"""Module containing the Trainer class and related functions""" import importlib import logging import math import os import sys from contextlib import contextmanager from dataclasses import dataclass, field from functools import partial from pathlib import Path from typing import List, Optional, Union import numpy as np import torch import torch.cuda import torch.distributed as dist import transformers from datasets import Dataset, set_caching_enabled from torch.optim.lr_scheduler import OneCycleLR from torch.utils.data import ( DataLoader, DistributedSampler, RandomSampler, SequentialSampler, ) from transformers import EarlyStoppingCallback, Trainer, TrainingArguments from transformers.trainer_pt_utils import SequentialDistributedSampler from axolotl.monkeypatch.relora import ReLoRACallback, ReLoRAScheduler from axolotl.utils.callbacks import ( EvalFirstStepCallback, GPUStatsCallback, SaveBetterTransformerModelCallback, bench_eval_callback_factory, log_prediction_callback_factory, ) from axolotl.utils.collators import DataCollatorForSeq2Seq from axolotl.utils.dataloader import MultipackDistributedDataloader from axolotl.utils.distributed import ( is_distributed, is_main_process, reduce_and_broadcast, zero_first, ) from axolotl.utils.schedulers import get_cosine_schedule_with_quadratic_warmup LOG = logging.getLogger("axolotl") @torch.jit.script def weighted_cross_entropy( logits: torch.Tensor, labels: torch.Tensor, weights: torch.Tensor ): # Flatten the logits, labels, and weights tensors logits = logits.view( -1, logits.size(-1) ) # logits becomes of shape [batch_size*sequence_length, vocab_size] labels = labels.view(-1) # labels becomes of shape [batch_size*sequence_length] weights = weights.view(-1) # weights becomes of shape [batch_size*sequence_length] # Compute the unweighted cross entropy loss losses = torch.nn.functional.cross_entropy(logits, labels, reduction="none") # Apply the weights to the losses and compute their sum return (weights * losses).sum() @torch.jit.script def create_weighted_mask(labels: torch.Tensor): # Check if the tensor is 2D. If not, unsqueeze it to make it 2D if len(labels.shape) == 1: labels = labels.unsqueeze(0) weights = torch.zeros_like(labels).float() for i in range(labels.shape[0]): mask = labels[i] != -100 # Create a tensor to track group ids group_ids = torch.zeros_like(labels[i]).int() curr_group_id = 0 for j in range(1, len(labels[i])): if mask[j] and not mask[j - 1]: # switch from masked to unmasked label curr_group_id += 1 # start new group group_ids[j] = ( curr_group_id if mask[j] else 0 ) # assign group id if unmasked label # Count only unmasked labels in each group group_counts = torch.bincount(group_ids[mask]) mask_weights = torch.zeros_like(labels[i]).float() mask_weights[mask] = 1.0 / group_counts[group_ids[mask]] weights[i] = mask_weights return weights.squeeze() # squeeze the output to match the input dimension def trainer_weighted_loss(model_output, labels, shift_labels=True): logits = ( model_output["logits"] if isinstance(model_output, dict) else model_output[0] ) if shift_labels: logits = logits[..., :-1, :].contiguous() labels = labels[..., 1:].contiguous() weights = create_weighted_mask(labels) return weighted_cross_entropy(logits, labels, weights) @dataclass class AxolotlTrainingArguments(TrainingArguments): """ Extend the base TrainingArguments for axolotl helpers """ lr_quadratic_warmup: bool = field( default=False, metadata={"help": "Use quadratic warmup for cosine scheduling."}, ) sample_packing: bool = field( default=False, metadata={"help": "Use sample packing for efficient training."}, ) eval_sample_packing: Optional[bool] = field( default=None, metadata={"help": "Use sample packing for efficient evals."}, ) sample_packing_efficiency: float = field( default=1.0, metadata={"help": "Sample packing efficiency for calculating batch length."