*tuple of these) -- Callable or callables to graph. See
        Graph memory management for when passing a tuple of callables
        is appropriate.  If you pass a tuple of callables, their order
        in the tuple must be the same order they'll run in the live
        workload.
  * **sample_args** (*tuple of Tensors**, or **tuple of tuples of
    Tensors*) -- Samples args for each callable. If a single
    callable was passed, "sample_args" must be a single tuple of
    argument Tensors. If a tuple of callables was passed,
    "sample_args" must be tuple of tuples of argument Tensors.

  * **num_warmup_iters** (*int*) -- The number of warmup
    iterations. Currently, "DataDistributedParallel" needs 11
    iterations for warm up. Default: "3".

  * **allow_unused_input** (*bool*) -- If False, specifying inputs
    that were not used when computing outputs (and therefore their
    grad is always zero) is an error. Defaults to False.

Note: