device_neumann.F90

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module device_neumann
  use utils, only : neko_error
  use, intrinsic :: iso_c_binding, only : c_int, c_ptr
  implicit none
  private
 
#ifdef HAVE_HIP
  interface
     subroutine hip_neumann_apply_scalar(msk, facet, x, flux, area, &
          lx, m, strm) &
          bind(c, name='hip_neumann_apply_scalar')
       use, intrinsic :: iso_c_binding
       implicit none
       integer(c_int) :: m, lx
       type(c_ptr), value :: msk, facet, x, flux, area, strm
     end subroutine hip_neumann_apply_scalar
  end interface
#elif HAVE_CUDA
  interface
     subroutine cuda_neumann_apply_scalar(msk, facet, x, flux, area, &
          lx, m, strm) &
          bind(c, name='cuda_neumann_apply_scalar')
       use, intrinsic :: iso_c_binding
       implicit none
       integer(c_int) :: m, lx
       type(c_ptr), value :: msk, facet, x, flux, area, strm
     end subroutine cuda_neumann_apply_scalar
  end interface
#elif HAVE_OPENCL
  interface
     subroutine opencl_neumann_apply_scalar(msk, facet, x, flux, area, &
          lx, m, strm) &
          bind(c, name='opencl_neumann_apply_scalar')
       use, intrinsic :: iso_c_binding
       implicit none
       integer(c_int) :: m, lx
       type(c_ptr), value :: msk, facet, x, flux, area, strm
     end subroutine opencl_neumann_apply_scalar
  end interface
#endif
 
  public :: device_neumann_apply_scalar
 
contains
 
  subroutine device_neumann_apply_scalar(msk, facet, x, flux, area, lx, m, strm)
    integer, intent(in) :: m, lx
    type(c_ptr) :: msk, facet, x, flux, area, strm
 
    if (m .lt. 1) return
#ifdef HAVE_HIP
    call hip_neumann_apply_scalar(msk, facet, x, flux, area, lx, m, strm)
#elif HAVE_CUDA
    call cuda_neumann_apply_scalar(msk, facet, x, flux, area, lx, m, strm)
#elif HAVE_OPENCL
    call opencl_neumann_apply_scalar(msk, facet, x, flux, area, lx, m, strm)
#else
    call neko_error('No device backend configured')
#endif
 
  end subroutine device_neumann_apply_scalar
 
end module device_neumann