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seq2seq_runtime.py
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seq2seq_runtime.py
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import copy
import datetime
import json
import logging
import os
from collections import Sized
from pathlib import Path
from typing import Dict, Optional, Any, List
import _jsonnet
import jsonlines
import numpy as np
import torch
import torch.distributed as dist
import transformers
import wandb
from overrides import overrides
from torch import nn
from tqdm import tqdm
from transformers import (
set_seed,
Seq2SeqTrainer,
WEIGHTS_NAME,
ProgressCallback,
EarlyStoppingCallback,
)
from transformers.integrations import WandbCallback
from transformers.trainer_pt_utils import metrics_format
from transformers.trainer_utils import get_last_checkpoint
from wandb.sdk.wandb_run import Run
from analyzers import Analyzer
from callbacks import Callback
from common.from_params import create_kwargs
from common.nest import unflatten
from common.torch_utils import is_world_process_zero
from hp_search_space import HPSearchSpace
from runtime.base_runtime import Runtime
from tokenization_utils import Tokenizer
from trainers import BaseTrainer, CustomTrainingArguments
transformers.logging.set_verbosity_info()
from common import (
Lazy,
gpu_utils,
ExperimentStage,
Params,
JsonDict,
py_utils,
)
from common.py_utils import get_human_readable_count, chunks
from data import DataLoaderFactory
from models import Model
logger = logging.getLogger("app")
def get_args_dict(**kwargs) -> Dict[str, Any]:
return kwargs
class CustomWandbCallback(WandbCallback):
@overrides
def setup(self, args, state, model, **kwargs):
if self._wandb is None:
return
self._initialized = True
if state.is_world_process_zero:
# define default x-axis (for latest wandb versions)
if self._wandb.run is None:
return
if getattr(self._wandb, "define_metric", None):
self._wandb.define_metric("train/global_step")
self._wandb.define_metric(
"*", step_metric="train/global_step", step_sync=True
)
# keep track of model topology and gradients, unsupported on TPU
from transformers import is_torch_tpu_available
if (
not is_torch_tpu_available()
and os.getenv("WANDB_WATCH", "false") != "false"
):
has_already_watched = getattr(self, "_has_already_watched", False)
if not has_already_watched:
self._wandb.watch(
model,
log=os.getenv("WANDB_WATCH", "gradients"),
log_freq=max(100, args.logging_steps),
log_graph=True,
)
self._has_already_watched = True
def on_log(self, args, state, control, model=None, logs=None, **kwargs):
if self._wandb is None:
return
if state.is_world_process_zero:
if self._wandb.run is None:
return
if not self._initialized:
self.setup(args, state, model)
logs = self.rewrite_logs(logs)
self._wandb.log({**logs, "train/global_step": state.global_step})
@staticmethod
def rewrite_logs(d):
new_d = {}
eval_prefix = "eval_"
eval_prefix_len = len(eval_prefix)
test_prefix = "test_"
test_prefix_len = len(test_prefix)
pred_prefix = "pred_"
pred_prefix_len = len(pred_prefix)
for k, v in d.items():
if k.startswith(eval_prefix):
new_d["eval/" + k[eval_prefix_len:]] = v
elif k.startswith(test_prefix):
new_d["test/" + k[test_prefix_len:]] = v
elif k.startswith(pred_prefix):
new_d["pred/" + k[pred_prefix_len:]] = v
else:
new_d["train/" + k] = v
return new_d
class CustomProgressCallback(ProgressCallback):
@overrides
def on_log(self, args, state, control, logs=None, **kwargs):
if state.is_local_process_zero and self.training_bar is not None:
_ = logs.pop("total_flos", None)
if len(state.log_history) >= 2:
last_log = state.log_history[-2]
else:
last_log = {}
last_log.update(logs)
self.training_bar.set_postfix(**last_log)
from transformers import trainer
trainer.DEFAULT_PROGRESS_CALLBACK = CustomProgressCallback
@Runtime.register("seq2seq")
class Seq2SeqRuntime(Runtime):
def __init__(
self,
exp_name: str,
project_name: str,
# model: Lazy[Model],
model: JsonDict,
dataset: Lazy[DataLoaderFactory],
