app.py

import torch
from peft import PeftModel
import transformers
import gradio as gr

from transformers import AutoModelForCausalLM, AutoTokenizer, GenerationConfig

tokenizer = AutoTokenizer.from_pretrained("bigscience/bloom-1b1")

BASE_MODEL = "bigscience/bloom-1b1"
LORA_WEIGHTS = "naot97/bloom1b1-zalo-test"

if torch.cuda.is_available():
    device = "cuda"
else:
    device = "cpu"

try:
    if torch.backends.mps.is_available():
        device = "mps"
except:
    pass

if device == "cuda":
    model = AutoModelForCausalLM.from_pretrained(
        BASE_MODEL,
        load_in_8bit=False,
        torch_dtype=torch.float16,
        device_map="auto",
    )
    model = PeftModel.from_pretrained(
        model, LORA_WEIGHTS, torch_dtype=torch.float16, force_download=True
    )
elif device == "mps":
    model = LlamaForCausalLM.from_pretrained(
        BASE_MODEL,
        device_map={"": device},
        torch_dtype=torch.float16,
    )
    model = PeftModel.from_pretrained(
        model,
        LORA_WEIGHTS,
        device_map={"": device},
        torch_dtype=torch.float16,
    )
else:
    model = AutoModelForCausalLM.from_pretrained(
        BASE_MODEL, device_map={"": device}, low_cpu_mem_usage=True
    )
    model = PeftModel.from_pretrained(
        model,
        LORA_WEIGHTS,
        device_map={"": device},
    )

if device != "cpu":
    model.half()
model.eval()
if torch.__version__ >= "2":
    model = torch.compile(model)

def check_number(text):
  count = 0
  for word in text.split():
    if word.isnumeric():
      count += 1

  return count >= 2

def evaluate(
    instruction,
    **kwargs,
):
    temperature=0.1
    top_p=0.75
    top_k=40
    num_beams=4
    max_new_tokens=128
    prompt = instruction
    
    inputs = tokenizer(prompt, return_tensors="pt")
    input_ids = inputs["input_ids"].to(device)

    if check_number(prompt):
        generation_config = GenerationConfig(
            temperature=temperature,
            top_p=top_p,
            top_k=top_k,
            num_beams=num_beams,
            **kwargs,
        )
    else:
        generation_config = GenerationConfig(
            temperature=temperature,
            top_p=top_p,
            top_k=top_k,
            do_sample = True,
            **kwargs,
        )
    
    # with torch.cuda.amp.autocast():
    #     output_tokens = model.generate(**inputs, generation_config=generation_config)
    # output = tokenizer.decode(output_tokens[0], skip_special_tokens=True)

    with torch.no_grad():
        generation_output = model.generate(
            input_ids=input_ids,
            generation_config=generation_config,
            return_dict_in_generate=True,
            output_scores=True,
            max_new_tokens=max_new_tokens,
        )
    s = generation_output.sequences[0]
    output = tokenizer.decode(s, skip_special_tokens=True)

    return output[len(prompt):]


g = gr.Interface(
    fn=evaluate,
    inputs= gr.components.Textbox(
            lines=2, label="Instruction", placeholder="Tell me raw text."
    ),
    outputs= gr.inputs.Textbox(
            lines=5,
            label="Output",
    ),
    title="bloom 1b1",
    description="",
)
g.queue(concurrency_count=1)
g.launch()

# Old testing code follows.

"""
if __name__ == "__main__":
    # testing code for readme
    for instruction in [
        "Tell me about alpacas.",
        "Tell me about the president of Mexico in 2019.",
        "Tell me about the king of France in 2019.",
        "List all Canadian provinces in alphabetical order.",
        "Write a Python program that prints the first 10 Fibonacci numbers.",
        "Write a program that prints the numbers from 1 to 100. But for multiples of three print 'Fizz' instead of the number and for the multiples of five print 'Buzz'. For numbers which are multiples of both three and five print 'FizzBuzz'.",
        "Tell me five words that rhyme with 'shock'.",
        "Translate the sentence 'I have no mouth but I must scream' into Spanish.",
        "Count up from 1 to 500.",
    ]:
        print("Instruction:", instruction)
        print("Response:", evaluate(instruction))
        print()
"""