def test_prolong_vector(tmpdir, f90, f90flags):
    ''' Check that we generate correct code when an inter-grid kernel
    takes a field vector as argument '''
    _, invoke_info = parse(os.path.join(BASE_PATH,
                                        "22.4_intergrid_prolong_vec.f90"),
                           api=API)
    psy = PSyFactory(API).create(invoke_info)
    output = str(psy.gen)
    print output

    if utils.TEST_COMPILE:
        assert utils.code_compiles(API, psy, tmpdir, f90, f90flags)

    assert "TYPE(field_type), intent(inout) :: field1(3)" in output
    assert "TYPE(field_proxy_type) field1_proxy(3)" in output
    # Make sure we always index into the field arrays
    assert " field1%" not in output
    assert " field2%" not in output
    assert ("ncpc_field1_field2, ncell_field1, field1_proxy(1)%data, "
            "field1_proxy(2)%data, field1_proxy(3)%data, field2_proxy(1)%data,"
            " field2_proxy(2)%data, field2_proxy(3)%data, ndf_w1" in output)
    for idx in [1, 2, 3]:
        assert (
            "      IF (field2_proxy({0})%is_dirty(depth=1)) THEN\n"
            "        CALL field2_proxy({0})%halo_exchange(depth=1)\n"
            "      END IF \n".format(idx) in output)
        assert ("field1_proxy({0}) = field1({0})%get_proxy()".format(idx) in
                output)
        assert "CALL field1_proxy({0})%set_dirty()".format(idx) in output
        assert "CALL field1_proxy({0})%set_clean(1)".format(idx) in output
def test_field_qr_deref(tmpdir, f90, f90flags):
    ''' Tests that a call, with a set of fields requiring
    quadrature, produces correct code when the quadrature is supplied as the
    component of a derived type. '''
    _, invoke_info = parse(os.path.join(BASE_PATH,
                                        "1.1.1_single_invoke_qr_deref.f90"),
                           api="dynamo0.3")
    for dist_mem in [True, False]:
        psy = PSyFactory("dynamo0.3",
                         distributed_memory=dist_mem).create(invoke_info)

        if utils.TEST_COMPILE:
            assert utils.code_compiles(API, psy, tmpdir, f90, f90flags)
        gen = str(psy.gen)
        print gen
        assert (
            "    SUBROUTINE invoke_0_testkern_qr_type(f1, f2, m1, a, m2, istp,"
            " qr_data)\n" in gen)
        assert "TYPE(quadrature_xyoz_type), intent(in) :: qr_data" in gen
Пример #3
0
def code_compiles_invalid_api(tmpdir, f90, f90flags):
    ''' Check that utils.code_compiles() reject an unrecognised API '''
    with pytest.raises(utils.CompileError) as excinfo:
        utils.code_compiles("not_an_api", "fake_psy", tmpdir, f90, f90flags)
    assert "Unsupported API in " in str(excinfo)
def test_field_xyoz(tmpdir, f90, f90flags):
    ''' Tests that a call, with a set of fields requiring XYoZ
    quadrature, produces correct code. '''
    _, invoke_info = parse(os.path.join(BASE_PATH,
                                        "1.1.0_single_invoke_xyoz_qr.f90"),
                           api=API)
    psy = PSyFactory(API).create(invoke_info)
    generated_code = str(psy.gen)
    print generated_code

    if utils.TEST_COMPILE:
        assert utils.code_compiles(API, psy, tmpdir, f90, f90flags)