tokenizer: Optional[Lazy[Tokenizer]] = None,
trainer: Optional[Dict[str, Any]] = None,
directory: Optional[str] = "experiments",
global_vars: Optional[Dict[str, Any]] = None,
hp_search_space: Optional[Lazy[HPSearchSpace]] = None,
config_dict: Optional[Dict[str, Any]] = None,
sweep_run: Optional[bool] = False,
analyzers: List[Optional[JsonDict]] = None,
config_filenames: Optional[List[str]] = None,
**kwargs,
):
self.lazy_model = model
assert "type" in model
self.lazy_dataset = dataset
self.exp_name = exp_name
self.project_name = project_name
self.sweep_run = sweep_run
exp_root = Path(directory) / self.exp_name
exp_root.mkdir(parents=True, exist_ok=True)
self.exp_root = exp_root
logs_dir = self.exp_root / "logs"
logs_dir.mkdir(parents=True, exist_ok=True)
self.logs_dir = logs_dir
self.global_vars = global_vars or {"seed": 123}
self.debug_mode = self.global_vars.get("debug_mode", False)
self.dataset_debug_mode = self.global_vars.get(
"dataset_debug_mode", self.debug_mode
)
self.force_offline = self.global_vars.get("force_offline", False)
self.config_dict = config_dict
self.training_args = trainer or {}
seed = self.global_vars["seed"]
logger.info(f"Setting seed = {seed}")
set_seed(seed)
if self.debug_mode:
logger.info(">>>>>>>>>>>>>>>>> DEBUG MODE <<<<<<<<<<<<<<<<<<<")
if self.dataset_debug_mode:
logger.info(">>>>>>>>>>>>>>>>> DATASET DEBUG MODE <<<<<<<<<<<<<<<<<<<")
if is_world_process_zero():
assert self.logger is not None
self.dl_factory = self.lazy_dataset.construct(
log_dir=self.logs_dir,
debug_mode=self.dataset_debug_mode,
seed=seed,
)
self.write_meta_data()
if tokenizer is not None:
self.tokenizer = tokenizer.construct(
dataset=self.dl_factory,
experiment_root=self.exp_root,
)
else:
self.tokenizer = None
self.dl_factory.set_tokenizer(self.tokenizer)
self.hp_search_space = hp_search_space or Lazy(HPSearchSpace)
self.analyzers = analyzers or []
def get_num_devices() -> int:
world_size = os.environ.get("WORLD_SIZE", None)
if world_size is not None and "RANK" in os.environ:
num_devices = int(world_size)
else:
# Multi GPU training should be always launched by torchrun,
# otherwise we assume single GPU training (even if there are
# multiple GPUs available)
num_devices = 1
if gpu_utils.get_num_gpus() > 1:
logger.warning(
"You seem to be running on multiple GPUs. "
"If you want to use multiple GPUs, please use torchrun."
)
return num_devices
if "target_batch_size" in self.training_args:
target_batch_size = self.training_args["target_batch_size"]
num_devices = get_num_devices()
num_devices = max(num_devices, 1)
self.training_args["per_device_train_batch_size"] = (
target_batch_size // num_devices
)
logger.info(f"Target batch size: {target_batch_size}")
logger.info(f"Number of compute devices: {num_devices}")
logger.info(
f"Setting per_device_train_batch_size "
f"to {self.training_args['per_device_train_batch_size']}"
)
if is_world_process_zero():
self.logger.summary[
"computed_per_device_train_batch_size"
] = self.training_args["per_device_train_batch_size"]
self.logger.summary["computed_num_process"] = num_devices
if "target_eval_batch_size" in self.training_args:
target_batch_size = self.training_args["target_eval_batch_size"]
num_devices = get_num_devices()
num_devices = max(num_devices, 1)
self.training_args["per_device_eval_batch_size"] = (
target_batch_size // num_devices
)
logger.info(f"Target eval batch size: {target_batch_size}")
logger.info(f"Number of compute devices: {num_devices}")
logger.info(
f"Setting per_device_eval_batch_size "
f"to {self.training_args['per_device_eval_batch_size']}"
)
if is_world_process_zero():
self.logger.summary[
"computed_per_device_eval_batch_size"
] = self.training_args["per_device_eval_batch_size"]
self.logger.summary["computed_num_process"] = num_devices
def write_meta_data(self):
if not is_world_process_zero():
return
gpu_info = gpu_utils.get_cuda_info()
if len(gpu_info) != 0:
