def lambada_create_tokens_data(params, path): with open(path, 'w') as f: req = requests.get(lambada_src_uri) req.raise_for_status() jsons = [json.loads(l) for l in req.iter_lines()] texts = [ftfy.fix_text(j['text'], normalization=normalization) for j in jsons] enc = fetch_encoder(params) arrays = [encode(enc, t) for t in texts] json.dump(arrays, f) return arrays
def check_dataset(input_fn, params): tf.enable_eager_execution() dataset = input_fn(params) dataset_iter = dataset.make_one_shot_iterator() tensor, _ = next(dataset_iter) enc = fetch_encoder(params) for p in tensor[:1]: txt = enc.decode(p) print('-' * 50) print(txt[:500], '\n\n...\n\n', txt[-500:]) print('-' * 50) exit()
def wikitext_create_tokens_data(params, path, version="wikitext2"): assert version.lower() in ["wikitext2", "wikitext103"] wikitext2_src = "https://s3.amazonaws.com/research.metamind.io/wikitext/wikitext-2-raw-v1.zip" wikitext103_src = "https://s3.amazonaws.com/research.metamind.io/wikitext/wikitext-103-raw-v1.zip" version_src = wikitext103_src if version.lower( ) == "wikitext103" else wikitext2_src with open(path, 'w') as f: wikitext_path = f"./{version}-raw-v1.zip" os.system(f"wget {version_src} -O {wikitext_path}") os.makedirs(f"{version}", exist_ok=True) os.system(f"unzip {wikitext_path} -d {version}") n = 103 if version.lower() == "wikitext103" else 2 with open(f"./{version}/wikitext-{n}-raw/wiki.test.raw", 'r') as wt: text = ftfy.fix_text(wikitext_detokenizer(wt.read())) enc = fetch_encoder(params) encoded_text = encode(enc, text) arrays = [] for i in range(0, len(encoded_text), params["n_ctx"] - 1): arrays.append(encoded_text[i:i + params["n_ctx"] - 1]) json.dump(arrays, f) return arrays
def main(args): # Setup logging logger = setup_logging(args) # Read params of model params = fetch_model_params(args.model) # Fetch appropriate input functions input_fn = generic_text pred_input_fn = pred_input handle_pred_output_fn = handle_pred_output if params["mlm_training"]: mlm_sample_text_fn = partial(mlm_sample_text, params) input_fn = partial(generic_text, sample_text_fn=mlm_sample_text_fn) # Fetch encoder per params encoder = fetch_encoder(params) pred_input_fn = partial(pred_input_fn, path_to_prompt=args.prompt, logger=logger, enc=encoder) # Sample from Dataset if check dataset flag is on if args.check_dataset: check_dataset(input_fn) # Confirm deletion of checkpoint files if --new flag is set if args.new: if yes_or_no( f"Are you sure you want to remove '{params['model_path']}' to start afresh?" ): remove_gs_or_filepath(params["model_path"]) else: exit() # Save config to logdir for experiment management save_config(params, params["model_path"]) # Add to params: auto_layout, auto_layout_and_mesh_shape, use_tpu, num_cores mesh_shape = mtf.convert_to_shape(params["mesh_shape"]) params["num_cores"] = mesh_shape.size params["auto_layout"] = args.auto_layout params["auto_layout_and_mesh_shape"] = args.auto_layout_and_mesh_shape params["use_tpu"] = True if not args.tpu is None else False params["gpu_ids"] = args.gpu_ids params["steps_per_checkpoint"] = args.steps_per_checkpoint # Expand attention types param params["attention_types"] = expand_attention_types_params( params["attention_types"]) assert len(params["attention_types"]) == params[ "n_layer"] # Assert that the length of expanded list = num layers params["predict_batch_size"] = params.get("predict_batch_size", 1) # Default to 1 params["predict"] = args.predict params['model'] = params.get( "model", "GPT" ) # Default model selection to GPT since it's the only option for now # Sample quality of MoE models suffers when using the faster sampling method, so default to slow_sampling if # moe layers