!!$ 
!!$              Parallel Sparse BLAS  version 3.0
!!$    (C) Copyright 2006, 2007, 2008, 2009, 2010, 2012
!!$                       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  psi_sovrl_saver1(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_sovrl_saver1
  use psb_realloc_mod

  implicit none

  real(psb_spk_), intent(inout)  :: x(:)
  real(psb_spk_), allocatable    :: xs(:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_sovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx   = desc_a%ovrlap_elem(i,1)
    xs(i) = x(idx)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_sovrl_saver1

subroutine  psi_sovrl_saver2(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_sovrl_saver2
  use psb_realloc_mod

  implicit none

  real(psb_spk_), intent(inout)  :: x(:,:)
  real(psb_spk_), allocatable    :: xs(:,:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz, nc
  character(len=20) :: name, ch_err

  name='psi_sovrl_saver2'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  nc  = size(x,2)
  call psb_realloc(isz,nc,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx     = desc_a%ovrlap_elem(i,1)
    xs(i,:) = x(idx,:)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_sovrl_saver2


subroutine  psi_dovrl_saver1(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_dovrl_saver1
  use psb_realloc_mod

  implicit none

  real(psb_dpk_), intent(inout)  :: x(:)
  real(psb_dpk_), allocatable    :: xs(:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_dovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx   = desc_a%ovrlap_elem(i,1)
    xs(i) = x(idx)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_dovrl_saver1


subroutine  psi_dovrl_saver2(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_dovrl_saver2
  use psb_realloc_mod

  implicit none

  real(psb_dpk_), intent(inout)  :: x(:,:)
  real(psb_dpk_), allocatable    :: xs(:,:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz, nc
  character(len=20) :: name, ch_err

  name='psi_dovrl_saver2'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  nc  = size(x,2)
  call psb_realloc(isz,nc,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx     = desc_a%ovrlap_elem(i,1)
    xs(i,:) = x(idx,:)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_dovrl_saver2

subroutine  psi_covrl_saver1(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_covrl_saver1
  use psb_realloc_mod

  implicit none

  complex(psb_spk_), intent(inout)  :: x(:)
  complex(psb_spk_), allocatable    :: xs(:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_covrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx   = desc_a%ovrlap_elem(i,1)
    xs(i) = x(idx)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_covrl_saver1


subroutine  psi_covrl_saver2(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_covrl_saver2
  use psb_realloc_mod

  implicit none

  complex(psb_spk_), intent(inout)  :: x(:,:)
  complex(psb_spk_), allocatable    :: xs(:,:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz, nc
  character(len=20) :: name, ch_err

  name='psi_covrl_saver2'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  nc  = size(x,2)
  call psb_realloc(isz,nc,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx     = desc_a%ovrlap_elem(i,1)
    xs(i,:) = x(idx,:)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_covrl_saver2


subroutine  psi_zovrl_saver1(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_zovrl_saver1

  use psb_realloc_mod

  implicit none

  complex(psb_dpk_), intent(inout)  :: x(:)
  complex(psb_dpk_), allocatable    :: xs(:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_zovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx   = desc_a%ovrlap_elem(i,1)
    xs(i) = x(idx)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_zovrl_saver1


subroutine  psi_zovrl_saver2(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_zovrl_saver2

  use psb_realloc_mod

  implicit none

  complex(psb_dpk_), intent(inout)  :: x(:,:)
  complex(psb_dpk_), allocatable    :: xs(:,:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz, nc
  character(len=20) :: name, ch_err

  name='psi_zovrl_saver2'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  nc  = size(x,2)
  call psb_realloc(isz,nc,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx     = desc_a%ovrlap_elem(i,1)
    xs(i,:) = x(idx,:)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_zovrl_saver2


subroutine  psi_iovrl_saver1(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_iovrl_saver1

  use psb_realloc_mod

  implicit none

  integer(psb_ipk_), intent(inout)  :: x(:)
  integer(psb_ipk_), allocatable    :: xs(:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_iovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx   = desc_a%ovrlap_elem(i,1)
    xs(i) = x(idx)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_iovrl_saver1