# log_obj = {f"gpus_info/#{i}/": gi for i, gi in enumerate(gpu_info)}
# self.logger.summary.update(log_obj)
logger.info(f"GPUs Info: \n{json.dumps(gpu_info, indent=4)}")
metadata = {"exp_name": self.exp_name, "gpus_info": gpu_info}
with open(self.exp_root / "metadata.json", "w") as f:
f.write(json.dumps(metadata, indent=4, sort_keys=True))
conf_path = self.exp_root / "config.json"
if conf_path.exists():
self.logger.save(str(conf_path.absolute()), policy="now")
dotenv_path = self.exp_root / "dotenv.txt"
with dotenv_path.open("w") as f:
for k, v in os.environ.items():
if k.startswith("APP_"):
f.write(f"{k}={v}\n")
self.logger.save(str(dotenv_path.absolute()), policy="now")
@property
def logger(self) -> Run:
if not hasattr(self, "_logger"):
if wandb.run is None and is_world_process_zero():
if self.debug_mode:
mode = "disabled"
else:
mode = None
wandb_entity = self.global_vars.get("wandb_entity", None)
settings = wandb.Settings()
settings.update(
_save_requirements=True,
_disable_meta=False,
)
wandb.init(
config=self.config_dict,
project=self.project_name,
name=self.exp_name,
resume="allow",
mode=mode,
force=True,
entity=wandb_entity,
)
self._logger = wandb.run
return self._logger
def get_last_checkpoint_path(self) -> Optional[Path]:
checkpoint_dir = self.exp_root / "checkpoints"
checkpoint_dir.mkdir(parents=True, exist_ok=True)
last_checkpoint = get_last_checkpoint(checkpoint_dir)
if last_checkpoint is not None:
last_checkpoint = Path(last_checkpoint)
return last_checkpoint
def create_model(self) -> Model:
lazy_model = copy.deepcopy(self.lazy_model)
model_type = lazy_model.pop("type", Model.default_implementation)
if model_type is None:
raise ValueError("Cannot recognize model")
model_constructor = Model.by_name(model_type)
model_class = Model.resolve_class_name(model_type)[0]
from_pretrained = lazy_model.pop("from_pretrained", False)
pretrained_path = lazy_model.pop("pretrained_path", None)
model_kwargs = create_kwargs(
model_constructor,
model_class,
params=Params(lazy_model),
tokenizer=self.tokenizer,
)
has_handled_tokenizer = False
if from_pretrained:
if pretrained_path is not None:
exp_root_dir = self.global_vars["dirs"]["experiments"]
arg = str(Path(exp_root_dir) / pretrained_path / "checkpoints")
has_handled_tokenizer = True
else:
arg = lazy_model["hf_model_name"]
_ = model_kwargs.pop("tokenizer")
logger.info(f"Loading initial model weights from {arg}...")
model = model_class.from_pretrained(arg, **model_kwargs)
else:
model = model_constructor(**model_kwargs)
has_handled_tokenizer = True
if hasattr(model, "handle_tokenizer") and not has_handled_tokenizer:
model.handle_tokenizer(self.tokenizer)
return model
def create_trainer(self, stage: ExperimentStage, **kwargs) -> Seq2SeqTrainer:
if "model" not in kwargs:
kwargs["model"] = self.create_model()
model = kwargs.get("model")
eval_split_name = kwargs.pop("eval_split_name", None)
training_args = copy.deepcopy(self.training_args)
training_args["output_dir"] = str(self.exp_root / "checkpoints")
training_args["report_to"] = "none"
_ = training_args.pop("target_batch_size", None)
_ = training_args.pop("target_eval_batch_size", None)
_ = training_args.pop("auto_compute_batch_size", None)
if kwargs.get("eval_dataset", None) is None:
training_args["evaluation_strategy"] = "no"
callbacks = [CustomWandbCallback()]
early_stopping = training_args.pop("early_stopping", None)
if early_stopping is not None:
logger.info(f"Enabled early stopping at {early_stopping}")
callbacks.append(
EarlyStoppingCallback(early_stopping_patience=early_stopping)
)
user_callbacks = training_args.pop("callbacks", None)
if user_callbacks is not None:
for config_obj in user_callbacks:
cb = Callback.from_params(Params(config_obj))
cb.init(
self,
kwargs.get("eval_dataset", None),
eval_split_name,
)
callbacks.append(cb)
trainer_type = training_args.pop("type", BaseTrainer.default_implementation)
trainer_class = BaseTrainer.resolve_class_name(trainer_type)[0]
training_args = CustomTrainingArguments(**training_args)
data_collator = self.dl_factory.get_collate_fn(stage)
