psblas3/base/internals/psi_idx_cnv.f90

!!$ 
!!$              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: psi_idx_cnv.f90
!
! Subroutine: psi_idx_cnv1
!   Converts a bunch of indices from global to local numbering. 
!   
! 
! Arguments: 
!    nv       - integer                   Number of indices required 
!    idxin(:) - integer                   Required indices,   overwritten on output.
!    desc     - type(<psb_desc_type>).    The communication descriptor.        
!    info     - integer.                  return code.
!    mask(:)  - logical, optional         Only do the conversion for specific indices.
!    owned    - logical,optional          Restrict to local indices, no halo 
!                                         (default false)
subroutine psi_idx_cnv1(nv,idxin,desc,info,mask,owned)
  use psb_descriptor_type
  use psb_serial_mod
  use psb_const_mod
  use psb_error_mod
  use psb_penv_mod
  use psi_mod, psb_protect_name => psi_idx_cnv1
  implicit none
  integer, intent(in)    :: nv
  integer, intent(inout) ::  idxin(:)
  type(psb_desc_type), intent(in) :: desc
  integer, intent(out) :: info
  logical, intent(in), optional, target :: mask(:)
  logical, intent(in), optional :: owned
  integer :: ictxt,mglob, nglob
  integer                :: np, me
  integer                :: nrow,ncol, err_act
  integer, allocatable   :: idxout(:)
  logical, parameter     :: debug=.false.
  integer, parameter     :: relocsz=200
  character(len=20)      :: name
  logical, pointer       :: mask_(:)
  logical                :: owned_

  info = 0
  name = 'psb_idx_cnv'
  call psb_erractionsave(err_act)

  ictxt   = psb_cd_get_context(desc)
  mglob   = psb_cd_get_global_rows(desc)
  nglob   = psb_cd_get_global_cols(desc)
  nrow    = psb_cd_get_local_rows(desc)
  ncol    = psb_cd_get_local_cols(desc)

  call psb_info(ictxt, me, np)

  if (.not.psb_is_ok_desc(desc)) then 
    info = 3110
    call psb_errpush(info,name)
    goto 9999
  endif

  if (nv < 0) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if
  if (nv == 0) return
  

  if (size(idxin) < nv) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if


  if (present(mask)) then 
    if (size(mask) < nv) then 
      info = 1111
      call psb_errpush(info,name)
      goto 9999
    end if
    mask_ => mask
  else
    allocate(mask_(nv),stat=info)
    if (info /= 0) then 
      info = 4000 
      call psb_errpush(info,name)
      goto 9999
    endif
    mask_ = .true.
  endif

  if (present(owned)) then 
    owned_ = owned
  else
    owned_ = .false.
  endif

  allocate(idxout(nv),stat=info)
  if (info /= 0) then 
    info = 4000 
    call psb_errpush(info,name)
    goto 9999
  endif
  call psi_idx_cnv2(nv,idxin,idxout,desc,info,mask_,owned_)
  idxin(1:nv) = idxout(1:nv)

  deallocate(idxout)

  if (.not.present(mask)) then 
    deallocate(mask_)
  end if

  call psb_erractionrestore(err_act)
  return

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act.eq.psb_act_ret_) then
    return
  else
    call psb_error(ictxt)
  end if
  return

end subroutine psi_idx_cnv1
!!$ 
!!$              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: psi_idx_cnv.f90
!
! Subroutine: psi_idx_cnv2
!   Converts a bunch of indices from global to local numbering. 
!   
! 
! Arguments: 
!    nv        - integer                   Number of indices required 
!    idxin(:)  - integer                   Required indices
!    idxout(:) - integer                   Output values, negative for invalid input.
!    desc      - type(<psb_desc_type>).    The communication descriptor.        
!    info      - integer.                  return code.
!    mask(:)   - logical, optional         Only do the conversion for specific indices.
!    owned     - logical,optional          Restrict to local indices, no halo
!                                          (default false)
subroutine psi_idx_cnv2(nv,idxin,idxout,desc,info,mask,owned)
  use psb_descriptor_type
  use psb_serial_mod
  use psb_const_mod
  use psb_error_mod
  use psb_penv_mod
  use psi_mod, psb_protect_name => psi_idx_cnv2
  implicit none
  integer, intent(in)  :: nv, idxin(:)
  integer, intent(out) :: idxout(:)
  type(psb_desc_type), intent(in) :: desc
  integer, intent(out) :: info
  logical, intent(in), optional, target :: mask(:)
  logical, intent(in), optional :: owned
  integer :: i,ictxt,mglob, nglob
  integer                :: np, me
  integer                :: nrow,ncol, ip, err_act,lip
  logical, parameter     :: debug=.false.
  integer, parameter     :: relocsz=200
  character(len=20)      :: name
  logical, pointer       :: mask_(:)
  logical                :: owned_

  info = 0
  name = 'psb_idx_cnv'
  call psb_erractionsave(err_act)

