psblas3/base/tools/psb_dasb.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: psb_dasb.f90
!
! Subroutine: psb_dasb
!    Assembles a dense matrix for PSBLAS routines.
!    Since the allocation may have been called with the desciptor 
!    in the build state we make sure that X has a number of rows 
!    allowing for the halo indices, reallocating if necessary. 
!    We also call the halo routine for good measure.
! 
! Arguments: 
!    x(:,:)  - real,allocatable        The matrix to be assembled.
!    desc_a  - type(<psb_desc_type>).  The communication descriptor.
!    info    - integer.                return code
subroutine psb_dasb(x, desc_a, info)
  !....assembly dense matrix x .....
  use psb_descriptor_type
  use psb_const_mod
  use psb_comm_mod
  use psb_error_mod
  use psb_realloc_mod
  use psb_penv_mod
  implicit none

  type(psb_desc_type), intent(in) ::  desc_a
  real(kind(1.d0)), allocatable, intent(inout)       ::  x(:,:)
  integer, intent(out)            ::  info

  ! local variables
  integer :: ictxt,np,me,nrow,ncol, err_act
  integer :: i1sz, i2sz
  real(kind(1.d0)),parameter    :: one=1
  logical, parameter :: debug=.false.
  character(len=20)   :: name, ch_err

  if(psb_get_errstatus() /= 0) return 
  info=0
  name='psb_dasb'
  call psb_erractionsave(err_act)

  if ((.not.allocated(desc_a%matrix_data))) then
    info=3110
    call psb_errpush(info,name)
    goto 9999
  endif

  ictxt   = psb_cd_get_context(desc_a)

  call psb_info(ictxt, me, np)


  if (debug) write(*,*) 'asb start: ',np,me,&
       & psb_cd_get_dectype(desc_a)
  !     ....verify blacs grid correctness..
  if (np == -1) then
    info = 2010
    call psb_errpush(info,name)
    goto 9999
  else if (.not.psb_is_asb_desc(desc_a)) then
    if (debug) write(*,*) 'asb error ',&
         & psb_cd_get_dectype(desc_a)
    info = 3110
    call psb_errpush(info,name)
    goto 9999
  endif

  ! check size
  ictxt = psb_cd_get_context(desc_a)
  nrow  = psb_cd_get_local_rows(desc_a)
  ncol  = psb_cd_get_local_cols(desc_a)
  i1sz = size(x,dim=1)
  i2sz = size(x,dim=2)
  if (debug) write(*,*) 'asb: ',i1sz,i2sz,nrow,ncol

  if (i1sz < ncol) then
    call psb_realloc(ncol,i2sz,x,info)
    if (info /= 0) then
      info=4010
      call psb_errpush(info,name,a_err='psb_realloc')
      goto 9999
    endif
  endif

  ! ..update halo elements..
  call psb_halo(x,desc_a,info)
  if(info /= 0) then
    info=4010
    ch_err='psb_halo'
    call psb_errpush(info,name,a_err=ch_err)
    goto 9999
  end if

  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 psb_dasb


!!$ 
!!$              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_dasb
!    Assembles a dense matrix for PSBLAS routines
!    Since the allocation may have been called with the desciptor 
!    in the build state we make sure that X has a number of rows 
!    allowing for the halo indices, reallocating if necessary. 
!    We also call the halo routine for good measure.
! 
! Arguments: 
!    x(:)    - real,allocatable        The matrix to be assembled.
!    desc_a  - type(<psb_desc_type>).  The communication descriptor.
!    info    - integer.                Return code
subroutine psb_dasbv(x, desc_a, info)
  !....assembly dense matrix x .....
  use psb_descriptor_type
  use psb_const_mod
  use psb_comm_mod
  use psb_error_mod
  use psb_realloc_mod
  use psb_penv_mod
  implicit none

  type(psb_desc_type), intent(in) ::  desc_a
  real(kind(1.d0)), allocatable, intent(inout)   ::  x(:)
  integer, intent(out)        ::  info

  ! local variables
  integer :: ictxt,np,me
  integer :: int_err(5), i1sz,nrow,ncol, err_act
  real(kind(1.d0)),parameter    :: one=1
  logical, parameter :: debug=.false.
  character(len=20)             :: name,ch_err

  info = 0
  int_err(1) = 0
  name = 'psb_dasbv'

  ictxt   = psb_cd_get_context(desc_a)

  call psb_info(ictxt, me, np)

  !     ....verify blacs grid correctness..
  if (np == -1) then
    info = 2010
    call psb_errpush(info,name)
    goto 9999
  else if (.not.psb_is_asb_desc(desc_a)) then
    info = 3110
    call psb_errpush(info,name)
    goto 9999
  endif

  nrow = psb_cd_get_local_rows(desc_a)
  ncol = psb_cd_get_local_cols(desc_a)
  if (debug) write(*,*) name,' sizes: ',nrow,ncol
  i1sz = size(x)
  if (debug) write(*,*) 'dasb: sizes ',i1sz,ncol
  if (i1sz < ncol) then
    call psb_realloc(ncol,x,info)
    if (info /= 0) then           
      info=4010
      call psb_errpush(info,name,a_err='psb_realloc')
      goto 9999
    endif
  endif

  ! ..update halo elements..
  call psb_halo(x,desc_a,info)
  if(info /= 0) then
    info=4010
    ch_err='f90_pshalo'
    call psb_errpush(info,name,a_err=ch_err)
    goto 9999
  end if

  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 psb_dasbv