}, ) max_seq_length: int = field( default=2048, metadata={"help": "The maximum sequence length the model can handle"}, ) sample_packing_seq_len_multiplier: int = field( default=1, metadata={"help": "the multiplier for the max len for packed sequences"}, ) relora_steps: Optional[int] = field( default=None, metadata={"help": "how often to reset for ReLoRA"}, ) relora_warmup_steps: Optional[int] = field( default=None, metadata={"help": "how many warmup steps to take after reset for ReLoRA"}, ) bench_split: Optional[str] = field( default="eval", metadata={"help": "The benchmark split to run on"} ) bench_dataset: Optional[str] = field( default="pharaouk/dharma-1/dharma_1_mini.json", metadata={ "help": "Benchmark dataset to use: options are `mmlu-zs`, `mmlu-fs`, or the full path to the dataset file" }, ) do_bench_eval: Optional[bool] = field( default=False, metadata={"help": "Whether to run the Benchmark evaluation."} ) max_bench_samples: Optional[int] = field( default=None, metadata={ "help": "If set, only evaluates on `max_bench_samples` of the benchmark dataset." }, ) bench_source_max_len: int = field( default=2048, metadata={"help": "Maximum source sequence length for bench."} ) class AxolotlTrainer(Trainer): """ Extend the base Trainer for axolotl helpers """ args = None # type: AxolotlTrainingArguments def __init__(self, *args, bench_data_collator=None, **kwargs): self.bench_data_collator = bench_data_collator super().__init__(*args, **kwargs) def create_scheduler( self, num_training_steps: int, optimizer: torch.optim.Optimizer = None ): """ Setup the scheduler. The optimizer of the trainer must have been set up either before this method is called or passed as an argument. Args: num_training_steps (int): The number of training steps to do. optimizer (torch.optim.Optimizer): The training optimizer """ # fmt: off if self.lr_scheduler is None: # type: ignore # pylint: disable=access-member-before-definition # fmt: on if ( self.args.lr_scheduler_type == "cosine" and self.args.lr_quadratic_warmup is True ): self.lr_scheduler = get_cosine_schedule_with_quadratic_warmup( # pylint: disable=attribute-defined-outside-init optimizer, num_warmup_steps=self.args.get_warmup_steps(num_training_steps), num_training_steps=num_training_steps, ) else: return super().create_scheduler(num_training_steps, optimizer) return self.lr_scheduler def _get_train_sampler(self) -> Optional[torch.utils.data.Sampler]: if self.args.world_size > 1 and self.args.sample_packing: return DistributedSampler( self.train_dataset, num_replicas=self.args.world_size, rank=self.args.process_index, seed=self.args.seed, ) return super()._get_train_sampler() def _get_eval_sampler( self, eval_dataset: Dataset ) -> Optional[torch.utils.data.Sampler]: if ( self.args.world_size > 1 and self.args.sample_packing and self.args.eval_sample_packing is not False ): return SequentialDistributedSampler( eval_dataset, num_replicas=self.args.world_size, rank=self.args.process_index, batch_size=self.args.per_device_eval_batch_size, ) return super()._get_eval_sampler(eval_dataset) def get_train_dataloader(self) -> Union[DataLoader, MultipackDistributedDataloader]: if self.args.sample_packing: train_sampler = self._get_train_sampler() return self.accelerator.prepare( MultipackDistributedDataloader( self.train_dataset, batch_size=self._train_batch_size, seq_max_length=self.args.max_seq_length, collate_fn=self.data_collator, sampler=train_sampler, packing_efficiency_estimate=self.args.sample_packing_efficiency, sample_packing_seq_len_multiplier=self.args.sample_packing_seq_len_multiplier, device_count=int(os.environ.get("WORLD_SIZE", 1)), ) ) return super().get_train_dataloader() def get_eval_dataloader( self, eval_dataset: Optional[Dataset] = None ) -> Union[DataLoader, MultipackDistributedDataloader]: if self.args.sample_packing and self.args.eval_sample_packing is not False: eval_dataset = ( eval_dataset if eval_dataset is not None else self.eval_dataset ) eval_sampler = self._get_eval_sampler(eval_dataset) return