    output_decls = (
        "    SUBROUTINE invoke_0_testkern_qr_type(f1, f2, m1, a, m2, istp,"
        " qr)\n"
        "      USE testkern_qr, ONLY: testkern_qr_code\n"
        "      USE quadrature_xyoz_mod, ONLY: quadrature_xyoz_type, "
        "quadrature_xyoz_proxy_type\n"
        "      USE function_space_mod, ONLY: BASIS, DIFF_BASIS\n"
        "      USE mesh_mod, ONLY: mesh_type\n"
        "      REAL(KIND=r_def), intent(in) :: a\n"
        "      INTEGER, intent(in) :: istp\n"
        "      TYPE(field_type), intent(inout) :: f1\n"
        "      TYPE(field_type), intent(in) :: f2, m1, m2\n"
        "      TYPE(quadrature_xyoz_type), intent(in) :: qr\n"
        "      INTEGER cell\n"
        "      REAL(KIND=r_def), allocatable :: basis_w1_qr(:,:,:,:), "
        "basis_w3_qr(:,:,:,:), diff_basis_w2_qr(:,:,:,:), "
        "diff_basis_w3_qr(:,:,:,:)\n"
        "      INTEGER dim_w1, dim_w3, diff_dim_w2, diff_dim_w3\n"
        "      REAL(KIND=r_def), pointer :: weights_xy_qr(:) => null(), "
        "weights_z_qr(:) => null()\n"
        "      INTEGER np_xy_qr, np_z_qr\n"
        "      INTEGER ndf_w1, undf_w1, ndf_w2, undf_w2, ndf_w3, undf_w3\n"
        "      INTEGER nlayers\n"
        "      TYPE(field_proxy_type) f1_proxy, f2_proxy, m1_proxy, m2_proxy\n"
        "      TYPE(quadrature_xyoz_proxy_type) qr_proxy\n"
        "      INTEGER, pointer :: map_w2(:,:) => null(), "
        "map_w3(:,:) => null(), map_w1(:,:) => null()\n"
        "      TYPE(mesh_type), pointer :: mesh => null()\n")
    assert output_decls in generated_code
    init_output = ("      !\n"
                   "      ! Initialise field and/or operator proxies\n"
                   "      !\n"
                   "      f1_proxy = f1%get_proxy()\n"
                   "      f2_proxy = f2%get_proxy()\n"
                   "      m1_proxy = m1%get_proxy()\n"
                   "      m2_proxy = m2%get_proxy()\n"
                   "      !\n"
                   "      ! Initialise number of layers\n"
                   "      !\n"
                   "      nlayers = f1_proxy%vspace%get_nlayers()\n"
                   "      !\n"
                   "      ! Create a mesh object\n"
                   "      !\n"
                   "      mesh => f1%get_mesh()\n"
                   "      !\n"
                   "      ! Look-up dofmaps for each function space\n"
                   "      !\n"
                   "      map_w2 => f2_proxy%vspace%get_whole_dofmap()\n"
                   "      map_w3 => m2_proxy%vspace%get_whole_dofmap()\n"
                   "      map_w1 => f1_proxy%vspace%get_whole_dofmap()\n"
                   "      !\n"
                   "      ! Initialise number of DoFs for w1\n"
                   "      !\n"
                   "      ndf_w1 = f1_proxy%vspace%get_ndf()\n"
                   "      undf_w1 = f1_proxy%vspace%get_undf()\n"
                   "      !\n"
                   "      ! Initialise number of DoFs for w2\n"
                   "      !\n"
                   "      ndf_w2 = f2_proxy%vspace%get_ndf()\n"
                   "      undf_w2 = f2_proxy%vspace%get_undf()\n"
                   "      !\n"
                   "      ! Initialise number of DoFs for w3\n"
                   "      !\n"
                   "      ndf_w3 = m2_proxy%vspace%get_ndf()\n"
                   "      undf_w3 = m2_proxy%vspace%get_undf()\n"
                   "      !\n"
                   "      ! Look-up quadrature variables\n"
                   "      !\n"
                   "      qr_proxy = qr%get_quadrature_proxy()\n"
                   "      np_xy_qr = qr_proxy%np_xy\n"
