more tweaks to do pre-training with bettertransformers

scripts/finetune.py

@@ -14,6 +14,7 @@ import torch
 import yaml
 
 # add src to the pythonpath so we don't need to pip install this
+from datasets import Dataset
 from optimum.bettertransformer import BetterTransformer
 from transformers import GenerationConfig
 
@@ -204,6 +205,7 @@ def train(
             train_dataset = load_pretraining_dataset(
                 pretraining_dataset, tokenizer, max_tokens=cfg.sequence_len
             )
+            train_dataset = Dataset.from_list(list(train_dataset))
             eval_dataset = None
 
     if cfg.debug or "debug" in kwargs:

src/axolotl/utils/callbacks.py

@@ -2,6 +2,7 @@
 
 import os
 
+from optimum.bettertransformer import BetterTransformer
 from transformers import (
     TrainerCallback,
     TrainerControl,
@@ -30,3 +31,26 @@ class SavePeftModelCallback(TrainerCallback):  # pylint: disable=too-few-public-
         kwargs["model"].save_pretrained(peft_model_path)
 
         return control
+
+
+class SaveBetterTransformerModelCallback(
+    TrainerCallback
+):  # pylint: disable=too-few-public-methods
+    """Callback to save the BatterTransformer wrapped model"""
+
+    def on_save(
+        self,
+        args: TrainingArguments,
+        state: TrainerState,
+        control: TrainerControl,
+        **kwargs,
+    ):
+        checkpoint_folder = os.path.join(
+            args.output_dir,
+            f"{PREFIX_CHECKPOINT_DIR}-{state.global_step}",
+        )
+
+        model = BetterTransformer.reverse(kwargs["model"])
+        model.save_pretrained(checkpoint_folder)
+
+        return control

src/axolotl/utils/data.py

@@ -402,14 +402,16 @@ class PretrainingDatasetWrapper(IterableDataset):
         buffer = []
         for sample in load_dataset(
             self.dataset_path,
-            name="all",
-            split="train",
-            streaming=True,
-        ).shuffle(buffer_size=10000):
+        )["train"].shuffle():
             buffer += self.tokenizer(sample["text"])["input_ids"]
             buffer += [self.tokenizer.eos_token_id]
             while len(buffer) > self.max_tokens:
-                yield torch.tensor(buffer[: self.max_tokens])
+                input_ids = torch.tensor(buffer[: self.max_tokens])
+                yield {
+                    "input_ids": input_ids,
+                    "attention_mask": torch.ones(input_ids.size()),
+                    "labels": input_ids,
+                }
                 buffer = buffer[self.max_tokens :]
 
 

src/axolotl/utils/models.py

@@ -10,8 +10,8 @@ from typing import TYPE_CHECKING, Optional, Tuple  # noqa: F401
 import bitsandbytes as bnb
 import torch
 import transformers
-from transformers import PreTrainedModel  # noqa: F401
 from optimum.bettertransformer import BetterTransformer
+from transformers import PreTrainedModel  # noqa: F401
 from transformers import (
     AutoConfig,
     AutoModelForCausalLM,
@@ -116,7 +116,7 @@ def load_model(
         logging.info("patching with sdp attention")
         hijack_llama_sdp_attention()
 
-    if cfg.bf16:
+    if cfg.bf16 or cfg.bfloat16:
         torch_dtype = torch.bfloat16
     elif cfg.load_in_8bit or cfg.fp16 or cfg.float16:
         torch_dtype = torch.float16

src/axolotl/utils/trainer.py

@@ -15,7 +15,10 @@ from torch.optim.lr_scheduler import OneCycleLR
 from transformers import EarlyStoppingCallback, Trainer
 from transformers.trainer_pt_utils import get_parameter_names
 
-from axolotl.utils.callbacks import SavePeftModelCallback
+from axolotl.utils.callbacks import (
+    SaveBetterTransformerModelCallback,
+    SavePeftModelCallback,
+)
 from axolotl.utils.schedulers import InterpolatingLogScheduler
 
 
@@ -225,6 +228,9 @@ def setup_trainer(cfg, train_dataset, eval_dataset, model, tokenizer):
     ]:  # only save in rank 0
         callbacks.append(SavePeftModelCallback)
 
+    if hasattr(model, "use_bettertransformer") and model.use_bettertransformer is True:
+        callbacks.append(SaveBetterTransformerModelCallback)
+
     data_collator_kwargs = {
         "padding": True,
     }

src/axolotl/utils/validation.py

@@ -1,8 +1,10 @@
 """Module for validating config files"""
 
 import logging
+
 import torch
 
+
 def validate_config(cfg):
     if cfg.gradient_accumulation_steps and cfg.batch_size:
         raise ValueError(
@@ -50,14 +52,20 @@ def validate_config(cfg):
 
     if cfg.flash_optimum is True:
         if cfg.adapter:
-            logging.warning("BetterTransformers probably doesn't work with PEFT adapters")
+            logging.warning(
+                "BetterTransformers probably doesn't work with PEFT adapters"
+            )
         if cfg.fp16 or cfg.bf16:
             raise ValueError("AMP is not supported with BetterTransformer")
         if cfg.float16 is not True:
-            logging.warning("You should probably set float16 to true to load the model in float16 for BetterTransformers")
-        if torch.__version__.split(".")[0] < 2:
+            logging.warning(
+                "You should probably set float16 to true to load the model in float16 for BetterTransformers"
+            )
+        if int(torch.__version__.split(".")[0]) < 2:
             logging.warning("torch>=2.0.0 required")
-            raise ValueError(f"flash_optimum for BetterTransformers may not be used with {torch.__version__}")
+            raise ValueError(
+                f"flash_optimum for BetterTransformers may not be used with {torch.__version__}"
+            )
     # TODO
     # MPT 7b
     # https://github.com/facebookresearch/bitsandbytes/issues/25