self.accelerator.prepare( MultipackDistributedDataloader( eval_dataset, batch_size=self.args.eval_batch_size, seq_max_length=self.args.max_seq_length, collate_fn=self.data_collator, sampler=eval_sampler, packing_efficiency_estimate=self.args.sample_packing_efficiency, sample_packing_seq_len_multiplier=self.args.eval_batch_size, device_count=int(os.environ.get("WORLD_SIZE", 1)), ) ) return super().get_eval_dataloader(eval_dataset) def _get_bench_sampler( self, bench_dataset: Dataset ) -> Optional[torch.utils.data.Sampler]: if self.args.world_size <= 1: return SequentialSampler(bench_dataset) return None def get_bench_dataloader( self, bench_dataset: Dataset, ) -> Union[DataLoader, MultipackDistributedDataloader]: dataloader_params = { "batch_size": self.args.eval_batch_size, "collate_fn": self.bench_data_collator, "num_workers": self.args.dataloader_num_workers, "pin_memory": self.args.dataloader_pin_memory, } if not isinstance(bench_dataset, torch.utils.data.IterableDataset): dataloader_params["sampler"] = self._get_bench_sampler(bench_dataset) dataloader_params["drop_last"] = self.args.dataloader_drop_last return DataLoader(bench_dataset, **dataloader_params) # return self.accelerator.prepare(DataLoader(bench_dataset, **dataloader_params)) def compute_loss(self, model, inputs, return_outputs=False): # use one's weighted cross entropy loss calc # if self.args.sample_packing: # labels = inputs.pop("labels") # outputs = model(**inputs) # loss = trainer_weighted_loss(outputs, labels, shift_labels=True) # return (loss, outputs) if return_outputs else loss return super().compute_loss(model, inputs, return_outputs=return_outputs) class OneCycleLRSchedulerTrainer(AxolotlTrainer): """ Trainer subclass that uses the OneCycleLR scheduler """ def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.lr_scheduler = None def create_scheduler( self, num_training_steps: int, optimizer: Optional[torch.optim.Optimizer] = None, ): optimizer = self.optimizer if optimizer is None else optimizer num_warmup_steps = self.args.get_warmup_steps(num_training_steps) pct_start = num_warmup_steps / num_training_steps self.lr_scheduler = OneCycleLR( optimizer, max_lr=self.args.learning_rate, total_steps=num_training_steps, pct_start=pct_start, div_factor=6, ) return self.lr_scheduler class ReLoRATrainer(AxolotlTrainer): """ Trainer subclass that uses the OneCycleLR scheduler """ def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.lr_scheduler = None def create_scheduler( self, num_training_steps: int, optimizer: Optional[torch.optim.Optimizer] = None, ): optimizer = self.optimizer if optimizer is None else optimizer lr_scheduler = super().create_scheduler(num_training_steps, optimizer) if self.args.relora_steps: warmup_steps = ( self.args.relora_warmup_steps if self.args.relora_warmup_steps else 10 ) self.lr_scheduler = ReLoRAScheduler( optimizer, lr_scheduler, self.args.relora_steps, warmup_steps, ) else: self.lr_scheduler = lr_scheduler return self.lr_scheduler def add_position_ids(sample): sample_len = len(sample["input_ids"]) sample["position_ids"] = torch.arange(len(sample["input_ids"])) sample["length"] = sample_len return sample def add_length(sample): sample["length"] = len(sample["input_ids"]) return sample def drop_long_seq(sample, sequence_len=2048): return len(sample["input_ids"]) <= sequence_len and len(sample["input_ids"]) > 0 @contextmanager def disable_datasets_caching(): try: set_caching_enabled(False) yield finally: set_caching_enabled(True) def process_datasets_for_packing(cfg, train_dataset, eval_dataset, tokenizer): drop_long = partial(drop_long_seq, sequence_len=cfg.sequence_len) with zero_first(is_main_process()): train_dataset = train_dataset.filter(drop_long, num_proc=cfg.dataset_processes) if eval_dataset: eval_dataset = eval_dataset.filter( drop_long, num_proc=cfg.dataset_processes ) if cfg.group_by_length: train_dataset = train_dataset.map( add_length, num_proc=cfg.dataset_processes ) if cfg.sample_packing: train_dataset = train_dataset.map( add_position_ids, num_proc=cfg.dataset_processes ) if cfg.eval_sample_packing is not False: if eval_dataset: eval_dataset = eval_dataset.map( add_position_ids, num_proc=cfg.dataset_processes ) # Phi doesn't want the attention_mask feature when training if "CodeGenTokenizer" in tokenizer.