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import os
import time
import warnings
import re
import gc
warnings.filterwarnings("ignore", category=UserWarning, module="torch._utils")
from transformers import GPT2LMHeadModel, GPT2Tokenizer
import torch
import gradio as gr
import psutil
# Print system resources for debugging
def print_system_resources():
memory = psutil.virtual_memory()
cpu_percent = psutil.cpu_percent(interval=1)
try:
with open('/sys/fs/cgroup/memory/memory.limit_in_bytes', 'r') as f:
mem_limit = min(int(f.read().strip()) / 1e9, 16.0)
except:
mem_limit = 16.0
print(f"Total physical memory (psutil): {memory.total/1e9:.2f} GB")
print(f"Container memory limit: {mem_limit:.2f} GB")
print(f"CPU usage: {cpu_percent}%")
print(f"Memory usage: {min(memory.used / (mem_limit * 1e9) * 100, 100):.1f}% ({memory.used/1e9:.2f}/{mem_limit:.2f} GB)")
print(f"Active processes: {len(psutil.pids())}")
# Print Gradio version for debugging
print(f"Gradio version: {gr.__version__}")
# Load model and tokenizer
model_id = "NlpHUST/gpt2-vietnamese"
try:
tokenizer = GPT2Tokenizer.from_pretrained(model_id)
model = GPT2LMHeadModel.from_pretrained(model_id)
except Exception as e:
print(f"Error loading model: {e}")
raise e
# Set pad_token_id to eos_token_id if not set
if tokenizer.pad_token_id is None:
tokenizer.pad_token_id = tokenizer.eos_token_id
model.config.pad_token_id = tokenizer.eos_token_id
# Set device
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
model.to(device)
model.eval()
# Apply quantization to reduce memory and speed up
model = torch.quantization.quantize_dynamic(
model, {torch.nn.Linear}, dtype=torch.qint8
)
print(f"Model quantized: {model.__class__.__name__}")
# Print device and memory info for debugging
print(f"Device: {device}")
print(f"Memory allocated: {torch.cuda.memory_allocated(device)/1e9:.2f} GB" if torch.cuda.is_available() else "CPU only")
print_system_resources()
def clean_text(text):
"""Normalize text by removing invalid characters and extra spaces."""
text = re.sub(r'[^\w\s.,!?àáâãèéêìíòóôõùúýăđĩũơưạảấầẩẫậắằẳẵặẹẻẽếềểễệỉịọỏốồổỗộớờởỡợụủứừửữựỳỵỷỹ]', '', text)
text = re.sub(r'\s+', ' ', text).strip()
return text
def generate_text(prompt, temperature=0.3, max_new_tokens=35, top_k=15, max_length=40):
try:
start_time = time.time()
# Debug memory before generation
print("Memory before generation:")
print_system_resources()
# Fixed parameters
repetition_penalty = 1.2
# Log parameters
print(f"Parameters: max_length={max_length}, temperature={temperature}, max_new_tokens={max_new_tokens}, top_k={top_k}, repetition_penalty={repetition_penalty}")
# Encode input with attention mask
encode_time = time.time()
inputs = tokenizer(
prompt,
return_tensors="pt",
padding=True,
truncation=True,
max_length=max_length
).to(device)
print(f"Encoding time: {time.time() - encode_time:.2f} seconds")
print(f"Input tokens: {len(inputs['input_ids'][0])}")
# Define EOS token IDs for '.', '!', '?'
eos_token_ids = [tokenizer.encode(s)[0] for s in ['.', '!', '?']]
print(f"EOS token IDs: {eos_token_ids}")
# Generate text
gen_time = time.time()
outputs = model.generate(
input_ids=inputs["input_ids"],
attention_mask=inputs["attention_mask"],
max_new_tokens=int(max_new_tokens),
min_length=3,
do_sample=True,
top_k=int(top_k),
temperature=temperature,
repetition_penalty=repetition_penalty,
pad_token_id=tokenizer.pad_token_id,
eos_token_id=eos_token_ids
)
gen_duration = time.time() - gen_time
print(f"Generation time: {gen_duration:.2f} seconds")
print(f"Tokens per second: {len(outputs[0]) / gen_duration:.2f}")
generated_text = tokenizer.decode(outputs[0], skip_special_tokens=True)
print(f"Raw output: {generated_text}")
print(f"Generated token count: {len(outputs[0])}")
cleaned_text = clean_text(generated_text)
print(f"Cleaned output: {cleaned_text}")
elapsed_time = time.time() - start_time
print(f"Total time: {elapsed_time:.2f} seconds")
# Clear memory cache
gc.collect()
if torch.cuda.is_available():
torch.cuda.empty_cache()
# Debug memory after generation
print("Memory after generation:")
print_system_resources()
return cleaned_text
except Exception as e:
return f"Error generating text: {e}"
# Gradio interface
demo = gr.Interface(
fn=generate_text,
inputs=[
gr.Textbox(
label="Nhập văn bản đầu vào",
placeholder="Viết gì đó bằng tiếng Việt...",
value="Hôm nay là một ngày đẹp trời" # Default text
),
gr.Slider(0.1, 0.7, value=0.3, step=0.1, label="Nhiệt độ (Temperature, 0.1-0.3 cho tốc độ nhanh và mạch lạc, 0.4-0.7 cho đa dạng hơn)"),
gr.Slider(25, 100, value=35, step=5, label="Số token mới tối đa (max_new_tokens, 25-50 cho tốc độ nhanh, 75-100 cho câu dài hơn)"),
gr.Slider(5, 30, value=15, step=5, label="Top K (top_k, 5-15 cho văn bản mạch lạc, 20-30 cho đa dạng hơn)"),
gr.Slider(30, 100, value=40, step=5, label="Độ dài tối đa (max_length, 30-50 cho tốc độ nhanh, 75-100 cho câu dài hơn)")
],
outputs="text",
title="Sinh văn bản tiếng Việt",
description="Dùng mô hình GPT-2 Vietnamese từ NlpHUST để sinh văn bản tiếng Việt. Chọn temperature 0.1-0.3, max_new_tokens 25-50, top_k 5-15, và max_length 30-50 để đạt thời gian <2 giây và văn bản mạch lạc. Dùng temperature 0.4-0.7, max_new_tokens 75-100, top_k 20-30, và max_length 75-100 cho câu dài và đa dạng hơn.",
allow_flagging="never"
)
if __name__ == "__main__":
demo.launch(server_name="0.0.0.0", server_port=7860) |