code: def mark_jit(*args, **kwargs):
      jit_markers = kwargs.pop("marks", [])
      jit_markers += [
          pytest.mark.skipif(
              "CI" in os.environ, reason="to reduce running time on CI"
          )
      ]
      kwargs["marks"] = jit_markers
      return pytest.param(*args, **kwargs)
  
imports: import logging
  import os
  from collections import namedtuple
  import pytest
  import torch
  import pyro
  import pyro.distributions
  import pyro.optim
  import pyro.poutine
  from pyro.contrib.conjugate.infer import BetaBinomialPair, GammaPoissonPair, collapse_conjugate, posterior_replay
  from pyro.infer import SVI, TraceEnum_ELBO
  from pyro.infer.autoguide import AutoDelta
  from pyro.infer.mcmc import MCMC, NUTS, ArrowheadMassMatrix
  from pyro.util import ignore_jit_warnings
  from tests.common import assert_close, assert_equal
  from .test_hmc import GaussianChain, rmse
label_desc: Use image node_id 1 for calling a global function with example usage: mark_jit() and returns: pytest