__class__.__name__: train_dataset = train_dataset.remove_columns("attention_mask") if eval_dataset: eval_dataset = eval_dataset.remove_columns("attention_mask") return train_dataset, eval_dataset def calculate_total_num_steps(cfg, train_dataset, tokenizer): if cfg.sample_packing: # we have to drop anything longer then sequence len otherwise # flash attention with position ids fails if not cfg.total_num_tokens: LOG.info("calculating total_num_tokens") total_num_tokens = np.sum( train_dataset.data.column("input_ids") .to_pandas() .apply(lambda x: len(x)) # pylint: disable=unnecessary-lambda .values ) LOG.info(f"total_num_tokens: {total_num_tokens}") cfg.total_num_tokens = total_num_tokens if not cfg.total_supervised_tokens: total_supervised_tokens = ( train_dataset.data.column("labels") .to_pandas() .apply(lambda x: np.sum(np.array(x) != -100)) .sum() ) LOG.info(f"`total_supervised_tokens: {total_supervised_tokens}`") cfg.total_supervised_tokens = total_supervised_tokens if cfg.sample_packing_eff_est: total_num_steps = ( # match count to len est in dataloader ( math.floor( 0.99 * cfg.total_num_tokens / cfg.sample_packing_eff_est / cfg.sequence_len // cfg.batch_size // int(os.environ.get("WORLD_SIZE", 1)) ) - 1 ) * cfg.num_epochs ) LOG.info( f"total_num_tokens: {cfg.total_num_tokens}, total_num_steps: {total_num_steps}" ) else: if cfg.world_size > 1 and is_distributed(): sampler = DistributedSampler( train_dataset, num_replicas=cfg.world_size, rank=dist.get_rank(), seed=cfg.seed or 42, ) else: sampler = RandomSampler(train_dataset) data_loader = MultipackDistributedDataloader( train_dataset, batch_size=cfg.micro_batch_size, seq_max_length=cfg.max_packed_sequence_len or cfg.sequence_len, collate_fn=DataCollatorForSeq2Seq( tokenizer, return_tensors="pt", padding="longest", ), sampler=sampler, packing_efficiency_estimate=cfg.sample_packing_eff_est, sample_packing_seq_len_multiplier=cfg.micro_batch_size, device_count=int(os.environ.get("WORLD_SIZE", 1)), ) data_loader_len = data_loader.len_w_stats() actual_eff = data_loader.efficiency() LOG.info(f"data_loader_len: {data_loader_len}") # FIXME: is there a bug here somewhere? the total num steps depends # on the agreed on value for sample_packing_eff_est total_num_steps = int(math.floor(data_loader_len * cfg.num_epochs)) def calc_sample_packing_eff_est(estimates: List[float]): LOG.info(f"sample_packing_eff_est across ranks: {repr(estimates)}") return max(estimates) sample_packing_actual_eff_all = reduce_and_broadcast( lambda: actual_eff, calc_sample_packing_eff_est, ) sample_packing_eff_est = ( math.ceil(sample_packing_actual_eff_all * 100.0) / 100.0 ) cfg.sample_packing_eff_est = sample_packing_eff_est LOG.info(f"sample_packing_eff_est: {cfg.sample_packing_eff_est}") else: total_num_steps = int( math.ceil(len(train_dataset) * cfg.num_epochs / cfg.batch_size) ) LOG.info(f"total_num_steps: {total_num_steps}") return total_num_steps def setup_fsdp_envs(cfg): os.environ["ACCELERATE_USE_FSDP"] = "true" if cfg.fsdp_config.fsdp_offload_params: os.environ["FSDP_OFFLOAD_PARAMS"] = "true" if cfg.fsdp_config.fsdp_sync_module_states: os.environ["FSDP_SYNC_MODULE_STATES"] = "true" if cfg.fsdp_config.fsdp_state_dict_type: os.environ["FSDP_STATE_DICT_TYPE"] = cfg.fsdp_config.fsdp_state_dict_type if cfg.fsdp_config.fsdp_transformer_layer_cls_to_wrap: os.environ[ "FSDP_TRANSFORMER_CLS_TO_WRAP" ] = cfg.fsdp_config.fsdp_transformer_layer_cls_to_wrap def setup_trainer(cfg, train_dataset, eval_dataset, model, tokenizer, total_num_steps): if cfg.fsdp: setup_fsdp_envs(cfg) elif cfg.deepspeed: os.environ["ACCELERATE_USE_DEEPSPEED"] = "true" warmup_steps = ( cfg.warmup_steps if cfg.warmup_steps is not None else min(int(0.03 * total_num_steps), 100) ) logging_steps = ( cfg.logging_steps if cfg.logging_steps is not None else max(min(int(0.005 * total_num_steps), 10), 1) ) training_arguments_kwargs = {} if cfg.bf16 == "full": training_arguments_kwargs["bf16_full_eval"] = True else: training_arguments_kwargs["bf16"] = cfg.bf16 training_arguments_kwargs["fp16"] = (cfg.fp16 and not cfg.bf16) or False training_arguments_kwargs["tf32"] = cfg.tf32 training_arguments_kwargs["warmup_steps"] = warmup_steps training_arguments_kwargs["logging_steps"] = logging_steps if cfg.seed: training_arguments_kwargs["seed"] = cfg.seed if cfg.gradient_checkpointing: training_arguments_kwargs["gradient_checkpointing"] = cfg.gradient_checkpointing if cfg.fsdp: training_arguments_kwargs["fsdp"] = cfg.fsdp if cfg.fsdp_config: training_arguments_kwargs["fsdp_config"] = dict(cfg.fsdp_config) # deepspeed if cfg.deepspeed: training_arguments_kwargs["deepspeed"] = cfg.deepspeed if cfg.lr_quadratic_warmup is not None: training_arguments_kwargs["lr_quadratic_warmup"] = cfg.lr_quadratic_warmup if cfg.adam_beta1: training_arguments_kwargs["adam_beta1"] = cfg.adam_beta1 if cfg.adam_beta2: training_arguments_kwargs["adam_beta2"] = cfg.adam_beta2 if cfg.adam_epsilon: training_arguments_kwargs["adam_epsilon"] = cfg.adam_epsilon if cfg.max_grad_norm: training_arguments_kwargs["max_grad_norm"] = cfg.max_grad_norm if cfg.hub_model_id: training_arguments_kwargs["hub_model_id"] = cfg.hub_model_id training_arguments_kwargs["push_to_hub"] = True training_arguments_kwargs["hub_private_repo"] = True if cfg.hub_strategy: training_arguments_kwargs["hub_strategy"] = cfg.hub_strategy if cfg.save_safetensors: training_arguments_kwargs["save_safetensors"] = cfg.save_safetensors if cfg.sample_packing_eff_est: training_arguments_kwargs[ "sample_packing_efficiency" ] = cfg.sample_packing_eff_est if cfg.eval_steps: training_arguments_kwargs["evaluation_strategy"] = "steps" training_arguments_kwargs["eval_steps"] = cfg.eval_steps elif cfg.evaluation_strategy: training_arguments_kwargs["evaluation_strategy"] = cfg.evaluation_strategy elif cfg.val_set_size == 0: # no eval set, so don't eval training_arguments_kwargs["evaluation_strategy"] = "no" else: # we have an eval set, but no steps defined, default to use epoch training_arguments_kwargs["evaluation_strategy"] = "epoch" if cfg.save_steps: training_arguments_kwargs["save_strategy"] = "steps" training_arguments_kwargs["save_steps"] = cfg.save_steps elif cfg.save_strategy: training_arguments_kwargs["save_strategy"] = cfg.save_strategy else: # default to saving each epoch if not defined training_arguments_kwargs["save_strategy"] = "epoch" if cfg.do_bench_eval: training_arguments_kwargs["do_bench_eval"] = cfg.do_bench_eval if cfg.bench_dataset: training_arguments_kwargs["bench_dataset"] = cfg.bench_dataset if cfg.metric_for_best_model: training_arguments_kwargs["metric_for_best_model"] = cfg.metric_for_best_model if cfg.greater_is_better: training_arguments_kwargs["greater_is_better"] = cfg.greater_is_better if cfg.torch_compile: if torch.__version__ < "2.1.0": # pylint: disable=protected-access LOG.warning("torch>=2.1.0 required for torch_compile to work properly") else: import torch._dynamo # pylint: disable=redefined-outer-name torch._dynamo.config.suppress_errors = ( # pylint: disable=protected-access True ) training_arguments_kwargs["torch_compile"] = cfg.torch_compile if cfg.torch_compile_backend: training_arguments_kwargs[ "torch_compile_backend" ] = cfg.torch_compile_backend # DDP Config if cfg.ddp_timeout: training_arguments_kwargs["ddp_timeout"] = cfg.ddp_timeout # see https://pytorch.org/docs/stable/generated/torch.nn.parallel.DistributedDataParallel.html if cfg.ddp_bucket_cap_mb: training_arguments_kwargs["ddp_bucket_cap_mb"] = cfg.ddp_bucket_cap_mb if cfg.ddp_broadcast_buffers is not None: