code: def backend_pair_dtype_mkl_32(request):
      nm, nc = get_backend_pair_mkl(
          dtype=request.param,
          device_id=request.config.getoption("--device_id"),
      )
  
      def cleanup():
          nm, nc = request.getfixturevalue("backend_pair_dtype_mkl_32")
          del nm
          del nc
  
      request.addfinalizer(cleanup)
  
      return (nm, nc)
  
imports: import itertools
  import numpy
  import pytest
  import re
  from neon.backends import gen_backend
  from neon.backends.nervanacpu import NervanaCPU
  from neon.backends.nervanamkl import NervanaMKL
  from neon.layers.container import DeltasTree
label_desc: Use image node_id 21 for calling a global function with example usage: backend_pair_dtype_mkl_32(request) and returns: nm,  nc