if stage == ExperimentStage.TRAINING:
eval_data_collator = self.dl_factory.get_collate_fn(
ExperimentStage.VALIDATION
)
else:
eval_data_collator = None
try:
data_collator.model = model
except Exception as exp:
logger.warning(exp)
trainer = trainer_class(
args=training_args,
tokenizer=getattr(self.dl_factory, "tokenizer", None),
data_collator=self.dl_factory.get_collate_fn(stage),
compute_metrics=self.dl_factory.get_compute_metric_fn(stage),
callbacks=callbacks,
**kwargs,
)
trainer.eval_data_collator = eval_data_collator
for cb in callbacks:
if hasattr(cb, "set_trainer") and callable(cb.set_trainer):
cb.set_trainer(trainer)
return trainer
def log_number_of_parameters(self, model: nn.Module):
try:
total_parameters = sum(p.numel() for p in model.parameters())
trainable_parameters = sum(
p.numel() for p in model.parameters() if p.requires_grad
)
logger.info(
"######## Number of Parameters ########\n"
f"{get_human_readable_count(trainable_parameters)} Trainable params \n"
f"{get_human_readable_count(total_parameters - trainable_parameters)} Non-trainable params \n"
f"{get_human_readable_count(total_parameters)} Total params \n"
"######################################\n"
)
if is_world_process_zero():
self.logger.summary.update(
{
"num_trainable_params": trainable_parameters,
"num_non_trainable_params": total_parameters
- trainable_parameters,
"num_total_params": total_parameters,
},
)
except Exception as exp:
logger.warning("Couldn't log the number of parameters because of ")
logger.warning(str(exp))
def log_metrics_to_console(
self, split: str = "None", metrics: Dict[str, Any] = None
):
if not is_world_process_zero():
return
if metrics is None:
return
log_str = f"***** {split} metrics *****\n"
metrics_formatted = metrics_format(None, metrics)
k_width = max(len(str(x)) for x in metrics_formatted.keys())
v_width = max(len(str(x)) for x in metrics_formatted.values())
for key in sorted(metrics_formatted.keys()):
log_str += f" {key: <{k_width}} = {metrics_formatted[key]:>{v_width}}\n"
logger.info(log_str)
def _load_last_checkpoint(self, trainer: Seq2SeqTrainer) -> Optional[str]:
last_checkpoint = self.get_last_checkpoint_path()
if last_checkpoint is not None:
logger.info(f"Loading checkpoints from {last_checkpoint}")
state_dict = torch.load(last_checkpoint / WEIGHTS_NAME, map_location="cpu")
trainer._load_state_dict_in_model(state_dict)
else:
logger.info(f"Initializing model from scratch")
return last_checkpoint
def _load_best_checkpoint(self, trainer) -> str:
ckpt_dir = self.exp_root / "checkpoints"
last_checkpoint = self.get_last_checkpoint_path()
if (ckpt_dir / "trainer_state.json").exists():
trainer_state = json.load((ckpt_dir / "trainer_state.json").open())
best_model_checkpoint = trainer_state.get("best_model_checkpoint", None)
elif (
last_checkpoint is not None
and (last_checkpoint / "trainer_state.json").exists()
):
trainer_state = json.load((last_checkpoint / "trainer_state.json").open())
best_model_checkpoint = trainer_state.get("best_model_checkpoint", None)
else:
best_model_checkpoint = None
if best_model_checkpoint is None:
logger.warning("Could not find the best checkpoint")
raise ValueError("Best checkpoint not found")
logger.info(f"Loading checkpoints from {best_model_checkpoint}")
state_dict = torch.load(
Path(best_model_checkpoint) / WEIGHTS_NAME, map_location="cpu"
)
trainer._load_state_dict_in_model(state_dict)
return best_model_checkpoint
def train(self, eval_split: str = "valid", train_split: str = "train"):
logger.info("\n" * 5 + "*" * 100)
logger.info(f"* Training on {train_split} and evaluating on {eval_split}")
logger.info("*" * 100 + "\n" * 5)
torch.cuda.empty_cache()
model = self.create_model()
eval_ds_path = self.dl_factory.get_ds_file_path(
ExperimentStage.from_split(eval_split)
)
eval_dataset = self.dl_factory.get_dataset(
stage=ExperimentStage.VALIDATION, path=eval_ds_path
)
if eval_dataset is None:
logger.info(
"No evaluation dataset found. Disabled evaluation during training."