                   "      np_z_qr = qr_proxy%np_z\n"
                   "      weights_xy_qr => qr_proxy%weights_xy\n"
                   "      weights_z_qr => qr_proxy%weights_z\n")
    assert init_output in generated_code
    compute_output = (
        "      !\n"
        "      ! Allocate basis arrays\n"
        "      !\n"
        "      dim_w1 = f1_proxy%vspace%get_dim_space()\n"
        "      ALLOCATE (basis_w1_qr(dim_w1, ndf_w1, np_xy_qr, np_z_qr))\n"
        "      dim_w3 = m2_proxy%vspace%get_dim_space()\n"
        "      ALLOCATE (basis_w3_qr(dim_w3, ndf_w3, np_xy_qr, np_z_qr))\n"
        "      !\n"
        "      ! Allocate differential basis arrays\n"
        "      !\n"
        "      diff_dim_w2 = f2_proxy%vspace%get_dim_space_diff()\n"
        "      ALLOCATE (diff_basis_w2_qr(diff_dim_w2, ndf_w2, np_xy_qr, "
        "np_z_qr))\n"
        "      diff_dim_w3 = m2_proxy%vspace%get_dim_space_diff()\n"
        "      ALLOCATE (diff_basis_w3_qr(diff_dim_w3, ndf_w3, np_xy_qr, "
        "np_z_qr))\n"
        "      !\n"
        "      ! Compute basis arrays\n"
        "      !\n"
        "      CALL qr%compute_function(BASIS, f1_proxy%vspace, dim_w1, "
        "ndf_w1, basis_w1_qr)\n"
        "      CALL qr%compute_function(BASIS, m2_proxy%vspace, dim_w3, "
        "ndf_w3, basis_w3_qr)\n"
        "      !\n"
        "      ! Compute differential basis arrays\n"
        "      !\n"
        "      CALL qr%compute_function(DIFF_BASIS, f2_proxy%vspace, "
        "diff_dim_w2, ndf_w2, diff_basis_w2_qr)\n"
        "      CALL qr%compute_function(DIFF_BASIS, m2_proxy%vspace, "
        "diff_dim_w3, ndf_w3, diff_basis_w3_qr)\n"
        "      !\n"
        "      ! Call kernels and communication routines\n"
        "      !\n"
        "      IF (f2_proxy%is_dirty(depth=1)) THEN\n"
        "        CALL f2_proxy%halo_exchange(depth=1)\n"
        "      END IF \n"
        "      !\n"
        "      IF (m1_proxy%is_dirty(depth=1)) THEN\n"
        "        CALL m1_proxy%halo_exchange(depth=1)\n"
        "      END IF \n"
        "      !\n"
        "      IF (m2_proxy%is_dirty(depth=1)) THEN\n"
        "        CALL m2_proxy%halo_exchange(depth=1)\n"
        "      END IF \n"
        "      !\n"
        "      DO cell=1,mesh%get_last_halo_cell(1)\n"
        "        !\n"
        "        CALL testkern_qr_code(nlayers, f1_proxy%data, f2_proxy%data, "
        "m1_proxy%data, a, m2_proxy%data, istp, ndf_w1, undf_w1, "
        "map_w1(:,cell), basis_w1_qr, ndf_w2, undf_w2, map_w2(:,cell), "
        "diff_basis_w2_qr, ndf_w3, undf_w3, map_w3(:,cell), basis_w3_qr, "
        "diff_basis_w3_qr, np_xy_qr, np_z_qr, weights_xy_qr, weights_z_qr)\n"
        "      END DO \n"
        "      !\n"
        "      ! Set halos dirty/clean for fields modified in the above loop\n"
        "      !\n"
        "      CALL f1_proxy%set_dirty()\n"
        "      !\n"
        "      !\n"
        "      ! Deallocate basis arrays\n"
        "      !\n"
        "      DEALLOCATE (diff_basis_w2_qr, basis_w1_qr, basis_w3_qr, "
        "diff_basis_w3_qr)\n"
        "      !\n"
        "    END SUBROUTINE invoke_0_testkern_qr_type")
    assert compute_output in generated_code
def test_restrict_prolong_chain(tmpdir, f90, f90flags):
    ''' Test when we have a single invoke containing a chain of
    restrictions and prolongations '''
    _, invoke_info = parse(os.path.join(BASE_PATH,
                                        "22.2_intergrid_3levels.f90"),
                           api=API)
    for distmem in [False, True]:
        psy = PSyFactory(API, distributed_memory=distmem).create(invoke_info)
        output = str(psy.gen)

