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generate.py
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generate.py
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#
# Copyright 2016 The BigDL Authors.
#
# 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.
#
import torch
import time
import argparse
import numpy as np
from transformers import Qwen2VLForConditionalGeneration, AutoProcessor
from qwen_vl_utils import process_vision_info
from ipex_llm import optimize_model
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='Predict Tokens using generate() API for Qwen2-VL-7B-Instruct model')
parser.add_argument('--repo-id-or-model-path', type=str, default="Qwen/Qwen2-VL-7B-Instruct",
help='The huggingface repo id for the Qwen2-VL model to be downloaded'
', or the path to the huggingface checkpoint folder')
parser.add_argument('--prompt', type=str, default="Describe this image.",
help='Prompt to infer')
parser.add_argument('--image-url-or-path', type=str,
default='http://farm6.staticflickr.com/5268/5602445367_3504763978_z.jpg' ,
help='The URL or path to the image to infer')
parser.add_argument('--n-predict', type=int, default=32,
help='Max tokens to predict')
args = parser.parse_args()
model_path = args.repo_id_or_model_path
model = Qwen2VLForConditionalGeneration.from_pretrained(model_path,
trust_remote_code=True,
torch_dtype='auto',
low_cpu_mem_usage=True,
use_cache=True,)
model = optimize_model(model, low_bit='sym_int4', modules_to_not_convert=["visual"])
# Use .float() for better output, and use .half() for better speed
model = model.half().to("xpu")
# The following code for generation is adapted from https://huggingface.co/Qwen/Qwen2-VL-7B-Instruct#quickstart
# The default range for the number of visual tokens per image in the model is 4-16384. You can set min_pixels and max_pixels according to your needs, such as a token count range of 256-1280, to balance speed and memory usage.
min_pixels = 256*28*28
max_pixels = 1280*28*28
processor = AutoProcessor.from_pretrained(model_path, min_pixels=min_pixels, max_pixels=max_pixels)
prompt = args.prompt
image_path = args.image_url_or_path
messages = [
{
"role": "user",
"content": [
{
"type": "image",
"image": image_path,
},
{"type": "text", "text": prompt},
],
}
]
text = processor.apply_chat_template(
messages, tokenize=False, add_generation_prompt=True
)
image_inputs, video_inputs = process_vision_info(messages)
inputs = processor(
text=[text],
images=image_inputs,
videos=video_inputs,
padding=True,
return_tensors="pt",
)
inputs = inputs.to('xpu')
with torch.inference_mode():
# warmup
generated_ids = model.generate(
**inputs,
max_new_tokens=args.n_predict
)
st = time.time()
generated_ids = model.generate(
**inputs,
max_new_tokens=args.n_predict
)
torch.xpu.synchronize()
end = time.time()
generated_ids = generated_ids.cpu()
generated_ids = [
output_ids[len(input_ids):] for input_ids, output_ids in zip(inputs.input_ids, generated_ids)
]
response = processor.batch_decode(generated_ids, skip_special_tokens=True)[0]
print(f'Inference time: {end-st} s')
print('-'*20, 'Input Image', '-'*20)
print(image_path)
print('-'*20, 'Prompt', '-'*20)
print(prompt)
print('-'*20, 'Output', '-'*20)
print(response)