You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
612 lines
18 KiB
Fortran
612 lines
18 KiB
Fortran
!!$
|
|
!!$ 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_dspsm.f90
|
|
!
|
|
! Subroutine: psb_dspsm
|
|
! Performs one of the distributed matrix-vector operations
|
|
!
|
|
! sub( Y ) := alpha * Pr * A-1 * Pc *sub( X ) + beta * sub (Y ), or
|
|
!
|
|
! sub( Y ) := alpha * D * Pr * A-1 * Pc * sub( X ) + beta * sub (Y ), or
|
|
!
|
|
! sub( Y ) := alpha * Pr * A-1 * Pc * D * sub( X ) + beta * sub (Y ), or
|
|
!
|
|
! sub( Y ) := alpha * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
|
|
!
|
|
! sub( Y ) := alpha * D * Pr * A-T * Pc * sub( X ) + beta * sub (Y ), or
|
|
!
|
|
! sub( Y ) := alpha * Pr * A-T * Pc * D * sub( X ) + beta * sub (Y ), or
|
|
!
|
|
! where :
|
|
!
|
|
! sub( X ) denotes X(1:M,JX:JX+K-1),
|
|
!
|
|
! sub( Y ) denotes Y(1:M,JY:JY+K-1).
|
|
!
|
|
! sub( X ) is a distributed
|
|
! vector and T is a M-by-M distributed triangular matrix.
|
|
!
|
|
! Parameters:
|
|
! alpha - real. The scalar alpha.
|
|
! a - type(<psb_dspmat_type>). The sparse matrix containing A.
|
|
! x - real,dimension(:,:). The input vector containing the entries of sub( X ).
|
|
! beta - real. The scalar beta.
|
|
! 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.
|
|
! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
|
|
! unitd - character(optional). Specify some type of operation with the diagonal matrix D.
|
|
! choice - integer(optional). The kind of update to perform on overlap elements.
|
|
! d - real,dimension(:)(optional). Matrix for diagonal scaling.
|
|
! k - integer(optional). The number of right-hand sides.
|
|
! jx - integer(optional). The column offset for sub( X ). If not present 1 is assumed.
|
|
! jy - integer(optional). The column offset for sub( Y ). If not present 1 is assumed.
|
|
! work - real,dimension(:)(optional). Working area.
|
|
!
|
|
subroutine psb_dspsm(alpha,a,x,beta,y,desc_a,info,&
|
|
& trans, unitd, choice, d, k, jx, jy, work)
|
|
|
|
use psb_spmat_type
|
|
use psb_serial_mod
|
|
use psb_descriptor_type
|
|
use psb_comm_mod
|
|
use psi_mod
|
|
use psb_check_mod
|
|
use psb_error_mod
|
|
use psb_string_mod
|
|
use psb_penv_mod
|
|
implicit none
|
|
|
|
real(kind(1.D0)), intent(in) :: alpha, beta
|
|
real(kind(1.d0)), intent(in), target :: x(:,:)
|
|
real(kind(1.d0)), intent(inout), target :: y(:,:)
|
|
type (psb_dspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer, intent(out) :: info
|
|
real(kind(1.d0)), intent(in), optional, target :: d(:)
|
|
real(kind(1.d0)), optional, target :: work(:)
|
|
character, intent(in), optional :: trans, unitd
|
|
integer, intent(in), optional :: choice
|
|
integer, intent(in), optional :: k, jx, jy
|
|
|
|
! locals
|
|
integer :: int_err(5), ictxt, np, me,&
|
|
& err_act, n, iix, jjx, ia, ja, iia, jja, lldx,lldy, lchoice,&
|
|
& ix, iy, ik, ijx, ijy, i, lld,&
|
|
& m, nrow, ncol, liwork, llwork, iiy, jjy
|
|
|
|
character :: lunitd
|
|
integer, parameter :: nb=4
|
|
real(kind(1.d0)),pointer :: iwork(:), xp(:,:), yp(:,:), id(:)
|
|
character :: itrans
|
|
character(len=20) :: name, ch_err
|
|
logical :: aliw
|
|
|
|
name='psb_dspsm'
|
|
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 == -1) then
|
|
info = 2010
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
! just this case right now
|
|
ia = 1
|
|
ja = 1
|
|
|
|
ix = 1
|
|
if (present(jx)) then
|
|
ijx = jx
|
|
else
|
|
ijx = 1
|
|
endif
|
|
|
|
iy = 1
|
|
if (present(jy)) then
|
|
ijy = jy
|
|
else
|
|
ijy = 1
|
|
endif
|
|
|
|
if (present(k)) then
|
|
ik = min(k,size(x,2)-ijx+1)
|
|
ik = min(ik,size(y,2)-ijy+1)
|
|
else
|
|
ik = min(size(x,2)-ijx+1,size(y,2)-ijy+1)
|
|
endif