        if utils.TEST_COMPILE:
            assert utils.code_compiles(API, psy, tmpdir, f90, f90flags)

        expected = (
            "      ! Look-up mesh objects and loop limits for inter-grid "
            "kernels\n"
            "      !\n"
            "      mesh_fld_m => fld_m%get_mesh()\n"
            "      mesh_fld_c => fld_c%get_mesh()\n"
            "      mmap_fld_m_fld_c => mesh_fld_c%get_mesh_map(mesh_fld_m)\n"
            "      cell_map_fld_c => mmap_fld_m_fld_c%get_whole_cell_map()\n")
        assert expected in output

        if distmem:
            expected = (
                "      ncell_fld_m = mesh_fld_m%get_last_halo_cell(depth=2)\n"
                "      ncpc_fld_m_fld_c = mmap_fld_m_fld_c%"
                "get_ntarget_cells_per_source_cell()\n"
                "      mesh_fld_f => fld_f%get_mesh()\n"
                "      mmap_fld_f_fld_m => mesh_fld_m%get_mesh_map"
                "(mesh_fld_f)\n"
                "      cell_map_fld_m => mmap_fld_f_fld_m%get_whole_cell_map"
                "()\n"
                "      ncell_fld_f = mesh_fld_f%get_last_halo_cell(depth=2)\n"
                "      ncpc_fld_f_fld_m = mmap_fld_f_fld_m%"
                "get_ntarget_cells_per_source_cell()\n")
        else:
            expected = (
                "      ncell_fld_m = fld_m_proxy%vspace%get_ncell()\n"
                "      ncpc_fld_m_fld_c = mmap_fld_m_fld_c%"
                "get_ntarget_cells_per_source_cell()\n"
                "      mesh_fld_f => fld_f%get_mesh()\n"
                "      mmap_fld_f_fld_m => mesh_fld_m%get_mesh_map"
                "(mesh_fld_f)\n"
                "      cell_map_fld_m => mmap_fld_f_fld_m%get_whole_cell_map"
                "()\n"
                "      ncell_fld_f = fld_f_proxy%vspace%get_ncell()\n"
                "      ncpc_fld_f_fld_m = mmap_fld_f_fld_m%get_ntarget_cells_"
                "per_source_cell()\n")
        assert expected in output

        # Check that we haven't got duplicated output
        assert output.count("mesh_fld_m => fld_m%get_mesh") == 1
        assert output.count("ncell_fld_m = ") == 1
        assert output.count("ncell_fld_f = ") == 1

        if distmem:
            # Have a potential halo exchange before 1st prolong
            expected = (
                "      IF (fld_c_proxy%is_dirty(depth=1)) THEN\n"
                "        CALL fld_c_proxy%halo_exchange(depth=1)\n"
                "      END IF \n"
                "      !\n"
                "      DO cell=1,mesh_fld_c%get_last_halo_cell(1)\n")
            assert expected in output
            # Since we loop into L1 halo of the coarse mesh, the L1 halo
            # of the fine(r) mesh will now be clean. Therefore, no halo
            # swap before the next prolongation
            expected = (
                "      ! Set halos dirty/clean for fields modified in the "
                "above loop\n"
                "      !\n"
                "      CALL fld_m_proxy%set_dirty()\n"
                "      CALL fld_m_proxy%set_clean(1)\n"
                "      !\n"
                "      DO cell=1,mesh_fld_m%get_last_halo_cell(1)\n")
            assert expected in output
            # Again the L1 halo for fld_f will now be clean but for restriction
            # we need the L2 halo to be clean. There's a set_clean(1) for
            # fld_f because the above loop over the coarser fld_m will go
            # into the L2 halo of fld_f. However, it is a continuous field
            # so only the L1 halo will actually be clean.
            expected = ("      CALL fld_f_proxy%set_dirty()\n"
                        "      CALL fld_f_proxy%set_clean(1)\n"
                        "      !\n"
                        "      CALL fld_f_proxy%halo_exchange(depth=2)\n"
                        "      !\n"
                        "      DO cell=1,mesh_fld_m%get_last_halo_cell(1)\n"
                        "        !\n"
                        "        CALL restrict_kernel_code")
            assert expected in output
            # For the final restriction we need the L2 halo of fld_m to be
            # clean. There's no set_clean() call on fld_m because it is
            # only updated out to the L1 halo and it is a continuous field
            # so the shared dofs in the L1 halo will still be dirty.
            expected = ("      CALL fld_m_proxy%set_dirty()\n"
                        "      !\n"
                        "      CALL fld_m_proxy%halo_exchange(depth=2)\n"
                        "      !\n"
                        "      DO cell=1,mesh_fld_c%get_last_halo_cell(1)\n"
                        "        !\n"
                        "        CALL restrict_kernel_code")
            assert expected in output
        else:
            expected = (
                "      DO cell=1,fld_c_proxy%vspace%get_ncell()\n"
                "        !\n"
                "        CALL prolong_kernel_code(nlayers, cell_map_fld_c(:,"
                "cell), ncpc_fld_m_fld_c, ncell_fld_m, fld_m_proxy%data, "
                "fld_c_proxy%data, ndf_w1, undf_w1, map_w1, undf_w2, "
                "map_w2(:,cell))\n"
                "      END DO \n"
                "      DO cell=1,fld_m_proxy%vspace%get_ncell()\n"
                "        !\n"
                "        CALL prolong_kernel_code(nlayers, cell_map_fld_m(:,"
                "cell), ncpc_fld_f_fld_m, ncell_fld_f, fld_f_proxy%data, "
                "fld_m_proxy%data, ndf_w1, undf_w1, map_w1, undf_w2, "
                "map_w2(:,cell))\n"
                "      END DO \n"
                "      DO cell=1,fld_m_proxy%vspace%get_ncell()\n"
                "        !\n"
                "        CALL restrict_kernel_code(nlayers, cell_map_fld_m(:,"
                "cell), ncpc_fld_f_fld_m, ncell_fld_f, fld_m_proxy%data, "
                "fld_f_proxy%data, undf_any_space_1_fld_m, "
                "map_any_space_1_fld_m(:,cell), ndf_any_space_2_fld_f, "
                "undf_any_space_2_fld_f, map_any_space_2_fld_f)\n"
                "      END DO \n"
                "      DO cell=1,fld_c_proxy%vspace%get_ncell()\n"
                "        !\n"
                "        CALL restrict_kernel_code(nlayers, cell_map_fld_c(:,"
                "cell), ncpc_fld_m_fld_c, ncell_fld_m, fld_c_proxy%data, "
                "fld_m_proxy%data, undf_any_space_1_fld_c, "
                "map_any_space_1_fld_c(:,cell), ndf_any_space_2_fld_m, "
                "undf_any_space_2_fld_m, map_any_space_2_fld_m)\n")
            assert expected in output
def test_field_restrict(tmpdir, f90, f90flags):
    ''' Test that we generate correct code for an invoke containing a
    single restriction operation (read from find, write to coarse) '''
    _, invoke_info = parse(os.path.join(BASE_PATH,
                                        "22.1_intergrid_restrict.f90"),
                           api=API)
    for distmem in [False, True]:
        psy = PSyFactory(API, distributed_memory=distmem).create(invoke_info)
        output = str(psy.gen)
        print output

