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更新 Mamba/mamba-main/train.py

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认知智能 2024-07-30 17:53:00 +08:00
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Mamba/mamba-main/train.py
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import os import os
import pandas as pd import pandas as pd
from transformers import AutoTokenizer, AutoModelForCausalLM, TrainingArguments, MambaConfig from transformers import AutoTokenizer, AutoModelForCausalLM, TrainingArguments, MambaConfig
from trl import SFTTrainer from trl import SFTTrainer
from peft import LoraConfig from peft import LoraConfig
from datasets import Dataset from datasets import Dataset
import torch
# 设置环境变量来避免内存碎片化 # 设置环境变量来避免内存碎片化
os.environ["PYTORCH_CUDA_ALLOC_CONF"] = "max_split_size_mb:128" os.environ["PYTORCH_CUDA_ALLOC_CONF"] = "max_split_size_mb:128"
# 数据文件夹路径 # 数据文件夹路径
data_folder = r'/mnt/Mamba/mamba-main/data/dataset' data_folder = r'/mnt/Mamba/mamba-main/data/dataset'
# 检查路径是否存在 # 检查路径是否存在
if not os.path.exists(data_folder): if not os.path.exists(data_folder):
raise ValueError(f"路径不存在: {data_folder}") raise ValueError(f"路径不存在: {data_folder}")
# 加载分词器和模型 # 加载分词器和模型
path = "/mnt/Mamba/mamba-130m-hf" # 模型路径 path = "/mnt/Mamba/mamba-130m-hf" # 模型路径
tokenizer = AutoTokenizer.from_pretrained(path, local_files_only=True) tokenizer = AutoTokenizer.from_pretrained(path, local_files_only=True)
model = AutoModelForCausalLM.from_pretrained(path, local_files_only=True, num_labels=8, use_mambapy=True) model = AutoModelForCausalLM.from_pretrained(path, local_files_only=True, num_labels=8, use_mambapy=True)
print("加载成功") print("加载成功")
# 配置训练参数 # 配置训练参数
training_args = TrainingArguments( training_args = TrainingArguments(
output_dir="./results", output_dir="./results",
num_train_epochs=3, num_train_epochs=3,
per_device_train_batch_size=12, # 减少批处理大小 per_device_train_batch_size=12, # 减少批处理大小
logging_dir='./logs', logging_dir='./logs',
logging_steps=10, logging_steps=10,
learning_rate=2e-3, learning_rate=2e-3,
gradient_accumulation_steps=2, # 使用梯度累积减少显存占用 gradient_accumulation_steps=2, # 使用梯度累积减少显存占用
fp16=True, # 启用混合精度训练 fp16=True, # 启用混合精度训练
) )
# LoRA配置 # LoRA配置
lora_config = LoraConfig( lora_config = LoraConfig(
r=8, # 低秩分解的秩 r=8, # 低秩分解的秩
target_modules=["x_proj", "embeddings", "in_proj", "out_proj"], target_modules=["x_proj", "embeddings", "in_proj", "out_proj"],
task_type="SEQ_CLS", # 序列分类任务类型 task_type="SEQ_CLS", # 序列分类任务类型
bias="none" bias="none"
) )
# 初始化Trainer # 初始化Trainer
trainer = SFTTrainer( trainer = SFTTrainer(
model=model, model=model,
tokenizer=tokenizer, tokenizer=tokenizer,
args=training_args, args=training_args,
peft_config=lora_config, peft_config=lora_config,
max_seq_length=512, # 设置max_seq_length参数 max_seq_length=512, # 设置max_seq_length参数
) )
# 分块加载和处理数据 # 分块加载和处理数据
chunksize = 40000 # 设置合适的分块大小,每次读取数据的行数 chunksize = 40000 # 设置合适的分块大小,每次读取数据的行数
def preprocess_data(chunk): def preprocess_data(chunk):
chunk = chunk.dropna() # 处理缺失值 chunk = chunk.dropna() # 处理缺失值
texts = chunk[["acc_x", "acc_y", "acc_z", "gyr_x", "gyr_y", "gyr_z", "mag_x", "mag_y", "mag_z"]].astype(str).apply( texts = chunk[["acc_x", "acc_y", "acc_z", "gyr_x", "gyr_y", "gyr_z", "mag_x", "mag_y", "mag_z"]].astype(str).apply(
' '.join, axis=1).tolist() ' '.join, axis=1).tolist()
labels = chunk["Person_id"].astype(int).tolist() # 确保标签是整数类型 labels = chunk["Person_id"].astype(int).tolist() # 确保标签是整数类型
encodings = tokenizer(texts, truncation=True, padding=True, max_length=1024) encodings = tokenizer(texts, truncation=True, padding=True, max_length=1024)
return {"input_ids": encodings["input_ids"], "attention_mask": encodings["attention_mask"], "labels": labels} return {"input_ids": encodings["input_ids"], "attention_mask": encodings["attention_mask"], "labels": labels}
# 读取训练数据并进行训练 # 读取训练数据并进行训练
train_file_path = os.path.join(data_folder, 'train_data.csv') train_file_path = os.path.join(data_folder, 'train_data.csv')
chunk_iter = pd.read_csv(train_file_path, chunksize=chunksize, header=0) chunk_iter = pd.read_csv(train_file_path, chunksize=chunksize, header=0)
for chunk in chunk_iter: for chunk in chunk_iter:
# 数据预处理 # 数据预处理
processed_data = preprocess_data(chunk) processed_data = preprocess_data(chunk)
dataset = Dataset.from_dict(processed_data) dataset = Dataset.from_dict(processed_data)
# 训练模型 # 训练模型
trainer.train_dataset = dataset trainer.train_dataset = dataset
trainer.train() trainer.train()
# 清理CUDA缓存 # 清理CUDA缓存
torch.cuda.empty_cache() torch.cuda.empty_cache()
# 保存训练后的模型 # 保存训练后的模型
model.save_pretrained("./trained_model") model.save_pretrained("./trained_model")
tokenizer.save_pretrained("./trained_model") tokenizer.save_pretrained("./trained_model")
print("模型保存成功") print("模型保存成功")
# 读取测试数据并进行预测 # 读取测试数据并进行预测
test_file_path = os.path.join(data_folder, 'test_data.csv') test_file_path = os.path.join(data_folder, 'test_data.csv')
test_data = pd.read_csv(test_file_path, header=0) test_data = pd.read_csv(test_file_path, header=0)
processed_test_data = preprocess_data(test_data) processed_test_data = preprocess_data(test_data)
test_dataset = Dataset.from_dict(processed_test_data) test_dataset = Dataset.from_dict(processed_test_data)
# 预测Person_id # 预测Person_id
predictions = trainer.predict(test_dataset) predictions = trainer.predict(test_dataset)
# 输出预测结果 # 输出预测结果
print(predictions) print(predictions)