training_arguments_kwargs["ddp_broadcast_buffers"] = cfg.ddp_broadcast_buffers training_args = AxolotlTrainingArguments( # pylint: disable=unexpected-keyword-arg max_steps=total_num_steps if cfg.max_steps else -1, max_seq_length=cfg.sequence_len, per_device_train_batch_size=cfg.micro_batch_size, per_device_eval_batch_size=cfg.eval_batch_size if cfg.eval_batch_size is not None else cfg.micro_batch_size, gradient_accumulation_steps=cfg.gradient_accumulation_steps, eval_accumulation_steps=cfg.gradient_accumulation_steps, num_train_epochs=cfg.num_epochs, learning_rate=cfg.learning_rate, output_dir=cfg.output_dir, save_total_limit=cfg.save_total_limit if cfg.save_total_limit else 4, load_best_model_at_end=( (cfg.load_best_model_at_end is not False or cfg.early_stopping_patience) and cfg.val_set_size > 0 and cfg.save_steps and cfg.eval_steps and cfg.save_steps % cfg.eval_steps == 0 ) or False, ddp_find_unused_parameters=False if cfg.ddp else None, group_by_length=cfg.group_by_length, report_to="wandb" if cfg.use_wandb else None, run_name=cfg.wandb_run_id if cfg.use_wandb else None, optim=cfg.optimizer if cfg.optimizer else "adamw_hf", lr_scheduler_type=cfg.lr_scheduler if cfg.lr_scheduler and cfg.lr_scheduler not in ("one_cycle", "log_sweep") else "cosine", weight_decay=cfg.weight_decay if cfg.weight_decay is not None else 0.0, sample_packing=cfg.sample_packing if cfg.sample_packing else False, eval_sample_packing=cfg.eval_sample_packing, sample_packing_seq_len_multiplier=cfg.micro_batch_size, relora_steps=cfg.relora_steps, relora_warmup_steps=cfg.relora_warmup_steps, **training_arguments_kwargs, ) trainer_kwargs = {} if cfg.optimizer == "adamw_anyprecision": if Path(cfg.torchdistx_path).exists(): sys.path.append(cfg.torchdistx_path) importlib.import_module("torchdistx") callbacks = [] callbacks.append(GPUStatsCallback(cfg)) callbacks.append(EvalFirstStepCallback) if cfg.relora_steps: callbacks.append(ReLoRACallback(cfg)) if hasattr(model, "use_bettertransformer") and model.use_bettertransformer is True: callbacks.append(SaveBetterTransformerModelCallback) data_collator_kwargs = { "padding": True, # True/"longest" is the default } if cfg.pad_to_sequence_len: data_collator_kwargs["pad_to_multiple_of"] = 64 * math.ceil( cfg.sequence_len / 64 ) else: # A100 is best at 64, while others at 8. Let's use the larger so we don't have to check # https://docs.nvidia.com/deeplearning/performance/dl-performance-matrix-multiplication/index.html data_collator_kwargs["pad_to_multiple_of"] = 64 if cfg.is_llama_derived_model and cfg.landmark_attention: from axolotl.monkeypatch.llama_landmark_attn import ( add_mem_tokens, get_mem_id, set_model_mem_id, ) set_model_mem_id(model, tokenizer) LOG.info("Adding landmark attention tokens to dataset") for dataset in [train_dataset, eval_dataset]: dataset = dataset.map( partial(add_mem_tokens, mem_freq=50, mem_id=get_mem_id(tokenizer)), batched=False, num_proc=32, ) trainer_cls = AxolotlTrainer if cfg.lr_scheduler == "one_cycle" and (cfg.fsdp or cfg.adapter == "qlora"): trainer_cls = OneCycleLRSchedulerTrainer elif cfg.relora_steps: trainer_cls = ReLoRATrainer trainer = trainer_cls( model=model, train_dataset=train_dataset, eval_dataset=eval_dataset, args=training_args, data_collator=DataCollatorForSeq2Seq( tokenizer, return_tensors="pt", **data_collator_kwargs, ), bench_data_collator=transformers.DataCollatorForSeq2Seq( tokenizer, return_tensors="pt", **data_collator_kwargs, ), callbacks=callbacks, **trainer_kwargs, ) if cfg.use_wandb and cfg.eval_table_size > 0: LogPredictionCallback = log_prediction_callback_factory(trainer, tokenizer) trainer.add_callback(LogPredictionCallback(cfg)) if cfg.do_bench_eval: trainer.add_callback(bench_eval_callback_factory(trainer, tokenizer)) # TODO on_save callback to sync checkpoints to GCP/AWS in background if cfg.early_stopping_patience: early_stop_cb = EarlyStoppingCallback( cfg.early_stopping_patience, ) trainer.add_callback(early_stop_cb) return trainer