device_local_interpolation.F90

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module device_local_interpolation
  use num_types, only : rp, c_rp
  use utils, only : neko_error
  use, intrinsic :: iso_c_binding, only : c_ptr, c_int
  implicit none
  private
 
  public :: device_find_rst_legendre
 
#ifdef HAVE_HIP
  interface
     subroutine hip_find_rst_legendre(rst, pt_x, pt_y, pt_z, &
          x_hat, y_hat, z_hat, &
          resx, resy, resz, &
          lx, el_ids, n_pt, tol, conv_pts) &
          bind(c, name='hip_find_rst_legendre')
       use, intrinsic :: iso_c_binding
       use num_types
       implicit none
       type(c_ptr), value :: rst
       type(c_ptr), value :: pt_x, pt_y, pt_z
       type(c_ptr), value :: x_hat, y_hat, z_hat
       type(c_ptr), value :: resx, resy, resz
       type(c_ptr), value :: el_ids, conv_pts
       integer(c_int) :: lx, n_pt
       real(c_rp) :: tol
     end subroutine hip_find_rst_legendre
 
  end interface
#elif HAVE_CUDA
  interface
     subroutine cuda_find_rst_legendre(rst, pt_x, pt_y, pt_z, &
          x_hat, y_hat, z_hat, &
          resx, resy, resz, &
          lx, el_ids, n_pt, tol, conv_pts) &
          bind(c, name='cuda_find_rst_legendre')
       use, intrinsic :: iso_c_binding
       use num_types
       implicit none
       type(c_ptr), value :: rst
       type(c_ptr), value :: pt_x, pt_y, pt_z
       type(c_ptr), value :: x_hat, y_hat, z_hat
       type(c_ptr), value :: resx, resy, resz
       type(c_ptr), value :: el_ids, conv_pts
       integer(c_int) :: lx, n_pt
       real(c_rp) :: tol
     end subroutine cuda_find_rst_legendre
  end interface
#elif HAVE_OPENCL
  interface
     subroutine opencl_find_rst_legendre(rst, pt_x, pt_y, pt_z, &
          x_hat, y_hat, z_hat, &
          resx, resy, resz, &
          lx, el_ids, n_pt, tol, conv_pts) &
          bind(c, name='opencl_find_rst_legendre')
       use, intrinsic :: iso_c_binding
       use num_types
       implicit none
       type(c_ptr), value :: rst
       type(c_ptr), value :: pt_x, pt_y, pt_z
       type(c_ptr), value :: x_hat, y_hat, z_hat
       type(c_ptr), value :: resx, resy, resz
       type(c_ptr), value :: el_ids, conv_pts
       integer(c_int) :: lx, n_pt
       real(c_rp) :: tol
     end subroutine opencl_find_rst_legendre
  end interface
#endif
 
contains
 
  subroutine device_find_rst_legendre(rst_d, pt_x_d, pt_y_d, pt_z_d, &
       x_hat_d, y_hat_d, z_hat_d, &
       resx_d, resy_d, resz_d, &
       lx, el_ids_d, n_pts, tol, conv_pts_d)
    type(c_ptr) :: rst_d, pt_x_d, pt_y_d, pt_z_d
    type(c_ptr) :: x_hat_d, y_hat_d, z_hat_d
    type(c_ptr) :: resx_d, resy_d, resz_d
    type(c_ptr) :: el_ids_d, conv_pts_d
    integer :: lx, n_pts
    real(kind=c_rp) :: tol
 
#ifdef HAVE_HIP
    call hip_find_rst_legendre(rst_d, pt_x_d, pt_y_d, pt_z_d, &
         x_hat_d, y_hat_d, z_hat_d, &
         resx_d, resy_d, resz_d, &
         lx, el_ids_d, n_pts, tol, conv_pts_d)
#elif HAVE_CUDA
    call cuda_find_rst_legendre(rst_d, pt_x_d, pt_y_d, pt_z_d, &
         x_hat_d, y_hat_d, z_hat_d, &
         resx_d, resy_d, resz_d, &
         lx, el_ids_d, n_pts, tol, conv_pts_d)
#elif HAVE_OPENCL
    call opencl_find_rst_legendre(rst_d, pt_x_d, pt_y_d, pt_z_d, &
         x_hat_d, y_hat_d, z_hat_d, &
         resx_d, resy_d, resz_d, &
         lx, el_ids_d, n_pts, tol, conv_pts_d)
#else
    call neko_error('No device backend configured')
#endif
 
  end subroutine device_find_rst_legendre
 
end module device_local_interpolation