code: def _generate_cache_key(
      frame, func: Callable, args, suffix="__APPLY_UDF"
  ):
      """Create a cache key that uniquely identifies a compilation.
  
      A new compilation is needed any time any of the following things change:
      - The UDF itself as defined in python by the user
      - The types of the columns utilized by the UDF
      - The existence of the input columns masks
      """
      scalar_argtypes = tuple(typeof(arg) for arg in args)
      return (
          *cudautils.make_cache_key(
              func, tuple(_all_dtypes_from_frame(frame).values())
          ),
          *(col.mask is None for col in frame._data.values()),
          *frame._data.keys(),
          scalar_argtypes,
          suffix,
      )
  
imports: import os
  from typing import Any, Callable, Dict
  import cachetools
  import cupy
  import llvmlite.binding
  import numpy
  from cuda import cudart
  from numba import cuda, typeof
  from numba.core.datamodel import default_manager, models
  from numba.core.errors import TypingError
  from numba.core.extending import register_model
  from numba.np import numpy_support
  from numba.types import CPointer, Poison, Record, Tuple, boolean, int64, void
  import rmm
  from cudf._lib.strings_udf import column_from_udf_string_array, column_to_string_view_array
  from cudf.api.types import is_scalar
  from cudf.core.column.column import as_column
  from cudf.core.dtypes import dtype
  from cudf.core.udf.masked_typing import MaskedType
  from cudf.core.udf.strings_typing import str_view_arg_handler, string_view, udf_string
  from cudf.utils import cudautils
  from cudf.utils._numba import _CUDFNumbaConfig, _get_ptx_file
  from cudf.utils.dtypes import BOOL_TYPES, DATETIME_TYPES, NUMERIC_TYPES, STRING_TYPES, TIMEDELTA_TYPES
  from cudf.utils.nvtx_annotation import _cudf_nvtx_annotate
  from cudf.utils.utils import initfunc
label_desc: Use image node_id 8 for calling a global function with example usage: _generate_cache_key(frame, func, args, suffix) and returns: unknown,  unknown,  unknown,  scalar_argtypes,  suffix