        if utils.TEST_COMPILE:
            assert utils.code_compiles(API, psy, tmpdir, f90, f90flags)

        defs = (
            "      USE restrict_kernel_mod, ONLY: restrict_kernel_code\n"
            "      USE mesh_map_mod, ONLY: mesh_map_type\n"
            "      USE mesh_mod, ONLY: mesh_type\n"
            "      TYPE(field_type), intent(inout) :: field1\n"
            "      TYPE(field_type), intent(in) :: field2\n")
        assert defs in output

        defs2 = (
            "      INTEGER nlayers\n"
            "      TYPE(field_proxy_type) field1_proxy, field2_proxy\n"
            "      INTEGER, pointer :: map_any_space_2_field2(:,:) => null(), "
            "map_any_space_1_field1(:,:) => null()\n"
            "      INTEGER ncell_field2, ncpc_field2_field1\n"
            "      INTEGER, pointer :: cell_map_field1(:,:) => null()\n"
            "      TYPE(mesh_map_type), pointer :: mmap_field2_field1 => "
            "null()\n"
            "      TYPE(mesh_type), pointer :: mesh_field2 => null()\n"
            "      TYPE(mesh_type), pointer :: mesh_field1 => null()\n")
        assert defs2 in output

        inits = (
            "      !\n"
            "      ! Look-up mesh objects and loop limits for inter-grid "
            "kernels\n"
            "      !\n"
            "      mesh_field2 => field2%get_mesh()\n"
            "      mesh_field1 => field1%get_mesh()\n"
            "      mmap_field2_field1 => mesh_field1%get_mesh_map("
            "mesh_field2)\n"
            "      cell_map_field1 => mmap_field2_field1%"
            "get_whole_cell_map()\n")
        if distmem:
            inits += ("      ncell_field2 = mesh_field2%"
                      "get_last_halo_cell(depth=2)\n")
        else:
            inits += ("      ncell_field2 = field2_proxy%vspace%"
                      "get_ncell()\n")
        inits += (
            "      ncpc_field2_field1 = mmap_field2_field1%"
            "get_ntarget_cells_per_source_cell()\n"
            "      !\n"
            "      ! Look-up dofmaps for each function space\n"
            "      !\n"
            "      map_any_space_2_field2 => field2_proxy%vspace%"
            "get_whole_dofmap()\n"
            "      map_any_space_1_field1 => field1_proxy%vspace%"
            "get_whole_dofmap()\n")
        assert inits in output

        if distmem:
            # We write out to the L1 halo on the coarse mesh which means
            # we require up-to-date values out to the L2 halo on the fine.
            # Since we are incrementing the coarse field we also need
            # up-to-date values for it in the L1 halo.
            halo_exchs = (
                "      ! Call kernels and communication routines\n"
                "      !\n"
                "      IF (field1_proxy%is_dirty(depth=1)) THEN\n"
                "        CALL field1_proxy%halo_exchange(depth=1)\n"
                "      END IF \n"
                "      !\n"
                "      IF (field2_proxy%is_dirty(depth=2)) THEN\n"
                "        CALL field2_proxy%halo_exchange(depth=2)\n"
                "      END IF \n"
                "      !\n"
                "      DO cell=1,mesh_field1%get_last_halo_cell(1)\n")
            assert halo_exchs in output