subroutine  psi_iovrl_saver2(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_iovrl_saver2
  use psb_desc_mod
  use psb_const_mod
  use psb_error_mod
  use psb_realloc_mod
  use psb_penv_mod
  implicit none

  integer(psb_ipk_), intent(inout)  :: x(:,:)
  integer(psb_ipk_), allocatable    :: xs(:,:)
  type(psb_desc_type), intent(in)  :: desc_a
  integer(psb_ipk_), intent(out)             :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz, nc
  character(len=20) :: name, ch_err

  name='psi_iovrl_saver2'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  nc  = size(x,2)
  call psb_realloc(isz,nc,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif

  do i=1, isz
    idx     = desc_a%ovrlap_elem(i,1)
    xs(i,:) = x(idx,:)
  end do

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_iovrl_saver2



subroutine  psi_iovrl_save_vect(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_iovrl_save_vect
  use psb_realloc_mod
  use psb_i_base_vect_mod

  implicit none

  class(psb_i_base_vect_type)     :: x
  integer(psb_ipk_), allocatable     :: xs(:)
  type(psb_desc_type), intent(in) :: desc_a
  integer(psb_ipk_), intent(out)            :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_iovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif
  
  call x%gth(isz,desc_a%ovrlap_elem(:,1),xs)

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_iovrl_save_vect

subroutine  psi_sovrl_save_vect(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_sovrl_save_vect
  use psb_realloc_mod
  use psb_s_base_vect_mod

  implicit none

  class(psb_s_base_vect_type)     :: x
  real(psb_spk_), allocatable     :: xs(:)
  type(psb_desc_type), intent(in) :: desc_a
  integer(psb_ipk_), intent(out)            :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_sovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif
  
  call x%gth(isz,desc_a%ovrlap_elem(:,1),xs)

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_sovrl_save_vect

subroutine  psi_dovrl_save_vect(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_dovrl_save_vect
  use psb_realloc_mod
  use psb_d_base_vect_mod

  implicit none

  class(psb_d_base_vect_type)     :: x
  real(psb_dpk_), allocatable     :: xs(:)
  type(psb_desc_type), intent(in) :: desc_a
  integer(psb_ipk_), intent(out)            :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_dovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif
  
  call x%gth(isz,desc_a%ovrlap_elem(:,1),xs)

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_dovrl_save_vect

subroutine  psi_covrl_save_vect(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_covrl_save_vect
  use psb_realloc_mod
  use psb_c_base_vect_mod

  implicit none

  class(psb_c_base_vect_type)     :: x
  complex(psb_spk_), allocatable     :: xs(:)
  type(psb_desc_type), intent(in) :: desc_a
  integer(psb_ipk_), intent(out)            :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_sovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif
  
  call x%gth(isz,desc_a%ovrlap_elem(:,1),xs)

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_covrl_save_vect

subroutine  psi_zovrl_save_vect(x,xs,desc_a,info)
  use psi_mod, psi_protect_name =>   psi_zovrl_save_vect
  use psb_realloc_mod
  use psb_z_base_vect_mod

  implicit none

  class(psb_z_base_vect_type)     :: x
  complex(psb_dpk_), allocatable  :: xs(:)
  type(psb_desc_type), intent(in) :: desc_a
  integer(psb_ipk_), intent(out)            :: info

  ! locals
  integer(psb_ipk_) :: ictxt, np, me, err_act, i, idx, isz
  character(len=20) :: name, ch_err

  name='psi_dovrl_saver1'
  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 == -1) then
    info = psb_err_context_error_
    call psb_errpush(info,name)
    goto 9999
  endif

  isz = size(desc_a%ovrlap_elem,1)
  call psb_realloc(isz,xs,info) 
  if (info /= psb_success_) then 
    info = psb_err_alloc_dealloc_
    call psb_errpush(info,name)
    goto 9999
  endif
  
  call x%gth(isz,desc_a%ovrlap_elem(:,1),xs)

  call psb_erractionrestore(err_act)
  return  

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act == psb_act_abort_) then
    call psb_error(ictxt)
    return
  end if
  return
end subroutine psi_zovrl_save_vect