)
train_ds_path = self.dl_factory.get_ds_file_path(
ExperimentStage.from_split(train_split)
)
train_dataset = self.dl_factory.get_dataset(
stage=ExperimentStage.TRAINING, path=train_ds_path
)
trainer = self.create_trainer(
ExperimentStage.TRAINING,
model=model,
train_dataset=train_dataset,
eval_dataset=eval_dataset,
eval_split_name=eval_split,
)
self.log_number_of_parameters(trainer.model)
last_checkpoint = self.get_last_checkpoint_path()
if last_checkpoint is not None:
logger.info(f"Loading checkpoints from {last_checkpoint}")
else:
logger.info(f"Initializing training from scratch")
auto_compute_batch_size = self.training_args.get(
"auto_compute_batch_size", False
)
if not auto_compute_batch_size:
train_result = trainer.train(resume_from_checkpoint=last_checkpoint)
else:
# Compute the maximum batch size fits into the gpu
# and instead increase gradient accumulation steps
training_is_done = False
orig_training_args = copy.deepcopy(self.training_args)
while not training_is_done:
try:
train_result = trainer.train(resume_from_checkpoint=last_checkpoint)
training_is_done = True
except RuntimeError as e:
if "out of memory" not in str(e):
raise e
try:
is_oom_from_eval = trainer.control.should_evaluate
except:
is_oom_from_eval = False
if is_oom_from_eval:
logger.warning("OOM during evaluation.")
curr_batch_size = self.training_args[
"per_device_eval_batch_size"
]
self.training_args["per_device_eval_batch_size"] = (
curr_batch_size // 2
)
logger.info(
f"Eval Batch size is too large. Reducing it to "
f"{self.training_args['per_device_eval_batch_size']} "
)
else:
# Divide the batch_size in half and increase the accumulation steps
curr_batch_size = self.training_args[
"per_device_train_batch_size"
]
self.training_args["per_device_train_batch_size"] = (
curr_batch_size // 2
)
self.training_args["gradient_accumulation_steps"] = (
self.training_args.get("gradient_accumulation_steps", 1) * 2
)
logger.info(
f"Batch size is too large. Reducing it to "
f"{self.training_args['per_device_train_batch_size']} "
f"and increasing gradient accumulation steps to "
f"{self.training_args['gradient_accumulation_steps']}"
)
# Empty the cache
torch.cuda.empty_cache()
# Recreate the trainer with the new batch size
trainer = self.create_trainer(
ExperimentStage.TRAINING,
model=model,
train_dataset=train_dataset,
eval_dataset=eval_dataset,
eval_split_name=eval_split,
)
last_checkpoint = self.get_last_checkpoint_path()
# Make sure all distributed processes are in sync
if dist.is_available() and dist.is_initialized():
dist.monitored_barrier(
timeout=datetime.timedelta(minutes=15), wait_all_ranks=True
)
if trainer.is_world_process_zero():
self.logger.summary["auto_computed_batch_size"] = self.training_args[
"per_device_train_batch_size"
]
self.logger.summary[
"auto_computed_eval_batch_size"
] = self.training_args["per_device_eval_batch_size"]
self.logger.summary[
"auto_computed_grad_acc_steps"
] = self.training_args.get("gradient_accumulation_steps", 1)
self.training_args = orig_training_args
trainer.save_model()
metrics = train_result.metrics
if isinstance(train_dataset, Sized) and trainer.is_world_process_zero():
metrics["num_train_samples"] = len(trainer.train_dataset)
self.logger.summary.update(
{"num_train_samples": len(trainer.train_dataset)}
)
self.log_metrics_to_console("train", metrics)
trainer.save_metrics("train", metrics)
trainer.save_state()
def evaluate(self, split: str = "test", load_best: bool = True):
logger.info(f"*** Evaluate on {split} ***")
torch.cuda.empty_cache()
if "load_best_model_at_end" in self.training_args:
self.training_args.pop("load_best_model_at_end")
stage = ExperimentStage.PREDICTION
trainer = self.create_trainer(stage)
if load_best:
try:
self._load_best_checkpoint(trainer)
except:
logger.info("Loading last checkpoint...")
self._load_last_checkpoint(trainer)
else:
logger.info("Loading last checkpoint...")
