train_instruct.py

#!/usr/bin/env python
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Supervised fine-tuning script for decoder language models.
"""

import logging
import random
import sys
import datetime

import pandas as pd
import datasets
import torch
import transformers
from transformers import set_seed, DataCollatorForLanguageModeling,AutoModelForCausalLM
from datasets import load_dataset, Dataset, concatenate_datasets

from accelerate import Accelerator
from src.alignment import (
    DataArguments,
    H4ArgumentParser,
    ModelArguments,
    SFTConfig,
    # apply_chat_template,
    # get_datasets,
    get_checkpoint,
    get_kbit_device_map,
    get_peft_config,
    get_quantization_config,
    # get_tokenizer,
)
# from trl import SFTConfig
from trl import SFTTrainer, setup_chat_format
from src.data import get_datasets, apply_chat_template
from src.model import get_tokenizer


logger = logging.getLogger(__name__)


def main():
    parser = H4ArgumentParser((ModelArguments, DataArguments, SFTConfig))
    model_args, data_args, training_args = parser.parse()

    # Set seed for reproducibility
    set_seed(training_args.seed)

    # accelerator = Accelerator()

    ###############
    # Setup logging
    ###############
    logging.basicConfig(
        format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
        datefmt="%Y-%m-%d %H:%M:%S",
        handlers=[logging.StreamHandler(sys.stdout)],
    )
    log_level = training_args.get_process_log_level()
    logger.setLevel(log_level)
    datasets.utils.logging.set_verbosity(log_level)
    transformers.utils.logging.set_verbosity(log_level)
    transformers.utils.logging.enable_default_handler()
    transformers.utils.logging.enable_explicit_format()

    # Log on each process a small summary
    logger.warning(
        f"Process rank: {training_args.local_rank}, device: {training_args.device}, n_gpu: {training_args.n_gpu}"
        + f" distributed training: {bool(training_args.local_rank != -1)}, 16-bits training: {training_args.fp16}"
    )
    logger.info(f"Model parameters {model_args}")
    logger.info(f"Data parameters {data_args}")
    logger.info(f"Training/evaluation parameters {training_args}")

        # Check for last checkpoint
    last_checkpoint = get_checkpoint(training_args)
    if last_checkpoint is not None and training_args.resume_from_checkpoint is None:
        logger.info(f"Checkpoint detected, resuming training at {last_checkpoint=}.")

    ###############
    # Load datasets
    ###############
   
    mainframe_instruct_ds = Dataset.from_pandas(
        pd.read_feather(
            ".data/mainframegpt_instructions_vananh_20240209.feather"
        )
    )
    mainframe_oss_instruct_ds = Dataset.from_pandas(
        pd.read_feather(
            "./data/mainframegpt_oss_instruct.feather"
        )
    )
    mainframe_self_instruct_ds = Dataset.from_pandas(
        pd.read_feather(
            "./data/mainframegpt_self_instruct_2151.feather"
        )
    )
    slim_orca_ds = load_dataset("Open-Orca/SlimOrca-Dedup", cache_dir="./hf_cache/datasets")

    raw_datasets = concatenate_datasets([mainframe_instruct_ds, slim_orca_ds["train"]]).shuffle(seed=42)
    raw_datasets = raw_datasets.train_test_split(test_size=0.1)
    logger.info(
        f"Training on the following datasets and their proportions: {[split + ' : ' + str(dset.num_rows) for split, dset in raw_datasets.items()]}"
    )
    column_names = list(raw_datasets["train"].features)

    ################
    # Load tokenizer
    ################
    tokenizer = get_tokenizer(model_args, data_args)

    #####################
    # Apply chat template
    #####################
    raw_datasets = raw_datasets.map(
        apply_chat_template,
        fn_kwargs={"tokenizer": tokenizer, "task": "sft"},
        num_proc=data_args.preprocessing_num_workers,
        remove_columns=column_names,
        desc="Applying chat template",
    )
    train_dataset = raw_datasets["train"]
    eval_dataset = raw_datasets["test"]

    data_collator = DataCollatorForLanguageModeling(
        tokenizer=tokenizer, 
        mlm=False,
        return_tensors='pt'
    )

    #######################
    # Load pretrained model
    #######################
    logger.info("*** Load pretrained model ***")
    torch_dtype =(
         model_args.torch_dtype if model_args.torch_dtype in ["auto", None] else getattr(torch, model_args.torch_dtype)
    )
    quantization_config = get_quantization_config(model_args)

    model_kwargs = dict(
        revision=model_args.model_revision,
        trust_remote_code=model_args.trust_remote_code,
        use_flash_attention_2=model_args.use_flash_attention_2,
        torch_dtype=torch_dtype,
        use_cache=False if training_args.gradient_checkpointing else True,
        device_map=get_kbit_device_map() if quantization_config is not None else None,
        quantization_config=quantization_config,
    )
    print(model_kwargs)
    print(type(torch_dtype))

    model = model_args.model_name_or_path
    # For ChatML we need to add special tokens and resize the embedding layer
    if "<|im_start|>" in tokenizer.chat_template and "gemma-tokenizer-chatml" not in tokenizer.name_or_path:
        model = AutoModelForCausalLM.from_pretrained(model_args.model_name_or_path, **model_kwargs)
        model, tokenizer = setup_chat_format(model, tokenizer)
        model_kwargs = None

    logger.info("*** Model loaded! ***")

    ########################
    # Initialize the Trainer
    ########################
    trainer = SFTTrainer(
        model=model,
        model_init_kwargs=model_kwargs,
        args=training_args,
        train_dataset=train_dataset,
        eval_dataset=eval_dataset,
        dataset_text_field="text",
        max_seq_length=training_args.max_seq_length,
        tokenizer=tokenizer,
        packing=True,
        peft_config=get_peft_config(model_args),
        neftune_noise_alpha=5,
        data_collator=data_collator,
    )

    ###############
    # Training loop
    ###############
    logger.info("*** Train ***")
    checkpoint = None
    if training_args.resume_from_checkpoint is not None:
        checkpoint = training_args.resume_from_checkpoint
    elif last_checkpoint is not None:
        checkpoint = last_checkpoint
    train_result = trainer.train(resume_from_checkpoint=checkpoint)
    metrics = train_result.metrics
    metrics["train_samples"] = len(train_dataset)
    trainer.log_metrics("train", metrics)
    trainer.save_metrics("train", metrics)
    trainer.save_state()

    ##########
    # Evaluate
    ##########
    if training_args.do_eval:
        logger.info("*** Evaluate ***")
        metrics = trainer.evaluate()
        metrics["eval_samples"] = len(eval_dataset)
        trainer.log_metrics("eval", metrics)
        trainer.save_metrics("eval", metrics)

    ##################################
    # Save model and create model card
    ##################################
    logger.info("*** Save model ***")
    trainer.save_model(training_args.output_dir)
    logger.info(f"Model saved to {training_args.output_dir}")

    kwargs = {
        "finetuned_from": model_args.model_name_or_path,
        "dataset": list(data_args.dataset_mixer.keys()),
        "dataset_tags": list(data_args.dataset_mixer.keys()),
        "tags": ["alignment-handbook"],
    }
    if trainer.accelerator.is_main_process:
        trainer.create_model_card(**kwargs)
        # Restore k,v cache for fast inference
        trainer.model.config.use_cache = True
        trainer.model.config.save_pretrained(training_args.output_dir)

    if training_args.push_to_hub is True:
        logger.info("Pushing to hub...")
        trainer.push_to_hub(**kwargs)

    logger.info("*** Training complete ***")

if __name__ == "__main__":
    main()