|
|
|
|
if (present(choice)) then
|
|
lchoice = choice
|
|
else
|
|
lchoice = psb_avg_
|
|
endif
|
|
|
|
if (present(unitd)) then
|
|
lunitd = toupper(unitd)
|
|
else
|
|
lunitd = 'U'
|
|
endif
|
|
|
|
if (present(trans)) then
|
|
itrans = toupper(trans)
|
|
if((itrans.eq.'N').or.(itrans.eq.'T').or. (itrans.eq.'C')) then
|
|
! OK
|
|
else
|
|
info = 70
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
else
|
|
itrans = 'N'
|
|
endif
|
|
|
|
m = psb_cd_get_global_rows(desc_a)
|
|
nrow = psb_cd_get_local_rows(desc_a)
|
|
ncol = psb_cd_get_local_cols(desc_a)
|
|
|
|
lldx = size(x,1)
|
|
lldy = size(y,1)
|
|
|
|
if((lldx.lt.ncol).or.(lldy.lt.ncol)) then
|
|
info=3010
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
! check for presence/size of a work area
|
|
iwork => null()
|
|
liwork= 2*ncol
|
|
if (a%pr(1) /= 0) llwork = liwork + m * ik
|
|
if (a%pl(1) /= 0) llwork = llwork + m * ik
|
|
if (present(work)) then
|
|
if (size(work) >= liwork) then
|
|
aliw =.false.
|
|
else
|
|
aliw=.true.
|
|
endif
|
|
else
|
|
aliw=.true.
|
|
end if
|
|
|
|
if (aliw) then
|
|
allocate(iwork(liwork),stat=info)
|
|
if(info.ne.0) then
|
|
info=4010
|
|
ch_err='psb_realloc'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
iwork => work
|
|
endif
|
|
|
|
iwork(1)=0.d0
|
|
|
|
if(present(d)) then
|
|
lld = size(d)
|
|
id => d
|
|
else
|
|
lld=1
|
|
allocate(id(1))
|
|
id=1.d0
|
|
end if
|
|
|
|
! checking for matrix correctness
|
|
call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
|
|
! checking for vectors correctness
|
|
if (info == 0) &
|
|
& call psb_chkvect(m,ik,size(x,1),ix,ijx,desc_a,info,iix,jjx)
|
|
if (info == 0) &
|
|
& call psb_chkvect(m,ik,size(y,1),iy,ijy,desc_a,info,iiy,jjy)
|
|
if(info.ne.0) then
|
|
info=4010
|
|
ch_err='psb_chkvect/mat'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if(ja.ne.ix) then
|
|
! this case is not yet implemented
|
|
info = 3030
|
|
end if
|
|
|
|
if((iix.ne.1).or.(iiy.ne.1)) then
|
|
! this case is not yet implemented
|
|
info = 3040
|
|
end if
|
|
|
|
if(info.ne.0) then
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
! Perform local triangular system solve
|
|
xp => x(iix:lldx,jjx:jjx+ik-1)
|
|
yp => y(iiy:lldy,jjy:jjy+ik-1)
|
|
call psb_cssm(alpha,a,xp,beta,yp,info,unitd=lunitd,d=id,trans=itrans)
|
|
|
|
if(info.ne.0) then
|
|
info = 4010
|
|
ch_err='dcssm'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
! update overlap elements
|
|
if(lchoice.gt.0) then
|
|
|
|
call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),ik,&
|
|
& done,yp,desc_a,iwork,info)
|
|
|
|
i=0
|
|
! switch on update type
|
|
select case (lchoice)
|
|
case(psb_square_root_)
|
|
do while(desc_a%ovrlap_elem(i).ne.-ione)
|
|
y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_),:) =&
|
|
& y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_),:)/&
|
|
& sqrt(real(desc_a%ovrlap_elem(i+psb_n_dom_ovr_)))
|
|
i = i+2
|
|
end do
|
|
case(psb_avg_)
|
|
do while(desc_a%ovrlap_elem(i).ne.-ione)
|
|
y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_),:) =&
|
|
& y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_),:)/&
|
|
& real(desc_a%ovrlap_elem(i+psb_n_dom_ovr_))
|
|
i = i+2
|
|
end do
|
|
case(psb_sum_)
|
|
! do nothing
|
|
case default
|
|
! wrong value for choice argument
|
|
info = 70
|
|
int_err=(/10,lchoice,0,0,0/)
|
|
call psb_errpush(info,name,i_err=int_err)
|
|
goto 9999
|
|
end select
|
|
end if
|
|
|
|
if(aliw) deallocate(iwork)
|
|
if(.not.present(d)) deallocate(id)
|
|
|
|
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_dspsm
|
|
|
|
!!$
|
|
!!$ 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_dspsmv
|
|
! Performs one of the distributed matrix-vector operations
|
|
!