self._load_last_checkpoint(trainer)
ds_path = self.dl_factory.get_ds_file_path(ExperimentStage.from_split(split))
dataset = self.dl_factory.get_dataset(stage=stage, path=ds_path)
if dataset is None:
logger.error(f"No dataset found for split = {split}")
return
if dataset is None:
logger.error(f"No dataset found for split = {split}")
return
metrics = trainer.evaluate(
eval_dataset=dataset, metric_key_prefix=f"eval_{split}"
)
if isinstance(dataset, Sized) and trainer.is_world_process_zero():
metrics[f"eval_{split}_num_samples"] = len(dataset)
self.logger.summary.update({f"eval_{split}_num_samples": len(dataset)})
self.log_metrics_to_console(f"eval_{split}", metrics)
trainer.save_metrics(f"eval_{split}", metrics)
def predict(
self,
split: str = "test",
enable_metrics: bool = False,
load_best: bool = True,
force: bool = False,
):
logger.info("\n" * 5 + "*" * 100)
logger.info(f"* Predict on {split} *")
logger.info("*" * 100 + "\n" * 5)
torch.cuda.empty_cache()
if "load_best_model_at_end" in self.training_args:
self.training_args.pop("load_best_model_at_end")
def load_trainer():
if load_best:
try:
best_ckpt_path = self._load_best_checkpoint(trainer)
if trainer.is_world_process_zero():
self.logger.summary.update(
{f"predict_{split}_ckpt_path": f"best at {best_ckpt_path}"}
)
except:
logger.info("Loading last checkpoint...")
last_ckpt_path = self._load_last_checkpoint(trainer)
if trainer.is_world_process_zero():
self.logger.summary.update(
{f"predict_{split}_ckpt_path": f"last at {last_ckpt_path}"}
)
else:
logger.info("Loading last checkpoint...")
self._load_last_checkpoint(trainer)
last_ckpt_path = self._load_last_checkpoint(trainer)
if trainer.is_world_process_zero():
self.logger.summary.update(
{f"predict_{split}_ckpt_path": f"last at {last_ckpt_path}"}
)
trainer = self.create_trainer(ExperimentStage.PREDICTION)
load_trainer()
stage = ExperimentStage.PREDICTION
ds_path = self.dl_factory.get_ds_file_path(ExperimentStage.from_split(split))
dataset = self.dl_factory.get_dataset(stage=stage, path=ds_path)
if dataset is None:
logger.error(f"No dataset found for split = {split}")
return
output_test_preds_file = self.exp_root / f"pred_out_{split}.jsonl"
if not force:
# Check if the predictions already exist and the
# length of the dataset is the same as the predictions
if output_test_preds_file.exists():
try:
pred_objs = []
with jsonlines.open(output_test_preds_file) as reader:
for obj in reader:
pred_objs.append(obj)
if len(pred_objs) == len(dataset):
logger.info(
f"Predictions already exist for {split} with length {len(pred_objs)}"
)
return
except:
pass
auto_compute_batch_size = self.training_args.get(
"auto_compute_batch_size", False
)
if not auto_compute_batch_size:
test_results = trainer.predict(dataset, metric_key_prefix=f"pred_{split}")
else:
# Compute the maximum batch size fits into the gpu
# and instead increase gradient accumulation steps
prediction_is_done = False
orig_training_args = copy.deepcopy(self.training_args)
while not prediction_is_done:
try:
test_results = trainer.predict(
dataset, metric_key_prefix=f"pred_{split}"
)
prediction_is_done = True
except RuntimeError as e:
if "out of memory" not in str(e):
raise e
# Divide the batch_size in half
curr_batch_size = self.training_args["per_device_eval_batch_size"]
self.training_args["per_device_eval_batch_size"] = (
curr_batch_size // 2
)
logger.info(
f"Eval Batch size is too large. Reducing it to "
f"{self.training_args['per_device_eval_batch_size']} "
)
# Empty the cache
torch.cuda.empty_cache()
# Recreate the trainer with the new batch size
trainer = self.create_trainer(ExperimentStage.PREDICTION)
load_trainer()
# Make sure all distributed processes are in sync
if dist.is_available() and dist.is_initialized():
dist.monitored_barrier(
timeout=datetime.timedelta(minutes=15), wait_all_ranks=True
)
if trainer.is_world_process_zero():
self.logger.summary[
"auto_computed_batch_size_predict"
] = self.training_args["per_device_eval_batch_size"]