are present params[ "slow_sampling"] = True if params["moe_layers"] is not None else False logger.info(f"params = {params}") # Get eval tasks from params eval_tasks = params.get("eval_tasks", []) has_predict_or_eval_steps_or_eval_tasks = params[ "predict_steps"] > 0 or params["eval_steps"] > 0 or len(eval_tasks) > 0 for t in eval_tasks: assert t in task_descriptors, f"Eval task '{t}' is not known" task_descriptors[t]["init_fn"](params) # Set up TPUs and Estimator if args.tpu == "colab": tpu_cluster_resolver = tf.distribute.cluster_resolver.TPUClusterResolver( ) if params["use_tpu"] else None else: tpu_cluster_resolver = tf.distribute.cluster_resolver.TPUClusterResolver( args.tpu) if params["use_tpu"] else None config = tpu_config.RunConfig( cluster=tpu_cluster_resolver, model_dir=params["model_path"], save_checkpoints_steps=None, # Disable the default saver save_checkpoints_secs=None, # Disable the default saver log_step_count_steps=params["iterations"], save_summary_steps=params["iterations"], tpu_config=tpu_config.TPUConfig( num_shards=mesh_shape.size, iterations_per_loop=params["iterations"], num_cores_per_replica=1, per_host_input_for_training=tpu_config.InputPipelineConfig. BROADCAST)) estimator = tpu_estimator.TPUEstimator( use_tpu=params["use_tpu"], model_fn=model_fn, config=config, train_batch_size=params["train_batch_size"], eval_batch_size=params["train_batch_size"], predict_batch_size=params["predict_batch_size"], params=params) def _make_task_estimator(task): task_params = params.copy() task_params["eval_task"] = task return tpu_estimator.TPUEstimator( use_tpu=params["use_tpu"], model_fn=model_fn, config=config, train_batch_size=params["train_batch_size"], eval_batch_size=params["train_batch_size"], predict_batch_size=params["predict_batch_size"], params=task_params) eval_task_estimators = { task: _make_task_estimator(task) for task in eval_tasks } current_step = int( estimator_lib._load_global_step_from_checkpoint_dir( params["model_path"])) logger.info(f"Current step {current_step}") if args.predict: # Predict predictions = estimator.predict(input_fn=pred_input_fn) logger.info("Predictions generated") enc = fetch_encoder(params) handle_pred_output_fn(predictions, logger, enc, params, out_name=f"predictions_{current_step}") return elif has_predict_or_eval_steps_or_eval_tasks: # Eval and train - stop and predict and/or eval every checkpoint while current_step < params["train_steps"]: next_checkpoint = min(current_step + args.steps_per_checkpoint, params["train_steps"]) estimator.train(input_fn=partial(input_fn, eval=False), max_steps=next_checkpoint) current_step = next_checkpoint if params["predict_steps"] > 0: logger.info("Running prediction...") predictions = estimator.predict(input_fn=pred_input_fn) enc = fetch_encoder(params) handle_pred_output_fn(predictions, logger, enc, params, out_name=f"predictions_{current_step}") if params["eval_steps"] > 0: logger.info("Running evaluation...") eval_results = estimator.evaluate(input_fn=partial(input_fn, eval=True), steps=params["eval_steps"]) logger.info(f"Eval results: {eval_results}") for task in eval_tasks: logger.info(f"Starting evaluation task '{task}'") task_info = task_descriptors[task]["get_task_info_fn"](params) task_estimator = eval_task_estimators[task] task_input_fn = task_descriptors[task]["input_fn"] eval_results = task_estimator.evaluate( input_fn=task_input_fn, steps=task_info["n_steps"], name=task) logger.info(f"Eval task '{task}' results: {eval_results}") return else: # Else, just train while current_step < params["train_steps"]: # Else, don't stop and restart estimator.train(input_fn=partial(input_fn, eval=False), max_steps=params["train_steps"])