|
|
! Y := alpha * Pr * A-1 * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * D * Pr * A-1 * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * Pr * A-1 * Pc * D * X + beta * Y, or
|
|
!
|
|
! Y := alpha * Pr * A-T * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * D * Pr * A-T * Pc * X + beta * Y, or
|
|
!
|
|
! Y := alpha * Pr * A-T * Pc * D * X + beta * Y, or
|
|
!
|
|
! X is a distributed
|
|
! vector and T is a M-by-M distributed triangular matrix.
|
|
!
|
|
! Parameters:
|
|
! alpha - real. The scalar alpha.
|
|
! a - type(<psb_dspmat_type>). The sparse matrix containing A.
|
|
! x - real,dimension(:). The input vector containing the entries of X.
|
|
! beta - real. The scalar beta.
|
|
! 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.
|
|
! trans - character(optional). Whether A or A'. If not present 'N' is assumed.
|
|
! unitd - character(optional). Specify some type of operation with the diagonal matrix D.
|
|
! choice - integer(optional). The kind of update to perform on overlap elements.
|
|
! d - real,dimension(:)(optional). Matrix for diagonal scaling.
|
|
! work - real,dimension(:)(optional). Working area.
|
|
!
|
|
subroutine psb_dspsv(alpha,a,x,beta,y,desc_a,info,&
|
|
& trans, unitd, choice, d, work)
|
|
use psb_spmat_type
|
|
use psb_serial_mod
|
|
use psb_descriptor_type
|
|
use psb_comm_mod
|
|
use psi_mod
|
|
use psb_check_mod
|
|
use psb_error_mod
|
|
use psb_string_mod
|
|
use psb_penv_mod
|
|
implicit none
|
|
|
|
real(kind(1.D0)), intent(in) :: alpha, beta
|
|
real(kind(1.d0)), intent(in), target :: x(:)
|
|
real(kind(1.d0)), intent(inout), target :: y(:)
|
|
type(psb_dspmat_type), intent(in) :: a
|
|
type(psb_desc_type), intent(in) :: desc_a
|
|
integer, intent(out) :: info
|
|
real(kind(1.d0)), intent(in), optional, target :: d(:)
|
|
real(kind(1.d0)), optional, target :: work(:)
|
|
character, intent(in), optional :: trans, unitd
|
|
integer, intent(in), optional :: choice
|
|
|
|
! locals
|
|
integer :: int_err(5), ictxt, np, me,&
|
|
& err_act, n, iix, jjx, ia, ja, iia, jja, lldx,lldy, lchoice,&
|
|
& ix, iy, ik, jx, jy, i, lld,&
|
|
& m, nrow, ncol, liwork, llwork, iiy, jjy
|
|
|
|
character :: lunitd
|
|
integer, parameter :: nb=4
|
|
real(kind(1.d0)),pointer :: iwork(:), xp(:), yp(:), id(:)
|
|
character :: itrans
|
|
character(len=20) :: name, ch_err
|
|
logical :: aliw
|
|
|
|
name='psb_dspsv'
|
|
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 == -1) then
|
|
info = 2010
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
! just this case right now
|
|
ia = 1
|
|
ja = 1
|
|
ix = 1
|
|
iy = 1
|
|
ik = 1
|
|
jx= 1
|
|
jy= 1
|
|
|
|
if (present(choice)) then
|
|
lchoice = choice
|
|
else
|
|
lchoice = psb_avg_
|
|
endif
|
|
|
|
if (present(unitd)) then
|
|
lunitd = toupper(unitd)
|
|
else
|
|
lunitd = 'U'
|
|
endif
|
|
|
|
if (present(trans)) then
|
|
itrans = toupper(trans)
|
|
if((itrans.eq.'N').or.(itrans.eq.'T')) then
|
|
! Ok
|
|
else if (itrans.eq.'C') then
|
|
info = 3020
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
else
|
|
info = 70
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
else
|
|
itrans = 'N'
|
|
endif
|
|
|
|
m = psb_cd_get_global_rows(desc_a)
|
|
nrow = psb_cd_get_local_rows(desc_a)
|
|
ncol = psb_cd_get_local_cols(desc_a)
|
|
|
|
lldx = size(x)
|
|
lldy = size(y)
|
|
|
|
if((lldx.lt.ncol).or.(lldy.lt.ncol)) then
|
|
info=3010
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
iwork => null()
|
|
! check for presence/size of a work area
|
|
liwork= 2*ncol
|
|
if (a%pr(1) /= 0) llwork = liwork + m * ik
|
|
if (a%pl(1) /= 0) llwork = llwork + m * ik
|
|
|
|
if (present(work)) then
|
|
if (size(work) >= liwork) then
|
|
aliw =.false.