  ictxt   = psb_cd_get_context(desc)
  mglob   = psb_cd_get_global_rows(desc)
  nglob   = psb_cd_get_global_cols(desc)
  nrow    = psb_cd_get_local_rows(desc)
  ncol    = psb_cd_get_local_cols(desc)

  call psb_info(ictxt, me, np)

  if (.not.psb_is_ok_desc(desc)) then 
    info = 3110
    call psb_errpush(info,name)
    goto 9999
  endif

  if (nv < 0) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if
  if (nv == 0) return

  if (size(idxin) < nv) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if

  if (size(idxout) < nv) then 
    info = 1111
    call psb_errpush(info,name)
    goto 9999
  end if

  if (present(mask)) then 
    if (size(mask) < nv) then 
      info = 1111
      call psb_errpush(info,name)
      goto 9999
    end if
    mask_ => mask
  else
    allocate(mask_(nv),stat=info)
    if (info /= 0) then 
      info = 4000 
      call psb_errpush(info,name)
      goto 9999
    endif
    mask_ = .true.
  endif

  if (present(owned)) then 
    owned_ = owned
  else
    owned_ = .false.
  endif

  !
  ! The input descriptor may be in any state
  !
  if (psb_is_large_desc(desc)) then 
    !
    ! Large descriptor: the size of the index space is such that
    ! we decided not to allocate the glob_to_loc(:) map.
    !
    if (psb_is_bld_desc(desc)) then 
      !
      ! During the build phase of a large descriptor the indices 
      ! are kept in an AVL tree.
      !
      do i = 1, nv
        if (mask_(i)) then 
          ip = idxin(i) 
          if ((ip < 1 ).or.(ip>mglob)) then 
            idxout(i) = -1
            cycle
          endif
          call SearchKeyVal(desc%ptree,ip,lip,info)
          if (owned_) then 
            if (lip<=nrow) then 
              idxout(i) = lip
            else 
              idxout(i) = -1
            endif
          else
            idxout(i) = lip
          endif
        end if
      enddo
    else if (psb_is_asb_desc(desc)) then 
      !
      ! When a large descriptor is assembled the indices 
      ! are kept in a (hashed) list of ordered lists, 
      ! hence psi_inner_cnv does the hashing and binary search.
      !

      if (.not.allocated(desc%hashv)) then 
        write(0,*) 'Inconsistent input to inner_cnv'
      end if
      call psi_inner_cnv(nv,idxin,idxout,psb_hash_mask,desc%hashv,desc%glb_lc)
    end if

  else

    !
    ! Not a large descriptor, so we have  the glob_to_loc(:) map
    ! available. 
    !
    do i = 1, nv
      if (mask_(i)) then 
        ip = idxin(i) 
        if ((ip < 1 ).or.(ip>mglob)) then 
          info = 1133
          call psb_errpush(info,name)
          goto 9999
        endif
        lip = desc%glob_to_loc(ip)
        if (owned_) then 
          if (lip<=nrow) then 
            idxout(i) = lip
          else 
            idxout(i) = -1
          endif
        else
          idxout(i) = lip
        endif
      end if
    enddo
  end if


  if (.not.present(mask)) then 
    deallocate(mask_)
  end if

  call psb_erractionrestore(err_act)
  return

9999 continue
  call psb_erractionrestore(err_act)

  if (err_act.eq.psb_act_ret_) then
    return
  else
    call psb_error(ictxt)
  end if
  return


end subroutine psi_idx_cnv2
!!$ 
!!$              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: psi_idx_cnv.f90
!
! Subroutine: psi_idx_cnvs
!   Converts an index from global to local numbering. 
!   
! 
! Arguments: 
!    idxin     - integer                   Required index   
!    idxout    - integer                   Output value, negative for invalid input.
!    desc      - type(<psb_desc_type>).    The communication descriptor.        
!    info      - integer.                  return code.
!    mask      - logical, optional         Only do the conversion if true.
!    owned     - logical,optional          Restrict to local indices, no halo 
!                                          (default false)
subroutine psi_idx_cnvs(idxin,idxout,desc,info,mask,owned)

  use psi_mod, psb_protect_name => psi_idx_cnvs
  use psb_descriptor_type
  integer, intent(in)  :: idxin
  integer, intent(out) :: idxout
  type(psb_desc_type), intent(in) :: desc
  integer, intent(out) :: info
  logical, intent(in), optional, target :: mask
  logical, intent(in), optional :: owned
  integer  :: iout(1) 
  logical  :: mask_, owned_

  if (present(mask)) then 
    mask_ = mask
  else
    mask_ = .true.
  endif
  if (present(owned)) then 
    owned_ = owned
  else
    owned_ = .true.
  endif
  call psi_idx_cnv(1,(/idxin/),iout,desc,info,(/mask_/),owned_)
  idxout=iout(1)

  return

end subroutine psi_idx_cnvs