psblas3/cuda/impl/psb_d_cuda_elg_reallocate_nz.F90

!                Parallel Sparse BLAS   GPU plugin 
!      (C) Copyright 2013
!  
!                         Salvatore Filippone
!                         Alessandro Fanfarillo
!   
!    Redistribution and use in source and binary forms, with or without
!    modification, are permitted provided that the following conditions
!    are met:
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!         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
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!      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
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!   
  
subroutine  psb_d_cuda_elg_reallocate_nz(nz,a) 
  
  use psb_base_mod
  use elldev_mod
  use psb_vectordev_mod
  use psb_d_cuda_elg_mat_mod, psb_protect_name => psb_d_cuda_elg_reallocate_nz
  implicit none 
  integer(psb_ipk_), intent(in) :: nz
  class(psb_d_cuda_elg_sparse_mat), intent(inout) :: a
  integer(psb_ipk_) :: m, nzrm,ld
  Integer(Psb_ipk_) :: err_act, info
  character(len=20)  :: name='d_cuda_elg_reallocate_nz'
  logical, parameter :: debug=.false.

  call psb_erractionsave(err_act)

  !
  ! What should this really do??? 
  ! 
  if (a%is_dev()) call a%sync()
  m    = a%get_nrows()
  nzrm = (max(nz,ione)+m-1)/m
  ld = size(a%ja,1)
  call psb_realloc(ld,nzrm,a%ja,info)
  if (info == psb_success_) call psb_realloc(ld,nzrm,a%val,info)
  if (info /= psb_success_) then 
    call psb_errpush(psb_err_alloc_dealloc_,name)
    goto 9999
  end if

  call a%to_gpu(info,nzrm=nzrm)
  if (info /= 0) goto 9999

  call psb_erractionrestore(err_act)
  return

9999 call psb_error_handler(err_act)

  return

end subroutine psb_d_cuda_elg_reallocate_nz