|
|
else
|
|
aliw=.true.
|
|
endif
|
|
else
|
|
aliw=.true.
|
|
end if
|
|
|
|
if (aliw) then
|
|
allocate(iwork(liwork),stat=info)
|
|
if(info.ne.0) then
|
|
info=4010
|
|
ch_err='psb_realloc'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
else
|
|
iwork => work
|
|
endif
|
|
|
|
iwork(1)=0.d0
|
|
|
|
if (present(d)) then
|
|
lld = size(d)
|
|
id => d
|
|
else
|
|
lld=1
|
|
allocate(id(1))
|
|
id=1.d0
|
|
end if
|
|
|
|
! checking for matrix correctness
|
|
call psb_chkmat(m,m,ia,ja,desc_a,info,iia,jja)
|
|
! checking for vectors correctness
|
|
if (info == 0) &
|
|
& call psb_chkvect(m,ik,size(x),ix,jx,desc_a,info,iix,jjx)
|
|
if (info == 0)&
|
|
& call psb_chkvect(m,ik,size(y),iy,jy,desc_a,info,iiy,jjy)
|
|
if(info.ne.0) then
|
|
info=4010
|
|
ch_err='psb_chkvect/mat'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
if(ja.ne.ix) then
|
|
! this case is not yet implemented
|
|
info = 3030
|
|
end if
|
|
|
|
if((iix.ne.1).or.(iiy.ne.1)) then
|
|
! this case is not yet implemented
|
|
info = 3040
|
|
end if
|
|
|
|
if(info.ne.0) then
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
end if
|
|
|
|
! Perform local triangular system solve
|
|
xp => x(iix:lldx)
|
|
yp => y(iiy:lldy)
|
|
call psb_cssm(alpha,a,xp,beta,yp,info,unitd=lunitd,d=id,trans=itrans)
|
|
|
|
if(info.ne.0) then
|
|
info = 4010
|
|
ch_err='dcssm'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
! update overlap elements
|
|
if(lchoice.gt.0) then
|
|
call psi_swapdata(ior(psb_swap_send_,psb_swap_recv_),&
|
|
& done,yp,desc_a,iwork,info)
|
|
|
|
i=0
|
|
! switch on update type
|
|
select case (lchoice)
|
|
case(psb_square_root_)
|
|
do while(desc_a%ovrlap_elem(i).ne.-ione)
|
|
y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_)) =&
|
|
& y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_))/&
|
|
& sqrt(real(desc_a%ovrlap_elem(i+psb_n_dom_ovr_)))
|
|
i = i+2
|
|
end do
|
|
case(psb_avg_)
|
|
do while(desc_a%ovrlap_elem(i).ne.-ione)
|
|
y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_)) =&
|
|
& y(desc_a%ovrlap_elem(i+psb_ovrlp_elem_))/&
|
|
& real(desc_a%ovrlap_elem(i+psb_n_dom_ovr_))
|
|
i = i+2
|
|
end do
|
|
case(psb_sum_)
|
|
! do nothing
|
|
case default
|
|
! wrong value for choice argument
|
|
info = 70
|
|
int_err=(/10,lchoice,0,0,0/)
|
|
call psb_errpush(info,name,i_err=int_err)
|
|
goto 9999
|
|
end select
|
|
end if
|
|
|
|
if (aliw) deallocate(iwork)
|
|
if(.not.present(d)) deallocate(id)
|
|
|
|
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_dspsv
|
|
|