code: def get_info(dirs, parallel, resources=None):
      
      # Allow custom specification of cores/memory in resources
      if resources and isinstance(resources, dict) and "machine" in resources:
          minfo = resources["machine"]
          assert "memory" in minfo, "Require memory specification (Gb) in machine resources: %s" % minfo
          assert "cores" in minfo, "Require core specification in machine resources: %s" % minfo
          return minfo
      if parallel["type"] in ["ipython"] and not parallel["queue"] == "localrun":
          cache_file = _get_cache_file(dirs, parallel)
          if utils.file_exists(cache_file):
              with open(cache_file) as in_handle:
                  minfo = yaml.safe_load(in_handle)
              return _combine_machine_info(minfo)
          else:
              return {}
      else:
          return _combine_machine_info(machine_info())
docs: Retrieve cluster or local filesystem resources from pre-retrieved information.