res(i) := ( X(:,i) )**C * ( Y(:,i) )
|
|
!
|
|
! Arguments:
|
|
! res(:) - complex. The result.
|
|
! x(:) - complex The input vector containing the entries of sub( X ).
|
|
! y(:) - complex The input vector containing the entries of sub( Y ).
|
|
! desc_a - type(psb_desc_type). The communication descriptor.
|
|
! info - integer. Return code
|
|
!
|
|
subroutine psb_zmdots(res, x, y, desc_a, info)
|
|
use psb_base_mod, psb_protect_name => psb_zmdots
|
|
implicit none
|
|
|
|
complex(psb_dpk_), intent(in) :: x(:,:), y(:,:)
|
|
complex(psb_dpk_), intent(out) :: res(:)
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer(psb_ipk_), intent(out) :: info
|
|
|
|
! locals
|
|
integer(psb_ipk_) :: ictxt, np, me, idx, ndm,&
|
|
& err_act, iix, jjx, ix, iy, iiy, jjy, i, m, j, k, nr, &
|
|
& lldx, lldy
|
|
complex(psb_dpk_) :: zdotc
|
|
character(len=20) :: name, ch_err
|
|
|
|
name='psb_zmdots'
|
|
if(psb_get_errstatus() /= 0) return
|
|
info=psb_success_
|
|
call psb_erractionsave(err_act)
|
|
|
|
ictxt=desc_a%get_context()
|
|
|
|
call psb_info(ictxt, me, np)
|
|
if (np == -ione) then
|
|
info = psb_err_context_error_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
ix = ione
|
|
iy = ione
|
|
|
|
m = desc_a%get_global_rows()
|
|
lldx = size(x,1)
|
|
lldy = size(y,1)
|
|
|
|
! check vector correctness
|
|
call psb_chkvect(m,ione,lldx,ix,ix,desc_a,info,iix,jjx)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
call psb_chkvect(m,ione,lldy,iy,iy,desc_a,info,iiy,jjy)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='psb_chkvect'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if ((ix /= ione).or.(iy /= ione)) then
|
|
info=psb_err_ix_n1_iy_n1_unsupported_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
k = min(size(x,2),size(y,2))
|
|
|
|
nr = desc_a%get_local_rows()
|
|
if(nr > 0) then
|
|
do j=1,k
|
|
res(j) = zdotc(int(nr,kind=psb_mpik_),x(1:,j),1,y(1:,j),1)
|
|
! adjust res because overlapped elements are computed more than once
|
|
end do
|
|
do i=1,size(desc_a%ovrlap_elem,1)
|
|
idx = desc_a%ovrlap_elem(i,1)
|
|
ndm = desc_a%ovrlap_elem(i,2)
|
|
res(1:k) = res(1:k) - &
|
|
& (real(ndm-1)/real(ndm))*(conjg(x(idx,1:k))*y(idx,1:k))
|
|
end do
|
|
else
|
|
res(:) = zzero
|
|
end if
|
|
|
|
|
|
! compute global sum
|
|
call psb_sum(ictxt, res(1:k))
|
|
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ictxt,err_act)
|
|
|
|
return
|
|
end subroutine psb_zmdots
|