        # We pass the whole dofmap for the fine mesh (we are reading from).
        # This is associated with the second kernel argument.
        kern_call = (
            "        !\n"
            "        CALL restrict_kernel_code(nlayers, "
            "cell_map_field1(:,cell), ncpc_field2_field1, ncell_field2, "
            "field1_proxy%data, field2_proxy%data, "
            "undf_any_space_1_field1, map_any_space_1_field1(:,cell), "
            "ndf_any_space_2_field2, undf_any_space_2_field2, "
            "map_any_space_2_field2)\n"
            "      END DO \n"
            "      !\n")
        assert kern_call in output

        if distmem:
            set_dirty = "      CALL field1_proxy%set_dirty()\n"
            assert set_dirty in output
def test_field_prolong(tmpdir, f90, f90flags):
    ''' Check that we generate correct psy-layer code for an invoke
    containing a kernel that performs a prolongation operation '''
    _, invoke_info = parse(os.path.join(BASE_PATH,
                                        "22.0_intergrid_prolong.f90"),
                           api=API)
    for distmem in [False, True]:
        psy = PSyFactory(API, distributed_memory=distmem).create(invoke_info)
        gen_code = str(psy.gen)

        if utils.TEST_COMPILE:
            assert utils.code_compiles(API, psy, tmpdir, f90, f90flags)

        expected = (
            "      USE prolong_kernel_mod, ONLY: prolong_kernel_code\n"
            "      USE mesh_map_mod, ONLY: mesh_map_type\n"
            "      USE mesh_mod, ONLY: mesh_type\n"
            "      TYPE(field_type), intent(inout) :: field1\n"
            "      TYPE(field_type), intent(in) :: field2\n"
            "      INTEGER cell\n")
        assert expected in gen_code

        expected = (
            "      INTEGER ncell_field1, ncpc_field1_field2\n"
            "      INTEGER, pointer :: cell_map_field2(:,:) => null()\n"
            "      TYPE(mesh_map_type), pointer :: "
            "mmap_field1_field2 => null()\n"
            "      TYPE(mesh_type), pointer :: mesh_field2 => null()\n"
            "      TYPE(mesh_type), pointer :: mesh_field1 => null()\n")
        assert expected in gen_code

        expected = (
            "      ! Look-up mesh objects and loop limits for inter-grid "
            "kernels\n"
            "      !\n"
            "      mesh_field1 => field1%get_mesh()\n"
            "      mesh_field2 => field2%get_mesh()\n"
            "      mmap_field1_field2 => mesh_field2%get_mesh_map"
            "(mesh_field1)\n"
            "      cell_map_field2 => mmap_field1_field2%"
            "get_whole_cell_map()\n")
        if distmem:
            expected += (
                "      ncell_field1 = mesh_field1%get_last_halo_cell("
                "depth=2)\n")
        else:
            expected += \
                "      ncell_field1 = field1_proxy%vspace%get_ncell()\n"
        expected += (
            "      ncpc_field1_field2 = mmap_field1_field2%"
            "get_ntarget_cells_per_source_cell()\n")
        assert expected in gen_code

        if distmem:
            # We are writing to a continuous field on the fine mesh, we
            # only need to halo swap to depth one on the coarse.
            expected = (
                "      IF (field2_proxy%is_dirty(depth=1)) THEN\n"
                "        CALL field2_proxy%halo_exchange(depth=1)\n"
                "      END IF \n"
                "      !\n"
                "      DO cell=1,mesh_field2%get_last_halo_cell(1)\n")
            assert expected in gen_code
        else:
            assert "DO cell=1,field2_proxy%vspace%get_ncell()\n" in gen_code

        expected = (
            "        CALL prolong_kernel_code(nlayers, "
            "cell_map_field2(:,cell), ncpc_field1_field2, ncell_field1, "
            "field1_proxy%data, field2_proxy%data, ndf_w1, undf_w1, map_w1, "
            "undf_w2, map_w2(:,cell))\n"
            "      END DO \n")
        assert expected in gen_code

        if distmem:
            set_dirty = "      CALL field1_proxy%set_dirty()\n"
            assert set_dirty in gen_code