self.training_args = orig_training_args
if trainer.is_world_process_zero():
metrics = test_results.metrics
metrics[f"pred_{split}_num_samples"] = len(dataset)
self.log_metrics_to_console(f"pred_{split}", metrics)
trainer.save_metrics(f"pred_{split}", metrics)
trainer.log(metrics)
preds = test_results.predictions
if isinstance(test_results.predictions, tuple):
preds = preds[0]
if len(preds.shape) == 3:
preds = np.argmax(preds, axis=-1)
with output_test_preds_file.open("w") as writer:
all_objs = []
for batch_preds in tqdm(
chunks(preds, 128),
total=len(preds) // 128,
desc="Decoding predictions",
):
# Convert -100 to 0
batch_preds = np.where(
batch_preds == -100, self.tokenizer.pad_token_id, batch_preds
)
pred_texts = self.tokenizer.batch_decode(
batch_preds,
skip_special_tokens=True,
clean_up_tokenization_spaces=False,
)
pred_texts = [pred.strip() for pred in pred_texts]
for pt in pred_texts:
all_objs.append({"prediction": pt})
jsonlines.Writer(writer).write_all(all_objs)
self.logger.save(str(output_test_preds_file.absolute()), policy="now")
def train_and_evaluate(
self,
eval_split: str = "valid",
test_split: str = "test",
load_best: bool = True,
):
self.train(eval_split)
self.evaluate(test_split, load_best=load_best)
def combine_pred(self, split: str = "test", force: bool = False):
if not is_world_process_zero():
return
logger.info("\n" * 5 + "*" * 100)
logger.info(f"* Combining predictions for split = {split}")
logger.info("*" * 100 + "\n" * 5)
prediction_path = self.exp_root / f"pred_out_{split}.jsonl"
logger.info(f"Prediction path: {prediction_path}")
assert prediction_path.exists()
stage = ExperimentStage.from_split(split)
import jsonlines
import diff_match_patch as dmp_module
lines_out = []
with jsonlines.open(str(prediction_path)) as reader:
for obj in reader:
lines_out.append(obj)
input_ds = self.dl_factory.get_dataset(stage)
assert len(input_ds) == len(lines_out)
combined_file = self.exp_root / f"pred_combined_{split}.jsonl"
if not force:
# Check if the predictions already exist and the
# length of the dataset is the same as the predictions
if combined_file.exists():
try:
pred_objs = []
with jsonlines.open(combined_file) as reader:
for obj in reader:
pred_objs.append(obj)
if len(pred_objs) == len(input_ds):
logger.info(
f"Combined predictions already exist for {split} with length {len(pred_objs)}"
)
return
except:
pass
pred_table = wandb.Table(
columns=["idx", "input", "gold", "prediction", "is_correct", "diff"]
)
with jsonlines.open(str(combined_file), mode="w") as writer:
for (obj_ds, obj_pred) in tqdm(zip(input_ds, lines_out)):
prompt = self.tokenizer.decode(
obj_ds["input_ids"],
skip_special_tokens=True,
clean_up_tokenization_spaces=False,
)
labels = [t for t in obj_ds["labels"] if t != -100]
target = self.tokenizer.decode(
labels, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
idx = obj_ds["idx"]
obj_pred["prompt"] = prompt
obj_pred["target"] = target
obj_pred["idx"] = idx
writer.write(obj_pred)
prediction = obj_pred["prediction"]
if prediction[: len(prompt)] == prompt:
prediction = prediction[len(prompt) :]
is_correct = prediction == target
if not is_correct:
dmp = dmp_module.diff_match_patch()
diff = dmp.diff_main(target, prediction)
dmp.diff_cleanupSemantic(diff)
diff = dmp.diff_prettyHtml(diff)
diff = wandb.Html(diff)
else:
diff = wandb.Html("")
pred_table.add_data(idx, prompt, target, prediction, is_correct, diff)
if os.environ.get("WANDB_MODE", "online") != "offline":
# For some reason, this doesn't work in offline mode
self.logger.log({f"pred_{split}/model_outputs": pred_table})
self.logger.save(str(combined_file.absolute()), policy="now")
logger.info(f"Done combing!")
def hp_step(
self,
eval_split: str = "valid",
load_best: bool = True,
):
self.train(eval_split)
self.predict(eval_split, load_best=load_best, enable_metrics=True)
self.combine_pred(eval_split)
self.analyze_all(load_best=load_best, split=eval_split)
def full_step(
self,