Function deploy

Deploys a Slim-constructed model across multiple clones. The deployment options are specified by the config object and support deploying one or several clones on different GPUs and one or several replicas of such clones. The argument `model_fn` is called `config.num_clones` times to create

(config,
           model_fn,
           args=None,
           kwargs=None,
           optimizer=None,
           summarize_gradients=False)